N2 -arylsulfonyl-l-argininamides and the pharmaceutically acceptable salts thereof
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation-in-part of the following applications: 
     Serial Number 707,536 of July 22, 1976 now U.S. Pat. No. 4,036,955; 
     Serial Number 723,474 of Sept. 14, 1976; 
     Serial Number 728,051 of Sept. 30, 1976 now pending; 
     Serial Number 671,436 of Mar. 29, 1976 now U.S. Pat. No. 4,066,758; 
     Serial Number 671,568 of Mar. 29, 1976 now U.S. Pat. No. 4,049,645. 
     Application Ser. No. 671,436 and Ser. No. 671,568 are divisional applications of Ser. No. 622,390 of Oct. 14, 1975 now abandoned. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to the discovery of certain new and useful N 2  -arylsulfonyl-L-argininamides and the pharmaceutically acceptable salts thereof, which are of especial value in view of their outstanding antithrombotic properties and low toxicities. 
     2. Description of the Prior Art 
     In the past, there have been many attempts to obtain new and improved agents for the treatment of thrombosis. The N 2  -(p-tolysulfonyl)-L-arginine esters have been found to be one type of agent which can be used and these have been found to be effective in dissolving blood clots. (U.S. Pat. No. 3,622,615, issued Nov. 23, 1971). One family of compounds which have been found to be particularly useful as highly specific inhibitors of thrombin for the control of thrombosis is the N 2  -dansyl-L-arginine ester or amide. (Our pending U.S. application Ser. No. 496,939, filed Aug. 13, 1974 now U.S. Pat. No. 3,978,045). However, there is a continuing need for a highly specific inhibitor of thrombin for the control of thrombosis, which exhibits lower toxicity. 
     SUMMARY OF THE INVENTION 
     It has now been discovered that N 2  -arylsulfonyl-L-argininamides exhibit antithrombotic activity and even lower toxicity levels at the same relative potencies, as compared with the N 2  -dansyl-L-arginine ester or amide. 
     An N 2  -arlysulfonyl-L-argininamide having the formula (I): ##STR1## or a pharmaceutically acceptable salt thereof, wherein R is ##STR2## wherein R 1  is furfuryl, 3-furylmethyl, tetrahydrofurfuryl or tetrahydro-3-furylmethyl; R 2  is hydrogen, C 1  - C 10  alkyl, carboxy, C 2  - C 10  alkoxycarbonyl, phenyl optionally substituted with one or more C 1  - C 5  alkyl, C 1  - C 5  alkoxy or mixtures thereof, C 7  - C 12  aralkyl or ring substituted benzyl wherein said substituent is C 1  - C 5  alkyl or C 1  - C 5  alkoxy; R 3  is hydrogen, C 1  - C 10  alkyl, C 6  - C 10  aryl, C 7  - C 12  aralkyl or 5-indanyl; and n is 0, 1 or 2, ##STR3## where in R 4  is hydrogen, C 1  - C 10  alkyl, C 6  - C 10  aryl, C 7  - C 12  aralkyl or 5-indanyl; Z is oxy, thio or sulfinyl; and m is 0 or 1, or ##STR4## wherein R 5  is hydrogen, C 1  - C 10  alkyl, C 6  - C 10  aryl, C 7  - C 12  aralkyl or 5-indanyl; p is 0, 1 or 2; q is 0, 1 or 2: and p + q is 1 or 2: 
     and Ar is naphthyl substituted with at least one subsituent selected from the group consisting of halo, hydroxy, nitro, cyano, C 1  - C 10  alkyl, C 1  - C 10  alkoxy and C 2  - C 20  dialkyamino, and at least one subsituent selected from the group consisting of sulfoamino, carbamoyl, C 3  - C 10  N,N-dialkylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  aralkyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl and phenyl optionally substituted with at least one hydroxy C 1  - C 5  alkoxy or mixtures thereof, naphthyl substituted with at least one substituent selected from the group consisting of sulfoamino, carbamoyl, C 3  - C 10  N,N-dialkylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  aralkyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl and phenyl optionally subsituted with at least one hydroxy, C 1  - C 5  alkoxy or mixtures thereof; 
     5,6,7,8-tetrahydronaphthyl substituted with at least one substituent selected from the group consisting of halo, nitro, cyano, hydroxy, C 1  - C 10  alkyl, C 1  - C 10  alkoxy, sulfoamino carbamoyl, C 3  - C 10  N,N-diakylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  arakyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl, oxo, and phenyl optionally substituted with at least one hydroxy; C 1  - C 5  alkoxy or mixtures thereof; 
     naphthoquinonyl, anthyrl, phenanthryl, pentalenyl, heptalenyl, azulenyl, biphenylenyl, αs - indacenyl, S-indacenyl, acenaphthylenyl, phenylcarbonylphenyl, phenoxyphenyl, benzofurayl, isobenzofuranyl, benzo  b! thienyl, isobenzothienyl oxanthrenyl, thianthrenyl, dibenzofuranyl, dibenzothienyl, phenoxathiinyl, indolyl, 1H-indazolyl, quinolyl, isoquinolyl, phthalazinyl, 1,8-naphthyridinyl, quinoxalinyl, quinazolinyl. cinnolinyl, carbazolyl, acridinyl, phenazinyl, phenothiazinyl, phenoxazinyl or benzimidazolyl group any of which is unsubstituted or substituted with one or more groups selected from the group consisting of halo, nitro, cyano, hydroxy, C 1  - C 10  alkyl, C 1  - C 10  alkoxy, C 2  - C 20  dialkylamino, sulfoamino carbamoyl, C 3  - C 10  N,N-dialkylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  aralkyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl and phenyl optionally substituted with at least one hydroxy C 1  - C 5  alkoxy or mixtures thereof. 
     An N 2  -arlysulfonyl-L-argininamide having the formula (I): ##STR5## or a pharmaceutically acceptable salt thereof, wherein R is ##STR6## wherein R 1  is furfuryl, 3-furylmethyl, tetrahydrofurfuryl or tetrahydro-3-furylmethyl; R 2  is hydrogen, C 1  - C 10  alkyl, carboxy, C 2  - C 10  alkoxycarbonyl, phenyl optionally substituted with one or more C 1  - C 5  alkyl, C 1  - C 5  alkoxy or mixtures thereof, C 7  - C 12  aralkyl or ring substituted benzyl wherein said substituent is C 1  - C 5  alkyl or C 1  - C 5  alkoxy; R 3  is hydrogen, C 1  - C 10  alkyl, C 6  - C 10  aryl, C 7  - C 12  aralkyl or 5-indanyl; and n is 0, 1 or 2, ##STR7## where in R 4  is hydrogen, C 1  - C 10  alkyl, C 6  - C 10  aryl, C 7  - C 12  aralkyl or 5-indanyl; Z is oxy, thio or sulfinyl; and m is 0 or 1, or ##STR8## wherein R 5  is hydrogen, C 1  - C 10  alkyl, C 6  - C 10  aryl, C 7  - C 12  aralkyl or 5-indanyl; p is 0, 1 or 2; q is 0, 1 or 2: and p + q is 1 or 2: 
     and Ar is naphthyl subsituted with at least one subsituent selected from the group consisting of halo, hydroxy, nitro, cyano, C 1  - C 10  alkyl, C 1  - C 10  alkoxy and C 2  - C 20  dialkyamino, and at least one subsituent selected from the group consisting of sulfoamino, carbamoyl, C 3  - C 10  N,N-dialkylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  aralkyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl and phenyl optionally substituted with at least one hydroxy C 1  - C 5  alkoxy or mixtures thereof, naphthyl substituted with at least one substituent selected from the group consisting of sulfoamino, carbamoyl, C 3  - C 10  N,N-dialkylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  aralkyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl and phenyl optionally subsituted with at least one hydroxy, C 1  - C 5  alkoxy or mixtures thereof; 
     5,6,7,8-tetrahydronaphthyl substituted with at least one substituent selected from the group consisting of halo, nitro, cyano, hydroxy, C 1  - C 10  alkyl, C 1  - C 10  alkoxy, sulfoamino carbamoyl, C 3  - C 10  N,N-diakylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  arakyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl, oxo, and phenyl optionally substituted with at least one hydroxy; C 1  - C 5  alkoxy or mixtures thereof; 
     a phenyl, naphthyl, which is unsubstituted or substituted with one or more groups selected from the group consisting of halo, nitro, cyano, hydroxy, C 1  - C 10  alkyl, C 1  - C 10  alkoxy, C 2  - C 20  dialkylamino, sulfoamino, carbamoyl, C 3  - C 10  N,N-dialkylcarbamoyl, amino, C 1  - C 10  alkylamino, mercapto, C 1  - C 10  alkylthio, C 7  - C 12  aralkyl, carboxyl, C 2  - C 10  alkoxycarbonyl, C 2  - C 10  carboxyalkyl, C 1  - C 10  acylamino, C 2  - C 10  alkylcarbonyl, C 1  - C 10  hydroxyalkyl, C 1  - C 10  haloalkyl and phenyl optionally substituted with at least on hydroxy, C 1  - C 5  alkoxy or mixtures thereof. 
     Also encompassed within this invention are pharmaceutically acceptable salts thereof. 
     This invention also relates to a method for inhibiting activity and suppressing activation of thrombin in vivo in mammals which comprises administering to a mammal a pharmaceutically (antithrombotically) effective amount of an N 2  -arylnaphthalenesulfonyl-L-argininamide or the pharmaceutically acceptable salts thereof. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     This invention relates to a group of N 2  -arylsulfonyl-L-argininamides of the formula (I): ##STR9## wherein R is selected from the group consisting of (1) ##STR10## wherein R 1  is selected from the group consisting of C 2  - C 10  alkyl, such as ethyl, propyl, butyl, isobutyl, pentyl, hexyl, octyl, decyl or the like, alkenyl of 3-10 (preferably 3-6) carbon atoms, such as allyl, 2-butenyl, 3-butenyl, 2-pentenyl or the like, alkynyl of 3-10 (preferably 3-6) carbon atoms, such as 2-propynyl, 2-butynyl, 3-butynyl or the like, alkoxyalkyl of 2-10 (preferably 2-6) carbon atoms, such as methoxymethyl, ethoxymethyl, propoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-propoxyethyl, 2-methoxypropyl, 3-methoxypropyl, 3-ethoxypropyl, 3-propoxypropyl, 4-methoxybutyl, 4-ethoxybutyl, 4-butoxybutyl, 5-butoxypentyl or the like, alkylthioalkyl of 2-10 (preferably 2-6) carbon atoms, such as methylthiomethyl, ethylthiomethyl, propylthiomethyl, 2-methylthioethyl, 2-ethylthioethyl, 2-propylthioethyl, 3-methylthiopropyl, 2-methylthiopropyl, 3-ethylthiopropyl, 3-propylthiopropyl, 4-methylthiobutyl, 4-ethylthiobutyl, 4-butylthiobutyl, 5-butylthiopentyl or the like, alkylsulfinylalkyl of 2-10 (preferably 2-6) carbon atoms, such as methylsulfinylmethyl, ethylsulfinylmethyl, propylsulfinylmethyl, 2-methylsulfinylethyl, 2-ethylsulfinylethyl, 2-propylsulfinylethyl, 3-methylsulfinylpropyl, 3-ethylsulfinylpropyl or the like, hydroxyalkyl of 1-10 (preferably 1-6) carbon atoms, such as hydroxymethyl, 2-hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 4-hydroxybutyl, 3-hydroxybutyl, 5-hydroxypentyl or the like, carboxyalkyl of 2-10 (preferably 2-7) carbon atoms, such as carboxymethyl, 2-carboxyethyl, 2-carboxypropyl, 3-carboxypropyl, 1-carboxybutyl, 2-carboxybutyl, 4-carboxybutyl or the like, alkoxycarbonylalkyl of 3-10 (preferably 3-8) carbon atoms, such as methoxycarbonylmethyl, 2-ethoxycarbonylethyl, 2-ethoxycarbonylpropyl, 3-methoxycarbonylpropyl, 1-methoxycarbonylbutyl, 2-ethoxycarbonylbutyl, 4-methoxycarbonylbutyl or the like, alkylcarbonylalkyl of 3 to 10 carbon atoms such as methylcarbonylethyl or the like, haloalkyl of 1-10 (preferably 1-5) carbon atoms such as chloromethyl, 2-chloroethyl, 2-bromoethyl, 2-chloropropyl, 3-chloropropyl, 2-chlorobutyl, 4-chlorobutyl or the like, aralkyl of 7-15 (preferably 7-10) carbon atoms, such as benzyl, phenethyl, 3-phenylpropyl, 4-phenylbutyl, 6-phenylhexyl, 1-phenylethyl, 2-phenylpropyl or the like, -carboxyaralkyl of 8-15 (preferably 8-12) carbon atoms, such as -carboxybenzyl, -carboxyphenethyl or the like, C 3  - C 10  cycloalkyl, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl or cyclodecyl, C 4  - C 10  cycloalkylalkyl, such as cyclopropylmethyl, cyclopentylmethyl, cyclohexylmethyl, 2-cyclohexylethyl, cyclooctylmethyl or the like, furfuryl, tetrahydrofurfuryl, optionally substituted with one or more C 1  - C 5  alkyl, such as methyl, ethyl, propyl, butyl, or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, 3-furylmethyl, tetrahydro-3-furylmethyl, optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, tetrahydro-2(3 or 4)-pyranylmethyl optionally substituted with one or more C 1  -  C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like 1, 4-dioxa-2-cyclohexylmethyl optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, 2-thenyl, 3-thenyl, tetrahydro-2-thenyl, optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups such as methoxy, ethoxy, propoxy butoxy or the like and tetrahydro-3-thenyl; R 2  is selected from the group consisting of hydrogen, C 1  - C 10  alkyl, such as methyl, ethyl, propyl, butyl, tert-butyl, hexyl, octyl, decyl or the like, C 6  - C 10  aryl, such as phenyl, m-tolyl, naphthyl or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, or 5-indanyl; and n is an integer of 1, 2 or 3, (2) ##STR11## wherein R 3  is selected from the group consisting of hydrogen, C 1  - C 10  alkyl, such as methyl, ethyl, propyl, butyl, isobutyl, pentyl, hexyl, octyl, decyl or the like, alkenyl of 3-10 (preferably 3-6) carbon atoms, such as allyl, 2-butenyl, 3-butenyl, 2-pentenyl or the like, alkynyl of 3-10 (preferably 3-6) carbon atoms, such as 2-propynyl, 2-butynyl, 3-butynyl or the like, alkoxyalkyl of 2-10 (preferably 2-6) carbon atoms, such as methoxymethyl, ethoxymethyl, propoxymethyl, 2-methoxyethyl, 2-ethoxyethyl, 2-propoxyethyl, 2-methoxypropyl, 3-methoxypropyl, 3-ethoxypropyl, 3-propoxypropyl, 4-methoxybutyl, 4-ethoxybutyl, 4-butoxybutyl, 5-butoxypentyl or the like, alkylthioalkyl of 2-10 (preferably 2-6) carbon atoms, such as methylthiomethyl, ethylthiomethyl, propylthiomethyl, 2-methylthioethyl, 2-ethylthioethyl, 2-propylthioethyl, 3-methylthiopropyl, 2-methylthiopropyl, 3-ethylthiopropyl, 3-propylthiopropyl, 4-methylthiobutyl, 4-ethylthiobutyl, 4-butylthiobutyl, 5-butylthiopentyl or the like, alkylsulfinylalkyl of 2-10 (preferably 2-6) carbon atoms, such as methylsulfinylmethyl, ethylsulfinylmethyl, propylsulfinylmethyl, 2-methylsulfinylethyl, 2-ethylsulfinylethyl, 2-propylsulfinylethyl, 3-methylsulfinylpropyl, 3-ethylsulfinylpropyl or the like, hydroxyalkyl of 1-10 (preferably 1-6) carbon atoms, such as hydroxymethyl, 2-hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, 4-hydroxybutyl, 3-hydroxybutyl, 5-hydroxypentyl or the like, carboxyalkyl of 2-10 (preferably 2-7) carboxymethyl, 2-carboxyethyl, 2-carboxypropyl, 3-carboxypropyl, 1-carboxybutyl, 2carboxybutyl, 4-carboxybutyl or the like, alkoxycarbonylalkyl of 3-10 (preferably 3-8) carbon atoms, such as methoxycarbonylmethyl, 2-methoxycarbonylethyl, 2-ethoxycarbonylpropyl, 3-methoxycarbonylpropyl, 1-methoxycarbonylbutyl, 2-ethoxycarbonylbutyl, 4-methoxycarbonylbutyl or the like, alkylcarbonylalkyl of 3 to 10 carbon atoms such as methylcarbonylethyl or the like, haloalkyl or 1-10 (preferably 1-5) carbon atoms such as chloromethyl, 2-chloroethyl, 2-bromoethyl, 2-chloropropyl, 3-chloropropyl, 2-chlorobutyl, 4-chlorobutyl or the like, aralkyl of 7-15 (preferably 7-10) carbon atoms, such as benzyl, phenethyl, 3-phenylpropyl, 4-phenylbutyl, 6-phenylhexyl, 1-phenylethyl, 2-phenylpropyl or the like, α-carboxyaralkyl of 8-15 (preferably 8-12) carbon atoms, such as α-carboxybenzyl, α-carboxyphenethyl or the like, C 3  - C 10  cycloalkyl, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl or cyclodecyl, C 4  - C 10   cycloalkylalkyl, such as cyclopropylmethyl, cyclopentylmethyl, cyclohexylmethyl, 2-cyclohexylethyl, cyclooctylmethyl or the like, furfuryl, tetrahydrofurfuryl optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like 3-furylmethyl, tetrahydro-3-furylmethyl optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, tetrahydro-2 (3 or 5) -pyranylmethyl optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, 1,4-dioxa-2-cyclohexylmethyl optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, 2-thenyl, 3-thenyl, tetrahydro-2-thenyl optionally substituted with one or more C 1  - C 5  alkyl such as methyl, ethyl, propyl, butyl or the like, and/or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, and tetrahydro-3-thenyl; R 4  is selected from the group consisting of alkyl of 1-10 (preferably 1-5) carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, pentyl or the like, carboxy, alkoxycarbonyl of 2-10 (preferably 2-5) carbon atoms, such as methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl or the like, phenyl optionally substituted with one or more C 1  - C 5  alkyl, such as methyl, ethyl, propyl, butyl or the like, and/or C 1   - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl phenethyl or the like, and ring substituted benzyl wherein said substituent is alkyl of 1-5 (preferably 1-3) carbon atoms, such as methyl, ethyl, propyl or isopropyl, or alkoxy of 1-5 (preferably 1-3) carbon atoms, such as methoxy, ethoxy, propoxy or isopropoxy; R 5  is selected from the group consisting of hydrogen, C 1  - C 10  alkyl, such as methyl, ethyl, propyl, butyl, tert-butyl, hexyl, octyl, decyl or the like, C 6  - C 10  aryl, such as phenyl, m-tolyl, naphthyl or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, and 5-indanyl; and m is an integer of 0, 1 or 2, ##STR12## wherein R 6  is --COOR 8  wherein R 8  is selected from the group consisting of hydrogen, C 1  - C 10  alkyl, such as methyl, ethyl, propyl, butyl, tert-butyl, hexyl, octyl, decyl or the like, C 6  - C 10  aryl, such as phenyl, m-tolyl, naphthyl or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, and 5-indanyl; each R 7  independently is hydrogen, alkyl of 1-10 (preferably 1-6) carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, hexyl, octyl, decyl or the like, phenyl, C 1  - C 5  alkoxy, such as methoxy, ethoxy, propoxy, butoxy or the like, C 2  - C 6  alkoxycarbonyl, such as methoxycarbonyl, ethoxycarbonyl or the like, or carboxy; p is an integer of 1 to 4; R 6  is substituted at the 2 or 3-position; and R 7  can be substituted at the 2, 3, 4, 5 or 6-position, ##STR13## optionally substituted with one or more C 1  - C 5  alkyl, such as methyl, ethyl, propyl, butyl or the like, or C 1  - C 5  alkoxy groups, such as methoxy, ethoxy, propoxy, butoxy or the like wherein R 9  is selected from the group consisting of hydrogen, C 1  - C 10  alkyl, such as methyl, ethyl, propyl, butyl, tert-butyl, hexyl, octyl, decyl or the like, C 6  - C 10  aryl, such as phenyl, m-tolyl, naphthyl or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, and 5-indanyl; and r is an integer of 1, 2, 3 or 4, ##STR14## wherein R 10  is selected from the group consisting of hydrogen, C 1  - C 10  alkyl, such as methyl, ethyl, propyl, butyl, tert-butyl, hexyl, octyl, decyl or the like, C 6  - C 10  aryl, such as phenyl, m-tolyl, naphthyl or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, and 5-indanyl; Z is selected from the group consisting of oxy (--O--), thio (--S--) and sulfinyl (--SO--); q is an integer of 0 or 1, and ##STR15## wherein R 11  is selected from the group consisting of hydrogen, C 1  - C 10  alkyl, such as methyl, ethyl, propyl, butyl, tert-butyl, hexyl, octyl, decyl or the like, C 6  - C 10  aryl, such as phenyl, m-tolyl, naphthyl or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, and 5-indanyl; i is an integer of 0, 1 or 2; j is an integer of 0, 1 or 2; and the sum of i + j is an integer of 1 or 2; and Ar is a phenyl, naphthyl, naphthoquinonyl, anthryl, phenanthryl, pentalenyl, heptalenyl, azulenyl, biphenylenyl, as -indacenyl, S-indacenyl, acenaphthylenyl, phenylcarbonylphenyl, phenoxyphenyl, benzofuranyl, isobenzofuranyl, benzo  b! thienyl, isobenzothienyl, oxanthrenyl, thianthrenyl, dibenzofuranyl, dibenzothienyl, phenoxathiinyl, indolyl, 1H-indazolyl, quinolyl, isoquinolyl, phthalazinyl, 1,8-naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, acridinyl, phenazinyl, phenothiazinyl, phenoxazinyl or benzimidazolyl group each of which is unsubstituted or substituted with one or more groups selected from the group consisting of halo, nitro, cyano, hydroxy, alkyl of 1-10 (preferably 1-5) carbon atoms, such as methyl, ethyl, propyl, butyl or the like, alkoxy of 1-10 (preferably 1-5) carbon atoms, such as methoxy, ethoxy, propoxy, butoxy or the like, dialkylamino of 2-20 (preferably 2-10) carbon atoms, such as dimethylamino, diethylamino, dipropylamino or the like, sulfoamino, carbamoyl, N,N-dialkylcarbamoyl of 3-10 (preferably 3-7) carbon atoms, such as N,N-dimethylcarbamoyl, N,N-diethylcarbamoyl or the like, amino, alkylamino of 1-10 (preferably 1-5) carbon atoms, such as methylamino, ethylamino, propylamino, butylamino or the like, mercapto, alkylthio of 1-10 (preferably 1-5) carbon atoms, such as methylthio, ethylthio, propylthio, butylthio or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, carboxyl, alkoxycarbonyl of 2-10 (preferably 2-6) carbon atoms, such as methoxycarbonyl, ethoxycarbonyl or the like, carboxyalkyl of 2-10 (preferably 2-6) carbon atoms, such as carboxymethyl, 2-carboxyethyl, 2-carboxypropyl or the like, acylamino such as alkylcarbonylamino of 1-10 (preferably 1-5) carbon atoms, such as acetylamino, propionylamino or the like, alkylcarbonyl of 2-10 (preferably 2-6) carbon atoms, such as acetyl, propionyl or the like, hydroxyalkyl of 1-10 (preferably 1-5) carbon atoms, such as hydroxymethyl, 2-hydroxyethyl, 2-hydroxypropyl or the like, haloalkyl of 1-10 (preferably 1-5) carbon atoms, such as chloromethyl, trifluoromethyl, bromomethyl, 2-chloroethyl or the like, and phenyl optionally substituted with at least one hydroxy and/or C 1  - C 5  alkoxy, such as methoxy, ethoxy, propoxy, butoxy or the like; 
     or a 5,6,7,8-tetrahydronaphthyl, C 7  - C 12  aralkyl, 9,10-dihydroanthryl, 5,6,7,8-tetrahydroanthryl, 9,10-dihydrophenanthryl, 1,2,3,4,5,6,7,8-octahydrophenanthryl, indenyl, indanyl, fluorenyl, acenaphthenyl, phenylthiophenyl, 1,2-ethylenedioxyphenyl, chromanyl, isochromanyl, 2,3-dihydrobenzofuranyl, 1,3-dihydroisobenzofuranyl, 2,3-ethylenedioxynaphthyl, xanthenyl, thioxanthenyl, 1,2-trimethylenedioxyphenyl, 2H-chromenyl, 3,4-dehydro-1-isochromanyl, 4H-chromenyl, indolinyl, isoindolinyl, 1,2,3,4-tetrahydroquinolyl, or 1,2,3,4-tetrahydroisoquinolyl groups each of which is unsubstituted or substituted with one or more groups selected from the group consisting of halo, nitro, cyano, hydroxy, alkyl of 1-10 (preferably 1-5) carbon atoms, such as methyl, ethyl, propyl, butyl or the like, alkoxy of 1-10 (preferably 1-5) carbon atoms, such as methoxy, ethoxy, propoxy, butoxy or the like, dialkylamino of 2-20 (preferably 2-10) carbon atoms, such as dimethylamino, diethylamino, dipropylamino or the like, sulfoamino, carbamoyl, N,N-dialkylcarbamoyl of 3-10 (preferably 3-7) carbon atoms, such as N,N-dimethylcarbamoyl, N,N-diethylcarbamoyl or the like, amino, alkylamino of 1-10 (preferably 1-5) carbon atoms, such as methylamino or the like, mercapto, alkylthio of 1-10 (preferably 1-5) carbon atoms, such as methylthio, ethylthio, propylthio, butylthio or the like, aralkyl of 7-12 (preferably 7-10) carbon atoms, such as benzyl, phenethyl or the like, carboxyl, alkoxycarbonyl of 2-10 (preferably 2-6) carbon atoms, such as methoxycarbonyl, ethoxycarbonyl or the like, carboxyalkyl of 2-10 (preferably 2-6) carbon atoms, such as carboxymethyl, 2-carboxyethyl, 2-carboxypropyl or the like, acylamino such as alkylcarbonylamino of 1-10 (preferably 1-5) carbon atoms, such as acetylamino, propionylamino or the like, alkylcarbonyl of 2-10 (preferably 2-6) carbon atoms, such as acetyl, propionyl, or the like, hydroxyalkyl or 1-10 (preferably 1-5) carbon atoms, such as hydroxymethyl, 2-hydroxyethyl, 2-hydroxypropyl or the like, haloalkyl of 1-10 (preferably 1-5) carbon atoms, such as chloromethyl, trifluoromethyl, bromomethyl, 2-chloroethyl or the like, oxo and phenyl optionally substituted with at least one hydroxy and/or C 1  - C 5  alkoxy, such as methoxy, ethoxy, propoxy, butoxy or the like. 
     Illustrative of suitable N 2  -arylsulfonyl-L-argininamides are those shown in the table below. In this table, the prior art reference cited in the second column discloses a method of preparation for the compound listed in the second column. The Example No listed in the last column refers to an Example of this application which discloses the details of a method by which the product compound of the fifth column of the table may be prepared. 
     
         TABLE I                                                                    
       ArSO.sub.2 CL or ArSO.sub.3 Hor salt thereof  Starting material     
  ##STR16##                                                                
   Preparation NO. (Literature reference) Amino acid ester Ar R Procedure  
         1                                                                 
  ##STR17##                                                                
  ##STR18##                                                                
  ##STR19##                                                                
  ##STR20##                                                                
 1  Ger. 1,123,315                                                         
  2                                                                        
 ##STR21##                                                                 
  ##STR22##                                                                
  ##STR23##                                                                
  ##STR24##                                                                
 1  Ger. 1,123,315                                                         
  3                                                                        
 ##STR25##                                                                 
  ##STR26##                                                                
  ##STR27##                                                                
  ##STR28##                                                                
 2  Ber. 54,102(1921)                                                      
  4                                                                        
 ##STR29##                                                                 
  ##STR30##                                                                
  ##STR31##                                                                
  ##STR32##                                                                
  3 CA 23,1877                                                             
  5                                                                        
 ##STR33##                                                                 
  ##STR34##                                                                
  ##STR35##                                                                
  ##STR36##                                                                
  2 CA 25,15420                                                            
  6                                                                        
 ##STR37##                                                                 
  ##STR38##                                                                
  ##STR39##                                                                
  ##STR40##                                                                
  2  CA 22,413                                                             
  7                                                                        
 ##STR41##                                                                 
  ##STR42##                                                                
  ##STR43##                                                                
  ##STR44##                                                                
  2  J.Gem Chem b. 444 (1936)                                              
  8                                                                        
 ##STR45##                                                                 
  ##STR46##                                                                
  ##STR47##                                                                
  ##STR48##                                                                
  1  Compt. rend 218,973 (1944)                                            
  9                                                                        
 ##STR49##                                                                 
  ##STR50##                                                                
  ##STR51##                                                                
  ##STR52##                                                                
  2  CA 33 4227                                                            
  10                                                                       
 ##STR53##                                                                 
  ##STR54##                                                                
  ##STR55##                                                                
  ##STR56##                                                                
  2  Can. J. Chem. 41,100 (1963)                                           
  11                                                                       
 ##STR57##                                                                 
  ##STR58##                                                                
  ##STR59##                                                                
  ##STR60##                                                                
  1  Compt. rend 218,973(1944)                                             
  12                                                                       
 ##STR61##                                                                 
  ##STR62##                                                                
  ##STR63##                                                                
  ##STR64##                                                                
  2  CA 49, 5414                                                           
  13                                                                       
 ##STR65##                                                                 
  ##STR66##                                                                
  ##STR67##                                                                
  ##STR68##                                                                
  1  NaturWisserschaften 49,57 (1962)                                      
  14                                                                       
 ##STR69##                                                                 
  ##STR70##                                                                
  ##STR71##                                                                
  ##STR72##                                                                
  1  Z. Chem. 3,426 (1963)                                                 
  15                                                                       
 ##STR73##                                                                 
  ##STR74##                                                                
  ##STR75##                                                                
  ##STR76##                                                                
  1  Z. Chem. 3,426(1963)                                                  
  16                                                                       
 ##STR77##                                                                 
  ##STR78##                                                                
  ##STR79##                                                                
  ##STR80##                                                                
  1  Ger. 1,219,477                                                        
  17                                                                       
 ##STR81##                                                                 
  ##STR82##                                                                
  ##STR83##                                                                
  ##STR84##                                                                
  1  Kogyo, Kaga Ku. Zashi 62,703(1969)                                    
  18                                                                       
 ##STR85##                                                                 
  ##STR86##                                                                
  ##STR87##                                                                
  ##STR88##                                                                
  1  J. Chem. Soc. 1972, 2500                                              
  19                                                                       
 ##STR89##                                                                 
  ##STR90##                                                                
  ##STR91##                                                                
  ##STR92##                                                                
  1  Ber 31,1663                                                           
  20                                                                       
 ##STR93##                                                                 
  ##STR94##                                                                
  ##STR95##                                                                
  ##STR96##                                                                
  1  Ber 26,996                                                            
  21                                                                       
 ##STR97##                                                                 
  ##STR98##                                                                
  ##STR99##                                                                
  ##STR100##                                                               
  1  Beistein 11 I, 135                                                    
  22                                                                       
 ##STR101##                                                                
  ##STR102##                                                               
  ##STR103##                                                               
  ##STR104##                                                               
  3  mp 88-9°                                                       
  23                                                                       
 ##STR105##                                                                
  ##STR106##                                                               
  ##STR107##                                                               
  ##STR108##                                                               
  3  mp 20-2                                                               
  24                                                                       
 ##STR109##                                                                
  ##STR110##                                                               
  ##STR111##                                                               
  ##STR112##                                                               
  3                                                                        
   mp 55° 25                                                        
 ##STR113##                                                                
  ##STR114##                                                               
  ##STR115##                                                               
  ##STR116##                                                               
  1  Ger 56780 (Ch 68,1=ohu) 26                                            
  ##STR117##                                                               
  ##STR118##                                                               
  ##STR119##                                                               
  ##STR120##                                                               
  3  Helv.chim.Acta 46,7=7(1963)                                           
  27                                                                       
 ##STR121##                                                                
  ##STR122##                                                               
  ##STR123##                                                               
  ##STR124##                                                               
  2  Zhur OBshchei Khim 18, 1459(1945)                                     
  28                                                                       
 ##STR125##                                                                
  ##STR126##                                                               
  ##STR127##                                                               
  ##STR128##                                                               
  2  Per, 84, 1254 (1956)                                                  
  29                                                                       
 ##STR129##                                                                
  ##STR130##                                                               
  ##STR131##                                                               
  ##STR132##                                                               
  1  CA 47, 10519                                                          
  30                                                                       
 ##STR133##                                                                
  ##STR134##                                                               
  ##STR135##                                                               
  ##STR136##                                                               
  1  CA, 32, 2938                                                          
  31                                                                       
 ##STR137##                                                                
  ##STR138##                                                               
  ##STR139##                                                               
  ##STR140##                                                               
  1  Monatsh. 92,667(1961)                                                 
  32                                                                       
 ##STR141##                                                                
  ##STR142##                                                               
  ##STR143##                                                               
  ##STR144##                                                               
  2  Compt. rend 198,2260(1934)                                            
  33                                                                       
 ##STR145##                                                                
  ##STR146##                                                               
  ##STR147##                                                               
  ##STR148##                                                               
  2  Compt. rend 198,2260(1934)                                            
  34                                                                       
 ##STR149##                                                                
  ##STR150##                                                               
  ##STR151##                                                               
  ##STR152##                                                               
  1  J. Am. Chem. Soc 58,717(1936)                                         
  35                                                                       
 ##STR153##                                                                
  ##STR154##                                                               
  ##STR155##                                                               
  ##STR156##                                                               
  3  Monatsh. 85,235(1954)                                                 
  36                                                                       
 ##STR157##                                                                
  ##STR158##                                                               
  ##STR159##                                                               
  ##STR160##                                                               
  2  J. Chem. Eng. Data 12,610 (1967)                                      
  37                                                                       
 ##STR161##                                                                
  ##STR162##                                                               
  ##STR163##                                                               
  ##STR164##                                                               
  2  J. Ger. Chem 10,1077(1940)                                            
  38                                                                       
 ##STR165##                                                                
  ##STR166##                                                               
  ##STR167##                                                               
  ##STR168##                                                               
  2  J. Pharm. Soc. Japan 73,1378(1958)                                    
  39                                                                       
 ##STR169##                                                                
  ##STR170##                                                               
  ##STR171##                                                               
  ##STR172##                                                               
  2  J. Pharm. Soc. Japan76,103(1958)                                      
  40                                                                       
 ##STR173##                                                                
  ##STR174##                                                               
  ##STR175##                                                               
  ##STR176##                                                               
  1  J. Chem. Soc. 1958,3830                                               
  41                                                                       
 ##STR177##                                                                
  ##STR178##                                                               
  ##STR179##                                                               
  ##STR180##                                                               
  2  J. Chem. Soc 1953,1499                                                
  42                                                                       
 ##STR181##                                                                
  ##STR182##                                                               
  ##STR183##                                                               
  ##STR184##                                                               
  2                                                                        
  43                                                                       
 ##STR185##                                                                
  ##STR186##                                                               
  ##STR187##                                                               
  ##STR188##                                                               
  1  J. Chem Soc 1968,687                                                  
  44                                                                       
 ##STR189##                                                                
  ##STR190##                                                               
  ##STR191##                                                               
  ##STR192##                                                               
  1  J. Chem Soc 1968,687                                                  
  45                                                                       
 ##STR193##                                                                
  ##STR194##                                                               
  ##STR195##                                                               
  ##STR196##                                                               
  1  J. Chem Soc 1968,687                                                  
  46                                                                       
 ##STR197##                                                                
  ##STR198##                                                               
  ##STR199##                                                               
  ##STR200##                                                               
  1  J. Chem Soc 1968,687                                                  
  46                                                                       
 ##STR201##                                                                
  ##STR202##                                                               
  ##STR203##                                                               
  ##STR204##                                                               
  1  J. Chem Soc 1968,687                                                  
  47                                                                       
 ##STR205##                                                                
  ##STR206##                                                               
  ##STR207##                                                               
  ##STR208##                                                               
  3  J. Am. Chem Soc 72,4890(1950)                                         
  48                                                                       
 ##STR209##                                                                
  ##STR210##                                                               
  ##STR211##                                                               
  ##STR212##                                                               
  2  U.S. Pat. No. 2,476,541 49                                            
  ##STR213##                                                               
  ##STR214##                                                               
  ##STR215##                                                               
  ##STR216##                                                               
  2  Zhur Obscher Khin 23,842                                              
  50                                                                       
 ##STR217##                                                                
  ##STR218##                                                               
  ##STR219##                                                               
  ##STR220##                                                               
  2  Zhur Obscher Khin 23,842                                              
  51                                                                       
 ##STR221##                                                                
  ##STR222##                                                               
  ##STR223##                                                               
  ##STR224##                                                               
  2  J. Am Chem. Soc 75,2095 (1953)                                        
  52                                                                       
 ##STR225##                                                                
  ##STR226##                                                               
  ##STR227##                                                               
  ##STR228##                                                               
  2  Brit 590,645 (1947)                                                   
  53                                                                       
 ##STR229##                                                                
  ##STR230##                                                               
  ##STR231##                                                               
  ##STR232##                                                               
  2  J. Org. Chem. 23,435 (1958)                                           
  54                                                                       
 ##STR233##                                                                
  ##STR234##                                                               
  ##STR235##                                                               
  ##STR236##                                                               
  2  U.S. Pat. No. 2,708,669                                               
  55                                                                       
 ##STR237##                                                                
  ##STR238##                                                               
  ##STR239##                                                               
  ##STR240##                                                               
  2  Gazz. chim ital 81,764(1959)                                          
  56                                                                       
 ##STR241##                                                                
  ##STR242##                                                               
  ##STR243##                                                               
  ##STR244##                                                               
  2  Pharm Busll (Japan) 5,297(1954)                                       
  57                                                                       
 ##STR245##                                                                
  ##STR246##                                                               
  ##STR247##                                                               
  ##STR248##                                                               
  3  (Aldrich)                                                             
  58                                                                       
 ##STR249##                                                                
  ##STR250##                                                               
  ##STR251##                                                               
  ##STR252##                                                               
  3  Pharmazie 20,549                                                      
  59                                                                       
 ##STR253##                                                                
  ##STR254##                                                               
  ##STR255##                                                               
  ##STR256##                                                               
  2  J. Am Chem Soc 71                                                     
  60                                                                       
 ##STR257##                                                                
  ##STR258##                                                               
  ##STR259##                                                               
  ##STR260##                                                               
  1  U.S. Pat. No. 2,656,354                                               
  61                                                                       
 ##STR261##                                                                
  ##STR262##                                                               
  ##STR263##                                                               
  ##STR264##                                                               
  1  Compt Rend Acad Eulanae Sci 18,243                                    
  62                                                                       
 ##STR265##                                                                
  ##STR266##                                                               
  ##STR267##                                                               
  ##STR268##                                                               
  2  J. pr  2! 118,75                                                      
  63                                                                       
 ##STR269##                                                                
  ##STR270##                                                               
  ##STR271##                                                               
  ##STR272##                                                               
  2  Photo physik Photochem 58,3 (1963)                                    
  64                                                                       
 ##STR273##                                                                
  ##STR274##                                                               
  ##STR275##                                                               
  ##STR276##                                                               
  2  J. Gem. Chem 16,1873                                                  
  65                                                                       
 ##STR277##                                                                
  ##STR278##                                                               
  ##STR279##                                                               
  ##STR280##                                                               
  2  Ber., 86,951 (1953)                                                   
  66                                                                       
 ##STR281##                                                                
  ##STR282##                                                               
  ##STR283##                                                               
  ##STR284##                                                               
  2  Ber 86,951 (1963)                                                     
  67                                                                       
 ##STR285##                                                                
  ##STR286##                                                               
  ##STR287##                                                               
  ##STR288##                                                               
  2  Ber 86,951 (1953)                                                     
  68                                                                       
 ##STR289##                                                                
  ##STR290##                                                               
  ##STR291##                                                               
  ##STR292##                                                               
  2  Zhur. Obschei Khim 30,1218 (1960)                                     
  69                                                                       
 ##STR293##                                                                
  ##STR294##                                                               
  ##STR295##                                                               
  ##STR296##                                                               
  2  Zhur Obschei Khim 30,1218 (1960)                                      
  70                                                                       
 ##STR297##                                                                
  ##STR298##                                                               
  ##STR299##                                                               
  ##STR300##                                                               
  2  Bull. Soc Chem France 1950,466                                        
  71                                                                       
 ##STR301##                                                                
  ##STR302##                                                               
  ##STR303##                                                               
  ##STR304##                                                               
  2  Bull. Soc. Chem France 1950,466                                       
  72                                                                       
 ##STR305##                                                                
  ##STR306##                                                               
  ##STR307##                                                               
  ##STR308##                                                               
  1  Zhur. Obschei Khim 22,866(1952)                                       
  73                                                                       
 ##STR309##                                                                
  ##STR310##                                                               
  ##STR311##                                                               
  ##STR312##                                                               
  2  Zhur. Obschei Khim 22, 866 (1952) 74                                  
  ##STR313##                                                               
  ##STR314##                                                               
  ##STR315##                                                               
  ##STR316##                                                               
  2  Zhur. Obschei Khim 22, 866 (1952)                                     
  75                                                                       
 ##STR317##                                                                
  ##STR318##                                                               
  ##STR319##                                                               
  ##STR320##                                                               
  2  Zhur. Obschei Khim 22, 866 (1952)                                     
  76                                                                       
 ##STR321##                                                                
  ##STR322##                                                               
  ##STR323##                                                               
  ##STR324##                                                               
  2  Rocamiki chem 15, 565 (1935)                                          
  77                                                                       
 ##STR325##                                                                
  ##STR326##                                                               
  ##STR327##                                                               
  ##STR328##                                                               
  2  CA 62, 14675G                                                         
  78                                                                       
 ##STR329##                                                                
  ##STR330##                                                               
  ##STR331##                                                               
  ##STR332##                                                               
  2  CA 26, 4723                                                           
  79                                                                       
 ##STR333##                                                                
  ##STR334##                                                               
  ##STR335##                                                               
  ##STR336##                                                               
  2  Japanese Patent Published 39-26975                                    
  80                                                                       
 ##STR337##                                                                
  ##STR338##                                                               
  ##STR339##                                                               
  ##STR340##                                                               
  2  Japanese Patent Published 39-26975                                    
  81                                                                       
 ##STR341##                                                                
  ##STR342##                                                               
  ##STR343##                                                               
  ##STR344##                                                               
  2  J. Hm Chem Soc. 57, 1533 (1935)                                       
  82                                                                       
 ##STR345##                                                                
  ##STR346##                                                               
  ##STR347##                                                               
  ##STR348##                                                               
  2  J. Hm Chem Soc. 59, 1533 (1935)                                       
  83                                                                       
 ##STR349##                                                                
  ##STR350##                                                               
  ##STR351##                                                               
  ##STR352##                                                               
  2  CA 45 9063i                                                           
  84                                                                       
 ##STR353##                                                                
  ##STR354##                                                               
  ##STR355##                                                               
  ##STR356##                                                               
  2  Org Synth II, 539                                                     
  85                                                                       
 ##STR357##                                                                
  ##STR358##                                                               
  ##STR359##                                                               
  ##STR360##                                                               
  3  (No. 8)                                                               
  86 &#34;                                                                     
 ##STR361##                                                                
  ##STR362##                                                               
  ##STR363##                                                               
  2                                                                        
  87 &#34;                                                                     
 ##STR364##                                                                
  ##STR365##                                                               
  ##STR366##                                                               
  6                                                                        
  88 &#34;                                                                     
 ##STR367##                                                                
  ##STR368##                                                               
  ##STR369##                                                               
  6                                                                        
  89 &#34;                                                                     
 ##STR370##                                                                
  ##STR371##                                                               
  ##STR372##                                                               
  3                                                                        
 
    
     Also illustrative of suitable N 2  -arylsulfonyl-L-argininamides are those shown in the table below. In this table, the Example No listed in the sixth column refers to the Example of this application by which the compound in the first column was prepared. 
     
                                                                                    
  ##STR373##                                                               
  Concentrationrequired toprolong thecoagulationtime by a Preparation      
 Elementary analysisUpper: Calculated (%) Sample   Addition factor of two p
 rocess m.p. Lower: Found (%) I.R. (KBr) No. Ar R moiety (μ M) (Ex.     
 No.) (°                                                            
  C) C H N (cm.sup.-1)                                                  1  
  ##STR374##                                                               
  ##STR375##                                                               
  -- 8 1 powder 52.7652.68 6.356.21 13.3813.30 3,3603,1601,620  2 &#34;        
  ##STR376##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 134-6 52.2552.07 6.826.73 11.2910.89 3,3603,1801,7401,375    
 3 &#34;                                                                       
  ##STR377##                                                               
   -- 0.3 1 powder 53.6253.48 6.566.43 13.0312.98 3,3603,1401,622  4 &#34;     
  ##STR378##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 164-6 52.9852.69 7.006.98 11.0410.86 3,3903,1651,7351,370    
 5 &#34;                                                                       
  ##STR379##                                                               
  -- 2 1 powder 53.6253.43 6.566.51 13.0313.12 3,3603,160 1,620  6 &#34;       
  ##STR380##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 52.9852.59 7.006.79 11.0410.89 3,3903,1701,7371,370  7 &#34;   
  ##STR381##                                                               
  -- 5 1 &#34; 54.4354.38 6.766.79 12.7012.56 3,3503,1801,630                  
  8 &#34;                                                                      
 ##STR382##                                                                
  1/2H.sub.2                                                               
  SO.sub.3  1 195-6 53.6953.40 7.157.12 10.8010.56 3,3803,1801,7381,375    
 9 &#34;                                                                       
  ##STR383##                                                               
  -- 1.5 1 powder 55.2154.98 6.957.02 12.3812.47 3,3603,2001,622  10 &#34;     
  ##STR384##                                                               
  1/2H.sub.2                                                              1
  SO.sub.3  1 198-200 54.3754.30 7.307.27 10.5710.36 3,3603,160,7301,368   
 11 &#34;                                                                      
  ##STR385##                                                               
  --  1powder 56.6456.41 7.307.17 11.8011.51  3,3603,1801,620  12 &#34;        
  ##STR386##                                                               
  1/2H.sub.2                                                              1
  SO.sub.3  1 172-174 55.6455.31 7.597.63 10.1410.18 3,3803,180,7401,375   
 13 &#34;                                                                      
  ##STR387##                                                               
  -- 0.5 3 powder 51.2050.93 6.176.02 3,3803,1801,630 14 &#34;                 
  ##STR388##                                                               
  ##STR389##                                                               
  1.5 3 185 47.6747.64 4.924.81 11.1211.12 3,3753,2001,740                 
  15 &#34;                                                                     
 ##STR390##                                                                
  -- 2.5 3 powder 52.0752.21 6.376.04 12.6712.51 3,3803,2001,620  16 &#34;     
  ##STR391##                                                               
  --  3 &#34; 53.6953.53 6.766.69 12.0412.38 3,3803,2001,740                   
  17 &#34;                                                                     
 ##STR392##                                                                
  -- 2.5 1 &#34; 52.9052.71 6.576.43 12.3412.46 3,3503,1601,640  18 &#34;          
  ##STR393##                                                               
  1/2H.sub.2                                                              1
  SO.sub.3  1 &#34; 52.4052.16  6.967.13 10.5410.28 3,3403,1601,736,380  19 &#34;  
  ##STR394##                                                               
  -- 5 1 &#34; 52.0751.91 6.376.19 12.6512.38 3,3603,1601,620                  
  20 &#34;                                                                     
 ##STR395##                                                                
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 51.6851.43 6.826.66 10.7610.58 3,3803,1601,7401,370  21 &#34;  
  ##STR396##                                                               
  -- 4 1 &#34; 52.9052.59 6.576.41 12.3412.16 3,3603,1601,640                  
  22 &#34;                                                                     
 ##STR397##                                                                
  1/2H.sub.2                                                              1
  SO.sub.3  1 &#34;  52.9852.73 7.007.00 11.0410.82 3,3773,1601,740,368  23    
  ##STR398##                                                               
  ##STR399##                                                               
  -- 4 4 &#34; 51.2051.31 6.176.01 12.9812.67 3,3603,1801,610                  
  24 &#34;                                                                     
 ##STR400##                                                                
  ##STR401##                                                               
   4 225-7 47.6747.62 4.924.84 11.1211.18 3,3753,2001,742                  
  25 &#34;                                                                     
 ##STR402##                                                                
  -- 2 1 powder 53.6253.58 6.566.48 13.0312.94 3,3803,2001,630  26 &#34;       
  ##STR403##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 224 52.9852.73 7.007.00 11.0410.82 3,3603,1601,7401,370  27  
  ##STR404##                                                               
 2                                                                         
  H.sub.5                                                                  
 ##STR405##                                                                
  --15 1 powder 52.8952.77 6.576.80 12.3412.59 3,3803,2001,625  28 &#34;       
  ##STR406##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 52.3952.10 6.976.84 10.5410.21 3,3703,1501,7401,370  29 &#34;  
  ##STR407##                                                               
  --  1 powder 55.2055.00 6.956.81 12.3812.21 3,3603,150 1,620  30  &#34;      
  ##STR408##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 54.3654.25 7.307.11 10.5710.81 3,3703,2001,7351,370  31    
  ##STR409##                                                               
  ##STR410##                                                               
  -- 0.5 1 &#34; 54.4354.21 6.556.50 13.8013.79 3,3603,1801,632  32 &#34;          
  ##STR411##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 53.6353.607.006.79 11.5811.40 3,3803,2001,7401,370  33 &#34;   
  ##STR412##                                                               
  --  1 &#34; 51.8651.64 6.136.09 13.7513.84 3,3703,2001,625                   
  34 &#34;                                                                     
 ##STR413##                                                                
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 55.2155.11 6.956.76 12.3812.27 3,3803,1801,7381,368  35    
  ##STR414##                                                               
  ##STR415##                                                               
  -- 0.5 3 &#34; 51.8651.72 6.136.11 13.7513.63 3,3703,1601,620                
  36 &#34;                                                                     
 ##STR416##                                                                
  ##STR417##                                                               
   3 158-160 47.9447.83 4.854.80 11.5111.43 3,3753,2001,740  37 &#34;          
  ##STR418##                                                               
  --  1 powder 53.5353.40 6.336.21 14.1914.04 3,375 3,1501,620  38 &#34;       
  ##STR419##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 52.8652.77 6.836.66 11.8611.75 3,3803,2001,7401,370  39 &#34;  
  ##STR420##                                                               
  -- 0.5 1 &#34; 54.4354.22 6.556.3113.8013.59 3,3803,1501,620                 
  40 &#34;                                                                     
 ##STR421##                                                                
  1/2H.sub.2 SO.sub.3  1 131-137(dec.) 53.6353.40 7.007.10 11.5811.40      
 3,3803,1601,7501,640                                                      
  41 &#34;                                                                     
 ##STR422##                                                                
  --  1 powder 55.2655.21 6.766.65 13.4313.29 3,3501,630                   
  42 &#34;                                                                     
 ##STR423##                                                                
  1/2H.sub.2 SO.sub.3  1 169-175(dec.) 54.3554.27 7.177.00 11.3211.08      
 3,3503,1801,7401,640                                                      
  43                                                                       
 ##STR424##                                                                
  ##STR425##                                                               
  -- 2.5 1 powder 51.8651.77 6.136.00 13.7513.72 3,3653,2001,620  44 &#34;     
  ##STR426##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 51.4751.20 6.656.35 11.5411.24 3,3703,2001,7401,370  45 &#34;  
  ##STR427##                                                               
  --  1 &#34; 54.4354.28 6.556.31 13.8013.70 3,3753,2001,622                   
  46 &#34;                                                                     
 ##STR428##                                                                
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 53.6353.53 7.007.08 11.5811.40 3,3803,2001,7401,370  47 &#34;  
  ##STR429##                                                               
  --  1 &#34; 52.7652.47 6.356.01 13.3813.09 3,3753,1801,620                   
  48 &#34;                                                                     
 ##STR430##                                                                
  1/2H.sub.2                                                               
  SO.sub.3  1 &#34; 52.2452.00 6.826.55 11.2811.00 3,3803,2001,7401,368  49    
  ##STR431##                                                               
  ##STR432##                                                               
  0.5 H.sub.2 SO.sub.3  1 189-191(dec.) 55.6855.36 6.336.35 10.4710.45     
 3,3603,1601,730                                                           
  50 &#34;                                                                     
 ##STR433##                                                                
  -- 2.5 1 powder 56.7356.43 5.825.80 12.2512.19 3,3703,2001,615  51 &#34;     
  ##STR434##                                                               
  ##STR435##                                                               
   1 132-135(dec.) 52.7852.61 5.175.15 10.2610.23 3,3603,1801,720  52 &#34;    
  ##STR436##                                                               
  -- 10 1 powder 57.4257.19 6.026.10 11.9611.73 3,3603,1601,620  53 &#34;      
  ##STR437##                                                               
  ##STR438##                                                               
   1 157-158(dec.) 52.7852.63 5.175.14 10.2610.09 3,3803,2201,750  54 &#34;    
  ##STR439##                                                               
  -- 3.0 1 powder 57.4257.09 6.026.06 11.9611.74 3,3603,2001,590  55 &#34;     
  ##STR440##                                                               
  ##STR441##                                                               
   1 155-157(dec.) 53.2553.13 5.305.21 10.1110.03 3,3803,1801,720 56 &#34;     
  ##STR442##                                                               
  -- 50 1 powder 58.0857.93 6.226.04 11.6811.54 3,200-3,380(broad)1,620    
 57                                                                        
  ##STR443##                                                               
  ##STR444##                                                               
  ##STR445##                                                               
   1 153-156(dec.) 52.2852.14 5.034.98 10.4110.36 3,4003,0801,740  58 &#34;    
  ##STR446##                                                               
  -- 6.5 1 powder 56.7356.58 5.825.73 12.2512.14 3,000-3,400(broad)1,600   
 59                                                                        
  ##STR447##                                                               
  ##STR448##                                                               
  ##STR449##                                                               
   1 144-148(dec.) 53.6753.69 5.265.24 10.4310.39 3,3603,2001,720  60 &#34;    
  ##STR450##                                                               
  -- 50 1 powder 59.0459.14 6.196.15 12.3012.28 3,040-3,360(broad)1,610    
 61 &#34;                                                                      
  ##STR451##                                                               
  ##STR452##                                                               
   1 155-158(dec.) 53.1954.97 5.125.06 10.5910.48 3,4003,2001,730  62 &#34;    
  ##STR453##                                                               
  -- 15 1 powder 58.3758.19 6.005.98 12.6112.49 3,300(broad)1,640  63      
  ##STR454##                                                               
  ##STR455##                                                               
  ##STR456##                                                               
   1 147-150(dec.) 59.1959.23 5.125.07 10.5910.54 3,4003,2301,750  64 &#34;    
  ##STR457##                                                               
  -- 20 1 powder 58.3758.21 6.005.93 12.6112.46 3,200(broad)1,620  65      
  ##STR458##                                                               
  ##STR459##                                                               
  --  1 &#34; 60.2960.21 6.586.56 11.7211.64 3,3653,1701,730                   
  66 &#34;                                                                     
 ##STR460##                                                                
  -- 2.0 1 &#34; 57.6657.48 5.775.74 12.9312.84 3,3603,1601,610                
  67                                                                       
 ##STR461##                                                                
  ##STR462##                                                               
  -- 1 1 &#34; 50.2550.45 5.956.01 13.3213.15 3,3501,6201,3801,150  68         
  ##STR463##                                                               
  ##STR464##                                                               
  1/2 H.sub.2                                                             1
  SO.sub.3  1 &#34; 50.4350.57 6.656.58 10.5010.71 3,3501,7451,650,360  69 &#34;   
  ##STR465##                                                               
  -- 5 1 171-2 50.6050.51 6.196.30 12.2912.40 3,4001,6351,2601,160  70 &#34;   
  ##STR466##                                                               
  --  2 powder 55.4055.65 6.626.81 12.43 12.19 3,2201,7501,640  71         
  ##STR467##                                                               
  ##STR468##                                                               
  -- 5 2 powder 53.8253.66 6.215.96 13.0812.81 3,3501,6251,155  72         
  ##STR469##                                                               
  ##STR470##                                                               
  ##STR471##                                                               
   2 192-193 49.5849.24 4.874.70 11.5611.85 3,2101,7471,638  73 &#34;          
  ##STR472##                                                               
  -- 3 2 powder 54.6456.88 6.186.31 13.8513.83 3,200(broad)1,6201,150  74  
  ##STR473##                                                               
  ##STR474##                                                               
  -- 0.4 2 &#34; 54.6354.50 6.426.09 12.7412.81 l3,3701,6251,158               
  75                                                                       
 ##STR475##                                                                
  ##STR476##                                                               
  ##STR477##                                                               
   2 188-190 50.1750.01 5.034.78 11.3811.56 3,2001,7401,635                
  76                                                                       
 ##STR478##                                                                
  ##STR479##                                                               
  -- 0.15 2 powder 55.4755.49 6.406.33 13.9813.51 3,250(broad)1,625  77    
  ##STR480##                                                               
  ##STR481##                                                               
  --  2 &#34; 57.0256.81 6.816.91 12.7912.78 3,2001,7401,635                   
  78 &#34;                                                                     
 ##STR482##                                                                
  --  2 powder 55.4755.31 6.406.68 13.4813.21 3,3501,6201,150  79          
  ##STR483##                                                               
  ##STR484##                                                               
  ##STR485##                                                               
   2 222-3 49.8249.57 5.094.88 11.9911.68 3,2001,7451,630                  
  80 &#34;                                                                     
 ##STR486##                                                                
  -- 0.35 2 powder 54.6354.55 6.426.42 12.7412.58 3,350(broad)1,6201,150   
 81                                                                        
  ##STR487##                                                               
  ##STR488##                                                               
  ##STR489##                                                               
   2 154-6 50.9251.28 5.375.21 10.6610.59 3,4001,7351,635                  
  82 &#34;                                                                     
 ##STR490##                                                                
  --  2 powder 56.1356.11 6.806.85 12.1211.95 3,300(broad)1,6101,255  83   
  ##STR491##                                                               
  ##STR492##                                                               
  ##STR493##                                                               
   2 179-180 50.3850.34 5.235.18 10.8211.05 3,3801,7351,635  84 &#34;          
  ##STR494##                                                               
  --  2 powder 55.4055.71 6.626.48 12.4312.53 3,3601,6201,150  85          
  ##STR495##                                                               
  ##STR496##                                                               
  ##STR497##                                                               
   2 125(soften) 50.7350.58 5.185.11 11.1910.93 3,3801,7351,638  86 &#34;      
  ##STR498##                                                               
  --  2 powder 56.26 56.41 6.616.48 13.1213.27 3,3601,6201,158  87         
  ##STR499##                                                               
  ##STR500##                                                               
  --  2 &#34; 57.5057.56 7.157.08 11.5611.71 3,3302,9601,7401,640  88 &#34;        
  ##STR501##                                                               
  -- 0.5 2 &#34; 56.1356.11 6.806.81 12.1211.96 3,4001,620                     
  89 &#34;                                                                     
 ##STR502##                                                                
  --  2 &#34; 57.5057.15 7.157.21 11.5611.62 3,3602,9601,735                   
  90 &#34;                                                                     
 ##STR503##                                                                
  --  2 &#34; 56.1356.21 6.806.81 12.1212.033,4001,6201,150                    
  91 &#34;                                                                     
 ##STR504##                                                                
  --  2 &#34; 54.6354.54 6.426.40 12.7412.68 3,3501,6201,150                   
  92 &#34;                                                                     
 ##STR505##                                                                
  --  2 powder 56.1356.08 6.806.91 12.1212.08 3,2501,7401,640  93          
  ##STR506##                                                               
  ##STR507##                                                               
  --  2 &#34; 57.0256.86 6.816.83 12.7912.68 3,2301,7401,650                   
  94 &#34;                                                                     
 ##STR508##                                                                
  --  2 &#34; 54.6354.59 6.426.38 12.7412.68 3,2501,6201,160                   
  95                                                                       
 ##STR509##                                                                
  ##STR510##                                                               
  ##STR511##                                                               
   2 161-163 48.9749.05 4.714.73 11.7611.58 3,3401,7381,635  96 &#34;          
  ##STR512##                                                               
  --  2 powder53.8253.68 6.216.08 13.0812.85 3,3701,6351,2551,155  97      
  ##STR513##                                                               
  ##STR514##                                                               
  --  2 &#34; 54.6454.58 6.186.09 13.8513.93 3,3701,6401,260 1,155  98         
  ##STR515##                                                               
  ##STR516##                                                               
  ##STR517##                                                               
   1 165-168(dec.) 51.9451.50 5.645.41 10.3410.10 3,3903,2201,740  99 &#34;    
  ##STR518##                                                               
  --  1 powder 56.1356.00 6.816.73 12.1212.01 3,350(broad)1,640  100 &#34;     
  ##STR519##                                                               
  ##STR520##                                                               
   1 178-181(dec.) 51.9452.24 5.645.60 10.3410.28 3,4003,200 1,735  101 &#34;  
  ##STR521##                                                               
  --  1 powder 56.1356.28 6.816.59 12.1212.31 3,350(broad)1,640  102       
  ##STR522##                                                               
  ##STR523##                                                               
  ##STR524##                                                               
   1 162-165(dec.) 51.4351.28 5.505.21 10.5010.21 3,3703,2001,730  103 &#34;   
  ##STR525##                                                               
  --  1 powder 55.4055.28 6.626.32 12.4312.03 3,300(broad)1,610(broad)     
 104                                                                       
  ##STR526##                                                               
  ##STR527##                                                               
  ##STR528##                                                               
   1 158-160(dec.) 52.7552.56 5.565.43 11.0410.97 3,4053,2201,740  105 &#34;   
  ##STR529##                                                               
  --  1 powder 56.2656.01 6.616.49 13.1313.21 3,320(broad)1,640  106       
  ##STR530##                                                               
  ##STR531##                                                               
  ##STR532##                                                               
   1 160-163(dec.) 52.3352.03 5.605.30 10.6810.28 3,4003,2101,730  107 &#34;   
  ##STR533##                                                               
  --  1 powder 57.02 57.39 6.816.21 12.7912.38 3,350(broad)1,620  108      
  ##STR534##                                                               
  ##STR535##                                                               
  ##STR536##                                                               
   1 152-155(dec.) 52.8352.53 5.735.72 10.5210.29 3,3903,2051,730  109 &#34;   
  ##STR537##                                                               
  --  1 powder 57.7357.51 7.007.23 12.4712.28 3,3701,630                   
  110                                                                      
 ##STR538##                                                                
  ##STR539##                                                               
  ##STR540##                                                               
   1 170-172(dec.) 51.4351.09 5.505.45 10.5010.28 3,3803,2201,740  111 &#34;   
  ##STR541##                                                               
  -- 5 1 powder 55.4055.30 6.626.28 12.4312.11 3,400-3,200(broad)1,600     
 112 &#34;                                                                     
  ##STR542##                                                               
  ##STR543##                                                               
   1 155-158(dec.) 51.9452.29 5.645.63 10.3410.00 3,3803,2001,730  113 &#34;   
  ##STR544##                                                               
  --  1 powder 56.1356.40 6.816.61 12.1212.00 3,200-3,400(broad)1,600      
 114 &#34;                                                                     
  ##STR545##                                                               
  --  1 &#34; 54.6354.406.426.30 12.7412.50 3,200-3,400(broad)1,600  115 &#34;     
  ##STR546##                                                               
  ##STR547##                                                               
   1 165-170(dec.) 50.8150.68 5.585.43 10.6410.31 3,3803,2001,740  116 &#34;   
  ##STR548##                                                               
  --  1 powder 54.4354.70 6.766.71 12.7012.35 3,4001,590                   
  117 &#34;                                                                    
 ##STR549##                                                                
  ##STR550##                                                               
   1 164-166 51.3351.60 5.715.38 10.4810.253,3603,2001,735  118 &#34;          
  ##STR551##                                                               
  -- 2.0 1 powder 55.2155.00 6.956.30 12.3812.40 3,400-3,200(broad)1,570   
 119 &#34;                                                                     
  ##STR552##                                                               
  ##STR553##                                                               
   1 168-172 52.7752.54 5.174.98 10.2610.21 3,3803,1801,740                
  120                                                                      
 ##STR554##                                                                
  ##STR555##                                                               
  -- 2.5 1 powder 57.4257.35 6.025.84 11.9612.00 3,350-3,160(broad) 1,600  
  121 &#34;                                                                    
 ##STR556##                                                                
  ##STR557##                                                               
   1 130-135 53.2553.08 5.305.29 10.1110.29 3,4003,2001,730  122 &#34;         
  ##STR558##                                                               
  -- 1.5 1 powder 58.0857.84 6.226.13 11.6811.46 3,3603,1601,600  123 &#34;    
  ##STR559##                                                               
  ##STR560##                                                               
   1 158-163(dec.) 51.9551.80 5.645.38 10.3410.30 3,3603,2001,740  124 &#34;   
  ##STR561##                                                               
  --  1 powder 56.1455.98 6.816.79 12.1312.35 3,380-3,200(broad)1,625      
 125                                                                       
  ##STR562##                                                               
  ##STR563##                                                               
  ##STR564##                                                               
   1 160-163(dec.) 52.4452.39 5.765.58 10.1910.00 3,4003,2001,740  126 &#34;   
  ##STR565##                                                               
  -- 4.5 1 powder 56.8456.72 6.996.80 11.8411.76 3,380-3,250(broad)1,595   
 127                                                                       
  ##STR566##                                                               
  ##STR567##                                                               
  &#34;  1 160-165(dec.) 50.6250.39 5.405.28 11.1711.15 3,4003,2101,740  128   
 &#34;                                                                         
  ##STR568##                                                               
  --  1 powder 54.4354.27 6.556.28 13.8013.59 3,2801,590                   
  129                                                                      
 ##STR569##                                                                
  ##STR570##                                                               
  -- 5 1 &#34; 52.0751.89 6.376.39 12.6512.51 3,3603,2001,600                  
  130                                                                      
 ##STR571##                                                                
  ##STR572##                                                               
  -- 20 5 210-213 54.8654.72 7.337.21 14.5414.27 3,3501,630                
  131                                                                      
 ##STR573##                                                                
  ##STR574##                                                               
  --  5 120-130 55.7355.82 7.527.50 14.1314.01 3,3501,630                  
  132                                                                      
 ##STR575##                                                                
  ##STR576##                                                               
  -- 10 5 108-110 52.1552.21 6.886.71 14.4814.52 3,300(broad)1,630  133    
  ##STR577##                                                               
  ##STR578##                                                               
  -- 30 5 powder 58.2358.01 6.456.35 13.5813.46 3,300(broad)1,635  134     
  ##STR579##                                                               
  ##STR580##                                                               
  --  5 powder 58.9658.91 6.666.79 13.2213.15 3,200(broad)1,635  135       
  ##STR581##                                                               
  ##STR582##                                                               
  --  5 &#34; 55.7355.81 7.527.40 14.1314.10 3,300(broad)1,630  136 &#34;          
  ##STR583##                                                               
  --  5 170-173 57.5657.41 7.547.39 13.4313.50 3,3351,630                  
  137                                                                      
 ##STR584##                                                                
  ##STR585##                                                               
  --  5 powder 56.7856.85 7.357.29 13.8013.71 3,200(broad)1,630  138       
  ##STR586##                                                               
  ##STR587##                                                               
  --  5 &#34; 58.9658.79 6.666.51 13.2213.19 3,300(broad)1,630                 
  139                                                                      
 ##STR588##                                                                
  ##STR589##                                                               
  --  5 142-145 49.0748.90 5.495.38 13.6313.42 3,1501,620                  
  140                                                                      
 ##STR590##                                                                
  ##STR591##                                                               
  --  5 powder 47.4747.29 5.435.31 12.5812.39 3,1501,630                   
  141                                                                      
 ##STR592##                                                                
  ##STR593##                                                               
  --  5 powder 49.0749.12 5.495.28 13.6313.59 3,1501,630                   
  142                                                                      
 ##STR594##                                                                
  ##STR595##                                                               
  --  5 123-130 57.0156.88 6.986.71 13.8513.65 3,3001,635                  
  143                                                                      
 ##STR596##                                                                
  ##STR597##                                                               
  -- 0.3 5 powder 56.1956.00 6.776.50 14.2514.00 3,3003,1501,630  144 &#34;    
  ##STR598##                                                               
  -- 0.2 5 &#34; 53.5353.24 6.336.19 14.1913.99 3,300(broad)1,630  145 &#34;       
  ##STR599##                                                               
  --  5 &#34; 60.0959.79 6.166.02 12.9312.61 3,300(broad)1,630  146 &#34;          
  ##STR600##                                                               
  -- 14 5 &#34; 58.7358.66 7.016.90 13.1712.91 3,3801,635                      
  147                                                                      
 ##STR601##                                                                
  ##STR602##                                                               
  --  5 147-150 52.5952.31 6.106.01 14.6114.33 3,3801,640                  
  148 &#34;                                                                    
 ##STR603##                                                                
  --  5 powder 57.2356.98 6.616.33 13.9113.81 3,300(broad)1,630  149       
  ##STR604##                                                               
  ##STR605##                                                               
  --  5 &#34; 58.6958.79 5.715.55 13.6913.39 3,300(broad)3,1501,630  150 &#34;     
  ##STR606##                                                               
  --  5 &#34; 56.1955.95 6.776.58 14.2513.97 3,190(broad)1,620                 
  151                                                                      
 ##STR607##                                                                
  ##STR608##                                                               
  -- 20 5 130-135 53.5353.28 6.336.19 14.1913.97 3,3501,640                
  152                                                                      
 ##STR609##                                                                
  &#34; -- 10 5 152-157 54.4254.28 6.556.32 13.8013.59 3,3501,635  153         
  ##STR610##                                                               
  ##STR611##                                                               
  -- 4 5 powder 55.3655.10 6.976.76 16.1416.07 3,3801,630                  
  154 &#34;                                                                    
 ##STR612##                                                                
  --  5 &#34; 52.8652.71 6.566.29 16.0816.07                                   
  155                                                                      
 ##STR613##                                                                
  &#34; --  5 &#34; 50.9050.81 5.905.70 14.1313.89 3,180(broad)1,630   156         
  ##STR614##                                                               
  ##STR615##                                                               
  --  5  &#34; 59.4159.22 5.955.73 13.3313.28 3,170(broad)1,620  157 &#34;         
  ##STR616##                                                               
  HCl  6 &#34; 53.1752.89 6.696.52 12.9212.74                                  
  158 &#34;                                                                    
 ##STR617##                                                                
  HCl  6 &#34; 57.6657.31 6.346.14 11.5911.16                                  
  159 &#34;                                                                    
 ##STR618##                                                                
  --  5 &#34; 55.3355.26 6.546.62 14.6714.58 3,200(broad)1,630                 
  160                                                                      
 ##STR619##                                                                
  ##STR620##                                                               
  -- 0.25 1 &#34; 55.4755.75 6.406.19 13.4813.26 3,350(broad)1,6301,380  161   
 &#34;                                                                         
  ##STR621##                                                               
  -- 0.2 5 &#34; 55.0555.28 7.127.00 13.3813.12 3,200(broad)1,6351,380  162    
  ##STR622##                                                               
  ##STR623##                                                               
  -- 0.2 1 &#34; 54.2253.98 5.505.55 13.1813.24 3,320(broad)1,6301,380  163 &#34;  
  ##STR624##                                                               
  --  1 &#34; 57.2257.23 6.356.36 11.9212.08 3,400(broad)1,7401,620   164 &#34;    
  ##STR625##                                                               
  -- 0.15 1 &#34; 53.8253.78 6.216.19 13.0812.86 3,360(broad)1,6251,380  165   
 &#34;                                                                         
  ##STR626##                                                               
  --  1 &#34; 56.8356.95 6.986.83 11.8411.98 3,400(broad)1,7351,630  166       
  ##STR627##                                                               
  ##STR628##                                                               
  CH.sub.3 CO.sub.2                                                        
  H  5 &#34; 53.2853.13 6.626.82 13.8113.71 3,320(broad)1,6301,140  167        
  ##STR629##                                                               
  ##STR630##                                                               
   --  5 &#34; 51.1550.86 5.605.66 12.9712.87 3,320(broad)1,6301,380  168      
  ##STR631##                                                               
  ##STR632##                                                               
  --  5 &#34; 54.6453.36 6.186.00 13.8513.58 3,350(broad)1,6401,390  169       
  ##STR633##                                                               
  &#34; --  5 &#34; 56.2755.98 6.616.78 13.1213.24 3,350(broad)1,6301,3801,140     
 170                                                                       
  ##STR634##                                                               
  &#34; --  5 &#34; 54.2154.36 6.926.93 13.7413.76 3,300(broad)1,6251,3801,160     
 171                                                                       
  ##STR635##                                                               
  &#34; --  1, 2 &#34; 53.0852.86 6.246.33 12.3812.41 3,300(broad)1,6401,160  172  
 &#34;                                                                         
  ##STR636##                                                               
  --  1 &#34; 56.0255.83 6.976.88 11.2711.28 3,400(broad)1,7451,620  173       
  ##STR637##                                                               
  ##STR638##                                                               
  -- 0.2 3 &#34; 57.2356.89 6.616.50 13.9113.70 3,390(broad)1,625  174 &#34;       
  ##STR639##                                                               
  CH.sub.3                                                                 
  COOH  3 &#34; 56.8356.72 6.986.81 11.8411.56 3,400(broad)1,7351,640  175 &#34;   
  ##STR640##                                                               
  -- 0.1 2 &#34; 58.7358.52 7.016.77 13.1713.00 3,380(broad)1,620  176 &#34;       
  ##STR641##                                                               
  1/2H.sub.2                                                               
  SO.sub.3  2 powder 55.9855.69 7.057.21 11.6611.38 3,400(broad)1,7301,635 
  177                                                                      
 ##STR642##                                                                
  ##STR643##                                                               
  --  3 &#34; 58.7358.81 7.027.03 13.1713.17 3,300(broad)1,6151,380  178 &#34;     
  ##STR644##                                                               
  CH.sub.3                                                                 
  COOH  3 &#34; 58.1357.98 7.327.56 11.3011.28 3,380(broad)1,7301,630  179     
  ##STR645##                                                               
  ##STR646##                                                               
  -- 1 3 &#34; 56.4256.38 6.386.52 14.3114.53 3,350(broad)1,6201,160  180 &#34;    
  ##STR647##                                                               
  CH.sub.3                                                                 
  COOH  3 &#34; 56.1356.08 6.806.83 12.1212.123,400 (broad)1,7401,630  181     
  ##STR648##                                                               
  ##STR649##                                                               
  -- 0.5 3 &#34; 58.0057.83 6.826.77 13.5313.63 3,350(broad)1,6201,160  182 &#34;  
  ##STR650##                                                               
  CH.sub.3                                                                 
  COOH  3 &#34; 57.5057.61 7.157.11 11.5611.81 3,350(broad)1,7301,620  183     
  ##STR651##                                                               
  ##STR652##                                                               
  -- 0.35 3 &#34; 55.5855.62 6.616.81 16.2116.03 3,350(broad)1,6201,140 184    
  ##STR653##                                                               
  ##STR654##                                                               
  --  3 &#34; 55.9656.12 7.157.28 14.1914.07 3,350(broad)1,6201,150  185 &#34;     
  ##STR655##                                                               
  CH.sub.3 COOH  3 &#34; 55.7455.90 7.457.5112.0412.18 3,400(broad)1,7301,625  
  186                                                                      
 ##STR656##                                                                
  ##STR657##                                                               
  --  3 &#34; 54.3854.08 6.215.91 12.6912.39 3,300(broad)1,625                 
  187                                                                      
 ##STR658##                                                                
  ##STR659##                                                               
  --  2 &#34; 52.2552.36 6.035.98 12.7012.513,4001,7351,6401,160  188 &#34;        
  ##STR660##                                                               
  --  2 &#34; 50.4650.61 5.585.63 13.3813.40 3,3801,6201,3801,155  189 &#34;       
  ##STR661##                                                               
  -- 2 3 &#34; 52.0652.31 5.765.81 13.8013.51 3,3201,6201,3901,155  190 &#34;      
  ##STR662##                                                               
  --  2 &#34; 48.9649.13 5.425.38 12.9812.75 3,3501,6201,3801,150  191         
  ##STR663##                                                               
  ##STR664##                                                               
  -- 5 2 &#34; 51.3851.45 5.815.86 13.0313.12 3,3501,6301,2551,150  192        
  ##STR665##                                                               
  ##STR666##                                                               
  --  2 &#34; 49.5049.31  5.345.40 13.7513.68 3,3503,2001,622                  
  193                                                                      
 ##STR667##                                                                
  ##STR668##                                                               
  --  2 &#34; 58.2758.45 5.906.03 11.7211.53 3,3501,7401,6401,2601,160  194 &#34;  
  ##STR669##                                                               
  -- 2 2 &#34; 57.6257.68 5.705.55 12.00 11.733,300(broad)1,6201,2501,150      
 195 &#34;                                                                     
  ##STR670##                                                               
  -- 1.5 3 &#34; 56.9357.12 5.495.43 12.3012.14 3,3601,6251,2601,150  196 &#34;    
  ##STR671##                                                               
  -- 6.5 1 &#34; 54.6354.28 6.426.31 12.7412.53 3,350(broad)1,740  197 &#34;       
  ##STR672##                                                               
  --  2 &#34; 53.8654.16 5.925.62 13.0012.70 3,100(broad)1,620  198 &#34;          
  ##STR673##                                                               
  1/2H.sub.2 SO.sub.3  2 &#34; 54.5354.23 6.105.80 9.649.34 1,7201,630(broad)  
  199                                                                      
 ##STR674##                                                                
  ##STR675##                                                               
 --  2 &#34; 48.5548.31 4.934.64 11.8011.53 3,300(broad)1,620                  
  200                                                                      
 ##STR676##                                                                
  ##STR677##                                                               
  HCl 2 6 &#34; 54.1053.81 7.327.13 10.189.93 3,180(broad)1,7401,630  201 &#34;    
  ##STR678##                                                               
  --  2 &#34; 57.2256.98 6.246.18 11.1211.31 3,3003,1501,7401,650  202 &#34;       
  ##STR679##                                                               
  HCl 20 6 &#34; 54.0953.83 6.05 5.97 10.5110.36 3,2503,1001,7401,640  203 &#34;   
  ##STR680##                                                               
  HCl 30 6 &#34; 55.5355.37 6.126.01 10.1210.01 3,3503,1501,7401,650  204      
  ##STR681##                                                               
  ##STR682##                                                               
  -- 4.5 2 powder 48.9649.13 5.425.36 12.9813.01 3,3501,6201,380  205 &#34;    
  ##STR683##                                                               
  -- 2.5 2 &#34; 54.6454.63 6.426.56 12.7413.01 3,3602,9401,6201,380  206      
  ##STR684##                                                               
  ##STR685##                                                               
  -- 12 2 &#34; 59.8959.65 4.52 4.63 11.6411.81 3,3601,6201,2551,150  207 &#34;    
  ##STR686##                                                               
  -- 55 2 &#34; 50.1549.91 6.416.35 14.0413.83 3,2801,620                      
  208 &#34;                                                                    
 ##STR687##                                                                
  --  2 &#34; 53.8553.61 5.935.76 13.0012.84 3,3201,610                        
  209 &#34;                                                                    
 ##STR688##                                                                
  -- 2 2 &#34; 57.4257.37 6.025.86 11.9611.74 3,300(broad)1,600                
  210                                                                      
 ##STR689##                                                                
  ##STR690##                                                               
  --  2 &#34; 57.4157.33 6.035.94 11.96 11.73 3,3001,610                       
  211 &#34;                                                                    
 ##STR691##                                                                
  -- 2.5 2 &#34; 53.9853.74 5.385.33 11.6611.74 3,3501,630                     
  212                                                                      
 ##STR692##                                                                
  ##STR693##                                                               
  -- 6.5 2 &#34; 52.0652.40 6.386.37 12.6512.73 3,350(broad)1,620  213 &#34;       
  ##STR694##                                                               
  --  2 &#34; 52.0751.95 6.376.27 12.6512.84 3,350(broad)1,620  214 &#34;          
  ##STR695##                                                               
  -- 15 2 &#34; 52.7552.68 6.366.34 13.3813.41 3,380(broad)1,620  215 &#34;        
  ##STR696##                                                               
  --  2 &#34; 50.9750.67 6.586.61 13.7213.39 3,200(broad)1,610(broad)  216 &#34;   
  ##STR697##                                                               
  1/2H.sub.2 SO.sub.3  2 &#34; 52.0151.77 6.696.50 10.1110.00 1,7251,620  217  
  ##STR698##                                                               
  ##STR699##                                                               
  --  5 &#34; 46.8146.63 6.005.94 14.3714.23 3,4003,3001,630                   
  218                                                                      
 ##STR700##                                                                
  ##STR701##                                                               
  --  5 &#34; 51.3851.24 5.825.79 13.0312.87 3,3803,3001,630                   
  219                                                                      
 ##STR702##                                                                
  ##STR703##                                                               
  --  1 &#34; 52.1552.03 6.886.73 14.4814.68 3,3551,6301,3801,305  220         
  ##STR704##                                                               
  ##STR705##                                                               
  2H.sub.2 O 2 2 195-198 50.4250.48 6.546.16 12.2512.31 3,3201,620  221 &#34;  
  ##STR706##                                                               
  1/2H.sub.2 O 15 2 229-233 52.9452.73 6.306.15 12.8712.93 3,3501,620      
 222                                                                       
  ##STR707##                                                               
  ##STR708##                                                               
  -- 6.5 1 powder 48.7848.54 5.775.76 12.9313.15 3,3201,6201,390  223      
  ##STR709##                                                               
  ##STR710##                                                               
  --  1 &#34; 50.2750.11 5.955.87 13.3313.34 3,3901,6301,2601,160  224         
  ##STR711##                                                               
  ##STR712##                                                               
  --  5 &#34; 53.7653.66 5.955.83 14.2514.19 3,4003,2001,635                   
  225                                                                      
 ##STR713##                                                                
  ##STR714##                                                               
  --  5 &#34; 46.6246.53 6.386.21 14.3114.43 3,3503,150 1,630                  
  226                                                                      
 ##STR715##                                                                
  ##STR716##                                                               
  --  5 &#34; 49.7149.84 7.027.26 13.1813.36 3,250(broad)3,1501,630  227 &#34;     
  ##STR717##                                                               
  --  5 &#34; 46.2446.31 6.406.53 13.4813.41 3,3203,1501,630                   
  228                                                                      
 ##STR718##                                                                
  ##STR719##                                                               
  HCl  1 &#34; 47.7447.53 6.756.51 14.6514.41 3,3403,1801,640                  
  229                                                                      
 ##STR720##                                                                
  ##STR721##                                                               
    1  ,527852.79 6.005.87 13.4313.28 3,3503,1501,620                      
  230 &#34;                                                                    
 ##STR722##                                                                
    1  53.16 5.64 13.48                                                    
  231                                                                      
 ##STR723##                                                                
  ##STR724##                                                               
    5  40.7140.60 4.954.78 13.1913.03 3,3603,1501,620                      
  232                                                                      
 ##STR725##                                                                
  ##STR726##                                                               
  --  3 &#34; 55.5955.54 6.296.14 12.4712.35 3,3503,1501,625                   
  233                                                                      
 ##STR727##                                                                
  ##STR728##                                                               
  --  3 &#34; 57.4357.26 6.136.04 12.8812.71 3,3503,1301,615                   
  234                                                                      
 ##STR729##                                                                
  ##STR730##                                                               
  --  5 &#34; 46.8046.61 6.116.05 15.1615.23 3,3753,1501,630                   
  235                                                                      
 ##STR731##                                                                
  ##STR732##                                                               
  --  3 &#34; 50.8250.71 6.866.69 12.8912.57 3,3603,1201,620                   
 
    
     The pharmaceutically acceptable salts of the above compounds are of course also included within the scope of this invention. 
     For the preparation of the compounds of this invention, various methods can be employed depending upon the particular starting materials and/or intermediates involved. Successful preparation of these compounds is possible by way of several synthetic routes which are outlined below. 
     (a) Condensation of an L-argininamide with an arylsulfonyl halide 
     This process may be illustrated as follows: ##STR733## 
     In the above formulas, R and Ar are as defined herein above; X is halogen; R&#39;&#34; is a protective group for the α-amino group, such as benzyloxycarbonyl or tertbutoxycarbony; R&#39; and R&#34; are selected from the group consisting of hydrogen and protective groups for the guanidino group, such as nitro, tosyl, trityl, oxycarbonyl and the like; and at least one of the R&#39; and R&#34; is a protective group for the guanidino group. The N 2  -arylsulfonyl-L-argininamide (I) is prepared by the condensation of an L-argininamide (VI) with a substantially equimolar amount of an arylsulfonyl halide (VII), preferably a chloride. The condensation reaction is generally effected in a suitable reaction-inert solvent in the presence of an excess of a base, such as an organic base (triethylamine, pyridine) or a solution of an inorganic base (sodium hydroxide, potassium carbonate), at a temperature of 0° C to the boiling temperature of the solvent for a period of 10 minutes to 15 hours. The preferred solvents for the condensation include benzene-diethyl ether, diethyl ether-water and dioxane-water. After the reaction is complete, the formed salt is extracted with water, and the solvent is removed by such standard means as evaporation under reduced pressure to give the N 2  -arylsulfonyl-L-argininamide (I), which can be purified by trituration or recrystallization from a suitable solvent, such as diethyl ethertetrahydrofuran, diethyl ether-methanol and water-methanol, or may be chromatographed on silica gel. The L-argininamides (VI) starting materials required for the condensation reaction can be prepared by protecting the guanidino and α-amino groups of L-arginine (II) via nitration, acetylation, formylation, phthaloylation, trifluoroacetylation, p-methoxybenzyloxycarbonylation, benzoylation, benzyloxycarbonylation, tert-butoxycarbonylation or tritylation and then condensing the formed N G  -substituted-N 2  -substituted-L-arginine (III) with a corresponding amino acid derivative (IV) by such a conventional process as the acid chloride method, azide method, mixed anhydride method, activated ester method or carbodiimide method, and thereafter selectively removing the protective groups from the formed N G  -substituted-N 2  -substituted-L-argininamide (V). The amino acid derivatives (IV) which are the starting materials for the preparation of the N G  -substituted-N 2  -substituted-L-argininamides (V) are represented by the following formulas: ##STR734## 
     In the above formulas, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 9 , R 10 , R 11 , Z, n, m, r, q, i, and j are as defined herein above. The amino acid derivatives of the above formula (VIII) or (IX) can be prepared by the condensation of a haloacetate, 3-halopropionate or 4-halobutyrate with an appropriate amine having the formula R 1  NH 2  or R 3  NH 2 . (See, J. Org. Chem., 25 728-732 (1960)). The condensation reaction is generally carried out without a solvent or in a solvent, such as benzene or ether, in the presence of an organic base, such as triethylamine or pyridine, at a temperature of 0° to 80° C for a period of 10 minutes to 20 hours. After the reaction is complete, the formed amino acid derivative is separated by such conventional means as extraction with a suitable solvent or evaporation of the reaction solvent and thereafter purified by distillation under reduced pressure. Among the amino acid derivatives, amino acid tert-butyl ester derivatives are preferred, because they are easily converted to other ester derivatives by acidolysis in the presence of a corresponding alcohol employing an inorganic acid (HCl, H 2  SO 4 , etc.) or an organic acid (toluenesulfonic acid, trifluoroacetic acid, etc.). In accordance with the process employed for preparing 2-piperidinecarboxylic acid derivatives (X), the following scheme is illustrative: ##STR735## In the first reaction of the aforementioned scheme, an appropriately substituted piperidine (XIV) is contacted with an aqueous sodium hypochlorite solution at a temperature of -5° to 0° C. The resultant product (XV) is isolated by extraction with a solvent, e.g., diethyl ether, and then treated with potassium hydroxide in a lower alkanol solvent to give the 1,2-dehydropiperidine (XVI). The action of cyanogenating agents, e.g., hydrogen cyanide or sodium cyanide converts the 1,2-dehydropiperidines (XVI) to the corresponding 2-cyano analogs (XVII). Hydrolysis of the 2-cyanopiperidines (XVII) to yield the 2-piperidinecarboxylic acids (XVIII) is effected by treatment of the 2-cyanopiperidines (XVII) with an inorganic acid, such as hydrochloric acid or sulfuric acid. The arylsulfonyl halides (VII) which are the starting materials for the preparation of the N 2  -arylsulfonyl-L-argininamides (I) can be prepared by halogenating the requisite arylsulfonic acids or their salts, e.g., sodium salts, by conventional methods well known to those skilled in the art. In practice, halogenation is carried out without a solvent or in a suitable solvent e.g., halogenated hydrocarbons or DMF in the presence of a halogenating agent, e.g., phosphorous oxychloride, thionyl chloride, phosphorous trichloride, phosphorous tribromide or phosphorous pentachloride, at a temperature of -10° to 200° C for a period of 5 minutes to 5 hours. After the reaction is complete, the reaction product is poured into ice water and then extracted with a solvent such as ether, benzene, ethyl acetate, chloroform or the like. The arylsulfonyl halide can be purified by recrystallization from a suitable solvent such as hexane, benzene or the like. (b) Removal of the N G  -substituent from an N G  -substituted-N 2  -arylsulfonyl-L-argininamide This process may be illustrated as follows: ##STR736## In the above formulas, R, Ar, X, R&#39;, R&#34; and R&#39;&#34; are as defined herein above. The N 2  -arylsulfonyl-L-argininamide (I) is prepared by removing the N G  -substituent from an N G  -substituted-N 2  -arylsulfonyl-L-argininamide (XX) by means of acidolysis or hydrogenolysis. The acidolysis is generally effected by contacting the N G  -substituted-N 2  -arylsulfonyl-L-argininamide (XX) and an excess of an acid such as hydrogen fluoride, hydrogen chloride, hydrogen bromide or trifluoroacetic acid, without a solvent or in a solvent, such as an ether (tetrahydrofuran, dioxane), an alcohol (methanol, ethanol) or acetic acid at a temperature of -10° to 100° C, and preferably at room temperature for a period of 30 minutes to 24 hours. The products are isolated by evaporation of the solvent and the excess acid, or by trituration with a suitable solvent followed by filtration and drying. Because of the use of the excess acid, the products are generally the acid addition salts of the N 2  -arylsulfonyl-L-argininamides (I), which can be easily converted to a free amide by neutralization. The removal of the nitro group and the oxycarbonyl group, e.g., benzyloxycarbonyl, p-nitrobenzyloxycarbonyl, is readily accomplished by the hydrogenolysis. At the same time, the benzyl ester moiety which can be included in the R group is converted to the carboxyl group by the hydrogenolysis. The hydrogenolysis is effected in a reaction-inert solvent, e.g., methanol, ethanol, tetrahydrofuran or dioxane, in the presence of a hydrogen-activating catalyst, e.g., Raney nickel, palladium, or platinum, in a hydrogen atmosphere at a temperature of 0° C to the boiling temperature of the solvent for a period of 2 hours to 120 hours. The hydrogen pressure is not critical, and atmospheric pressure is sufficient. The N 2  -arylsulfonyl-L-argininamides (I) are isolated by filtration of the catalyst followed by evaporation of the solvent. The N 2  -arylsulfonyl-L-argininamides can be purified in the same manner as described above. The N G  -substituted-N 2  -arylsulfonyl-L-argininamides (XX) starting materials can be prepared by condensing an N G  -substituted-N 2  -substituted L-arginine (III) (generally the N G  -substituent is nitro or acyl, and the N 2  -substituent is a protective group for the amino group, such as benzyloxycarbonyl, tert-butoxycarbonyl, or the like) and a corresponding amino acid derivative (IV), selectively removing only the N 2  -substituent of an N G  -substituted-N 2  -substituted L-argininamide (V) by means of catalytic hydrogenolysis or acidolysis, and then condensing the thus obtained N G  -substituted-L-argininamide (XIX) with an arylsulfonyl halide (VII), preferably a chloride in the presence of a base in a solvent. These reaction conditions are as described above in the condensation of an L-argininamide with an arylsulfonyl halide, the the removal of the N G  -substituent from an N G  -substituted-N 2  -arylsulfonyl-L-argininamide. (c) Condensation of an N 2  -arylsulfonyl-L-arginyl halide with an amino acid derivative This process may be illustrated as follows: ##STR737## In the above formulas, R, Ar and X are a defined herein above. The N 2  -arylsulfonyl-L-argininamide (I) is prepared by the condensation of an N 2  -arylsulfonyl-L-arginyl halide (XXII), preferably a chloride with at least an equimolar amount of an amino acid derivative (IV). The condensation reaction can be carried out without an added solvent in the presence of a base. However, satisfactory results will be obtained with the use of a solvent such as basic solvents (dimethylformamide, dimethylacetamide, etc.) or halogenated solvents (chloroform, dichloromethane, etc.). The amount of the solvent to be used is not critical and may vary from about 5 to 100 times the weight of the N 2  -arylsulfonyl-L-arginyl halide (XXII). Preferred condensation reaction temperatures are in the range of from -10° C to room temperature. The reaction time is not critical, but varies with the amino acid derivative (IV) employed. In general, a period of from 5 minutes to 10 hours is operable. The obtained N 2  -arylsulfonyl-L-argininamide can be isolated and purified in the same manner as described above. The N 2  -arylsulfonyl-L-arginyl halide (XXII) starting materials required for the condensation reaction can be prepared by reacting an N 2  -arylsulfonyl-L-arginine (XXI) with at least an equimolar amount of a halogenating agent such as thionyl chloride, phosphorous oxychloride, phosphorus trichloride, phosphorous pentachloride or phosphorus tribromide. Th halogenation can be carried out with or without an added solvent. The preferred solvents are chlorinated hydrocarbons such as chloroform and dichloromethane, and ethers such as tetrahydrofuran and dioxane. The amount of the solvent to be used is not critical and may vary from about 5 to 100 times the weight of the N 2  -arylsulfonyl-L-arginine (XXI). Preferred reaction temperature are in the range of -10° C to room temperature. The reaction time is not critical, but varies with the halogenating agent and reaction temperature. In general, a period of 15 minutes to 5 hours is operable. The N 2  -arylsulfonyl-L-arginines (XXI) which are the starting materials for the preparation of the N 2  -arylsulfonyl-L-arginyl halides (XXII) can be prepared by the condensation of L-arginine (II) with a substantially equimolar amount of arylsulfonyl halides (VII), by a method similar to that described in the condensation of an L-argininamide with an arylsulfonyl halide. (d) Guanidylation of an N 2  -arylsulfonyl-L-ornithinamide or an acid addition salt thereof 
     This process may be illustrated as follows: ##STR738## In the above formulas, R and Ar are as defined herein above. The N 2  -arylsulfonyl-L-argininamide (I) is prepared by guanidylating an N 2  -arylsulfonyl-L-ornithinamide (XXIII) with an ordinary guanidylating agent such as an O-alkylisourea, S-alkylisothiourea, 1-guanyl-3,5-dimethylpyrazole or carbodiimide. The preferred guanidylating agents are the O-alkylisourea and the S-alkylisothiourea. The guanidylation of the N 2  -arylsulfonyl-L-ornithinamide (XXIII) with the O-alkylisourea or S-alkylisothiourea is generally effected in a solvent in the presence of a base at a temperture of from 0° C to the boiling temperature of the solvent for a period of from 30 minutes to 50 hours. Examples of the preferred bases are triethylamine, pyridine, sodium hydroxide and sodium methoxide. The base is used in an amount of 0.01 to 0.1 equivalent to the N 2  -arylsulfonyl-L-ornithinamide. Examples of the preferred solvents are water, water-ethanol and water-dioxane. After the reaction is complete, the N 2  -arylsulfonyl-L-argininamide (I) is isolated by evaporation of the solvent followed by removal of the excess base and the formed salt by a water wash. It is well recognized in the art that an ester derivative of the N 2  -arylsulfonyl-L-argininamide (I) wherein R 2 , R 5 , R 8 , R 9 , R 10  or R 11  is alkyl, aralkyl, aryl or 5-indanyl, can be prepared from a carboxylic acid derivative of the N 2  -arylsulfonyl-L-argininamide wherein R 2 , R 5 , R 8 , R 9 , R 10  or R 11  is hydrogen, by the conventional esterification methods well known to those skilled in the art. It is also well recognized in the art that the carboxylic acid derivative can be prepared from the ester derivative by the conventional hydrolysis or acidolysis methods. The conditions under which esterification, hydrolysis or acidolysis would be carried out will be each apparent to those skilled in the art. 
     The N 2  -arylsulfonyl-L-argininamide (I) of this invention forms acid addition salts with any of a variety of inorganic or organic acids. Some of the N 2  -arylsulfonyl-L-argininamides containing a free carboxyl group, wherein R 2 , R 5 , R 8 , R 9 , R 10  or R 11  is hydrogen, forms salts with any of a variety of inorganic or organic bases. The product of the reactions described above can be isolated in the free form or in the form of salts. In addition, the product can be obtained as pharmaceutically acceptable acid addition salts by reacting one of the free bases with an acid, such as hydrochloric, hydrobromic, hydroiodic, nitric, sulfuric, phosphoric, acetic, citric, maleic, succinic, lactic, tartaric, gluconic, benzoic, methanesulfonic, ethanesulfonic, benzenesulfonic, p-toluenesulfonic acid or the like. In a similar manner, the product can be obtained as pharmaceutically acceptable salts by reacting one of the free carboxylic acids with a base, such as sodium hydroxide, potassium hydroxide, ammonium hydroxide, triethylamine, procaine, dibenzylamine, 1-ephenamine, N,N&#39;-dibenzylethylenediamine, N-ethylpiperidine or the like. Likewise, treatment of the salts with a base or acid results in a regeneration of the free amide. As stated above, the N 2  -arylsulfonyl-L-argininamides, and the salts thereof of this invention are characterized by their highly specific inhibitory activity in mammals against thrombim as well as by their substantial lack of toxicity, and therefore these compounds are useful in the determination of thrombin in blood as diagnostic reagents, and/or for the medical control or prevention of thrombosis. The compounds of this invention are also useful as an inhibitor of platelet aggregation. The antithrombotic activity of the N 2  -arylsulfonyl-L-argininamide of this invention was compared with that of a known antithrombotic agent, N 2  -(p-tolylsulfonyl)-L-arginine methyl ester, by determining the fibrinogen coagulation time. The measurement of the fibrinogen coagulation time was conducted as follows: 
     An 0.8 ml aliquot of a fibrinogen solution, which had been prepared by dissolving 150 mg of bovine fibrinogen (Cohn fraction I) supplied by Armour Inc. in 40 ml of a borate saline buffer (pH 7.4), was mixed with 0.1 ml of a borate saline buffer, pH 7.4, (control) or a sample solution in the same buffer, and 0.1 ml of a thrombin solution (5 units/ml) supplied by Mochida Pharmaceutical Co., Ltd. was added to the solutions in an ice bath. Immediately after mixing, the reaction mixture was transferred from the ice bath to a bath maintained at 25° C. Coagulation times were taken as the period between the time of transference to the 25° C bath and the time of the first appearance of fibrin threads. In the cases where no drug samples were added, the coagulation time was 50-55 seconds. The experimental results are summarized in Table 2. The term &#34;concentration required to prolong the coagulation time by a factor of two&#34; is the concentration of an active ingredient required to prolong the normal coagulation time 50-55 seconds to 100-110 seconds. The concentration required to prolong the coagulation time by a factor of two for the known antithrombotic agent, N 2  -(p-tolylsulfonyl)-L-arginine methyl ester, was 1,100μm. The inhibitors are shown in Table 1 by indicating R and Ar in the formula (I) and the addition moiety. When a solution containing an N 2  -naphthylsulfonyl-L-argininamide of this invention was administered intravenously into animal bodies, the high antithrombotic activity in the circulating blood was maintained for from one to three hours. The halflife for decay of the anti-thrombotic compounds of this invention in circulating blood was shown to be approximately 60 minutes; the physiological conditions of the host animals (rat, rabbit, dog and chimpanzee) were well maintained. The experimental decrease of fibrinogen in animals caused by infusion of thrombin was satisfactorily controlled by simultaneous infusion of the compounds of this invention. The acute toxicity values (LD 50 ) determined by intraperitoneal administration of substances of formula (I) in mice (male, 20 g) range from about 1,000 to 10,000 milligrams per kilogram of body weight. Representative LD 50  values for the compounds of this invention are shown in the following Table. 
     
         ______________________________________                                    
Compound               LD.sub.50 (mg/kg)                                  
______________________________________                                    
N.sup.2 -(7-methyl-2-naphthylsulfonyl)-L-                                 
                       &gt;1,500                                             
arginyl-N-butylglycine                                                    
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-methoxyethyl)glycine                                         
                       1,900-2,400                                        
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-ethoxyethyl)-ρ-alanine                                   
                         660-1,000                                        
N.sup.2 -(4,6-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-methoxyethyl)glycine                                         
                         660-1,000                                        
N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-L-                                
arginyl-N-(2-methoxyethyl)glycine                                         
                        2,000                                             
N.sup.2 -(5,6,7,8-tetrahydro-1-naphthylsulfonyl)-                         
L-arginyl-N-(2-methoxyethyl)glycine                                       
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethyl-1-naphthylsulfonyl)-L-                             
arginyl-N-(2-methoxyethyl)glycine                                         
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-ethylthioethyl)glycine                                       
                       &gt;1,000                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-benzylglycine                                                   
                       &gt;1,000                                             
N.sup.2 -(4,6-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-benzylglycine                                                   
                       &gt;1,000                                             
N.sup.2 -(5-methoxy-1-naphthylsulfonyl)-L-                                
arginyl-N-benzylglycine                                                   
                       &gt;1,000                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-phenethylglycine                                                
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-cyclohexylglycine                                               
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-cyclohexylmethylglycine                                         
                       &gt;1,500                                             
N.sup.2 -(7-methyl-2-naphthylsulfonyl)-L-                                 
arginyl-N-tetrahydrofurfurylglycine                                       
                         600                                              
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-tetrahydrofurfurylglycine                                       
                         620                                              
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-butylalanine &gt;1,500                                             
N.sup.2 -(4,6-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-cyclohexylmethylalanine                                         
                       &gt;1,500                                             
1- N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                         
arginyl!-2-piperidinecarboxylic acid                                      
                        1,500                                             
Ethyl  1-N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-                         
L-arginyl!-4-methyl-2-piperidinecarboxylate                               
                         670-1,000                                        
1- N.sup.2 -(4,6-dimethoxy-2-napthylsulfonyl)-                            
L-arginyl!-4-methyl-2-piperidinecarboxylic                                
                         670-1,000                                        
acid                                                                      
1- N.sup.2 -(1-naphthylsulfonyl)-L-arginyl!-4-                            
methyl-2-piperidinecarboxylic acid                                        
                         700-1,000                                        
1- N.sup.2 -(5-dimethylamino-1-naphtylsulfonyl)-                          
L-arginyl!-2-piperidinecarboxylic acid                                    
                         700-1,000                                        
4- N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-L-                             
arginyl!-3-morpholinecarboxylic acid                                      
                       &gt;1,000                                             
2- N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-1-                         
arginyl!1,2,3,4-tetrahydroisoquinoline-3-                                 
                       &gt;1,000                                             
carboxylic acid                                                           
2- N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-1-                         
arginyl!-1-isoindolinecarboxylic acid                                     
______________________________________                                    
                       &gt;1,000                                             
 
    
     On the other hand, LD 50  values for N 2  -dansyl-N-butyl-L-argininamide and N 2  -dansyl-N-methyl-N-butyl-L-argininamide are 75 and 70 milligrams per kilogram, respectively. 
     The therapeutic agents in this invention may be administered to mammals, including humans, alone or in combination with pharmaceutically acceptable carriers, the proportion of which is determined by the solubility and chemical nature of the compound, chosen route of administration and standard pharmaceutical practice. For example, the compounds may be injected parenterally, that is, intramuscularly, intravenously or subcutaneously. For parenteral administration, the compounds may be used in the form of sterile solutions containing other solutes, for example, sufficient saline or glucose to make the solution isotonic. The compounds may be administered orally in the form of tablets, capsules, or granules containing suitable excipients such as starch, lactose, white sugar and the like. The compounds may be administered sublingually in the form of troches or lozenges in which each active ingredient is mixed with sugar or corn syrups, flavoring agents and dyes, and then dehydrated sufficiently to make the mixture suitable for pressing into solid form. The compounds may be administered orally in the form of solutions which may contain coloring and flavoring agents. Physicians will determine the dosage of the present therapeutic agents which will be most suitable for humans, and dosages vary with the mode of administration and the particular compound chosen. In addition, the dosage will vary with the particular patient under treatment. When the composition is administered orally, a larger quantity of the active agent will be required to produce the same effect as caused with a smaller quantity given parenterally. The therapeutic dosage is generally 10-50 mg/kg of active ingredient parenterally, 10-500 mg/kg orally per day. Having generally described the invention, a more complete understanding can be obtained by reference to certain specific examples, which are included for purposes of illustration only and are not intended to be limiting unless otherwise specified. It is to be understood that the present invention includes pharmaceutical compositions containing a compound of the invention as an active ingredient. Such compositions may be in the forms described above. In particular, the invention includes such compositions in unit dose form. 
    
    
     EXAMPLE 1 
     (A) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginine 
     
         ______________________________________                                    
Compound               LD.sub.50 (mg/kg)                                  
______________________________________                                    
N.sup.2 -(7-methyl-2-naphthylsulfonyl)-L-                                 
                       &gt;1,500                                             
arginyl-N-butylglycine                                                    
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-methoxyethyl)glycine                                         
                       1,900-2,400                                        
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-ethoxyethyl)-β-alanine                                  
                         660-1,000                                        
N.sup.2 -(4,6-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-methoxyethyl)glycine                                         
                         660-1,000                                        
N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-L-                                
arginyl-N-(2-methoxyethyl)glycine                                         
                        2,000                                             
N.sup.2 -(5,6,7,8-tetrahydro-1-naphthylsulfonyl)-                         
L-arginyl-N-(2-methoxyethyl)glycine                                       
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethyl-1-naphthylsulfonyl)-L-                             
arginyl-N-(2-methoxyethyl)glycine                                         
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-(2-ethylthioethyl)glycine                                       
                       &gt;1,000                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-benzylglycine                                                   
                       &gt;1,000                                             
N.sup.2 -(4,6-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-benzylglycine                                                   
                       &gt;1,000                                             
N.sup.2 -(5-methoxy-1-naphthylsulfonyl)-L-                                
arginyl-N-benzylglycine                                                   
                       &gt;1,000                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-phenethylglycine                                                
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-cyclohexylglycine                                               
                       &gt;1,500                                             
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-cyclohexylmethylglycine                                         
                       &gt;1,500                                             
N.sup.2 -(7-methyl-2-naphthylsulfonyl)-L-                                 
arginyl-N-tetrahydrofurfurylglycine                                       
                         600                                              
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-tetrahydrofurfurylglycine                                       
                         620                                              
N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-butylalanine &gt;1,500                                             
N.sup.2 -(4,6-dimethoxy-2-naphthylsulfonyl)-L-                            
arginyl-N-cyclohexylmethylalanine                                         
                       &gt;1,500                                             
1- N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-L-                         
arginyl!-2-piperidinecarboxylic acid                                      
                        1,500                                             
Ethyl  1-N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-                         
L-arginyl!-4-methyl-2-piperidinecarboxylate                               
                         670-1,000                                        
1- N.sup.2 -(4,6-dimethoxy-2-napthylsulfonyl)-                            
L-arginyl!-4-methyl-2-piperidinecarboxylic                                
                         670-1,000                                        
acid                                                                      
1- N.sup.2 -(1-naphthylsulfonyl)-L-arginyl!-4-                            
methyl-2-piperidinecarboxylic acid                                        
                         700-1,000                                        
1- N.sup.2 -(5-dimethylamino-1-naphtylsulfonyl)-                          
L-arginyl!-2-piperidinecarboxylic acid                                    
                         700-1,000                                        
4- N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-L-                             
arginyl!-3-morpholinecarboxylic acid                                      
                       &gt;1,000                                             
2- N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-1-                         
arginyl!1,2,3,4-tetrahydroisoquinoline-3-                                 
                       &gt;1,000                                             
carboxylic acid                                                           
2- N.sup.2 -(6,7-dimethoxy-2-naphthylsulfonyl)-1-                         
arginyl!-1-isoindolinecarboxylic Acid                                     
                       &gt;1,000                                             
______________________________________                                    
 
    
     To a well stirred solution of 83.6 g of L-arginine in 800 ml of 10% potassium carbonate solution was added 114.7 g of 6,7-dimethoxynaphthalenesulfonyl chloride in 800 ml of benzene. The reaction mixture was stirred at 60° C for 5 hours, during which time the product precipitated. After one hour at room temperature, the precipitate was filtered and washed successively with benzene and water to give 129 g (76 percent) of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginine, M.P. 252°-5° C. 
     (B) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl chloride 
     A suspension of 2.00 g of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginine in 20 ml of thionyl chloride was stirred for 2 hours at room temperature. Addition of cold dry diethyl ether resulted in a precipitate which was collected by filtration and washed several times with dry diethyl ether to give N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl chloride. 
     (C) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-butylglycine tert-butyl ester 
     To a stirred solution of 2.64 g of N-butylglycine tert-butyl ester in 20 ml of chloroform was carefully added N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl chloride obtained above. The reaction mixture was allowed to stand at room temperature for one hour. At the end of this period, the reaction mixture was washed twice with 20 ml of saturated sodium chloride solution and evaporated to dryness. The residue was triturated with a small amount of water to give a crystalline material. This was collected by filtration and recrystallized from ethanol-ethyl ether to give 2.28 g (82 percent) of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-butylglycine tert-butyl ester, M.P. 164°-166° C, I.R. (KBr): 3,390, 3,165, 1,735, 1,370 cm -1 . 
     Analysis - Calcd. for C 28  H 43  O 7  N 5  S.1/2H 2  SO 3  (percent): C, 52.98; H, 7.00; N, 11.04. Found (percent): C, 52.69; H, 6.98; N, 10.86. 
     (D) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-butylglycine 
     To a solution of 2.00 g of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-butylglycine tert-butyl ester in 20 ml of chloroform was added 50 ml of 15% HCl-ethyl acetate. The reaction mixture was stirred for 5 hours at room temperature. At the end of this period, the reaction mixture was evaporated to dryness. The residue was washed several times with dry diethyl ether and chromatographed on 80 ml of Daiaion® SK 102 ion exchange resin (200-300 mesh, H +   form, manufactured by Mitsubishi Chemical Industries Limited) packed in water, washed with water and eluted with 3% ammonium hydroxide solution. The fraction eluted from 3% ammonium hydroxide solution was evaporated to dryness to give 1.43 g (79 percent) of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-butylglycine as an amorphous solid, I.R. (KBr): 3,360, 3,140, 1,622 cm -1 . 
     Analysis - Calcd. for C 24  H 35  N 5  O 7  S (percent): C, 53.62; H, 6.56; N, 13.03. Found (percent): C, 53.48; H, 6.43; N, 12.98. 
     The following compounds are prepared in a similar manner: 
     N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl-N-butyl-β-alanine 
     N 2  -(7-methyl-2-naphthylsulfonyl)-N-(2-methoxyethyl)-N-(3-carboxypropyl)-L-argininamide 
     N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl-N-(2-methylthioethyl)glycine 
     N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl-N-(2-methylthioethyl)glycine tert-butyl ester 
     N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl-N-(2-methylthioethyl)-β-alanine 
     N 2  -(6,7-diethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methylthioethyl)glycine 
     N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methylthioethyl)glycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-N-(2-methylthioethyl)-N-(3-carboxypropyl)-L-argininamide 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-N-(3-methylthiopropyl)glycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-ethylthioethyl)-β-alanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-benzylglycine benzyl ester 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-N-benzyl-N-(3-tert-butoxycarbonylpropyl)-L-argininamide 
     N 2  -(6,7-diethoxy-2-naphthylsulfonyl)-L-arginyl-N-cyclohexylglycine 
     4-N- N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl!-N-cyclohexylaminobutyric acid 
     N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-phenethyl-β-alanine 
     N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(3-phenylpropyl)glycine 
     N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl-N-benzyl-β-alanine 
     N 2  -(5-nitro-1-naphthylsulfonyl)-L-arginyl-N-tetrahydrofurfurylglycine 
     N 2  -(7-hydroxy-2-naphthylsulfonyl)-L-arginyl-N-tetrahydrofurfurylglycine 
     N 2  -(5-cyano-1-naphthylsulfonyl)-L-arginyl-N-tetrahydrofurfurylglycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-tetrahydrofurfuryl-β-alanine 
     N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl-N-tetrahydrofurfuryl-β-alanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-tetrahydrofurfurylalanine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-N-(3-carboxypropyl)-N-tetrahydrofurfuryl-L-argininamide 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-butylalanine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-pentylalanine 
     N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl-N-butylalanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-isobutylalanine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-benzylalanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(3-phenylpropyl)alanine 
     N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl-N-benzylalanine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-cyclohexylalanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-cyclohexylmethylalanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-butylbutyrine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(3-furylmethyl)glycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(tetrahydro-3-furylmethyl)glycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-thenyl)glycine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(3-thenyl)glycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(tetrahydro-2-thenyl)glycine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-)Tetrahydro-3-thenyl)glycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-acetylethyl)glycine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(4-methoxyfuryl)glycine 
     N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl-N-(5-methylfurfuryl)glycine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(1,4-diacylohexylmethyl)glycine 
     1-(N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl)-4-methoxy piperidine-2-carbonxylic acid 
     1-(N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl)-5-methylhexamethyleneimine-2-carbonxylic acid 
     1-(N 2  -(3,7-dimethyl-2-dibenzofluranyl)-L-arginyl)-4,4-dimethyl-2-piperidine carboxylic acid 
     N 2  -(3-methoxy-5,6,7,8-tetrahydro-2-naphthylsulfonyl)-L-arginyl-N-(tetrahydro-2-pyranylmethyl)glycine 
     EXAMPLE 2 
     (A) N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl chloride 
     A suspension of 2.5 g of N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginine in 20 ml of thionyl chloride was stirred for 2 hours at room temperature. Addition of cold dry ethyl ether resulted in a precipitate which was collected by filtration and washed several times with dry ethyl ether to give N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl chloride. 
     (B) Ethyl 1- N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl!-2-piperidinecarboxylate 
     To a stirred solution of 2.2 g of ethyl 2-piperidinecarboxylate and 4.1 ml of triethylamine in 50 ml of chloroform, which was cooled in an ice-salt bath, was added in portions N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl chloride obtained above. The reaction mixture was stirred overnight at room temperature. At the end of this period, 500 ml of chloroform was added and the chloroform solution was washed twice with 50 ml of saturated sodium chloride solution, dried over anhydrous sodium sulfate and evaporated in vacuo. The oily residue was washed with ethyl ether to give 2.9 g of powdery ethyl 1- N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl!-2-piperidinecarboxylate. For analysis of the product, a portion of the product was converted to the flavianate, M.P. 192°-3° C. I.R. (KBr): 3,210, 1,747, 1,638 cm -1 . 
     Analysis - Calcd. for C 25  H 35  O 6  N 5  S.C 10  H 6  O 8  N 2  S (percent): C, 49.58; H, 4.87; N, 11.56. Found (percent): C, 49.24; H, 4.70; N, 11.85. 
     (C) 1- N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl!-2- piperidinecarboxylic acid 
     A solution of 2.8 g of ethyl 1- N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl!-2-piperidinecarboxylate in 15 ml of methanol and 10 ml of 2N-NaOH solution was warmed to 60° C and held at that temperature for 10 hours. At the end of this period, the reaction mixture was concentrated and chromatographed on 200 ml of Daiaion ® SK 102 ion exchange resin (200 - 300 mesh, H +  form, manufactured by Mitsubishi Chemical Industries Limited) packed in water, washed with ethanol-water (1:4) and eluted with ethanol-water-NH 4  OH (10:9:1). The main fraction was evaporated to dryness and washed with ethyl ether to give 2.0 g of 1- N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl!-2-piperidinecarboxylic acid as an amorphous solid. I.R. (KBr): 3,200 (broad), 1,620, 1,150 cm -1 . 
     Analysis - Calcd. for C 23  H 31  O 6  N 5  S (percent): C, 54.64; H, 6.18; N, 13.85. Found (percent): C, 56.88; H, 6.31; N, 13.83. 
     The following compounds are prepared in a similar manner: 
     N 2  -(6-chloro-2-naphthylsulfonyl)-L-arginyl-N-butylglycine 
     N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl-N-(2-ethoxyethyl)glycine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methylthioethyl)glycine 
     N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methylthioethyl)glycine 
     N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-phenethyl-β-alanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-N-benzyl-N-(3-carboxypropyl)-L-argininamide 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-cyclohexylnorleucine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-butylisoleucine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-pentylbutyrine 
     N 2  -(6,7-diethoxy-2-naphthylsulfonyl)-L-arginyl-N-butylalanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-cycloheptylalanine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)alanine 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-ethoxyethyl)alanine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-cyclohexyl-β-alanine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)norvaline 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-benzylleucine 
     1- N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(6-methoxy-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(5-ethoxy-1-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(7-ethoxy-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(6,7-diethoxy-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl!-4-tert-butyl-2-piperidinecarboxylic acid 
     Phenyl 1- N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylate 
     Benzyl 1- N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylate 
     Benzyl 1- N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl!-4-methyl-2-piperidinecarboxylate 
     1-N 2  -(5-nitro-1-naphthylsulfonyl)-L-arginyl!-4-methyl-2-piperidinecarboxylic acid 
     1- N 2  -(7-hydroxy-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(5-cyano-1-naphthylsulfonyl)-L-arginyl!-4-methyl-2-piperidinecarboxylic acid 
     1- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(5-dimethylamino-1-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(5,6,7,8-tetrahydro-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylic acid 
     1- N 2  -(5-dimethylamino-1-naphthylsulfonyl)-L-arginyl!-4-methyl-2-piperidinecarboxylic acid 
     1- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!-6-methyl-2-piperidinecarboxylic acid 
     1- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!-4-tert-butyl-2-piperidinecarboxylic acid 
     1- N 2  -(5-nitro-1-naphthylsulfonyl)-L-arginyl!indoline-2-carboxylic acid 
     2- N 2  -(5-cyano-1-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     4- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!thiomorpholine-3-carboxylic acid 
     4- N 2  -(6,7-dimethyl-2-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylic acid 
     4- N 2  -(5,6,7,8-tetrahydro-2-naphthylsulfonyl)-L-arginyl!-3-carboxythiomorpholine-1-oxide 
     4- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylic acid 
     4- N 2  -(7-chloro-2-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylic acid 
     4- N 2  -(7-hydroxy-2-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylic acid 
     4- N 2  -(5-nitro-1-naphthylsulfonyl)-L-arginyl!thiomorpholine-3-carboxylic acid 
     4- N 2  -(5-cyano-1-naphthylsulfonyl)-L-arginyl!thiomorpholine-3-carboxylic acid 
     4- N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylic acid 
     Ethyl 4- N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylate 
     4- N 2  -(5-ethoxy-1-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylic acid 
     4- N 2  -(5-dimethylamino-1-naphthylsulfonyl)-L-arginyl!thiomorpholine-3-carboxylic acid 
     3- N 2  -(1-naphthylsulfonyl)-L-arginyl!thiazolidine-4-carboxylic acid 
     2- N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid 
     2- N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     2- N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 
     2- N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     2- N 2  -(5-ethoxy-1-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 
     EXAMPLE 3 
     (A) N G  -nitro-N 2  -(tert-butoxycarbonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester 
     To a stirred solution of 28.3 g of N G  -nitro-N 2  -(tert-butoxycarbonyl)-L-arginine in 450 ml of dry tetrahydrofuran were added in turn 12.4 ml of triethylamine and 12.4 ml of isobutyl chloroformate while keeping the temperature at -5° C. After 15 minutes, to this was added 14.2 g of N-(2-methoxyethyl)glycine ethyl ester, and the mixture was stirred for 15 minutes at -5° C. At the end of this period, the reaction mixture was warmed to room temperature. The solvent was evaporated and the residue taken up in 400 ml of ethyl acetate, and washed successively with 200 ml of water, 100 ml of 5% sodium bicarbonate solution, 100 ml of 10% citric acid solution and 200 ml of water. The ethyl acetate solution was dried over anhydrous sodium sulfate. Upon evaporation of the solvent, the residue was dissolved in 20 ml of chloroform, and the solution was applied to a column (80 cm × 6 cm) of 500 g of silica gel packed in chloroform. The product was eluted first with chloroform, and then 3% methanol-chloroform. The fraction eluted from 3% methanol-chloroform was evaporated to dryness to give 25.8 g (63 percent) of N G  -nitro-N 2  -(tert-butoxycarbonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester in the form of a syrup. I.R. (KBr): 3,300, 1,740, 1,690 cm -1 . 
     (B) N G  -nitro-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester hydrochloride 
     To a stirred solution of 29.8 g of N G  -nitro-N 2  -(tert-butoxycarbonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester in 50 ml of ethyl acetate was added 80 ml of 10% dry HCl-ethyl acetate at 0° C. After 3 hours, to this solution was added 200 ml of dry ethyl ether to precipitate a viscous oily product. 
     This was filtered and washed with dry ethyl ether to give 24.1 g of N G  -nitro-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester hydrochloride as an amorphous solid. 
     (C) N G  -nitro-N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester 
     To a stirred solution of 4.0 g of N G  -nitro-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester hydrochloride in 20 ml of water and 20 ml of dioxane were added in turn 2.5 g of sodium bicarbonate, and 3.5 g of 6,7-dimethoxy-2-naphthalenesulfonyl chloride in 30 ml of dioxane at 5° C, and stirring was continued for 3 hours at room temperature. At the end of this period, the solvent was evaporated and the residue dissolved in 40 ml of chloroform, and washed with 10 ml of 1N hydrochloric acid solution and 20 ml of water. 
     The chloroform solution was dried over anhydrous sodium sulfate. Upon evaporation of the solvent, the residue was chromatographed on 50 g of silica gel packed in chloroform, washed with chloroform and eluted with 3% methanol-chloroform. The fraction eluted from 3% methanol-chloroform was evaporated to give 5.3 g (87 percent) of N G  -nitro-N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester in the form of an amorphous solid. I.R. (KBr): 3,240, 1,740, 1,630 cm -1 . 
     (D) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester 
     To a solution of 3.00 g of N G  -nitro-N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester in 50 ml of ethanol and 0.5 ml of acetic acid was added 0.5 g of palladium-black and then the mixture was shaken in a hydrogen atmosphere for 100 hours at room temperature. At the end of this period, the ethanol solution was filtered to remove the catalyst and evaporated to give an oily product. Reprecipitation with ethanol-ethyl ether gave 2.53 g (91%) of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester. 
     For analysis of the product, a portion of the product was converted to the flavianate; M.P. 185° C, I.R. (KBr): 3,375, 3,200, 1,740 cm -1 . 
     Analysis - Calcd. for C 25  H 37  N 5  O 8  S.C 10  H 6  N 2  O 8  S (percent): C, 47.67; H, 4.92; N, 11.12. Found (percent): C, 47.64; H, 4.81; N, 11.12. 
     (E) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine 
     A solution of 2.5 g of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester in 5 ml of ethanol and 7 ml of 1N sodium hydroxide solution was stirred for 30 hours at room temperature. At the end of this period, the solution was concentrated to 5 ml, chromatographed on 80 ml of Daiaion ® SK 102 ion exchange resin (200 - 300 mesh, H +  form manufactured by Mitsubishi Chemical Industries Limited) packed in water, washed with water, and eluted with 3% ammonium hydroxide solution. The fraction eluted from 3% ammonium hydroxide solution was evaporated to dryness, and the residue was purified by reprecipitation with ethanol-ethyl ether to give 1.32 g (72 percent) of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine as an amorphous solid. I.R. (KBr): 3,380, 3,180, 1,630 cm -1 . 
     Analysis - Calcd. for C 23  H 33  N 5  O 8  S (percent): C, 51.20; H, 6.17; N, 12.98. Found (percent): C, 50.93; H, 6.02; N, 12.63. 
     The following compounds are prepared in a similar manner: 
     N 2  -(5,6,7,8-tetrahydro-2-naphthylsulfonyl)-L-arginyl-N-(2-ethoxyethyl)glycin 
     N 2  -(5,6,7,8-tetrahydro-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine 
     N 2  -(7-ethyl-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine 
     N 2  -(5-methoxy-1-naphthylsulfonyl)-L-arginyl-N-cyclohexylglycine 
     N 2  -(7-methoxy-2-naphthylsulfonyl)-L-arginyl-N-(3-cyclohexyl)propylglycine 
     2- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 
     2- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     2- N 2  -(6,7-dimethyl-2-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     2- N 2  -(2-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     2- N 2  -(5,6,7,8-tetrahydro-2-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 
     2- N 2  -(5,6,7,8-tetrahydro-1-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     2- N 2  -(5-chloro-1-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 
     1- N 2  -(5-hydroxy-1-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroquinoline-2-carboxylic acid 
     2- N 2  -(5-dimethylamino-1-naphthylsulfonyl)-L-arginyl!isoindoline-1-carboxylic acid 
     2- N 2  -(1-naphthylsulfonyl)-L-arginyl!-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid 
     EXAMPLE 4 
     (A) L-arginyl-N-(2-methoxyethyl)glycine ethyl ester hydrochloride 
     To a solution of 4.0 g of N G  -nitro-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester hydrochloride in 50 ml of ethanol was added 0.5 g of palladium-black and then the mixture was shaken in a hydrogen atmosphere for 150 hours at room temperature. At the end of this period, the ethanol solution was filtered to remove the catalyst and evaporated to give an oily product. Reprecipitation with ethanol-ethyl ether gave 3.0 g (81%) of L-arginyl-N-(2-methoxyethyl)glycine ethyl ester hydrochloride in the form of a powder. 
     (B) N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester 
     To a well stirred solution of 2.00 g of L-arginyl-N-(2-methoxyethyl)glycine ethyl ester hydrochloride and 1.95 g of K 2  CO 3  in 20 ml of water and 10 ml of dioxane was added dropwise a solution of 2.17 g of 4,6-dimethoxy-2-naphthalenesulfonyl chloride in 30 ml of dioxane over a period of 30 minutes while maintaining the temperature at 0° C. The reaction mixture was stirred for an additional 5 hours at room temperature. At the end of this period, the solvent was evaporated and the residue taken up in 50 ml of chloroform. The chloroform solution was filtered to remove the insoluble material and dried over anhydrous sodium sulfate. Addition of 150 ml of ethyl ether to the chloroform solution resulted in a precipitate which was separated by decantation and purified by reprecipitation with ethanol-ethyl ether to give 2.31 g (72 percent) of N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine ethyl ester. 
     For analysis of the product, a portion of the product was converted to the flavianate; M.P. 225°-227° C, I.R. (KBr): 3,375, 3,200, 1,742 cm -1 . 
     Analysis - Calcd. for C 25  H 37  N 5  O 8  S.C 10  H 6  N 2  O 8  S (percent): C, 47.67; H, 4.92; N, 11.12. Found (percent): C, 47.62; H, 4.84; N, 11.18. 
     (B) N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine 
     N 2  -(4,6-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine was obtained in the form of an amorphous solid in a manner similar to that described in Example 3 (E). 
     I.R. (KBr): 3,360, 3,180, 1,610 cm -1 . 
     EXAMPLE 5 
     (A) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-phenethylglycine 
     N G  -nitro-N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-phenethylglycine benzyl ester was prepared by the procedure described in Example 3, and has a melting point of 133°-5° C. 
     To a solution of 3.00 g of N G  -nitro-N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-phenethylglycine benzyl ester in 50 ml of ethanol and 0.5 ml of acetic acid was added 0.5 g of palladium-black and then the mixture was shaken in a hydrogen atmosphere for 100 hours at room temperature. At the end of this period, the ethanol solution was filtered to remove the catalyst and evaporated to dryness. The residue was washed several times with dry ethyl ether and chromatographed on 80 ml of Daiaion ® SK 102 ion exchange resin (200 - 300 mesh, H 30   form, manufactured by Mitsubishi Chemical Industries Limited) packed in water, washed with water, and eluted with 3% ammonium hydroxide solution. The fraction eluted from 3% ammonium hydroxide solution was evaporated to dryness to give 1.71 g (70%) of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-phenethylglycine as an amorphous solid. 
     I.R. (KBr): 3,360, 3,200, 1,590 cm -1 . 
     Analysis - Calcd. for C 28  H 35  N 5  O 7  S (percent): C, 57.42; H, 6.02; N, 11.97. Found (percent): C, 57.09; H, 6.06; N, 11.74. 
     EXAMPLE 6 
     (A) N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycyl chloride hydrochloride 
     A suspension of 2.00 g of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine in 20 ml of thionyl chloride was stirred for 2 hours at room temperature. Addition of cold dry ethyl ether resulted in a precipitate which was collected by filtration and washed several times with dry ethyl ether to give N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycyl chloride hydrochloride. 
     (B) N 2  (6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine m-tolyl ester hydrochloride 
     A mixture of 2.00 g of m-cresol and N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycyl chloride hydrochloride obtained above was heated at 90° C for 50 minutes. At the end of this period, the reaction mixture was cooled, washed several times with dry ethyl ether, and then dissolved in 10 ml of dry ethyl alcohol. Addition of cold dry ethyl ether resulted in a precipitate which was washed several times with dry ethyl ether to give 2.12 g (86 percent) of N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-methoxyethyl)glycine m-tolyl ester hydrochloride in the form of a powder. 
     I.R. (KBr): 3,250, 3,100, 1,740, 1,640 cm -1 . 
     The following compounds are prepared in a similar manner: 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-ethylthioethyl)glycine phenyl ester 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-(2-ethylthioethyl)glycine benzyl ester 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-benzylglycine phenyl ester 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-furfurylglycine benzyl ester 
     N 2  -(6,7-dimethoxy-2-naphthylsulfonyl)-L-arginyl-N-tetrahydrofurfurylglycine phenyl ester 
     Phenyl 1- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylate 
     Benzyl 1- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!-4-ethyl-2-piperidinecarboxylate 
     Benzyl 1- N 2  -(6-chloro-2-naphthylsulfonyl)-L-arginyl!-4-methyl-2-piperidinecarboxylate 
     Ethyl 4- N 2  -(7-methyl-2-naphthylsulfonyl)-L-arginyl!morpholine-3-carboxylate 
     Various other N 2  -arylsulfonyl-L-argininamides or salts thereof were synthesized in accordance with the procedure of the above examples, and the test results are summarized in Table 2. 
     EXAMPLE 7 
     Tablets suitable for oral administration. 
     Tablets containing the ingredients indicated below may be prepared by conventional techniques. 
     
         ______________________________________                                    
                       Amount                                             
                       per                                                
                       tablet                                             
Ingredient             (mg)                                               
______________________________________                                    
N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-                                  
                       250                                                
L-arginyl-N-(2-methoxyethyl)glycine                                       
Lactose                140                                                
Corn starch             35                                                
Talcum                  20                                                
Magnesium stearate      5                                                 
   Total                  450 mg                                          
______________________________________                                    
 
    
     EXAMPLE 8 
     Capsules for oral administration. 
     Capsules of the below were made up by thoroughly mixing together batches of the ingredients and filling hard gelatin capsules with the mixture. 
     
         ______________________________________                                    
                       Amount                                             
                       per                                                
                       capsule                                            
Ingredient             (mg)                                               
______________________________________                                    
N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-                                  
                       250                                                
L-arginyl-N-(2-methoxyethyl)glycine                                       
Lactose                250                                                
   Total                  500 mg                                          
______________________________________                                    
 
    
     EXAMPLE 9 
     Sterile solution for infusion. 
     The following ingredients are dissolved in water for intravenous perfusion and the resulting solution is then sterilized. 
     
         ______________________________________                                    
Ingredients            Amount (g)                                         
______________________________________                                    
N.sup.2 -(7-methoxy-2-naphthylsulfonyl)-                                  
                       25                                                 
L-arginyl-N-(2-methoxyethyl)glycine                                       
Buffer system          As desired                                         
Glucose                25                                                 
Distilled water        500                                                
______________________________________                                    
 
    
     APPENDIX 
     There are now described in greater detail preparation of materials of the kind used in the foregoing examples. 
     PREPARATION A 
     Arylsulfonyl chlorides 
     (A) Sodium 6,7-dimethoxy-2-naphthalenesulfonate 
     To a well stirred solution of 70.8 g of sodium 6,7-dihydroxy-2-naphthalenesulfonate and 77.2 g of sodium hydroxide in 450 ml of water was added dropwise 230 ml of dimethyl sulfate at 60° C over a period of one hour, during which time the product precipitated. To this reaction mixture was added in portions 38.8 g of sodium hydroxide, and stirring was continued for one hour. After one hour at room temperature, the precipitate was filtered, washed with ethanol and dried to give 50 g of sodium 6,7-dimethoxy-2-naphthalenesulfonate. 
     (B) 6,7-dimethoxy-2-naphthalenesulfonyl chloride 
     To a stirred suspension of 50 g of finely divided sodium 6,7-dimethoxy-2-naphthalenesulfonate in 100 ml of dimethylformamide was added dropwise 62.2 ml of thionyl chloride at room temperature. After 30 minutes, the reaction mixture was poured into 1 l of ice water, and the precipitate filtered and then dissolved into 250 ml of benzene. The benzene solution was repeatedly washed with water and dried over anhydrous sodium sulfate. The solvent was evaporated to dryness in vacuo, and the residue was recrystallized from benzene-n-hexane (1 : 1) to give 32 g of 6,7-dimethoxy-2-naphthalenesulfonyl chloride, M.P. 127.5°-129.5° C. 
     Analysis - Calcd. for C 12  H 11  O 4  SCl (percent): C, 50.26; H, 3.87; Cl, 12.37. Found (percent): C, 50.45; H, 4.00; Cl, 12.33. The following arylsulfonyl chlorides not previously reported in the chemical literature were synthesized by the aforementioned procedure which is essentially that as described in E. H. Rodd, &#34;Chemistry of Carbon Compounds&#34;, Elsevier Publishing Company, 1954, Vol III, P. 441-469. 
     
         ______________________________________                                    
No.  Arylsulfonyl Chloride    M.P. (° C)                           
______________________________________                                    
      ##STR739##                118 - 119.5                               
2                                                                         
      ##STR740##              136.5 - 138.5                               
3                                                                         
      ##STR741##              137 - 139                                   
______________________________________                                    
 
    
     PREPARATION B 
     Amino acid derivatives 
     (A) N-butylglycine tert-butyl ester 
     To 36.5 g of butylamine was added with stirring 15.05 g of tert-butyl chloroacetate over a period of 30 minutes, while maintaining the temperature at 30°-70° C. The reaction mixture was held at 70° C for an additional one hour. At the end of this period, the excess butyl amine was evaporated in vacuo, and the residue was taken up in 40 ml of 2N NaOH solution and 50 ml of benzene, transferred into a separatory funnel and well shaken. The benzene solution was separated, washed with water, dried over anhydrous sodium sulfate and filtered. After evaporation of benzene, the residue was distilled under reduced pressure to give 17.0 g (90.9 percent) of N-butylglycine tert-butyl ester, B.P. 76° C/4 mmHg. The following amino acid tert-butyl esters not previously reported in the chemical literature were synthesized by the aforementioned procedure which is essentially that as taught by A. J. Speziale et al., J. Org. Chem. 25 731 (1960). 
     
         ______________________________________                                    
No.   Amino Acid Derivative                                               
                         B.P.                                             
______________________________________                                    
       ##STR742##        95° C/20 mmHg                             
2                                                                         
       ##STR743##        65° C/5 mmHg                              
3                                                                         
       ##STR744##        89 - 90° C/2.5 mmHg                       
4                                                                         
       ##STR745##        83 - 5° C/1.5 mmHg                        
5                                                                         
       ##STR746##        125 - 130° C/4 mmHg                       
6                                                                         
       ##STR747##        61 - 2° C/2 mmHg                          
7                                                                         
       ##STR748##        94° C/3 mmHg                              
8                                                                         
       ##STR749##        60 - 3° C/3 mmHg                          
9                                                                         
       ##STR750##        95 - 7° C/5 mmHg                          
10                                                                        
       ##STR751##        102° C/4 mmHg                             
11                                                                        
       ##STR752##        166° C/10 mmHg                            
12                                                                        
       ##STR753##        106 - 9° C/1.5 mmHg                       
13                                                                        
       ##STR754##        97° C/2.5 mmHg                            
14                                                                        
       ##STR755##        101° C/5 mmHg                             
15                                                                        
       ##STR756##        101° C/5 mmHg                             
16                                                                        
       ##STR757##        105° C/4 mmHg                             
17                                                                        
       ##STR758##        129 - 130° C/8 mmHg                       
18                                                                        
       ##STR759##        145° C/15 mmHg                            
19                                                                        
       ##STR760##        156° C/10 mmHg                            
20                                                                        
       ##STR761##        93° C/26 mmHg                             
21                                                                        
       ##STR762##        110° C/27 mmHg                            
22                                                                        
       ##STR763##        124° C/26 mmHg                            
23                                                                        
       ##STR764##        88 - 90° C/6 mmHg                         
24                                                                        
       ##STR765##        116 - 8° C/2 mmHg                         
25                                                                        
       ##STR766##        167° C/16 mmHg                            
26                                                                        
       ##STR767##        125° C/16 mmHg                            
27                                                                        
       ##STR768##        141° C/15 mmHg                            
28                                                                        
       ##STR769##        89° C/3 mmHg                              
29                                                                        
       ##STR770##        111° C/1 mmHg                             
30                                                                        
       ##STR771##        91 - 2° C/1 mmHg                          
31                                                                        
       ##STR772##        115° C/2 mmHg                             
32                                                                        
       ##STR773##        82 - 84° C/2 mmHg                         
33                                                                        
       ##STR774##        150° C/0.5 mmHg                           
34                                                                        
       ##STR775##        95 - 6° C/2 mmHg                          
35                                                                        
       ##STR776##                                                         
______________________________________                                    
 
    
     (B) N-(2-methoxyethyl)glycine ethyl ester 
     To a stirred solution of 165.2 g of 2-methoxyethylamine and 202.4 g of triethylamine in 1 l of benzene was added dropwise a solution of 334.0 g of ethyl bromoacetate in 200 ml of benzene in one hour at room temperature. At the end of this period, the mixture was heated at reflux for 2 hours to complete the reaction. Upon chilling, the triethylamine hydrobromide was removed by filtration and washed with benzene. After removal of the solvent, the product was distilled in vacuo to yield 242.8 g (75.3 percent) of N-(2-methoxyethyl)glycine ethyl ester, B.P. 73°-5° C/4 mmHg. The following amino acid ethyl esters not previously reported in the chemical literature were synthesized by the aforementioned procedure which is essentially that as taught by A. J. Speziale et al., J. Org. Chem., 25 731 (1960). 
     
         ______________________________________                                    
                         M.P. (° C) or B.P.                        
No.  Amino Acid Ethyl Ester                                               
                         (° C/mmHg)                                
______________________________________                                    
      ##STR777##          57-8° C/3 mmHg                           
2                                                                         
      ##STR778##          63-4° C/3 mmHg                           
3                                                                         
      ##STR779##          91-3° C/2 mmHg                           
4                                                                         
      ##STR780##         101-2° C                                  
5                                                                         
      ##STR781##         113-6° C/3 mmHg                           
6                                                                         
      ##STR782##         116-7° C/1 mmHg                           
7                                                                         
      ##STR783##         78-80° C/2 mmHg                           
8                                                                         
      ##STR784##          63-4° C                                  
______________________________________                                    
 
    
     (C) N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate 
     To a solution of 55.8 g of N-(2-methoxyethyl)glycine tert-butyl ester in 200 ml of benzene was added 63.8 g of benzyl alcohol and 72.9 g of p-toluenesulfonic acid monohydrate. The mixture was heated at reflux for 10  hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solution was concentrated in vacuo, and to the residue was added 300 ml of dry ethyl ether. After 2 hours at room temperature, the formed precipitate was filtered, washed with dry ethyl ether and then recrystallized from ethyl acetate to yield 99.2 g (85 percent) of N-(2-methoxyethyl)glycine benzyl ester p-toluenesulfonate, M.P. 95°-6° C. The following amino acid benzyl ester p-toluenesulfonate not previously reported in the chemical literature were synthesized by the aforementioned procedure. 
     
         ______________________________________                                    
      Amino Acid Benzyl Ester                                             
No.   p-Toluenesulfonate      M.P. (° C)                           
______________________________________                                    
       ##STR785##              97 - 9                                     
2                                                                         
       ##STR786##             122 - 4                                     
3                                                                         
       ##STR787##              94 - 5                                     
4                                                                         
       ##STR788##              66 - 8                                     
5                                                                         
       ##STR789##             101 - 2                                     
6                                                                         
       ##STR790##             140 - 3                                     
7                                                                         
       ##STR791##             154 - 6                                     
8                                                                         
       ##STR792##             133- 5                                      
9                                                                         
       ##STR793##             133 - 5                                     
10                                                                        
       ##STR794##             133 - 8                                     
11                                                                        
       ##STR795##             103 - 6                                     
12                                                                        
       ##STR796##              92 - 4                                     
13                                                                        
       ##STR797##             123 - 6                                     
14                                                                        
       ##STR798##              119 - 123                                  
15                                                                        
       ##STR799##             130 - 1                                     
______________________________________                                    
 
    
     PREPARATION C 
     2-Piperidinecarboxylic acids and esters thereof 
     (A) 4-methyl-2-piperidinecarbonitrile 
     To 500 g of 10% sodium hypochlorite solution cooled in an ice bath, there was added dropwise a solution of 33.6 g (0.21 mole) of 4-methylpiperidine acetate in 10 ml of water over a period of 1 hour. At the end of this period, the reaction product was extracted twice with 500 ml of ethyl ether and dried over anhydrous sodium sulfate. After evaporation of ethyl ether, the residue was added dropwise to a solution of 11.8 g (0.21 mole) of potassium hydroxide in 100mls of 96% ethanol under reflux. Refluxing was continued for an additional 10 minutes. Ethanol was evaporated, and the residue was dissolved into 50 ml of 2N sodium hydroxide solution and then extracted with ether. The ether layers was dried over anhydrous sodium sulfate and then ether evaporated. The residue was added to an ice-cooled solution of 27 g (1 mole) of hydrogen cyanide and 25 ml of concentrated hydrochloric acid in 300 ml of water. The solution was stirred at a temperature of 10° to 20° C for 4 hours and thereafter made basic by the addition of solid sodium hydroxide. The reaction product was extracted with ether, dried over anhydrous sodium sulfate and then distilled under reduced pressure to give 17 g (66%) of 4-methyl-2-piperidinecarbonitrile, B.P. 96°-97° C/10 mmHg. The following 2-piperidinecarbonitriles not previously reported in the chemical literature were synthesized by the aforementioned procedure which is essentially that as taught by Grundon et al., J. Chem. Soc., 1963, 3898, Grundon et al., J. Chem. Soc., 1964, 2448, R. Bonnett et al., J. Chem. Soc., 1959, 2092 and H. Bohme et al., Ber., 92 1613 (1959). 
     
         ______________________________________                                    
 ##STR800##                                                               
No.  R.sub.7            B.P.                                              
______________________________________                                    
1    4CH.sub.2 CH.sub.3 105-106° C/9 mmHg.                         
2    4CH.sub.2 CH.sub.2 CH.sub.3                                          
                        116° C/8 mmHg.                             
      ##STR801##        104° C/4 mmHg.                             
4    2CH.sub.3                                                            
______________________________________                                    
 
    
     (B) 4-Methyl-2-piperidinecarboxylic acid hydrochloride 
     A solution of 16 g of 4-methyl-2-piperidinecarbonitrile in 250 ml of 6N hydrochloric acid was refluxed for 6 hours. After evaporation of the solvent, the residue was recrystallized from water to give 13 g of 4-methyl-2-piperidinecarboxylic acid hydrochloride. 
     (C) Ethyl 4-methyl-2-piperidinecarboxylate 
     A solution of 13 g (0.072 mole) of 4-methyl-2-piperidinecarboxylic acid hydrochloride and 50 ml of thionyl chloride in 300 ml of ethanol was refluxed for 4 hours. At the end of this period, the solvent was evaporated under reduced pressure, and the residue was extracted with a solution of chloroform and saturated potassium carbonate solution. The chloroform layer was dried over anhydrous sodium sulfate and then chloroform was evaporated. Distillation of the residue gave 7.4 g (60%) of ethyl 4-methyl-2-piperidinecarboxylate, B.P. 76°-77° C/3 mmHg. 
     (D) Benzyl 4-methyl-2-piperidinecarboxylate p-toluenesulfonate 
     A solution of 20 g (0.112 mole) of 4-methyl-2-piperidinecarboxylic acid hydrochloride, 24 g (0.224 mole) of benzyl alcohol and 25.6 g (0.134 mole) of p-toluenesulfonic acid monohydrate in 100 ml of benzene was refluxed for 5 hours with the continuous removal of water through a Dean-Stark water trap. At the end of this period, the solvent was distilled off, and the residue was washed with ether-n-hexane and recrystallized to give 10 g (22%) of benzyl 4-methyl-2-piperidinecarboxylate p-toluenesulfonate, M.P. 160°-163° C. The following 2-piperidinecarboxylates not previously reported in the chemical literature were synthesized by the aforementioned procedure. 
     
         ______________________________________                                    
 ##STR802##                                                               
                    Addition                                              
No.  R.sub.7        moiety    B.P.                                        
______________________________________                                    
1    4CH.sub.2 CH.sub.3                                                   
                    --        82-4° C/3.5 mmHg                     
2    4CH.sub.2 CH.sub.2 CH.sub.3                                          
                    HCl                                                   
      ##STR803##    --        95-6° C/2 mmHg                       
4    2CH.sub.3      --        57° C/3 mmHg                         
______________________________________                                    
 
    
     Morpholine-3-carboxylic acid hydrochloride was prepared by the procedure described above, and has a melting point of 200°-2° C. The following starting materials for the preparation of the N 2  -arylsulfonyl-L-argininamides were prepared by the procedures described in the following literatures: 
     
         ______________________________________                                    
Compound         Literature                                               
______________________________________                                    
 ##STR804##      J. Org. Chem., 29 2203 (1964)                            
 ##STR805##      J. Org.Chem., 29 2203 (1964)                             
 ##STR806##      J. Am. Chem. Soc., 59 200 (1937)                         
 ##STR807##      Zh. Obshch. Khim., 9 2245 (1973)                         
 ##STR808##      Ber., 44 2034 (1911)                                     
 ##STR809##      Ber., 65 927 (1932)                                      
______________________________________                                    
 
    
     The methyl or ethyl ester of the aforementioned compounds were prepared by a conventional esterification procedure. Ethyl thiomorpholine-3-carboxylate has a boiling point of 108° C/4 mmHg. Diethyl piperidine-2,6-dicarboxylate hydrochloride was prepared by the conventional esterification of piperidine-2,6-dicarboxylic acid and has a melting point of 184°-6° C. Isoindoline-1-carboxylic acid was prepared by a procedure similar to that for the preparation of isoquinoline-3-carboxylic acid described in Ber., 44 2034 (1911). Ethyl isoindoline-1-carboxylate hydrochloride was prepared by the conventional esterification of isoindoline-1-carboxylic acid and has a melting point of 139°-140.5° C. Having now fully described the invention, it will be apparent to one of ordinary skill in the art that many changes and modifications can be made thereto without departing from the spirit of the invention as set forth herein.