Agents for treating disorders from cerebral neuro-degeneration
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to an agent for treating disorders from cerebral neuro-degeneration comprising a specified cyclopropachromen derivative or a pharmaceutically acceptable salt thereof as an active ingredient. 
     2. Prior Art 
     Organic and functional disorders in the human brain which controls high grade mental actions and motor functions are critical diseases that concern not only the physical but also the mental well-being of a person. In a rapidly aging society, the development of effective methods of treating brain disorders as well as therapeutic drugs is of pressing importance. However, despite many years of studies conducted to unravel the functions of the brain, only a partial understanding has so far been achieved and an understanding of individual diseases, still less a comprehensive and systematic knowledge of the brain, has not yet been obtained. 
     While many brain diseases are known today, Alzheimer&#39;s disease (hereinafter sometimes abbreviated as AD) and senile dementia of the Alzheimer&#39;s type (hereinafter sometimes referred to as SDAT), both of which are progressive organic diseases of the brain that are characterized by lowered cognitive capabilities due to the degenerative atrophy of neurocytes in the brain, are becoming major social concerns requiring the implementation of effective care methods since the number of patients suffering from these diseases, especially in industrialized countries is rapidly increasing, and the progression of these diseases results in severe disability and ultimate death for those afflicted. 
     Under these circumstances, industrialized countries are engaged in nationwide projects for the establishment of effective methods for treating AD and SDAT. However, even the causes of the diseases have not been properly elucidated. Only the morphological changes that can be observed in the brain or the biochemical changes as the consequences have been partly unravelled, but no effective therapy has yet been established. 
     Cholinergic agents including choline precursors, cholinesterase inhibitors, etc. are being tested, on the basis of the cholinergic theory, in clinical fields as nosotropic agents for treating AD and SDAT. However, the evaluation on the utility of these therapeutics is varied and no single drug exhibits definite therapeutic effects. 
     Three basic methods may be conceived of to treat neurodegenetative diseases including AD and SDAT: (1) suppressing or preventing the degerative process of neurons; (2) compensating for the lost function of neurons with a drug; and (3) promoting the plasticity of remaining neurons to form a new neuro-circuit. The aforementioned cholinergic agents and cholinesterase inhibitors are within the class (2) since they are focused on the fact that, in a characteristic pathological symptom of AD and SDAT, cholinergic nerve fascicles that project from the basal forebrain to the cerebral cortex and the hippocampus undergo atrophic degeneration, yet acetylcholine receptors in the cerebral cortex and the hippocampus which are the cells that control those cholinergic nerve fascicles remain in a normal state. These drugs are expected to work effectively in the case of dysfunction of acetylcholine systems but no definite therapeutic effects are anticipated for diseases such as AD and SDAT which cannot be fully explained solely on the basis of the dysfunction of acetylcholine systems. 
     Aggravation of brain diseases could be prevented if the degenerative process of neurons could be suppressed as in (1). If a new neuron network could be formed by promoting the compensatory functional recovery of remaining neurons as in (3), not only could the progress of the diseases be prevented but also positive recovery of neurofunctions could reasonably be expected. 
     A drug that has been proposed in line with these approaches is a nerve growth factor (which is hereinafter referred to as &#34;NGF&#34;). NGF has long been known as a factor that is essential to the existence of sympathetic ganglion and sensory ganglion neurons in the peripheral nervous system, and hence extensive studies have been conducted on NGF. Recently, it has become clear that NGF also takes part in the existence and sustained functions of cholinergic neurons in the basal forebrain which are important to memory and learning. Thus the possibility of using NGF as an effective means of recovering part of the brain functions has been studied. However, NGF is a basic protein having a molecular weight of ca. 27,000 and the efforts to develop a direct method of compensatory therapy using NGF have not yet achieved a prospect for applicaton in clinical fields since they involve many problems to be solved as regards the methods of its production and administration. 
     Under these circumstances, increasing attention has recently been drawn by ganglioside as a non-peptide trophic factor like substance. For example, L. Facci et al. reported in J. Neurochem., 42, 299-305 (1985) that monosialoganglioside (GM 1 ) promoted the formation of nerve dendrites in cultured cells derived from mouse neuroblasts. L. F. Agnati et al., Acta Physiol. Scand., 119, 347-364 (1983) and G. Toffano et al., Brain Res., 296, 233-239 (1984) reported that GM 1  inhibited the degeneration of the cell body of nigra dopamine neurons that occurred after the removal of the cortex on one side of the brain. Further, G. Jonsson et al. reported in Neurosci. Lett. (Suppl.), 14, 185 (1983) that GM 1  worked suppressively on the decrease in 5-HT in the frontal and occipital lobes that was caused by pretreatment with 5,7-dihydroxytriptamine. These reports did not make it clear whether the action of ganglioside was direct or indirect in relation to the intermediary of the neurotrophic factor in NGF but they did show that ganglioside had the ability to either inhibit the degeneration of neurons or promote the compensatory functional recovery of a degenerated nerve circuit. Therefore, these observations suggest the possibility of new pharmaceutical therapy of AD and SDAT. 
     In fact, however, ganglioside is a glycosphingolipid containing sialic acid and GM 1 , too, is a high-molecular weight compound that is the condensate of sialic acid, four saccharides and ceramide. Hence, the use of ganglioside as a drug for treating AD and SDAT involves several problems to be solved in terms of the methods of preparation and administration. 
     SUMMARY OF THE INVENTION 
     Under these circumstances, the present inventors conducted intensive studies and found compounds that were easy-to-synthesize. They are low molecular weight compounds that are capable of promoting the extension of nerve dendrites and that are as effective as NGF and ganglioside in suppressing the degenerative process of nerves or regenerating a damage nerve network to promote the recovery of its functions. The present invention has been accomplished on the basis of this finding and has as an object the provision of an entirely new therapeutic agent that relies upon the concept of recovering the functions of cerebral nerves by enhancing the plasticity of synapses and the level of learning activities. 
     DETAILED DESCRIPTION OF THE INVENTION 
     According to the present invention, a therapeutic agent for alleviating disorders resulting from cerebral neuro-degeneration which comprises a cyclopropachromen derivative represented by the following general formula (I): ##STR2## wherein n is an integer of from 2 to 5; 
     the carbon atom in the --(CH 2 ) n  --moiety may be optionally substituted with a methyl group or a hydroxyl group; 
     R 1  and R 2  independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a phenyl group or an aralkyl group having 7 to 10 carbon atoms; or alternatively R 1  and R 2  form together with the nitrogen atom to which they are attached, a morpholino group, a thiomorpholino group, a pyrrolidinyl group, a piperidinyl group, a homopiperidinyl group, a piperazinyl group, a homopiperazinyl group, an N-alkylpiperazinyl group, N-alkylhomopiperazinyl group, an N-hydroxyalkylpiperazinyl group or a pyrrolidonyl group or alternatively R 1  and R 2  form together with the nitrogen atom to which they are attached, and further a carbon atom to which said nitrogen atom is bound, a pyrrolitidinyl group; 
     A 1  and A 2  independently represent a hydrogen atom, a hydroxyl group, a halogen atom, an optionally halogenated alkyl group having 1 to 5 carbon atoms, an optionally substituted alkoxy group, an acyloxy group, a carbamyloxy group or an optionally substituted carboxyl group; and 
     B 1  and B 2  independently represent a hydrogen atom, a halogen atom, a nitro group, a cyano group, an optionally halogenated alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an optionally substituted carboxyl group; 
     or a pharmaceutically acceptable salt thereof as an active ingredient is provided. 
     The term &#34;halogen&#34; as used herein includes fluoro, chloro, bromo or iodo, and fluoro, chloro and bromo are preferred. 
     The integer represented by n is preferably 2-4 and more preferably 2 or 3. 
     Examples of the alkyl group represented by R 1  and R 2  include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl and neopentyl. Those having 1-3 carbon atoms such as methyl, ethyl, propyl and isopropyl are preferred. 
     Examples of the aralkyl group represented by R 1  and R 2  include benzyl, phenethyl, phenylpropyl, phenylbutyl, tolylmethyl, tolylethyl, tolylpropyl, pyridylmethyl and pyridylethyl. 
     When R 1  and R 2  form together with the nitrogen atom, to which they are attached, an N-alkylpiperazinyl group, Nalkyl-homopiperazinyl group or an N-hydroxyalkylpiperazinyl group, examples of the alkyl moiety include methyl, ethyl and propyl. 
     When A 1  and A 2  independently represent an optionally halogenated alkyl group, examples thereof include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, neopentyl and trifluoromethyl. Those having 1-3 carbon atoms such as methyl, ethyl, propyl and isopropyl are preferred. 
     When A 1  and A 2  independently represent an optionally substituted alkoxy group, examples of the substituent include phenyl and pyridyl. 
     When A 1  and A 2  independently represent an optionally substituted carboxyl group, examples of the substituent include methyl, ethyl, propyl, butyl, phenyl, benzyl, pyridyl and pyridylmethyl. Methyl and ethyl are preferred. 
     When B 1  and B 2  independently represent an optionally halogenated alkyl group, the alkyl group has preferably 1-5 carbon atoms. Examples of such groups include methyl, ethyl, propyl and trifluoromethyl. 
     When B 1  and B 2  independently represent an optionally substituted carboxyl group, examples of the substituent include methyl, ethyl, propyl, butyl, phenyl, benzyl, pyridyl and pyridylmethyl. Methyl and ethyl are preferred. 
     It should be understood that the compound of the present invention comprises several isomers as schematically illustrated below. Namely, there are two geometrical isomers (E-form and Z-form) at the oxime structure, and further, each of the geometrical isomers has two optical isomers. Each isomers can be separated by a conventional manner by way of, e.g. recrystallization, column chromatography, TLC, HPLC or by using a chemical substance commonly used in the separation of optical isomers. ##STR3## 
     Typical examples of disorders resulting from cerebral neuro-degeneration to be treated with the use of the therapeutic agent of the present invention are progressive idiophrenic disorders, wherein cognitive capabilities deteriorate as a result of a degenerative atrophy of neurocytes in the brain, observed in Alzheimer&#39;s disease (AD) and senile demetia of an Alzheimer&#39;s type (SDAT). 
     Some of the cyclopropachromen derivatives represented by the above general formula (I) are described in Japanese Patent Laid-Open No. 198676/1987. However, these compounds are disclosed in the aforesaid Laid-Open patent as a therapeutic agent for postapopletic sequence, an antiamnestic agent and an antidepressant mainly based on the effect of preventing hypofunction of the brain in an ischemic state, namely, as a therapeutic agent for symptomatic treatment. In contrast thereto, the therapeutic agent of the present invention is a drug for causal treatment whereby degenerated cerebral neurocytes are restored and thus normalized. Therefore, the therapeutic agent of the present invention enables the treatment of kern-neurosis such as AD and SDAT caused by neuro-degeneration in the brain, differing from the case of the aforesaid therapeutic agent described in Japanese Patent Laid-Open No. 198676/1987. 
     Among the compounds of the general formula (I), novel ones may be synthesized in the following manner in accordance with a method described in Japanese Patent Laid-Open No. 198676/1987. ##STR4## 
     Namely, the compound of the general formula (II) is reacted with hydroxylamine hydrochloride in pyridine to give the compound (III). The compound (III) is then condensed with an aminohalide represented by the following formula: ##STR5## wherein R 1 , R 2  and --(CH 2 ) n  -- are as defined above; and 
     X represents a halogen atom; to give the compound (I). Alternatively, the compound (III) is condensed with a bifunctional compound represented by the following formula: 
     
         X.sup.1 --(CH.sub.2).sub.n --X.sup.2 
    
      wherein 
     --(CH 2 ) n  -- is as defined above; 
     X 1  represents a halogen atom; and 
     X 2  represents a halogen atom or an epoxyethyl group; 
     to give the compound (IV). The compound (IV) is further reacted with an appropriate amine to give the compound (I). 
     The starting compound (II) to be used in the above synthesis is either a known compound reported by P. Bennett et al. [J. Chem. Soc., Perkin Trans., I, 2990 (1979)] or one which may be synthesized by a similar method. 
     The active ingredient of the present invention may be formulated into pharmaceutical compositions together with commonly known carriers either as such or in the form of a pharmaceutically acceptable salt, for example, an inorganic acid salt such as hydrochloride, sulfate, nitrate or phosphate, an organic acid salt such as acetate, propionate, butyrate, oxalate, malonate, succinate, maleate, fumarate, tartrate, citrate, malate, p-toluenesulfonate or methanesulfonate, or an alkali metal salt such as sodium or potassium salt when either A 1  or A 2  in the general formula (I) is a hydroxyl group. For example, the active ingredient may be formulated, optionally together with a common filler etc., into an appropriate preparation such as a capsule, tablet or injection and then orally or parenterally administered. These preparations may be obtained by, for example, the following methods. The active compound in the form of a powder is mixed with a filler such as lactose, starch or a derivative thereof or a cellulose derivative and then filled in a gelatin capsule to give a capsule. A tablet may be obtained by admixing the active compound together with an above-mentioned filler, a binder such as sodium carboxymethyl cellulose, alginic acid or gum arabic and water, optionally formulating into the kneaded mixture into granules, adding a lubricant such as talc or stearic acid thereto and then tableting the obtained mixture with a common compression tableting machine. In the case of parenteral administration by injection, the active compound is dissolved together with a dissolving aid in sterile distilled water or sterile physiological saline and then sealed in an ample to thereby give an injection preparation. The product may further contain a stabilizer or a buffer, if required. 
     The content of the active ingredient in the therapeutic agent may vary depending on the type of the disease, conditions, administration method and physical factors of the patient. In general, the content should be adjusted in such a manner as to give the active ingredient in an amount sufficient to alleviate the symptoms of the disease. For example, it may be administered to an adult in a dose of from approximately 0.1 to 1,000 mg, preferably from 1 to 500 mg, per day via oral administration, intravenous injection or application to mucosa. 
     In the following Reference Examples and Examples, the synthesis of the active ingredient compound of the present invention will be illustrated. In the Reference Examples given first, the preparation of a starting material to be used for synthesizing the active ingredient will be described. Each Reference Example is expressed in a combination of two numbers and the former number corresponds to the number of the above-mentioned general formulae (II) to (IV). [Namely, Reference Example II-1 shows the preparation of the starting material of the above-mentioned formula (II).] 
     REFERENCE EXAMPLE II-1 
     1a,7a-Dihydro-1a-phenylcyclopropa[b]chromen-7(1H)-one ##STR6## 
     Although the method for synthesizing the titled compound is described by P. Bennett et al. [J. Chem. Soc., Perkin Trans. I, 2990 (1979)], no detailed description on a practical test method is given therein. By reference to their report, we have examined reaction conditions in detail and thus synthesized the titled compound by the following method. 
     11.2 g (50 mmol) of trimethylsulfoxonium iodide was dissolved in 100 ml of dimethylsulfoxide and 2.0 g (50 mmol) of sodium hydride (60% oil-dispersion) was added thereto by portions. The mixture was stirred at room temperature until no hydrogen evolved any more. To the obtained reaction mixture, was added a dimethylsulfoxide solution in which 11.1 g (50 mmol) of flavone had been dissolved. After stirring at room temperature for 2 hours and at 50° C. for 1 hour, the reaction mixture was poured onto ice/water and then extracted with ether. The extract was washed with water, dried and concentrated. The residue thus obtained was purified by silica gel chromatography (eluent: hexane:ethyl acetate=9:1) to give 6.01 g (yield: 48%) of the titled compound. The physicochemical data of the obtained product are shown in the following Table 1. 
     The compounds of Reference Examples II-2 to II-35 were each produced in the same manner as the one described in Reference Example II-1. 
     
                                           TABLE 1                                 
__________________________________________________________________________
Reference                                                                 
Example                                                                   
      Structure                  m.p. (°C.)                        
                                       IR     NMR                         
__________________________________________________________________________
II-1                                                                      
       ##STR7##                  59.0-60.0                                
                                       3050 1670 1605 1460 1320 1220 1025 
                                        750                               
                                           2900 1640 1575 1380 1235 1130  
                                           60 690                         
                                              1.73(t, 1H, J=6.6Hz)        
                                              2.06(dd, 1H, J=6.6Hz &amp;      
                                              10.2Hz) 2.55(dd, 1H,        
                                              J=6.6Hz &amp; 10.2Hz) 7.03      
                                              -7.95(m, 9H)                
II-2                                                                      
       ##STR8##                  115-118                                  
                                       3000 1618 1300 1200  990 720       
                                           1670 1440 1260 1150  848       
                                              1.71(t, 1H, J=6.6Hz)        
                                              2.07(dd, 1H, J=6.6Hz) &amp;     
                                              10.6Hz) 2.52(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.6Hz) 6.7-6.85(m,         
                                              2H)7.3-7.5(m, 5H) 7.96(dd,  
                                              1H, J=6.6Hz &amp; 8.6Hz)        
II-3                                                                      
       ##STR9##                  102.0-103.5                              
                                       3400 1670 1420 1220  975 860       
                                           3050 1600 1300 1065  900 810   
                                           690                            
                                              1.73(dd, 1H, J=6.3Hz &amp;      
                                              6.9Hz) 2.07(dd, 1H, J=6.9Hz 
                                              &amp; 10.9Hz) 2.52(dd, 1H,      
                                              J=6.3Hz &amp;                   
                                              10.9Hz) 7.00-7.60(m, 7H)    
                                              7.87(d, 1H, J=8.2Hz)        
II-4                                                                      
       ##STR10##                 95-96 3000 1595 1298  962 720            
                                           1670 1418 1202                 
                                              1.73(t, 1H, J=6.6Hz)        
                                              2.07(dd, 1H, J=6.6Hz &amp;      
                                              10.9Hz) 2.53(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.9Hz) 7.2-7.5(m, 7H)      
                                              7.80(d, 1H, J=8.6Hz)        
II-5                                                                      
       ##STR11##                 115.0-116.5                              
                                       3050 1650 1570 1440 1160  830      
                                           2990 1600 1490 1260 1080       
                                              1.67(t, 1H, J=6.3Hz),       
                                              1.99(dd, 1H, J=6.3Hz &amp;      
                                              10.9Hz), 2.46(dd, 1H,       
                                              J=6.3Hz &amp; 10.9Hz), 3.83(s,  
                                              3H), 6.49(d, 1H, J=2.7Hz),  
                                              6.65(dd, 1H, J=2.7Hz &amp;      
                                              8.9Hz) 7.26-7.48(m, 5H)     
                                              7.87(d, 1H, J=8.9Hz)        
II-6                                                                      
       ##STR12##                 123.0-124.5                              
                                       3060 2940 1620 1440 1310 1180      
                                           3030 1670 1580 1390 1260       
                                              1.68(t, 1H, J=6.9Hz)        
                                              2.01(dd, 1H, J=6.9Hz &amp;      
                                              11.6Hz) 2.46(dd, 1H,        
                                              J=6.9Hz &amp; 11.6Hz) 5.08(s,   
                                              2H) 6.55-7.88(m, 13H)       
II-7                                                                      
       ##STR13##                 115-120                                  
                                       2990 1640 1565 1420 1280 1168 1100 
                                        955 860 680                       
                                           1670 1598 1462 1345  1210 1128 
                                            985 912 815                   
                                              1.74(t, 1H, J=6.6Hz)        
                                              2.08(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.54(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) mx,1      
                                              7.02(d, 1H, J=8.6Hz)        
                                              7.3-7.5(m, 6H) 7.90(d, 1H,  
                                              J=2.6Hz)                    
II-8                                                                      
       ##STR14##                 103-105                                  
                                       3020 2830 1610 1430 1345 1205 1030 
                                        865 750                           
                                           2930 1660 1480 1380 1290 1080  
                                           70 835 690                     
                                              1.70(t, 1H, J=6.6Hz),       
                                              2.04(dd, 1H, J=6.6Hz &amp;      
                                              9.9Hz), 2.52(dd, 1H,        
                                              J=6.6Hz &amp; 9.9Hz) 3.82(s,    
                                              3H) 6.98-7.48(m, 8H)        
II-9                                                                      
       ##STR15##                 oil   3000 2830 1600 1470 1325 1230 1025 
                                        875 750                           
                                           2930 1660 1570 1380 1260 1090  
                                            980 795 690                   
                                              1.84(t, 1H, J=7.3Hz)        
                                              1.98(dd, 1H, J=7.3Hz &amp;      
                                              9.9Hz) 2.58(dd, 1H, J=7.3Hz 
                                              &amp; 9.9Hz) 3.92(s, 3H),       
                                              6.57-6.68(m,                
                                              2H) 7.35-7.48(m, 6H)        
II-10                                                                     
       ##STR16##                 105-112                                  
                                       2920 1625 1498 1420 1280 1120      
                                           1670 1595 1440 1350 1260 1080  
                                           80 1.73(t, 1H, J=6.6Hz)        
                                              2.00-2.08(m, 1H) 2.50(dd,   
                                              1H, J=6.6Hz &amp; 10.9Hz)       
                                              3.90(s, 3H), 3.94(s, 3H)    
                                              6.71(d, 1H, J=8.6Hz) 7.3-   
                                              7.5(m, 5H) 7.71(d, 1H,      
                                              J=8.6Hz)                    
II-11                                                                     
       ##STR17##                 108-115                                  
                                       1675 1550 1405 1220  975 890       
                                           1598 1445 1260 1120  940 855   
                                           680                            
                                              1.54(t, 1H, J=6.6Hz)        
                                              2.10(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.53(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 7.21(s,   
                                              1H), 7.3-7.5(m, 5H) 8.00(s, 
                                              1H)                         
II-12                                                                     
       ##STR18##                 146-149                                  
                                       3000 1665 1500 1455 1380 1200 1080 
                                       000 2940 1610 1470 1420 1280 1165  
                                           1030  960 755                  
                                              1.66(t, 1H, J=6.6Hz)        
                                              2.01(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2. 47(dd, 1H,       
                                              J=6.6Hz &amp; 10.6Hz) 3.90(s,   
                                              3H), 3.71(s, 3H) 6.52(s,    
                                              1H) 7.31-7.49(m, 6H)        
II-13                                                                     
       ##STR19##                 124-125                                  
                                       1660 1500 1370 1200 1000  820      
                                           1610 1445 1270 1080   865 760  
                                           695                            
                                              1.64(t, 1H, J=6.6Hz)        
                                              1.99(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.44(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 5.15(s,   
                                              2H), 5.18(s, 2H) 6.56(s,    
                                              1H) 7.28-7.49(m, 16H)       
II-14                                                                     
       ##STR20##                 80-83 2900 1600 1380 1280 1230 1090  955 
                                       45  1670 1460 1315 1250 1120 1010  
                                           80 1.63(t, 1H, J=6.6Hz)        
                                              1.97(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.41(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.81(s,   
                                              3H), 6.94-7.51(m, 7H)       
                                              7.94(dd, 1H, J=2.0Hz &amp;      
                                              7.2Hz)                      
II-15                                                                     
       ##STR21##                 51-56 3050 1675 1580 1385 1230 1100  960 
                                       80  2940 1610 1465 1320 1130 1025  
                                           00 755                         
                                              1.69(t, 1H, J=6.6Hz)        
                                              2.00(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 2.43(s, 3H)         
                                              2.47(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 6.94-7.52(m, 7H)    
                                              7.95(dd, 1H, J=2.0Hz &amp;      
                                              7.9Hz)                      
II-16                                                                     
       ##STR22##                 oil   3050 1600 1460 1375 1255 1125 1015 
                                        885                               
                                           1675 1570 1435 1320 1150 1080  
                                           65 855                         
                                              1.77(t, 1H, J=7.3Hz)        
                                              2.04(dd, 1H, J=7.3Hz &amp;      
                                              10.5Hz) 2.53(dd, 1H,        
                                              J=7.3Hz &amp;                   
                                              10.5Hz) 7.06-7.57(m, 7H)    
                                              7.93(dd, 1H, J=1.3Hz &amp;      
                                              7.9Hz)                      
II-17                                                                     
       ##STR23##                  96-100                                  
                                       2950 1640 1580 1460 1320 1220 1125 
                                        850 755                           
                                           1670 1600 1480 1430 1260 1155  
                                           1035  780                      
                                              1.72(t, 1H, J=7.0Hz)        
                                              2.03(dd, 1H, J=7.0Hz &amp;      
                                              10.8Hz) 2.53(dd, 1H,        
                                              J=7.0Hz &amp; 10.8Hz) 3.82(s,   
                                              3H), 6.87-7.53(m, 7H)       
                                              7.92(dd, 1H, J=2.0Hz &amp;      
                                              7.9Hz)                      
II-18                                                                     
       ##STR24##                 72-76 3000 1680 1600 1480 1345 1255 1200 
                                       020 2900 1630 1575 1440 1280 1240  
                                           1150  980 780 680              
                                              1.72(t, 1H, J=6.2Hz)        
                                              2.05(dd, 1H, J=6.2Hz &amp;      
                                              10.8Hz) 2.40(s, 3H)         
                                              2.52(dd, 1H, J=6.2Hz &amp;      
                                              10.8Hz) 7.04-7.54(m, 7H)    
                                              7.93(dd, 1H, J=1.3Hz &amp;      
                                              7.9Hz)                      
II-19                                                                     
       ##STR25##                 54-57 3000 1675 1500 1370 1225 1090  965 
                                       10 710                             
                                           2900 1600 1460 1315 1145 1010  
                                           30 755                         
                                              1.75(t, 1H, J=6.6Hz)        
                                              2.02(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 2.51(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              11.2Hz) 7.03-7.56(m, 7H)    
                                              7.93(dd, 1H, J=2.0Hz &amp;      
                                              7.9Hz)                      
II-20                                                                     
       ##STR26##                  99-104                                  
                                       2920 1670 1515 1380 1250 1175 1020 
                                        820                               
                                           2820 1600 1460 1320 1230 1125  
                                           60 750                         
                                              1.69(t, 1H, J=6.6Hz)        
                                              2.02(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.49(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.84(s,   
                                              3H) 6.93-7.53(m, 7H)        
                                              7.93(dd, 1H, J=2.0Hz &amp;      
                                              7.9Hz)                      
II-21                                                                     
       ##STR27##                 73-75 3010 1670 1460 1320 1125 1020      
                                           2900 1605 1380 1230 1100  960  
                                           750                            
                                              1.71(t, 1H, J=6.6Hz)        
                                              2.03(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.38(s, 3H)         
                                              2.50(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 7.02-7.53(m, 7H)    
                                              7.93(dd, 1H, J=2.0Hz &amp;      
                                              7.9Hz)                      
II-22                                                                     
       ##STR28##                 145-148                                  
                                       2950 1600 1460 1230 1110 1010  825 
                                       80  1675 1575 1320 1160 1065  970  
                                           755                            
                                              1.83(t, 1H, J=6.6Hz)        
                                              2.07(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 2.58(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              11.2Hz) 7.07-7.71(m, 7H)    
                                              7.94(dd, 1H, J=1.3Hz &amp;      
                                              7.6Hz)                      
II-23                                                                     
       ##STR29##                 88-90 2900 1665 1460 1310 1220 1100  965 
                                       60  1715 1600 1425 1280 1175 1000  
                                           30 740                         
                                              1.82(t, 1H, J=6.6Hz)        
                                              2.10(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 2.59(dd, 1H,        
                                              J=6.6Hz &amp; 11.2Hz) 3.94(s,   
                                              3H) 7.08-8.11(m, 8 H)       
II-24                                                                     
       ##STR30##                 100-102                                  
                                       2220 1605 1378 1210 1100  965      
                                           1670 1460 1320 1122 1050       
                                              1.86(t, 1H, J=6.6Hz)        
                                              2.07(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 2.59(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              11.2Hz) 7.05-7.2(m, 2H),    
                                              7.5-7.6(m, 3H), 7.73(d, 2H, 
                                              J=8.6Hz) 7.94(dd, 1H,       
                                              J=2.0Hz &amp; 7.6Hz)            
II-25                                                                     
       ##STR31##                 157-160                                  
                                       3400 1610 1470 1320 1100  860      
                                           1675 1515 1350 1130  975 840   
                                           750                            
                                              1.90(dd, 1H, J=6.6Hz &amp;      
                                              7.3Hz) 2.12(dd, 1H,         
                                              J=10.6Hz &amp; 7.3Hz) 2.63(dd,  
                                              1H, J=6.6Hz &amp; 10.6Hz)       
                                              7.14(m, 2H)7.5-7.6(m, 1H)   
                                              7.61(d, 2H, J=9.2H)         
                                              7.95(dd, 1H, J=1.3Hz &amp;      
                                              7.3Hz) 8.29(d, 2H, J=9.2H)  
II-26                                                                     
       ##STR32##                 101-103                                  
                                       1665 1460 1318 1120  960           
                                           1600 1368 1190 1020            
                                              1.78(t, 1H, J=6.6Hz)        
                                              2.02(dd, 1H, J=6.6Hz &amp;      
                                              10.9Hz) 2.52(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.9Hz) 7.05-7.15(m,        
                                              2H)7.2-7.3(m,               
                                              1H) 7.45-7.6(m, 3H)         
                                              7.93(dd, 1H, J=1.3Hz &amp;      
                                              7.9Hz)                      
II-27                                                                     
       ##STR33##                 107-110                                  
                                       2850 1630 1500 1405 1260 1120      
                                           1680 1575 1440 1330 1140       
                                              1.70(t, 1H, J=6.6Hz)        
                                              2.03(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 2.50(dd, 1H,        
                                              J=6.6Hz &amp; 11.2Hz) 3.91(s,   
                                              3H), 3.92(s,                
                                              3H) 6.88-7.54(m, 6H)        
                                              7.94(dd, 1H, J=2.0Hz &amp;      
                                              7.9Hz)                      
II-28                                                                     
       ##STR34##                 121- 122                                 
                                       3090 1600 1495 1300 1095 1010      
                                           1675 1565 1425 1220 1070       
                                              1.74(t, 1H, J=6.6Hz)        
                                              2.04(dd, 1H, J=6.6Hz &amp;      
                                              11.2Hz) 2.50(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              11.2Hz) 7.05-7.15(m,        
                                              2H)7.3-7.5(m,               
                                              4H) 7.83-7.95(m, 1H)        
II-29                                                                     
       ##STR35##                 176-178                                  
                                       3080 1680 1510 1340 1220 1090  900 
                                       50  3050 1600 1420 1290 1135  980  
                                           840                            
                                              1.87(dd, 1H, J=6.7Hz &amp;      
                                              7.4Hz) 2.13(dd, 1H, J=7.4Hz 
                                              &amp; 11.2Hz) 2.62(dd, 1H,      
                                              J=6.7Hz &amp; 11.2Hz) 7.09(dd,  
                                              1H, J=2.2Hz &amp; 8.2Hz)        
                                              7.13(d, 1H, J=2.2Hz)        
                                              7.57(d, 2H, J=8.9Hz)        
                                              7.87(d, 1H, J=8.2Hz)        
                                              8.28(d, 2H, J=8.9Hz)        
II-30                                                                     
       ##STR36##                 77-82  3090 1620 1440 1300 1230 1125     
                                       995 830 750                        
                                           1670 1515 1375 1260 1150 1100  
                                           50 810                         
                                              1.73(t, 1H, J=6.6Hz)        
                                              2.03(dd, 1H, J=6.6Hz &amp;      
                                              10.7Hz) 2.49(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.7Hz) 6.70-6.85(m, 2H)    
                                              7.09-7.48(m, 4H) 7.96(dd,   
                                              1H, J=6.6Hz &amp; 9.2Hz)        
II-31                                                                     
       ##STR37##                 136-138                                  
                                       1665 1515 1310 1140  980 835       
                                           1605 1425 1220 1095  910       
                                              1.72(t, 1H, 6.6Hz) 2.03(dd, 
                                              1H, J=6.6 &amp; 10.6Hz)         
                                              2.49(dd, 1H, J=6.6 &amp;        
                                              10.6Hz) 7.1(m, 4H) 7.4(m,   
                                              2H) 7.87(d, 1H, J=9.2Hz)    
II-32                                                                     
       ##STR38##                 125-127                                  
                                       1675 1565 1425 1225 1000   905     
                                           1605 1495 1300 1095  980 865   
                                           770                            
                                              1.74(t, 1H, J=6.6Hz)        
                                              2.03(dd, 1H, J=6.6 &amp;        
                                              11.2Hz) 2.49(dd, 1H, J=6.6  
                                              &amp; 11.2Hz) 7.06(m, 2H)       
                                              7.31(d, 2H, J=8.6Hz)        
                                              7.56(d, 2H, J=8.6Hz)        
                                              7.87(d, 1H, J=8.6Hz)        
II-33                                                                     
       ##STR39##                 129-131                                  
                                       1670 1520 1305 1225  975 830       
                                           1595 1420 1235 1165  905       
                                              1.72(dd, 1H, J=6.6 &amp; 7.3Hz) 
                                              .03(dd, 1H, J=7.3 &amp; 11.2Hz) 
                                              .49(dd, 1H, J=6.6 &amp; 11.2Hz) 
                                              .1(m, 2H) 7.2(m, 2H) 7.4(m, 
                                              2H) 7.79(d, 1H, J=8. 6Hz)   
II-34                                                                     
       ##STR40##                 144-146                                  
                                       1670 1500 1300 1095  975 865       
                                           1595 1420  1220 1010  900      
                                              1.74(dd, 1H, J=6.6 &amp; 7.3Hz) 
                                              .03(dd, 1H, J=7.3 &amp; 11.2Hz) 
                                              .50(dd, 1H, J=6.6 &amp; 11.2Hz) 
                                              .2(m, 2H) 7.4(m, 4H)        
                                              7.79(d, 1H, J=7.9Hz)        
II-35                                                                     
       ##STR41##                 153-154                                  
                                       1670 1495 1300 1090  975 810       
                                           1595 1420 1220 1010  900       
                                              1.74(dd, 1H, J=6.6 &amp; 7.3Hz) 
                                              .03(dd, 1H, J=7.3 &amp; 11.2Hz) 
                                              .50(dd, 1H, J=6.6 &amp; 11.2Hz) 
                                              .2(m, 4H) 7.56(d, 2H,       
                                              J=8.6Hz) 7.79(d, 1H,        
                                              J=8.6Hz)                    
__________________________________________________________________________
 
    
     REFERENCE EXAMPLE III-1 
     1a, 7a-Dihydro-7(1H)-hydroxyimino-1a-phenylcyclopropa[b]chromen ##STR42## 
     2.36 g (10 mmol) of the compound of Reference Example II-1 was dissolved in 80 ml of pyridine. 2.78 g (40 mmol) of hydroxylamine hydrochloride was added thereto and the obtained mixture was stirred at 55° C. for 2 hours. The reaction mixture was concentrated, diluted with water and then extracted with chloroform. The extract was washed with water, dried and concentrated. The residue thus obtained was purified by silica gel chromatography (eluent: hexane:ethyl acetate=9:1) to give 2.31 g (yield: 92.1%) of the titled compound. The physicochemical data of this product are shown in the following Table 2. Table 2 further shows the compounds of Reference Examples III-2 to III-35 which were produced by reacting the compounds of Reference Examples II with hydroxylamine hydrochloride followed by the treatment as the aforesaid manner. 
     
                                           TABLE 2                                 
__________________________________________________________________________
Reference                                                                 
Example                                                                   
      Structure                  m.p. (°C.)                        
                                       IR     NMR                         
__________________________________________________________________________
III-1                                                                     
       ##STR43##                 114-115                                  
                                       3250 2930 1600 1480 1380 1300 1220 
                                       035  915  735                      
                                          3050 1660 1565 1450 1330 1250   
                                          1105  975  880  690             
                                              1.65(t, 1H, J=6.6Hz)        
                                              1.93(dd, 1H, J=6.6Hz &amp;      
                                              10.2Hz) 3.13(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.2Hz) 6.96-7.79(m,        
                                              9H)8.62(s, 1H)              
III-2                                                                     
       ##STR44##                 141-143                                  
                                       3550 1608 1430 1200  998  715      
                                          3010 1500 1260 1148  848        
                                              1.63(t, 1H, J=6.6Hz)        
                                              1.94(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.11(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.6Hz) 6.65-6.76(m,        
                                              2H)7.3- 7.5(m,              
                                              5H) 7.7-7.8(m, 1H)          
III-3                                                                     
       ##STR45##                 153-155                                  
                                       3200 3050 1600 1475 1410 1220 1010 
                                        900  790  680                     
                                          3150 1640 1560 1440 1305 1070   
                                          980 1.61(dd, 1H, J=8.6Hz &amp;      
                                              10.6Hz) 1.94(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.11(dd,  
                                              1H, J=8.6Hz &amp; 6.6Hz)        
                                              6.96(dd, 1H, J=2.3Hz &amp;      
                                              8.6Hz) 7.02(d, 1H, J=2.3Hz) 
                                              .28-7.50(m, 5H) 7.70(d, 1H, 
                                              J=8.6Hz)7.99(br.s, 1H)      
III-4                                                                     
       ##STR46##                 164-166                                  
                                       3200 1598 1480 1305  980           
                                          1640 1560 1410 1218  920        
                                              1.61(t, 1H, J=6.6Hz)        
                                              1.93(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.09(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 7.10(m,   
                                              1H)7.12-7.13(m, 1H)         
                                              7.25-7.5(m, 5H) 7.65(d, 1H, 
                                              J=8.6Hz)                    
III-5                                                                     
       ##STR47##                 oil   3200 2820 1565 1435 1380 1160 1020 
                                        905  745                          
                                          3050 1615 1500 1420 1260 1085   
                                          990 1.62(t, 1H, J=6.6Hz)        
                                              1.91(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.09(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.80(s,   
                                              3H)6.49- 7.70 (m, 8H)       
                                              8.62(m, 1H)                 
III-6                                                                     
       ##STR48##                 52-56 3400 1610 1450 1380 1235 1140 1020 
                                        830  695                          
                                          3050 1500 1430 1260 1165 1090   
                                          910 1.62(t, 1H, J=6.9Hz)        
                                              1.91(dd, 1H, J=6.9Hz &amp;      
                                              11.1Hz) 3.07(dd, 1H,        
                                              J=6.9Hz &amp; 11.1Hz) 5.04(s,   
                                              2H)6.57-7.72(m, 13H)        
III-7                                                                     
       ##STR49##                 161.5-163                                
                                       3250 1620 1465 1278 1065  970  870 
                                        685                               
                                           1592 1420 1102 1010  915       
                                              1.62(t, 1H, J=6.6Hz)        
                                              1.93(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.10(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 6.93(d,   
                                              1H, J=9.2Hz)7.2-7.6(m, 6H)  
                                              7.76(d, 1H, J= 2.6Hz)       
III-8                                                                     
       ##STR50##                 142-145                                  
                                       3200 1635 1490 1450 1300 1180 1080 
                                        980  860  760                     
                                          3000 1605 1465 1435 1215 1120   
                                          1030  945  835  695             
                                              1.61(t, 1H, J=6.6Hz)        
                                              1.90(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.09(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.80(s,   
                                              3H)6.93-7.50(m, 8H)         
III-9                                                                     
       ##STR51##                 213-217                                  
                                       3150 1565 1430 1285 1230 1010  935 
                                        890  745                          
                                          1590 1460 1320 1260 1090  985   
                                          910 1.66(t, 1H, J=6.6Hz)        
                                              1.85(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.36(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.91(s,   
                                              3H) 6.57-6.66(m,            
                                              2H)7.20-7.50(m, 6H)         
III-10                                                                    
       ##STR52##                 152-153                                  
                                       3200 1640 1495 1422 1335 1255 1140 
                                       090  960  825  715                 
                                          2910 1600 1450 1375 1280 1220   
                                          1105 1015  855  750             
                                              1.66(t, 1H, J=6.6Hz)        
                                              1.92(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.14(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.89(s,   
                                              6H)6.62(d, 1H, J=8.6Hz)     
                                              7.25-7.55(m, 5H)7.77(m,     
                                              1H)                         
III-11                                                                    
       ##STR53##                 136.5-137.5                              
                                       1625 1200                          
                                          1405                            
                                              1.60(t, 1H, J=6.6Hz)        
                                              1.94(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.08(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 7.13(s,   
                                              1H)7.25-7.5(m, 5H) 7.87(s,  
                                              1H)                         
III-12                                                                    
       ##STR54##                 194-195                                  
                                       3200 1615 1440 1380 1255 1160 1035 
                                        900  765                          
                                          2820 1505 1420 1305 1210 1080   
                                          1010  840  690                  
                                              1.60(t, 1H, J=6.6Hz)        
                                              2.13(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.92(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz)  3.89(s,  
                                              3H), 3.92(s, 3H) 6.56(s,    
                                              1H)7.27-7.58(m, 6H)         
III-13                                                                    
       ##STR55##                 160-161                                  
                                       3100  1610 1440 1300 1200 1080     
                                       1000  900  750                     
                                          2850 1500 1375 1250 1170 1040   
                                          930 1.62(t, 1H, J=6.6Hz)        
                                              2.08(dd, 1H, J=6.6Hz &amp;      
                                              10.5Hz) 2.90(dd, 1H, J=     
                                              6.6Hz &amp; 10.5Hz) 5.06(s,     
                                              2H), 5.12(s, 2H) 6.57(s,    
                                              1H)7.22-7.54(m, 16H)        
III-14                                                                    
       ##STR56##                 222-224                                  
                                       3150 1635 1575 1460 1330 1225 1020 
                                        920  755                          
                                          2900 1600 1485 1380 1280 1125   
                                          975 1.52(t, 1H, J=6.6Hz)        
                                              1.84(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.99(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.82(s,   
                                              3H)  6.80-7.50(m, 7H)       
                                              7.58(br.s, 1H) 7.79(d, 1H,  
                                              J=7.3Hz)                    
III-15                                                                    
       ##STR57##                 179-183                                  
                                       3200 1605 1480 1380 1320 1130  975 
                                        900  740                          
                                          1630 1570 1455 1335 1220 1020   
                                          920 1.58(t, 1H, J=6.6Hz)        
                                              1.87(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.38(s, 3H)         
                                              3.07(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz)  6.86-7.47(m, 7H)   
                                              7.55(br.s, 1H) 7.79(dd, 1H, 
                                              J=2.0Hz &amp; 7.3Hz)            
III-16                                                                    
       ##STR58##                 oil   3100 1595 1470 1370 1250 1120 1020 
                                        900  820                          
                                          1620 1560 1410 1310 1220 1070   
                                          970 1.66(dd, 1H, J=6.6Hz &amp;      
                                              7.3Hz) 1.89(dd, 1H, J=7.3Hz 
                                              &amp; 10.6Hz) 3.11(dd, 1H,      
                                              J=6.6Hz &amp; 10.6Hz) 6.78-     
                                              7.50(m, 7H) 7.78(dd, 1H,    
                                              J=2.0Hz &amp; 6.6Hz)            
III-17                                                                    
       ##STR59##                 oil   3200 1600 1480 1430 1230 1045  980 
                                        840  740                          
                                          2900 1580 1450 1375 1125 1030   
                                          905 1.64(t, 1H, J=6.6Hz)        
                                              1.92(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.17(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.83(s,   
                                              3H) 6.85-7.36(m, 7H)        
                                              7.77(d, 1H, J=7.9Hz)        
III-18                                                                    
       ##STR60##                 oil   3250 2900 1605 1455 1325 1255 1185 
                                        980  850                          
                                          3040 1625 1480 1380 1310 1230   
                                          1125  910  760                  
                                              1.63(t, 1H, J=6.6Hz)        
                                              1.94(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 2.39(s, 3H)         
                                              3.14(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz)  6.76-7.36(m, 7H)   
                                              7.76(d, 1H, J=7.9Hz)        
III-19                                                                    
       ##STR61##                 175-177                                  
                                       3200 1635 1570 1385 1305 1125  980 
                                        890  760                          
                                          2890 1595 1450 1330 1220 1085   
                                          920 1.66(t, 1H, J=6.6Hz)        
                                              1.88(dd, 1H, J=6.6Hz &amp;      
                                              10.5Hz) 3.11(dd, 1H,        
                                              J=6.6Hz &amp; 10.5Hz) 6.97-     
                                              7.40(m, 7H) 7.76(dd, 1H,    
                                              J=1.3Hz &amp; 7.9Hz)            
III-20                                                                    
       ##STR62##                 186-190                                  
                                       2920 1510 1300 1170 1020  910      
                                          1600 1445 1245 1125  970  810   
                                          740 1.59(t, 1H, J=6.6Hz)        
                                              1.86(dd, 1H, J=6.6Hz &amp;      
                                              10.5Hz) 3.07(dd, 1H,        
                                              J=6.6Hz &amp; 10.5Hz) 3.83(s,   
                                              3H) 6.92-7.44(m, 7H)        
                                              7.77(dd, 1H, J= 1.3Hz &amp;     
                                              7.9Hz)                      
III-21                                                                    
       ##STR63##                 167-169                                  
                                       3150 1635 1570 1370 1300 1220 1105 
                                        975  755                          
                                          2900 1600 1450 1330 1250 1120   
                                          1020  800  725                  
                                              1.61(t, 1H, J=6.6Hz)        
                                              1.89(dd, 1H, J=6.6Hz &amp;      
                                              9.9Hz) 2.37(s, 3H) 3.09(dd, 
                                              1H, J=6.6Hz &amp; 9.9Hz)        
                                              6.96-7.39(m, 7H) 7.77(dd,   
                                              1H, J=1.3Hz &amp; 8.3Hz)        
III-22                                                                    
       ##STR64##                 155-158                                  
                                       3240 1620 1570 1320 1160 1065  900 
                                        760                               
                                          3030 1600 1455 1230 1120 1010   
                                          825 1.73(dd, 1H, J=6.6Hz &amp;      
                                              7.3Hz) 1.94(dd, 1H, J=7.3Hz 
                                              &amp; 10.6Hz) 3.21(dd, 1H,      
                                              J=6.6Hz &amp;                   
                                              10.6Hz) 6.98-7.67(m, 7H)    
                                              7.76(dd, 1H, J=2.0Hz &amp;      
                                              7.2Hz) 9.26(br.s, 1H)       
III-23                                                                    
       ##STR65##                 oil   3350 2940 1610 1435 1280 1180 1010 
                                        840  735                          
                                          3050 1720 1455 1310 1230 1110   
                                          900 1.71(t, 1H, J=6.6Hz)        
                                              1.94(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.22(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.92(s,   
                                              3H)  6.96-8.08(m, 8H)       
                                              9.80(br.s, 1H)              
III-24                                                                    
       ##STR66##                 184-187                                  
                                       2210 1605 1370 1210 1005  900      
                                          1620 1455 1305 1100  970        
                                              1.76(t, 1H, J=6.6Hz)        
                                              1.94(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.17(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.6Hz) 6.95-7.1(m,         
                                              2H)7.3-7.45(m, 1H) 7.56(d,  
                                              2H, J=8.6Hz) 7.70(d, 2H,    
                                              J=8.6Hz) 7.78(dd, 1H, J=    
                                              1.4Hz &amp; 8.6Hz)              
III-25                                                                    
       ##STR67##                 182-185                                  
                                       3250 1580 1460  1320 1235  980     
                                       850                                
                                          1605 1520 1355 1255 1105  970   
                                          745 1.80(dd, 1H, J=6.6Hz &amp;      
                                              7.3Hz) 1.99(dd, 1H,         
                                              J=10.6Hz &amp; 7.3Hz) 3.23(dd,  
                                              1H, J=6.6Hz &amp; 10.6Hz)       
                                              7.03(m, 2H), 7.35(m, 1H)    
                                              7.61(d, 2H, J=8.6Hz)        
                                              7.78(dd, 1H, J=1.3Hz &amp;      
                                              7.9Hz) 8.04(s, 1H), 8.27(d, 
                                              2H, J=8.6Hz)                
III-26                                                                    
       ##STR68##                 119-120                                  
                                       1625 1375 1220 1105  978           
                                          1460 1310 1125 1022  900        
                                              1.68(t, 1H, J=6.6Hz)        
                                              1.88(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.11(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.6Hz) 6.95-7.05(m, 2H)    
                                              7.2-7.4(m, 2H)7.4-7.5(m,    
                                              1H) 7.59(d, 1H, J=2.0Hz)    
                                              7.79(dd, 1H, J=2.0Hz &amp;      
                                              8.2Hz)                      
III-27                                                                    
       ##STR69##                 154-156                                  
                                        3430 2840 1605 1460 1380 1260     
                                       1175 1025  910                     
                                          2950 1630 1515 1415 1320 1235   
                                          1140  980  760                  
                                              1.60(t, 1H, J=6.6Hz)        
                                              1.91(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.08(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 3.90(s,   
                                              3H), 3.92(s,                
                                              3H) 6.87-7.33(m, 6H)        
                                              7.79(dd, 1H, J=1.3Hz &amp;      
                                              7.9Hz)                      
III-28                                                                    
       ##STR70##                 178-181                                  
                                       3220 1600 1480 1305 1090  980      
                                          1640 1562 1410 1215 1070        
                                              1.63(t, 1H, J=6.6Hz)        
                                              1.90(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.08(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.6Hz) 6.95-7.05(m, 2H),   
                                              7.38(s, 4H) 7.71(d, 1H,     
                                              J=8.6Hz)                    
III-29                                                                    
       ##STR71##                 173-174                                  
                                       3200 1560  1410 1230 1030  920     
                                       740                                
                                          1600 1510 1340 1095  990        
                                              1.77(t, 1H, J=6.7Hz)        
                                              1.99(dd, 1H, J=6.7Hz &amp;      
                                              11.0Hz) 3.19(dd, 1H,        
                                              J=6.7Hz &amp; 11.0Hz) 6.99(dd,  
                                              1H, J=1.8Hz &amp; 9.1Hz)        
                                              7.07(d, 1H, J= 1.8Hz)       
                                              7.57(d, 2H, J=9.1Hz)        
                                              7.72(d, 1H, J=9.1Hz)        
                                              8.27(d, 2H, J=9.1Hz)        
III-30                                                                    
       ##STR72##                 85-90 3260 1610 1505 1265 1150 1090      
                                          2900 1515 1430 1230 1125 1000   
                                          810 1.62(t, 1H, J=6.6Hz)        
                                              1.89(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.10(dd, 1H,        
                                              J=6.6Hz &amp;                   
                                              10.6Hz) 6.66˜6.76(m,  
                                              2H) 7.06˜7.48(m, 4H)  
                                              7.75(dd, 1H, J=6.6Hz &amp;      
                                              8.6Hz)  8.57(br.s, 1H)      
III-31                                                                    
       ##STR73##                   152-153.5                              
                                       3250 1565 1485 1220  930           
                                          1605 1520  1415  995  835       
                                              1.61(dd, 1H, J=6.6Hz &amp;      
                                              7.3Hz) 1.89(dd, 1H, J=7.3Hz 
                                              &amp; 10.6Hz) 3.08(dd, 1H,      
                                              J=6.6Hz &amp; 10.6Hz) 7.0(m,    
                                              2H) 7.1(m, 2H) 7.4(m, 2H)   
                                              7.70(d, 1H, J=7.9Hz)        
III-32                                                                    
       ##STR74##                 208-211                                  
                                       3300 1570 1415 1100 1010  925      
                                          1605 1485 1225 1075  985        
                                              1.63(dd, 1H, J=6.6Hz &amp;      
                                              7.3Hz) 1.90(dd, 1H, J=7.3Hz 
                                              &amp; 10.6Hz) 3.08(dd, 1H,      
                                              J=6.6Hz &amp; 10.6Hz) 7.0(m,    
                                              2H) 7.32(d, 2H, J=8.6Hz)    
                                              7.53(d, 2H, J= 8.6Hz)       
                                              7.70(d, 1H, J=7.9Hz)        
III-33                                                                    
       ##STR75##                 130-133                                  
                                       3265 1515 1225   915               
                                          1600 1415  985  830             
                                              1.61(t, 1H, J=6.6Hz)        
                                              1.89(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.07(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 7.1(m,    
                                              4H) 7.4(m, 2H) 7.64(d, 1H,  
                                              J=8.6Hz)                    
III-34                                                                    
       ##STR76##                 202-204                                  
                                       3295 1570 1410 1100  985           
                                          1600 1480 1225 1015  920        
                                              1.63(t, 1H, J=6.6Hz)        
                                              1.90(dd, 1H, J=6.6Hz &amp;      
                                              10.6Hz) 3.08(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz) 7.1(m,    
                                              2H) 7.38(s, 4H) 7.64(d, 1H, 
                                              J=8.6Hz)                    
III-35                                                                    
       ##STR77##                 208-213                                  
                                       3265 1570 1415 1010  920           
                                          1600 1480 1225  985  820        
                                              1.62(t, 1H, J=6.6Hz)        
                                              1.89(dd, 1H, J=7.3Hz &amp;      
                                              10.6Hz) 3.08(dd, 1H,        
                                              J=6.6Hz &amp; 10.6Hz)  7.1(m,   
                                              2H) 7.31(d, 2H, J=8.6Hz)    
                                              7.53(d, 2H, J=8.6Hz)        
                                              7.64(d, 1H,                 
__________________________________________________________________________
                                              J=8.6Hz)                    
 
    
     REFERENCE EXAMPLE IV-1 
     7(1H)-(2-Bromoethyloxyimino)-1a,7a-dihydro-1a-phenylcyclopropa[b]chromen ##STR78## 
     700 mg of the compound of Reference Example III-1 was dissolved in 60 ml of tetrahydrofuran and 223 mg (2 equivalents) of sodium hydride (60% oil-dispersion) was added thereto. After refluxing for 1 hour, 3.14 g (6 equivalents) of ethylene dibromide was added thereto and the mixture was refluxed for 5 hours. The reaction mixture was concentrated and ice/water was added thereto followed by extracting with ether. The extract was washed with water, dried and concentrated. The residue thus obtained was purified by silica gel column chromatography (eluent: hexane:ethyl acetate=95:5) to give 911 mg (yield: 91.3%) of the titled compound. The physicochemical data of the obtained product are shown in the following Table 3. 
     REFERENCE EXAMPLE IV-2 
     7(1H)-(2-Chloroethyloxyimino)-1a,7a-dihydro-1a-phenylcyclopropa[b]chromen ##STR79## 
     1.5 g of the compound of Reference Example III-1 was dissolved in 40 ml of dioxane and 718 mg (3 equivalents) of sodium hydride (60% oil-dispersion) was added thereto. After adding 5.13 g (6 equivalents) of 1-bromo-2-chloroethane, the mixture was heated under reflux at 100° C. for 5 hours. The reaction mixture was concentrated and ice/water was added thereto followed by extracting with ether. The extract was washed with water, dried and concentrated. The residue thus obtained was purified by silica gel chromatography (eluent: hexane:ethyl acetate=50:1) to give 1.78 g (yield: 95.1%) of the titled compound. The physicochemical data of the obtained product are shown in the following Table 3. 
     Table 3 further shows the compounds of Reference Examples IV-3 to IV-16 which were produced in the same manner as the one described in this Reference Example. 
     REFERENCE EXAMPLE IV-17 
     4-Chloro-1a, 7a-dihydro-7(1H)-(2,3-oxypropyloxyimino)-1a-phenylcyclopropa[b]chromen ##STR80## 
     340 mg of the compound of Reference Example III-3 was dissolved in 12 ml of THF and 95.2 mg (2 equivalents) of sodium hydride (60% oil-dispersion) and 440 mg (4 equivalents) of epichlorohydrin were added thereto. After refluxing for 2 hours, the reaction mixture was poured onto ice/water and then extracted with either. The extract was washed with water and dried. The residue thus obtained was purified by silica gel column chromatography (eluent: hexane:ethyl acetate=9:1) to give 307 mg (yield: 79.2%) of the titled compound. The physicochemical data of the obtained product are shown in the following Table 3. 
     
                                           TABLE 3                                 
__________________________________________________________________________
Reference                                                                 
Example                                                                   
      Structure              m.p. (°C.)                            
                                    IR      NMR                           
__________________________________________________________________________
IV-1                                                                      
       ##STR81##             oil    3050 2960 1620 1450 1255 1080 1010    
                                    740 3030 2930 1610 1380 1235 1030     
                                        760 700                           
                                            1.62(t, 1H, J=6.4Hz) 1.88(dd, 
                                            1H, J=6.4Hz &amp; 9.6Hz) 3.06(dd, 
                                            1H, J=6.4Hz &amp; 9.6Hz) 3.62(t,  
                                            2H, J=6.7Hz) 4.46(t, 2H,      
                                            J=6.7Hz) 6.93-7.82(m, 9H)     
IV-2                                                                      
       ##STR82##             oil    3015 1620 1380 1255 1090  980 800     
                                        2870 1455 1315 1235 1035  870 760 
                                        95  1.63(t, 1H, J=6.6Hz) 1.91(dd, 
                                            1H, J=6.6Hz &amp; 10.6Hz)         
                                            3.07(dd, 1H, J=6.6Hz &amp;        
                                            10.6Hz) 3.81(t, 2H, J=5.9Hz)  
                                            4.41(t, 2H , J=5.9Hz)         
                                            6.95-7.50(m, 8H) 7.81(dd, 1H, 
                                            J=1.3Hz &amp; 8.1Hz)              
IV-3                                                                      
       ##STR83##             oil    2930 1595 1450 1375 1222 1030  920    
                                    746 1612 1480 1415 1302 1075  980 812 
                                        95  1.60(t, 1H, J=6.6Hz) 1.92(dd, 
                                            1H, J=6.6Hz &amp; 10.6Hz)         
                                            3.04(dd, 1H, J=6.6Hz &amp;        
                                            10.6Hz) 3.80(t, 2H, J=5.9Hz)  
                                            4.40(t, 2H,                   
                                            J=5.9Hz) 6.9-7.05(m,          
                                            2H)7.30-7.5(m, 5H) 7.75(d,    
                                            1H, J=8.6Hz)                  
IV-4                                                                      
       ##STR84##             oil    3020 1610 1475 1410 1220 1062  975    
                                    805 690                               
                                        2920 1590 1448 1300 1082  1030    
                                        910 745                           
                                            1.60(t, 1H, J=6.6Hz) 1.92(dd, 
                                            1H, J=6.6Hz &amp; 10.6Hz)         
                                            3.04(dd, 1H, J=6.6Hz &amp;        
                                            10.6Hz) 3.79(t, 2H, J=6.0Hz)  
                                            4.40(t, 2H, J=6.0Hz) 7.10(dd, 
                                            1H, J=2.0Hz &amp; 8.6Hz) 7.17(s,  
                                            1H)7.3-7.5(m, 5H) 7.68(d, 1H, 
                                            J=8.6Hz)                      
IV-5                                                                      
       ##STR85##             oil    2950 1605 1455 1260 1200 1085  860    
                                    760 2840 1500 1425 1220 1170 1035     
                                        805 695                           
                                            1.57(t, 1H, J=6.6Hz) 1.89(dd, 
                                            1H, J=6.6Hz &amp; 10.6Hz)         
                                            3.02(dd, 1H, J=6.6Hz &amp;        
                                            10.6Hz) 3.81(t, 2H, J=5.9Hz)  
                                            3.87(s, 3H), 3.90(s, 3H)      
                                            4.40(t, 2H, J=5.9Hz) 6.50(s,  
                                            1H)7.21-7.49(m, 6H)           
IV-6                                                                      
       ##STR86##             oil     2900 1490 1380 1310 1230 1030  815   
                                    745 1610 1450 1340 1255 1085  980     
                                            1.63(t, 1H, J=6.6Hz) 1.85(dd, 
                                            1H, J=6.6Hz &amp; 10.5Hz)         
                                            3.03(dd, 1H, J=6.6Hz &amp;        
                                            10.5Hz) 3.78-3.84(m, 2H),     
                                            4.39-4.43(m, 2H) 6.96-7.40(m, 
                                            7H) 7.81(dd, 1H, J=2.2Hz &amp;    
                                            7.9Hz)                        
IV-7                                                                      
       ##STR87##             oil    1612 1555 1415 1330 1265 1135 1090    
                                    1022  920 850 750                     
                                        1598 1480 1370 1305 1220 1108     
                                        1070 1005  880 812 725            
                                            1.61(t, 1H, J=7.3Hz) 1.88(dd, 
                                            1H, J=7.3Hz &amp; 10.6Hz)         
                                            3.02(dd, 1H, J=7.3Hz &amp;        
                                            10.6Hz) 3.80(t, 2H, J=5.9Hz)  
                                            4.41(t, 2H,                   
                                            J=5.9Hz) 6.9-7.0(m,           
                                            2H)7.37(s, 4H) 7.75(d, 1H,    
                                            J=8.6Hz)                      
IV-8                                                                      
       ##STR88##             oil    3050 1615 1455 1310 1230 1105  980    
                                    760 690                               
                                        2900 1600 1380 1255 1125 1030     
                                        870 740                           
                                            1.61(t, 1H, J=6.6Hz) 1.89(dd, 
                                            1H, J=6.6Hz &amp; 10.6Hz)         
                                            2.26-2.35(m, 2H), 2.99(dd,    
                                            1H, J=6.6Hz &amp; 10.6Hz) 3.53(t, 
                                            2H, J=6.6Hz) 4.34(t, 2H,      
                                            J=5.3Hz) 6.94-7.49(m, 8H)     
                                            7.82(dd, 1H, J=1.3Hz &amp;        
                                            7.9Hz)                        
IV-9                                                                      
       ##STR89##             oil    3060 1620 1500 1460 1340 1260 1050    
                                    760 695                               
                                        2970 1600 1480 1380 1310 1235     
                                        980 740                           
                                            1.61(t, 1H, J=6.3Hz) 1.88(dd, 
                                            1H, J=6.3Hz &amp; 11.1Hz)         
                                            2.16-2.26(m, 2H) 2.98(dd, 1H, 
                                            J=6.3Hz &amp; 11.1Hz) 3.67(t, 2H, 
                                            J=14.3Hz)  4.30-4.36(m, 2H)   
                                            6.93-7.83(m, 9H)              
 IV-10                                                                    
       ##STR90##             oil    2920 1610 1445 1375 1220 1040  805    
                                    690 2820 1480 1410 1300 1070  980     
                                            1.59(t, 1H, J=6.6Hz) 1.91(dd, 
                                            1H, J=6.6Hz &amp; 10.5Hz)         
                                            2.21(quintett, 2H, J=6.2Hz)   
                                            2.97(dd, 1H, J=6.6Hz &amp;        
                                            10.5Hz) 3.67(t, 2H, J=6.2Hz)  
                                            4.33(t, 2H,                   
                                            J=6.2Hz) 6.93-7.46(m, 7H)     
                                            7.76(d, 1H, J=8.6Hz)          
 IV-11                                                                    
       ##STR91##             oil    2920 1590 1448 1370 1300 1220 1102    
                                    980 875 742                           
                                        1605 1475 1410 1330 1260 1135     
                                        1035  902 805 685                 
                                            1.50-1.65(t, 1H, J=6.6Hz)     
                                            1.91(dd, 1H, J=6.6Hz &amp;        
                                            10.6Hz) 2.15-2.3(m, 2H)       
                                            2.97(dd, 1H, J=6.6Hz &amp;        
                                            10.6Hz) 3.67(t, 2H, J=6.6Hz)  
                                            4.33(t, 2H, J=6.6Hz) 7.10(dd, 
                                            1H, J=2.0Hz &amp; 8.6Hz) 7.17(d,  
                                            1H, J=2.0Hz) 7.3-7.5(m, 5H)   
                                            7.69(d, 1H, J=8.6Hz)          
 IV-12                                                                    
       ##STR92##             oil    2920 1600 1465 1420 1300 1210 1160    
                                    1035  805 690                         
                                        1620 1500 1450 1370 1255 1195     
                                        1080  865 755                     
                                            1.56(t, 1H, J=6.6Hz) 1.87(dd, 
                                            1H, J=6.6Hz &amp; 10.5Hz)         
                                            2.22(quintett, 2H, J=6.6Hz)   
                                            2.94(dd, 1H, J=6.6Hz &amp;        
                                            10.5Hz) 3.69(t, 2H, J=6.6Hz)  
                                            3.87(s, 3H), 3.90(s, 3H)      
                                            4.32(t, 2H, J=6.6Hz) 6.49(s,  
                                            1H) 7.23-7.48(m, 6H)          
 IV-13                                                                    
       ##STR93##             oil    2920 1592 1412 1305 1090 1020         
                                        1605 1480 1375 1220 1040          
                                            1.60(t, 1H, J=6.6Hz) 1.87(dd, 
                                            1H, J=6.6Hz &amp; 10.6Hz)         
                                            2.15-2.25(m, 2H) 2.94(dd, 1H, 
                                            J=6.6Hz &amp; 10.6Hz) 3.67(t, 2H, 
                                            J=6.6Hz)  4.33(t, 2H,         
                                            J=6.6Hz)6.9-7.0(m, 2H)        
                                            7.3-7.45(m, 4H)7.75(d, 1H,    
                                            J=7.9Hz)                      
 IV-14                                                                    
       ##STR94##             oil    3050 2940 1615 1500 1450 1340 1255    
                                    1030  760 690                         
                                        3030 2870 1600 1480 1380 1315     
                                        1235  980 740                     
                                            1.51(t, 1H,                   
                                            J=6.4Hz) 1.84-2.06(m, 5H)     
                                            2.99(dd, 1H, J=6.4Hz &amp;        
                                            10.9Hz) 3.47(t, 2H, J=7.1Hz)  
                                            4.22(t, 2H,                   
                                            J=5.8Hz) 6.95-7.83(m, 9H)     
 IV-15                                                                    
       ##STR95##             oil    3050 2930 1610 1480 1380 1230         
                                        3020 2860 1595 1445 1250  760     
                                            1.60-1.98(m, 8H) 3.01(dd, 1H, 
                                            J=5.8Hz &amp; 10.9Hz) 3.42(t, 2H, 
                                            J=6.4Hz) 4.20(t, 2H, J=6.4Hz) 
                                            .94-7.85(m, 9H)               
 IV-16                                                                    
       ##STR96##             oil    2960 2875 1600 1480 1225 1075 1010    
                                    815 760                               
                                        2940 1615 1495 1415 1100 1025     
                                        990 785                           
                                            1.59(t, 1H,                   
                                            J=6.6Hz) 1.8-2.1(m, 5H)       
                                            2.95(dd, 1H, J=6.6Hz &amp;        
                                            10.6Hz)  3.47(t, 2H, J=6.6Hz) 
                                            .22(m, 2H) 6.9-7.0(m, 2H)     
                                            7.37(s, 4H) 7.76(d, 1H,       
                                            J=8.6Hz)                      
 IV-17                                                                    
       ##STR97##             oil    3050 2820 1590 1220  980 685          
                                        2980 1605 1410 1040  740          
                                            1.59(t, 1H, J=6.4Hz) 1.92(dd, 
                                            1H, J=6.4Hz &amp; 10.2Hz) 2.67(m, 
                                            1H)2.87(m, 1H) 3.03(m,        
                                            1H)3.23(m, 1H) 4.12(dd, 1H,   
                                            J=7.7Hz &amp; 12.8Hz) 4.40(dd,    
                                            1H, J=3.2Hz &amp; 12.8Hz)         
                                            6.95(dd, 1H, J=2.7Hz &amp; 7.7Hz) 
                                            .99(d, 1H, J=2.7Hz) 7.25-7.52(
                                            m, 5H) 7.77(d, 1H,            
__________________________________________________________________________
                                            J=7.7Hz)                      
 
    
    
    
     EXAMPLE 1 
     1a, 7a-Dihydro-7(1H)-(2-methylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=2] 
     260 mg of the compound of Reference Example IV-2 was dissolved in 10 ml of dioxane and 10 ml of monomethylaminesaturated dioxane was added thereto. The mixture was heated to 100° C. in a sealed tube for 17 hours. After distilling off the dioxane, water and an aqueous solution of sodium hydroxide were added thereto followed by extracting with methylene chloride. The extract was washed with water and dried over anhydrous magnesium sulfate. After filtering and concentrating the solution, the obtained residue was eluted with silica gel column chromatography by using methylene chloride/methanol (9:1). Thus 213 mg (yield: 83.4%) of the titled compound was obtained. The product thus obtained was further converted into the tartrate in a conventional manner. 
     EXAMPLE 2 
     4-Chloro-1a,7a-dihydro-7(1H)-(2-methylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=2] 
     Starting from the compound of Reference Example IV-3, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 3 
     4-Bromo-1a,7a-dihydro-7(1H)-(2-methylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=2] 
     Starting from the compound of Reference Example IV-4, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 4 
     1a, 7a-Dihydro-4,5-dimethoxy-7(1H)-(2-methylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3  ; A 2  =5-OCH 3  ; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=2] 
     Starting from the compound of Reference Example IV-5, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 5 
     1a-(4-Chlorophenyl)-1a, 7a-dihydro-7(1H)-(2-methylaminoethyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =4-Cl; NR 1  R 2  =NHCH 3  and n=2] 
     Starting from the compound of Reference Example IV-6, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 6 
     4-Chloro-1a-(4-chlorophenyl)-1a,7a-dihydro-7(1H)-(2-methylaminoethyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =H; B 2  =4-Cl; NR 1  R 2  =NHCH 3  and n=2] 
     Starting from the compound of Reference Example IV-7, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 7 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     600 mg (2.4 mmol) of the compound of Reference Example III-1 was dissolved in 20 ml of tetrahydrofuran and 382 mg (9.6 mmol) of sodium hydride (60% oil-dispersion) and 1.54 g (7.2 mmol) of dimethylaminoethyl chloride were added thereto. The obtained mixture was heated under reflux over a day and night. The reaction mixture was concentrated and ice/water was added thereto followed by extracting with ether. The ether phase was washed with water and dried over anhydrous magnesium sulfate. After filtering and concentrating, the residue thus obtained was eluted by neutral silica gel column chromatography by eluting with methylene chloride/methanol (95:5) to give 220 mg (yield: 30.2%) of the titled compound. The product thus obtained was further converted into the maleate by a conventional manner and crystallized from ethanol/ether. 
     EXAMPLE 8 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-4-fluoro-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-F; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-2, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 9 
     4-Chloro-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-3, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 10 
     4-Bromo-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-4, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 11 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-4-methoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-5, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 12 
     5-Chloro-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =5-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-7, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 13 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-5-methoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =5-OCH 3  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-8, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 14 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-6-methoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =6-OCH 3  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-9, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 15 
     4,5-Dichloro-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =5-Cl; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-11, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 16 
     1a,7a-Dihydro-4,5-dimethoxy-7(1H)-(2-dimethylaminoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3  ; A 2  =5-OCH 3  ; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-12, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 17 
     1a-(4-Chlorophenyl)-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-19, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 18 
     1a,7a-Dihydro-7-(1H)-(2-dimethylaminoethyloxyimino)-1a-(4-methoxyphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-OCH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-20, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 19 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-(4-methylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-21, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 20 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-(4-trifluoromethylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CF 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-22, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 21 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-(4-methoxycarbonylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CO 2  CH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-23, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 22 
     1a-(4-Cyanophenyl)-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CN; B 1  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-24, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 23 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminoethyloxyimino)-1a-(4-nitrophenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-NO 2  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-25, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 24 
     1a-(3,4-Dichlorophenyl)-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-Cl; B 2  =4-Cl; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-26, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 25 
     4-Chloro-1a-(4-chlorophenyl)-1a,7a-dihydro-7(1H)-(2-dimethylaminoethyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=2] 
     Starting from the compound of Reference Example III-28, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 26 
     7(1H)-(2-Diethylaminoethyloxyimino)-1a,7a-dihydro-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(C 2  H 5 ) 2  and n=2] 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 27 
     7(1H)-(2-Diethylaminoethyloxyimino)-1a,7a-dihydro-4,5-dimethoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3  ; A 2  =5-OCH 3  ; B 1  =H; B 2  =H; NR 1  R 2  =N(C 2  H 5 ) 2  and n=2] 
     Starting from the compound of Reference Example III-12, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 28 
     1a,7a-Dihydro-7(1H)-(2-morpholinoethyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =morpholino and n=2] 
     Starting from the compound of Reference Example IV-1, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 29 
     1a,7a-Dihydro-7(1H)-[2-(4-methyl-1-piperazinyl)ethyloxyimino]-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; ##STR98## and n=2] 
     Starting from the compound of Reference Example IV-2, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 30 
     1a,7a-Dihydro-1a-phenyl-7(1H)-[2-(1-piperidinyl)ethyloxyimino]-cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =piperidinyl and n=2] 
     Starting from the compound of Reference Example IV-2, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 31 
     1a,7a-Dihydro-7(1H)-[2-(1-homopiperidinyl)ethyloxyimino]-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =homopiperidinyl and n=2] 
     Starting from the compound of Reference Example IV-2, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 32 
     7(1H)-(3-aminopropyloxyimino)-1a,7a-dihydro-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NH 2  and n=3] 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 33 
     1a,7a-Dihydro-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. Then the obtained product was converted into the fumarate (m.p.: 131°-133° C.), the maleate (m.p.: 160°-162° C.) and the oxalate (m.p.: 168°-171° C.), in addition to the tartrate. 
     EXAMPLE 34 
     1a,7a-Dihydro-4-fluoro-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-F; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-2, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 35 
     4-Chloro-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-3, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 36 
     4-Bromo-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-4, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 37 
     1a,7a-Dihydro-4-methoxy-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-5, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 38 
     5-Chloro-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =5-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-7, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 39 
     4,5-Dichloro-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =5-Cl; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-11, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 40 
     1a, 7a-Dihydro-4,5-dimethoxy-7(1H)-(3-methylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3  ; A 2  =5-OCH 3  ; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-12, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 41 
     1a,7a-Dihydro-7(1H)-(3-methylaminopropyloxyimino)-1a-(4-methoxyphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-OCH 3  ; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-20, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 42 
     1a-(3,4-Dichlorophenyl)-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-Cl; B 2  =4-Cl; NR 1  r 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-26, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 43 
     1a,7a-Dihydro-4-fluoro-1a-(4-fluorophenyl)-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-F; A 2  =H; B 1  =4-F; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-30, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 44 
     4-Chloro-1a,7a-dihydro-1a-(4-fluorophenyl)-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-F; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-31, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 45 
     4-Chloro-1a-(4-chlorophenyl)-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-28, the titled compound was produced in the same manner as the one described in Example 7. Then the product was converted into the maleate (m.p.: 105°-107° C.) and the fumarate (m.p.: 155°-157° C.), in addition to the tartrate. 
     EXAMPLE 46 
     1a-(4-Bromophenyl)-4-chloro-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-Br; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-32, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 47 
     4-Bromo-1a,7a-dihydro-1a-(4-fluorophenyl)-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H; B 1  =4-F; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-33, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 48 
     4-Bromo-1a-(4-chlorophenyl)-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-34, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 49 
     4-Bromo-1a-(4-bromophenyl)-1a,7a-dihydro-7(1H)-(3-methylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H, B 1  =4-Br; B 2  =H; NR 1  R 2  =NHCH 3  and n=3] 
     Starting from the compound of Reference Example III-35, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 50 
     1a,7a-Dihydro-7(1H)-(3-ethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 51 
     1a,7a-Dihydro-4-fluoro-7(1H)-(3-ethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-F; A 2  =H; B 1  =H; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-2, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 52 
     4-Chloro-1a,7a-dihydro-7(1H)-(3-ethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-3, the titled compound was produced in the same manner as the one described in Example 74 
     EXAMPLE 53 
     4-Bromo-1a,7a-dihydro-7(1H)-(3-ethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-4, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 54 
     5-Chloro-1a,7a-dihydro-7(1H)-(3-ethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =5-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-7, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 55 
     4,5-Dichloro-1a,7a-dihydro-7(1H)-(3-ethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =5-Cl; B 1  =H; B 2  =H; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-11, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 56 
     1a-(3,4-Dichlorophenyl)-1a,7a-dihydro-7(1H)-(3-ethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-Cl; B 2  =4-Cl; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-26, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 57 
     4-Chloro-1a-(4-chlorophenyl)-1a,7a-dihydro-7(1H)-(3-ethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =NHC 2  H 5  and n=3] 
     Starting from the compound of Reference Example III-28, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 58 
     1a,7a-Dihydro-7(1H)-(3-propylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 2  CH 2  CH 3  and n=3] 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 59 
     1a,7a-Dihydro-7(1H)-[3-(N-isopropylamino)propyloxyimino]-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 60 
     7(1H)-[3-(N-Benzylamino)propyloxyimino]-1a, 7a-dihydro-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 2  -C 6  H 5  and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 61 
     1a, 7a-Dihydro-1a-phenyl-7(1H)-[3-(N-phenylethylamino)propyloxyimino]cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 2  CH 2  -C 6  H 5  and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 62 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 63 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-4-fluoro-1a -phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-F; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-2, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 64 
     4-Chloro-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-3, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 65 
     4-Bromo-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Br; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-4, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 66 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-4-methoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3 , A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-5, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 67 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-4-benzyloxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 2  -C 6  H 5 , A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-6, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 68 
     5-Chloro-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =5-Cl; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-7, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 69 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-5-methoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =5-OCH 3 , A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-8, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 70 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-6-methoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =6-OCH 3  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-9, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 71 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-3,4-dimethoxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =3-OCH 3  ; A 2  =4-OCH 3  ; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-10, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 72 
     4,5-Dichloro-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =5-Cl; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-11, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 73 
     1a,7a-Dihydro-4,5-dimethoxy-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 3  ; A 2  =5-OCH 3  ; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-12, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 74 
     4,5-Dibenzyloxy-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 2  -C 6  H 5  ; A 2  =5-OCH 2  -C 6  H 5  ; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-13, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 75 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(2-methoxyphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  2-OCH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-14, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 76 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(2-methylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =2-CH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-15, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 77 
     1a, 7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(3-chlorophenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-Cl; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-16, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 78 
     1a, 7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(3-methoxyphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-OCH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-17, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 79 
     1a, 7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(3-methylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-CH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-18, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 80 
     1a-(4-Chlorophenyl)-1a, 7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-19, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 81 
     1a, 7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(4-methoxyphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-OCH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-20, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 82 
     1a, 7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(4-methylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-21, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 83 
     1a, 7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(4-trifluoromethylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CF 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-22, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 84 
     1a, 7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(4-methoxycarbonylphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CO 2  CH 3  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-23, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 85 
     1a-(4-Cyanophenyl)-1a, 7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-CN; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-24, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 86 
     1a,7a-Dihydro-7(1H)-(2-dimethylaminopropyloxyimino)-1a-(4-nitrophenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =4-NO 2  ; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-25, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 87 
     1a-(3,4-Dichlorophenyl)-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-Cl; B 2  =4-Cl; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-26, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 88 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(3,4-dimethoxyphenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =3-OCH 3  ; B 2  =4-OCH 3  ; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-27, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 89 
     4-Chloro-1a-(4-chlorophenyl)-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-28, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 90 
     4-Chloro-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-(4-nitrophenyl)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-NO 2 , B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-29, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 91 
     1a,7a-Dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-4-hydroxy-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OH; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     93 mg of 10% palladium on carbon was suspended in 6 ml of ethyl acetate and subjected to hydrogen-replacement under suction. Next, 311 mg of the compound of Example 67 was added thereto and the mixture was stirred under a hydrogen gas stream (atmospheric pressure) at room temperature for 24 hours. After filtering, the filtrate was concentrated and introduced through a silica gel column chromatography with the use of methylene chloride/methanol (9:1) as the eluent. Thus 195 mg (yield: 78%) of the titled compound was obtained. 
     EXAMPLE 92 
     4-Acetyloxy-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCOCH 3  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     300 mg of the compound of Example 91 was dissolved in 10 ml of pyridine and 5 ml of acetic anhydride. After stirring at room temperature for 1 hour, the solvent was distilled off and the residue was dissolved in methylene chloride. Next it was washed with an aqueous solution of sodium hydrogencarbonate and then with water and dried over anhydrous magnesium sulfate. After filtering, the filtrate was concentrated and introduced through a silica gel column chromatography with the use of methylene chloride/methanol (9:1) as the eluent. Thus 329 mg (yield: 98.0%) of the titled compound was obtained. 
     EXAMPLE 93 
     1a,7a-Dihydro-4-(N,N-dimethylcarbamoyloxy)-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCON(CH 3 ) 2  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     139 mg of the compound of Example 91 was dissolved in 20 ml of methylene chloride. After adding 0.11 ml (3 equivalents) of N,N-dimethylcarbamoyl chloride and 0.55 ml (10 equivalents) of triethylamine, the mixture was heated under reflux for 7 hours. The reaction mixture was cooled, washed with an aqueous solution of sodium hydrogencarbonate and then with water and dried over anhydrous magnesium sulfate. After filtering and concentrating, the obtained residue was purified through silica gel column chromatography by using methylene chloride/methanol (95:5) as the eluent. Thus 144 mg (yield: 86.2%) of the titled compound was obtained. 
     EXAMPLE 94 
     4-(2-Amino-2-oxoethyloxy)-1a,7a-dihydro-7(1H)-(3-dimethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OCH 2  CONH 2  ; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     129 mg of the compound of Example 91 was dissolved in 20 ml of dioxane. After adding 21.9 mg (1.5 equivalents) of sodium hydride (60% oil dispersion), the mixture was heated to 100° C. for 30 minutes. Next, 72.2 mg (2 equivalents) of 2-chloroacetamide and 0.5 ml of dimethylsulfoxide were added thereto and the mixture was stirred at 100° C. for 3 hours. The reaction mixture was concentrated and ice/water was added thereto. After extracting with ether, the ether layer was washed with water and dried over anhydrous magnesium sulfate. After filtering and concentrating, the obtained residue was purified with a silica gel column chromatography by using methylene chloride/methanol (9:1) as the eluent. Thus 94.3 mg (yield: 62.9%) of the titled compound was obtained. 
     EXAMPLE 95 
     1a,7a-Dihydro-4,5-dihydroxy-7(1H)-(3-dimethylaminopropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-OH; A 2  =5-OH; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=3] 
     48 mg of 10% palladium on carbon was suspended in 20 ml of ethyl acetate and subjected to hydrogen-replacement under suction. 240 mg of the compound of Example 74 was added thereto and the mixture was stirred under a hydrogen stream (atmospheric pressure) at room temperature for 5 hours. Then it was treated in the same manner as the one described in Example 91. Thus 67.0 mg (yield: 41.5%) of the titled compound was obtained. 
     EXAMPLE 96 
     1a,7a-Dihydro-7(1H)-(3-diethylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(C 2  H 5 ) 2  and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 97 
     1a,7a-Dihydro-7(1H)-(3-dipropylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 2  CH 2  CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example IV-8, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 98 
     1a,7a-Dihydro-1a-phenyl-7(1H)-(3-pyrrolidinylpropyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =pyrrolidinyl and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 99 
     1a,7a-Dihydro-7(1H)-[3-(4-methyl-1-piperazinyl)propyloxyimino]-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; ##STR99## and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 100 
     1a,7a-Dihydro-1a-phenyl-7(1H)-[3-(1-piperidinyl)propyloxyimino]-cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =piperidinyl and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 101 
     1a,7a-Dihydro-7(1H)-[3-(1-homopiperidinyl)propyloxyimino]-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =homopiperidinyl and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 102 
     1a,7a-Dihydro-7(1H)-(3-dimethylamino-2-methylpropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NO(CH 2 ) n  NR 1  R 2  =NOCH 2  CH(CH 3 )CH 2  N(CH 3 ) 2  and n=3] 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 103 
     7(1H)-[3-(N-Benzyl-N-methylamino)propyloxyimino]-1a,7a-dihydro-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 )CH 2  -C 6  H 5  and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 104 
     1a,7a-Dihydro-1a-phenyl-7(1H)-[3-(1-pyrrolidonyl)propyloxyimino]cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =pyrrolidonyl and n=3] 
     Starting from the compound of Reference Example IV-9, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 105 
     1a,7a-Dihydro-1a-phenyl-7(1H)-[2-(8-pyrrolitidinyl)ethyloxyimino]cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H and ##STR100## 
     Starting from the compound of Reference Example III-1, the titled compound was produced in the same manner as the one described in Example 7. 
     EXAMPLE 106 
     4-Chloro-1a,7a-dihydro-7(1H)-(2-hydroxy-3-isopropylaminopropyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =H; B 2  =H; ##STR101## 
     Starting from the compound of Reference Example IV-17, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 107 
     1a,7a-Dihydro-7(1H)-(4-methylaminobutyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =NHCH 3  and n=4] 
     Starting from the compound of Reference Example IV-14, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 108 
     1a,7a-Dihydro-7(1H)-(4-dimethylaminobutyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =H; A 2  =H; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=4] 
     Starting from the compound of Reference Example IV-14, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 109 
     1a,7a-Dihydro-7(1H)-(5-dimethylaminopentyloxyimino)-1a-phenylcyclopropa[b]chromen [Compound of the general (I) wherein A 1  =H; A 2  =h; B 1  =H; B 2  =H; NR 1  R 2  =N(CH 3 ) 2  and n=5] 
     Starting from the compound of Reference Example IV-15, the titled compound was produced in the same manner as the one described in Example 1. 
     EXAMPLE 110 
     4-Chloro-1a-(4-chlorophenyl)-1a,7a-dihydro-7(1H)-(4-methylaminobutyloxyimino)cyclopropa[b]chromen [Compound of the general formula (I) wherein A 1  =4-Cl; A 2  =H; B 1  =4-Cl; B 2  =H; NR 1  R 2  =NHCH 3  and n=4] 
     Starting from the compound of Reference Example IV-16, the titled compound was produced in the same manner as the one described in Example 1. 
     The physicochemical data of the compounds produced in the above Examples are given in Table 4. 
     
         TABLE 4
  Example Structure m.p. (°C.) IR NMR Elementary Analysis/MS
    1
  ##STR102##
  hygroscopic 2900 27801610 14501380 13401305 12501225 1040 970  940 870
 760 740  690 1.62(t, 1H, J=6.6Hz)1.90(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.49(s,
 3H), 2.96(t, 2H, J=5.3Hz)3.02(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.32(t, 2H,
 J=5.3Hz)6.95- 7.49(m, 8H)7.81(dd, 1H, J=1.5Hz &amp; 7.9Hz) L-tartrate.5/4H.su
 b.2 OCHNCalc.:57.43 5.76 5.82Found: 57.30 5.84 5.68
  2
 ##STR103##
  75-78L-tartrate 29301610 14751450 14151215 1040 980  920 808  746 609
 1.62(t, 1H, J=6.6Hz)1.91(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.48(s, 3H), 2.9-3.05(m
 , 3H)4.31(t, 2H, J=5.3Hz)6.9-7.01(m, 2H)7.3-7.5(m, 5H)7.76(d, 1H,
 J=8.6Hz) L-tartrate.1H.sub.2 OCHNCalc.:54.06 5.33 5.48Found: 54.11 5.38
 5.34
  3
 ##STR104##
  163-170L-tartrate 2920 16021585 14701442 14051300 12151102 1040 975
 912 802  742
  685 1.59(t, 1H, J=7.3Hz)1.91(dd, 1H, J=7.3Hz &amp; 10.6Hz)2.48(s, 3H)2.9-3.0
 5(m, 3H)4.31(t, 2H, J=5.3Hz)7.10(dd, 1H, J=2.0Hz &amp; 8.3Hz)7.17(d, 1H,
 J=2.0Hz)7.3-7.5(m, 5H)7.69(d, 1H, J=8.6Hz) L-tartrateCHNCalc.:51.40 4.69
 5.21 Found: 51.29 4.90 5.50
  4
 ##STR105##
  88-89L-tartrate 2930 28401600 15001455 14201380 13101260 12151165
 10801040  860 800  755 695 1.57(t, 1H, J=6.6Hz)1.88(dd, 1H, J=6.6Hz &amp;
 10.6Hz)2.49(s, 3H), 2.94(t, 2H, J=5.1Hz)2.97(dd, 1H, J=6.6Hz &amp; 10.6Hz)3.8
 7(s, 3H), 3.89(s, 3H)4.31(t, 2H, J=5.1Hz)6.49(s, 1H)7.22-7.49(m, 6H)
 L-tartrate.1H.sub.2 OCHNCalc.:55.96 6.01 5.22Found: 55.79 6.06 4.91  5
  ##STR106##
  hygroscopic 2930 28501610 14801450 13801310 12551230 11001090 1040  975
  940 880  815
  760 1.63(t, 1H, J=6.6Hz)1.85(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.48(s, 3H),
 2.95(t, 2H, J=5.3Hz)2.97(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.32(t, 2H, J=5.3Hz)6.9
 5-7.42(m, 7H)7.81(dd, 1H, J=1.3Hz &amp; 7.9Hz) L-tartrate.1H.sub.2           5
  OCHNCalc.:4.07 5.33 5.48Found: 53.76 5.22 5.42
  6
 ##STR107##
  88-93L-tartrate 2930 28702790 16121598 14801415 13801308 12251098 1050
 982  920 885  815 755 1.60(t, 1H, J=6.6Hz)1.86(dd, 1H, J=6.6Hz &amp;
 10.9Hz)2.48(s, 3H)2.9- 3.05(m, 3H)4.25-4.35(m, 2H)6.9-7.0(m, 2H)7.37(s,
 4H)7.76(d, 1H, J=8.6Hz) L-tartrate 5/4H.sub.2 OCHNCalc.:50.23 4.85
 5.09Found: 50.00 4.73 5.00
  7
 ##STR108##
  115-118maleate 2960 29402820 27601615 16001450 12501230 1030 760  740
 690 1.62(t, 1H, J=6.4Hz)1.87(dd, 1H, J=6.4Hz &amp; 10.9Hz)2.30(s, 6H),
 2.69(t, 2H, J=5.8Hz)3.03(dd, 1H, J=6.4Hz &amp; 10.9Hz)4.18-4.42(m, 2H)6.95-7.
 85(m, 9H) oleate.1/2H.sub.2 OCHNCalc.:64.41 6.08 6.26Found: 64.86 6.06
 6.29
  8
 ##STR109##
  148.5-150maleate 2940 16201602 15001430 12601210 11481025  995 845
 1.59(t, 1H, J=6.6Hz)1.89(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.31(s, 6H), 2.69(t,
 2H, J=5.9Hz)3.02(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.24-4.35(m, 2H)6.65-6.75(m,
 2H)7.29-7.5(m, 5H)7.79-7.85(m, 1H) maleate CHNCalc.:63.15 5.52 6.13Found:
  63.00 5.62 6.08
  9
 ##STR110##
  164-166maleate 3060 29502820 27701620 16051560 14201230 1040 980  750
 695 1.58(t, 1H, J=6.6Hz)1.89(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.31(s, 6H)2.7(t,
 2H, J=5.9Hz)3.02(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.30(m, 2H)6.95(dd, 1H,
 J=2.3Hz &amp; 8.6Hz)6.99(d, 1H, J=2.3Hz) 7.27 -7.50(m, 5H)7.77(d, 1H,
 J=8.6Hz) HiMSCalc.:356.1288Found: 356.1271
  10
 ##STR111##
  164.5-165.5maleate 2950 16101595 14801415 13101205 1040 980  920 860
 720 1.5-1.65(m, 1H)1.89(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.31(s, 6H), 2.69(t,
 2H, J=5.9Hz)3.01(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.25-4.35(m, 2H)7.09(dd, 1H,
 J=2.0Hz &amp; 8.3Hz)7.15-7.17(m, 1H)7.3- 7.5(m, 5H)7.70(d, 1H, J=8.6Hz)
 maleate.1/6H.sub.2 OCHNCalc.:55.39 4.91 5.38Found: 55.04 4.87 5.26  11
  ##STR112##
  oil 2920 28002750 16151580 14951440 14201380 13401280 12601190 11601080
 1025 990  750 1.58(t, 1H, J=6.6Hz)1.87(dd, 1H, J=6.6Hz &amp; 10.2Hz)2.32(s,
 6H), 2.70(t, 2H, J=5.8Hz)2.98(dd, 1H, J=6.6Hz &amp; 10.2Hz)3.79(s, 3H),
 4.29(m, 2H)4.47-7.76(m, 8H)  HiMSCalc.:352.1785Found: 352.1765  12
  ##STR113##
  144.5-148maleate 3050 29402820 27701615 15951470 14501430 13751290
 12501225 11101035  980 882  810 760  700 1.58(t, 1H, J=7.3Hz)1.89(dd,
 1H, J=7.3Hz &amp; 10.6Hz)2.32(s, 6H)2.70(t, 2H, J=5.9Hz)3.01(dd, 1H, J=7.3Hz
 &amp; 10.6Hz)4.25-4.4(m, 2H) 6.91(d, 1H, J=9.2Hz)7.23-7.5(m, 6H)7.81(d, 1H,
 J=2.6Hz) maleateCHNCalc.:60.95 5.33 5.92Found: 60.78 5.34 5.89  13
  ##STR114##
  145-146maleate 2930 27501600 14801450 14301300 12501215 10801035  980
 860  820 1.57(t, 1H, J=6.6Hz)1.84(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.31(s, 6H),
 2.70(t, 2H, J=5.9Hz)3.01(dd, 1H, J=6.6Hz &amp; 10.6Hz)3.81(s, 3H)4.32(t, 2H,
 J=5.9Hz)6.90-7.47(m, 8H) maleate.1/2H.sub. 2 OCHNCalc.:64.14 6.58
 5.54Found: 64.18 6.12 5.97
  14
 ##STR115##
  citratehygroscopic 2930 27501600 14501380 13301275 12401220 10951030
 930 840  780 750  725 690 1.66(t, 1H, J=6.6Hz)1.75(dd, 1H, J=6.6Hz &amp;
 10.6Hz)2.33(s, 6H), 2.68-2.80(m, 2H)3.29(dd, 1H, J=6.6Hz &amp; 10.6Hz)3.88(s,
  3H), 4.29-4.38(m, 2H)6.57- 6.64(m, 2H)7.18-7.48(m, 6H) MS352(M.sup.+)
 15
  ##STR116##
  177-179maleate 2940 28202760 16151465 14021280 12351122 1035 988  885
 760
  742 1.45-1.55(m, 1H)1.90(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.31(s, 6H)2.69(t,
 2H, J=6.1Hz)2.99(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.25-4.35(m, 2H)7.10(s,
 1H)7.3-7.45(m, 5H)7.91(s, 1H) maleate.1/4H.sub.2 OCHNCalc.:56.31 4.82
 5.47Found: 56.37 4.70 5.43
  16
 ##STR117##
  122-125maleate 2920 28002750 16001500 14451415 12501205 11901160
 10801030  860 800  750 690  1.55(t, 1H, J=6.6Hz)1.85(dd, 1H, J=6.6Hz &amp;
 10.6Hz)2.32(s, 6H), 2.70(t, 2H, J=5.9Hz)2.99(dd, 1H, J=6.6Hz &amp; 10.6Hz)3.8
 6(s, 3H), 3.89(s, 3H)4.30(t, 2H, J=5.9Hz) 6.49(s, 1H)7.25-7.47(m, 6H)
 maleateCHNCalc.:62.64 6.07 5.62Found: 62.65 6.17 5.60
  17
 ##STR118##
  113-114maleate 3050 29402810 27601615 14951460 13801315 12551235
 10951035  980 885  820 760  750 1.62(t, 1H, J=6.6Hz)1.84(dd, 1H, J=6.6Hz
 &amp; 10.5Hz)2.41(s, 6H), 2.82(t, 2H, J=5.7Hz)3.02(dd, 1H, J=6.6Hz &amp;
 10.5Hz)4.37(t, 2H, J=5.7Hz)6.95- 7.41(m, 7H)7.81(d, 1H, J=7.9Hz)
 maleate.1H.sub.2 OCHNCalc.:60.18 5.68 5.85Found: 60.21 5.25 5.84  18
  ##STR119##
  109-110maleate 2930 28002760 16101510 14501380 13001245 12301170
 11001030  970 820  770 760  740 1.56(t, 1H, J=6.6Hz)1.82(dd, 1H, J=6.6Hz
 &amp; 10.6Hz)2.32(s, 6H), 2.70(t, 2H, J=5.9Hz)2.98(dd, 1H, J=6.6Hz &amp;
 10.6Hz)3.82(s, 3H), 4.31(t, 2H, J= 5.9Hz) 6.91-7.42(m, 7H)7.82(dd, 1H,
 J=1.3Hz &amp; 7.3Hz) maleateCHNCalc.:63.99 6.12 5.95Found: 64.09 6.02 5.98
 19
  ##STR120##
  137-139maleate 2940 28802820 27701620 14851460 13851315 12601235
 11051040  980  890  810 765  750 1.57(t, 1H, J=6.6Hz)1.83(dd, 1H,
 J=6.6Hz &amp; 10.6Hz)2.31(s, 6H), 2.35(s, 3H),2.69(t, 2H, J=5.9Hz)3.01(dd,
 1H, J=6.6Hz &amp; 10.6Hz)4.30(t, 2H, J= 5.9Hz) 6.93-7.36(m, 7H)7.82(dd, 1H,
 J=1.3Hz &amp; 8.1Hz) maleate.1/3H.sub.2 OCHNCalc.:66.65 6.77 5.76Found:
 66.26 6.31 6.14
  20
 ##STR121##
  56-58maleate 2940 28602820 27701615 14801455 14101320 12551235 11701120
 1030 980  950 825  760 1.69(t, 1H, J=7.3Hz)1.90(dd, 1H, J=7.3Hz &amp;        2
 10.6Hz).33(s, 6H), 2.73(t, 2H, J=5.7Hz)3.09(dd, 1H, J=7.3Hz &amp; 10.6Hz)4.33
 (t, 2H, J=5.7Hz)6.98- 7.67(m, 7H) 7.84(dd, 1H, J=2.0Hz &amp; 7.9Hz) maleate.1
 /2H.sub.2 OC HNCalc.:58.25 5.08 5.43Found: 58.25 5.06 5.41
  21
 ##STR122##
  116-118maleate 2930 17201610 14551435 14001380 13151280 12351180
 11151040  980 950  840 825  760 740  700 1.69(t, 1H, J=7.2Hz)1.91(dd,
 1H, J=7.2Hz &amp; 10.5Hz)2.34(s, 6H), 2.74(t, 2H, J=5.9Hz)3.09(dd, 1H,
 J=7.2Hz &amp; 10.5Hz)3.93(s, 3H)4.34(t, 2H, J=5.9Hz)6.97-8.07(m, 8H)
 maleate.1/4H.sub.2 OCHNCalc.:62.33 5.73 5.59Found: 62.34 5.60 5.55  22
  ##STR123##
  128-130maleate 2940 22301615 14801460 13801310 12551200 11021030  980
 820  710 1.72(t, 1H, J=7.3Hz)1.89(dd, 1H, J=7.3Hz &amp; 10.6Hz)2.31(s, 6H),
 2.70(t, 2H, J=5.9Hz)3.10(dd, 1H, J=7.3Hz &amp; 10.6Hz)4.25-4.40(m, 2H)6.95-7.
 05(m, 2H)7.30-7.40(m, 1H) 7.53(d, 2H, J=7.9Hz)7.69(d, 2H, J=7.9Hz)7.83(dd
 , 1H, J=2.0Hz &amp; 8.3Hz) maleateCHNCalc.:64.78 5.44 9.07Found: 65.15 5.49
 9.07
  23
 ##STR124##
  142-144maleate 3070 29502860 28202770 16051520 14801345 12601235
 11051040  855 840  765 745 1.76(t, 1H, J=7.3Hz)1.94(dd, 1H, J=10.6Hz &amp;
 7.3Hz)2.32(s, 6H), 2.70(t, 2H, J=5.9Hz)3.14(dd, 1H, J=7.3Hz &amp; 10.6Hz)4.32
 (m, 2H)7.03(m, 2H)7.32(m, 1H)7.58(d, 2H, J=9.2Hz) 7.84(dd, 1H, J=8.6Hz &amp;
 1.3Hz)8.26(d, 2H, J=9.2Hz) maleateCHNCalc.:59.62 5.21 8.69Found: 59.49
 5.20 8.61
  24
 ##STR125##
  110-111.5maleate 2940 28302780 16181480 14601380 13101205 11281105 1028 9
 80  945 815 1.64(t, 1H, J=6.6Hz)1.83(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.32(s,
 6H), 2.70(t, 2H, J=5.9Hz)3.03(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.25-4.4(m,
 2H)6.95-7.05(m, 2H )7.21-7.36(m, 2H) 7.46(d, 1H, J=8.6Hz)7.56(d, 1H,
 J=2.0Hz)7.8-7.85(m, 1H) maleateCHNCalc.:56.81 4.77 5.52Found: 56.74 4.66
 5.49
  25
 ##STR126##
  122-123.5maleate 2930 27601610 15981480 14151308 12201098 10701030  982 9
 20  810 755 1.55-1.7(m, 1H)1.85(dd, 1H, J=7.3Hz &amp; 10.6Hz)2.31(s,
 6H),2.69(t, 2H, J=5.9Hz)2.99(dd, 1H, J=7.3Hz &amp; 10.6Hz)4.2-4.4(m, 2H)6.9-
 7.0(m, 2H)7.36(s, 4H)7.77(d, 1H, J=8.6Hz) maleateCHNCalc.:56.81 4.77     F
 5.52ound: 56.63 4.59 5.48
  26
 ##STR127##
  148.0-148.5citrate 2960 28001615 14551380 13451310 12551230 1030 980
 870 760  740 690 1.06(t, 6H, J=6.8Hz)1.61(t, 1H, J=6.6Hz)1.87(dd, 1H,
 J=6.6Hz &amp; 10.6Hz)2.64(quartett, 4H, J=6.8Hz)2.87(t, 2H, J=6.6Hz) 3.03(dd,
  1H, J=6.6Hz &amp; 10.6Hz)4.31(t, 2H , J=6.6Hz)6.95-7.48(m, 8H)7.83(dd, 1H,
 J=1.6Hz &amp; 7.9Hz) citrateCHNCalc.:61.98 6.32 5.16Found: 61.82 6.41 5.10
 27
  ##STR128##
  156-157citrate 2950 28101615 16001500 14601450 14201255 12101080 1035
 970  860 800  755 690 1.07(t, 6H, J=7.3Hz)1.55(t, 1H, J=6.6Hz)1.85(dd,
 1H, J=6.6Hz &amp; 10.6Hz)2.66(quartett, 4H, J=7.3Hz)2.88(t, 2H, J=6.2Hz)2.98(
 dd, 1H, J= 6.6Hz &amp; 10.6Hz)3.86(s, 3H), 3.89(s, 3H)4.31(t, 2H, J=
 6.2Hz)6.49(s, 1H)7.24-7.47(m, 6H) citrate.1/2H.sub.2 OCHNCalc.:58.91
 6.43 4.58Found: 58.86 6.28 4.57
  28
 ##STR129##
  136.5-137.5maleate 2960 28502800 16201600 14801455 13801310 12551235
 11201110 1035 980  865 760  745 690 1.62(t, 1H, J=6.4Hz)1.87(dd, 1H,
 J=6.4Hz &amp; 10.9Hz)2.52-2.57(m, 4H)2.76(t, 2H, J=5.8Hz)3.00(dd, 1H,
 J=6.4Hz &amp; 10.9Hz)3.66- 3.70(m, 4H)4.30-4.36(m, 2H)6.94-7.84(m, 9H)
 maleateCHNCalc.:64.99 5.87 5.83Found: 65.00 5.95 5.80
  29
 ##STR130##
  188-190maleate 2930 27901610 14501375 1342 1308 12801255 12301162
 11001030 1010 975  760 740  690 1.61(t, 1H, J=6.6Hz)1.87(dd, 1H, J=6.6Hz
 &amp; 10.6Hz)2.27(s, 3H), 2.3-2.7(m, 8H)2.78(t, 2H, J=6.6Hz)3.02(dd, 1H,
 J=6.6Hz &amp; 10.6Hz)4.25-4.4(m, 2H)6.95-7.0(m, 2H)7.25-7.5(m, 6H)7.82(dd,
 1H, J=2.0Hz &amp; 8.3Hz) HiMSCalc.:377.2102Found: 377.2126
  30
 ##STR131##
  72-79L-tartrate 2920 27601610 14501380 13421305 12521228 11251105 1025
 975  865 760  740
  688 1.35-1.65(m, 7H)1.87(dd, 1H, J=6.6Hz &amp; 10.6Hz)2.4-2.55(m, 4H)2.73(t,
  2H, J=5.9Hz)3.03(dd, 1H, J=6.6Hz &amp; 10.6Hz) 4.30-4.45(m, 2H)6.95-7.00(m,
 2H)7.25-7.50(m, 6H)7.81(dd, 1H, J=2.0Hz &amp; 8.3Hz) L-tartrate.1H.sub.2
 OCH NCalc.:61.12 6.46 5.28Found: 60.97 6.27 5.20
  31
 ##STR132##
  64-67L-tartrate 2910 16051445 13781305 12501225 11001025  755 738  685
 1.45-1.70(m, 9H)1.87(dd, 1H, J=6.6Hz &amp; 10.2Hz)2.75(t, 4H, J=5.3Hz)2.91(t,
  2H, J=6.6Hz)3.03(dd, 1H, J=6.6Hz &amp; 10.2Hz)4.28-4.34(m, 2H)6.95-7.01(m,
 2H)7.25-7.5(m, 6H)7.83(dd, 1H, J= 2.0Hz &amp; 8.2Hz) L-tartrate.1H.sub.2     C
 OCHNalc.:61.74 6.65 5.14Found: 61.90 6.67 5.13
  32
 ##STR133##
  154-160L-tartrate 2920 16051445 13751305 12501225 11021025  910 860
 755 740
  685 1.62(t, 1H, J=6.6Hz)1.8- 1.95(m, 3H)2.86(t, 2H, J=6.6Hz)3.00(dd,
 1H, J=6.6Hz &amp; 10.6Hz)4.2-4.35(m, 2H)6.93-7.0(m, 2H)7.25-7.5(m, 6H),7.83(d
 d, 1H) L-tartrate.1/2H.sub. 2 OCHNCalc.:59.09 5.82 5.99Found: 59.08 5.96
 6.01
  33
 ##STR134##
  109-112L-tartrate 3300 29502890 28101620 14851465 13901320 12601240     1
 1115040  985 875  765 750  700 1.61(t, 1H, J=6.6Hz)1.88(dd, 1H, J=6.6Hz
 &amp; 10.5Hz)1.92-2.02(m, 2H), 2.45(s, 3H)2.62(br.s, 1H),2.75(t, 2H, J=
 7.2Hz)3.00(dd, 1H, J=6.6Hz &amp; 10.5Hz) 4.27(t, 2H, J=5.9Hz)6.94-7.85(m,
 9H) L-tartrate.1/4H.sub.2 OCHNCalc.:60.43 6.02 5.87Found: 60.27 5.97
 5.79
  34
 ##STR135##
  175-179maleate 2920 27801720 16101490 14251375 13151260 12001145
 11101080 1030 995  940 875  840 805  740
  690 1.60(t, 1H, J=6.6Hz)1.85-2.02(m, 3H)2.45(s, 3H)2.73(t, 2H, J=7.3Hz)3
 .00(dd, 1H, J=6.6Hz &amp; 10.2Hz)4.25(m, 2H) 6.65-6.75(m, 2H)7.3-7.5(m,
 5H)7.81(t, 1H) maleateCHNCalc.:62.53 5.58 6.08Found: 62.52 5.83 5.86  35
  ##STR136##
  hygroscopicL-tartrate 3300 29502850 27801610 15951480 14151380 13101225
 10751035  980 810 750 695 1.59(t, 1H, J=6.6Hz)1.90(dd, 1H, J= 6.6Hz &amp;
 10.5Hz)1.95(quintett, 2H, J=7.0Hz)2.46(s, 3H), 2.77(t, 2H, J=7.0Hz)2.97(d
 d, 1H, J=6.6Hz &amp; 10.5Hz) 4.26(t, 2H, J=7.0Hz)6.73-7.45(m, 7H)7.75(d, 1H,
 J=8.6Hz) L-tartrate.1/2H.sub.2 OCHNCalc.:55.87 5.47 5.43Found: 55.65
 5.37 5.51
  36
 ##STR137##
  hygroscopicL-tartrate 2930 16051475 14101220 1030 980  745 1.59(t, 1H,
 J=6.6Hz)1.85-2.1(m, 3H), 2.46(s, 3H),2.76(t, 2H, J=7.3Hz)2.98(dd, 1H,
 J=6.6Hz &amp; 10.6Hz)4.26(t, 2H, J=6.6Hz)7.09(dd, 1H, J=2.0Hz &amp; 8.2Hz)7.16(d,
  1H, J=2.0Hz)7.29-7.5(m, 5H),7.69(d, 1H, J=7.9Hz)  L-tartrate.2H.sub.2   H
N
 OCalc.:49.07 5.32 4.77Found: 49.28 5.17 4.66
   37
 ##STR138##
  117-120fumarate 2920 27901610 15601495 14251380 13401260 12201195
 11601090 1020 990  940 830  750 1.59(t, 1H, J=6.6Hz)1.87(dd, 1H, J=6.6Hz
 &amp; 10.6Hz)1.92(t, 2H, J=6.6Hz)2.43(s, 3H) 2.71(t, 2H, J=6.6Hz)2.98(dd,
 1H, J=6.6Hz &amp; 10.6Hz)3.79(s, 3H) 4.24(t, 2H, J=6.6Hz)6.47(d, 1H,         6
 J=2.6Hz).57(dd, 1H, J=2.6Hz &amp; 8.6Hz)7.31-7.48(m, 5H)7.43(d, 1H, J=8.6Hz) f
 umarate.1/2H.sub.2 OCHNCalc.:62.88 6.12 5.87Found: 63.13 6.22 5.86   38
  ##STR139##
  99.5-105maleate 2920 27801610 15951470 14501430 13701290 12501225
 11301110 1030 980  875 810  760 740  695 1.55-1.61(t, 1H)1.8-2.05(m,
 3H)2.44(s, 3H)2.72(t, 2H, J=7.3Hz)2.97(dd, 1H, J=10.6Hz &amp; 6.6Hz)4.27(m,
 2H) 6.90(d, 1H, J=8.6Hz)7.2-7.6(m, 6H)7.75-7.85(m, 1H) maleateCHNCalc.:59
 .26 5.49 5.76Found: 59.29 5.40 5.75
   39
 ##STR140##
  100-105fumarate 3435 29552790 16851615 14051285 12401130  985 760  745
 705 1.59(m, 1H)1.95(m, 3H)2.45(s, 3H)2.72(t, 2H, J=7.3Hz)2.96(dd, 1H,
 J=6.6Hz &amp; 10.6Hz)4.27(m, 2H)7.10(s, 1H)7.4(m, 5H)7.91(s, 1H) fumarate.1/2
 H.sub.2 OCHNCalc.:55.82 4.88 5.43Found: 55.69 4.94 5.18
   40
 ##STR141##
  110-115L-tartrate 2920 16001500 14601445 14201365 13001255 12051190     1
 1160080 1040 985  860 800  755 720  690 1.56(t, 1H, J=6.6Hz)1.87(dd, 1H,
 J=6.6Hz &amp; 10.6Hz)1.94(quintett, 2H, J=6.6Hz)2.44(s, 3H), 2.73(t, 2H, J=
 6.6Hz)2.96(dd, 1H, J=6.6Hz &amp; 10.6Hz)3.86(s, 3H), 3.89(s, 3H),4.25(t, 2H,
 J=6.6Hz)6.49(s, 1H)7.23-7.48(m, 6H) L-tartrate.2H.sub.2 OCHNCalc.:54.92
 6.38 4.93Found: 55.20 6.23 5.40
  41
 ##STR142##
  75-80fumarate 2930 27901605 15101450 13751300 12401230 11701100 1020
 970  880 820
   760 1.56(t, 1H, J=6.6Hz)1.82(dd, 1H, J=6.6Hz &amp; 10.6Hz)1.94(quintett,
 2H, J=6.6Hz) 2.44(s, 3H)2.72(t, 2H, J=6.6Hz)2.95(dd, 1H, J=6.6Hz &amp;
 10.6Hz)3.82(s, 3H)4.27(t, 2H, J=6.6Hz)6.91-7.42(m, 7H)7.81(dd, 1H,
 J=2.0Hz &amp; 7.9Hz) fumarate.H.sub.2 OCHNCalc.:61.72 6.21 5.76Found: 62.02
 6.41 6.03
  42
 ##STR143##
  88-92maleate 3435 29552790 16151585 14801460 13851235 1030 865  760
 1.64(t, 1H, J=6.6Hz)1.72(br.s, 1H)1.83(dd, 1H, J=6.6Hz &amp; 10.6Hz)1.96(m,
 2H)2.45(s, 3H)2.73(t, 2H, J=7.3Hz)2.98(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.27(m,
 2H)6.98(m, 2H)7.2(m, 2H) 7.46(d, 1H, J=8.6Hz)7.57(d, 1H, J= 2.6Hz)7.81(d,
  1H, J=7.9Hz) maleate.1/4H.sub.2 OCHN Calc.:56.32 4.82 5.47Found: 56.30
 4.81 5.36
  43
 ##STR144##
  68-70fumarate 2940 27951622 16061516 15001429 13821262 12261151
 10261000  832 809  762 1.59(t, 1H, J=6.6Hz)1.84(dd, 1H, J=6.6Hz &amp;        1
 10.6Hz).94(t, 2H, J= 6.6Hz)2.44(s, 3H)2.72(t, 2H, J=6.6Hz)2.96(dd, 1H,
 J=6.6Hz &amp; 10.6Hz)4.26(t, 2H, J=6.6Hz)6.63-7.84(m, 7H) fumarate.H.sub.2   H
N
 OCalc.:58.53 5.32 5.69Found: 58.97 4.91 5.68
  44
 ##STR145##
  161-163fumarate 3435 29602775 16801615 15151415 1225  985
  830 1.49(broad, 1H)1.57(t, 1H, J=6.6Hz)1.84(dd, 1H, J=6.6Hz &amp; 10.6Hz)1.9
 4(m, 2H)2.44(s, 3H)2.71(t, 2H, J=6.6Hz)2.95(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.27
 (m, 2H)6.9(m, 2H)7.1(m, 2H)7.4(m, 2H)7.76(d, 1H, J=7.9Hz) fumarate.1/4H.s
 ub.2 OCHNCalc.:58.19 4.98 5.65Found: 57.96 4.98 5.63
  45
 ##STR146##
  72-80amorphousL-tartrate 2930 28702790 16101597 14801415 13801308
 12251110 10951070 10201008  982 920  890 815
  750 1.55-1.65(m, 1H)1.8-2.0(m, 3H)2.44(s, 3H),2.72(t, 2H, J=6.6Hz)2.95(d
 d, 1H, J=7.3Hz &amp; 10.6Hz) 4.2-4.35(m, 2H), 6.9-7.0(m, 2H)7.37(s, 4H),
 7.76(d, 1H, J=8.6Hz) L-tartrate.5/4H.sub.2 OCHNCalc.: 51.12 5.09
 4.97Found: 51.10 4.92 4.91
  46
 ##STR147##
  160-163fumarate fumarate3440 29602780 16801615 14151230 10751010  985
 815 1.49(broad, 1H)1.59(dd, 1H, J=6.6Hz &amp; 7.3Hz)1.85(dd, 1H, J=7.3Hz &amp;
 10.6Hz)1.93(m, 2H)2.44(s, 3H)2.71(t, 2H, J=7.3Hz)2.95(dd, 1H, J=6.6Hz &amp;
 10.6Hz)4.26(m, 2H)6.9(m, 2H)7.30(d, 2H, J=8.6Hz)7.53(d, 2H, J=8.6Hz)7.76(
 d, 1H, J=8.6Hz) fumarate.1/2H.sub.2 OCHNCalc.:51.40 4.49 5.00Found:
 51.38 4.38 4.99
  47
 ##STR148##
  178-179fumarate fumarate3435 2960 2780 16801610 15151410 1225 985  830
 1.49(broad, 1H)1.56(t, 1H, J=6.6Hz)1.84(dd, 1H, J=6.6Hz &amp; 10.6Hz)1.93(m,
 2H)2.44(s, 3H)2.71(t, 2H, J=7.3Hz)2.95(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.26(m,
 2H)7.1(m, 4H)7.4(m, 2H)7.69(d, 1H, J=8.6Hz) fumarateCHNCalc.:53.84 4.52
 5.23Found: 53.62 4.56 5.14
  48
 ##STR149##
  168-171fumarate fumarate3435 29552780 16801615 14101225  985 820
 1.50(broad, 1H)1.59(t, 1H, J=6.6Hz)1.85(dd, 1H, J=6.6Hz &amp; 10.6Hz)1.93(m,
 2H)2.44(s, 3H)2.71(t, 2H, J=7.3Hz)2.95(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.26(m,
 2H)7.1(m, 2H)7.36(s, 4H)7.69(d, 1H, J=7.9Hz) fumarate.1/4H.sub.2
 OCHNCalc.:51.82 4.44 5.04Found: 51.81 4.37 4.96
  49
 ##STR150##
  168-170fumarate fumarate3435 29602780 16751610 14151225 10701010  985
 815 1.46(broad, 1H)1.59(t, 1H, J=6.6Hz)1.84(dd, 1H, J=7.3Hz &amp; 10.6Hz)1.93
 (m, 2H)2.44(s, 3H)2.71(t, 2H, J=7.3Hz)2.95(dd, J=6.6Hz &amp; 10.6Hz)4.26(m,
 2H)7.1(m, 2H)6.6(m, 2H)7.52(d, 2H, J=8.6Hz)7.69(d, 1H, J=8.6Hz) fumarateCH
N
 alc.:48.34 4.06 4.70Found: 48.41 4.10 4.66
  50
 ##STR151##
  134.5-136maleate 2920 16021442 13701335 13021245 12201120 1020 970  860 7
 50  735  682 1.09(t, 3H, J=7.3Hz)1.62(t, 1H, J=6.6Hz)1.84-2.0(m,
 3H)2.6-2.7(m, 2H)2.76(t, 2H, J=6.6Hz)3.01(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.2-4.
 35(m, 2H)6.9-7.0(m, 2H)7.25-7.5(m, 6H)7.82(dd, 1H, J=2.0Hz &amp; 8.3Hz)
 maleateCHNCalc.:66.36 6.24 6.19Found: 66.17 6.26 6.06
  51
 ##STR152##
  155-157maleate 2920 27901605 14851420 13701310 12501220 11401110
 10801030  990 950  870 840  800 740  685 1.11(t, 3H, J=7.3Hz)1.59(t, 1H,
 J=7.3Hz)1.85-2.05(m, 3H)2.68(q, 2H, J=7.3Hz)2.78(t, 2H, J=7.3Hz) 2.99(dd,
  1H, J=7.3Hz &amp; 10.6Hz)4.24(t, 2H)6.65-6.75(m, 2H)7.25-7.5(m, 5H)7.8-7.85(
 m, 1H) maleateC HNCalc.:63.82 5.78 5.95Found: 63.74 5.72 5.85  52
  ##STR153##
  145-147maleate 2910 28502800 16001550 14701440 14051370 13251300
 12601215 11101065 10251010  980 920  850 800  740 685 1.10(t, 3H,
 J=7.3Hz)1.59(t, 1H, J=6.6Hz)1.85-2.05(m, 3H)2.67(q, 2H, J=7.3Hz) 2.77(t,
 2H, J= 7.3Hz)2.98(dd, 1H, J=6.6Hz &amp; 10.2Hz)4.2-4.3(m, 2H)6.9-7.0(m,
 2H)7.3-7.5(m, 5H)7.76(d, 1H, J=7.9Hz) maleateCHNCalc.:61.66 5.59
 5.75Found: 61.68 5.68 5.71
  53
 ##STR154##
  138-139maleate 2910 28602800 16001585 15451470 14401400 13701320
 13001260 12151120 1025 975  905 800  740 685 1.11(t, 3H, J=7.3Hz)1.59(t,
 1H, J=6.6Hz)1.85-2.0(m, 3H)2.67(q, 2H, J=7.3Hz)2.77(t, 2H, J= 6.6Hz)2.98(
 dd, 1H, J =6.6Hz &amp; 10.6Hz)4.26(t, 2H)7.10(dd, 1H, J=2.0Hz &amp; 8.6Hz)7.16(d,
  1H, J=2.0Hz)7.25-7.5(m, 4H)7.69(d, 1H, J=8.6Hz) maleateCHNCalc.:56.51
 5.12 5.27Found: 56.46 5.15 5.13
  54
 ##STR155##
  97-98maleate 2920 28602800 16101595 14651450 14251370 12851245 12201105
 10301015  975 910  880 810  755  740  690 1.11(t, 3H, J=7.3Hz)1.59(t,
 1H, J=6.6Hz)1.85-2.05(m, 3H)2.67(q, 2H, J=7.3Hz)2.76(t, 2H, J=7.3Hz)  2.9
 7(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.28(t, 2H)6.91(d, 1H, J=9.2Hz)7.2-7.55(m,    7
 6H).80(d, 1H, J=2.6Hz) maleateCHNCalc.:59.46 5.79 5.55Found: 59.63 5.53
 5.53
  55
 ##STR156##
  137-140fumarate 3435 29452790 16901615 14051285 12401130  985 760  745
 700 1.10(t, 3H, J=7.3Hz)1.52(br, 1H)1.57(t, 1H, J= 6.6Hz)1.9(m, 3H)2.66(q
 , 2H, J=7.3Hz)2.76(t, 2H, J=7.3Hz)2.96(dd, 1H, J=6.6Hz &amp; 10.6Hz)4.27(m,
 2H)7.10(s, 1H)7.4(m, 5H)7.91(s, 1H) fumarate.1/2H.sub.2 OCHNCalc.:57.10
 5.08 5.33Found: 57.08 5.06 5.05
  56
 ##STR157##
  61-66maleate 3435 29502790 16901585 15001460 13851200 10501030  865 755
  715 1.10(t, 3H, J=7.3Hz)1.47(br, 1H)1.65(t, 1H, J=7.3Hz)1.83(dd, 1H,
 J=7.3Hz &amp; 10.6Hz)1.95(m, 2H)2.66(q, 2H, J=7.3Hz)2.76(t, 2H, J=7.3Hz)2.98(
 dd, 1H, J=7.3Hz &amp; 10.6Hz)4.28(m, 2H)6.99(m, 2H) 7.2(m, 2H)7.46(d, 1H,
 J=7.9Hz)7.56(d, 1H, J=2.0Hz)7.81(d, 1H, J=7.9Hz) maleate.1/4H.sub.2
 OCHNCalc.:57.10 5.08 5.33Found: 56.95 5.08 5.18
 ##STR158##
 
    
     TEST EXAMPLE 
     The compound of the present invention was capable of promoting the extension of nerve dendrites as observed when it was added to a culture cells (NG108-15). Furthermore, it effectively alleviated the defects concerning directional cognition as observed in a model system by performance after the compound had been given to rats suffering from focal resion in the brain, by injection of AF64A into the basal of their forebrain. These effects of the compound of the present invention have been confirmed by the following tests. 
     (1) Effect of Promoting the Extension of Nerve Dendrites 
     METHOD 
     The effect on the extension of nerve dentrites was examined in accordance with a method reported by Nakagawa et al. [Brain Res., 439, 11-18 (1988)]. A specimen was added to NG108-15 cells which had been cultured in Dulbecco&#39;s minimum essential medium (DMEM) containing 5% fetal calf serum at 37° C. under 10% CO 2 . Three days later, the extension of nerve dendrites was observed under a phasecontrast microscope. 
     RESULTS 
     Among the test compounds, those produced in Examples 1, 4, 14, 18, 19, 21, 33, 36, 39, 45, 54, 62, 66, 69, 73, 89, 90, 95, 96, 98 and 102 showed an effect of promoting the extension of nerve dendrites when examined at a concentration of from 1 to 15 μM. 
     (2) Effect on Morris&#39;s Learning Suppression in Water-Labyrinth in an Animal Model Using Rats Suffering from Focal Resion in the Brain 
     Male rats of Fisher strain weighing 290 to 330 g were used. The focal resion (destruction) in the brain were formed in accordance with a method described in Behav. Brain Res., 19, 119-126 (1988). Training was initiated 1 week after the destruction by using a stainless cylindrical vessel (diameter: 132 cm, depth: 60 cm). On the first day of the training, each test animal was allowed to swim freely for 60 seconds without providing any platforms. From the next day, a labyrinth test was performed for 4 days. On the fifth day, a transfer test was performed for 60 seconds without providing any platform so as to examine whether the animal remembered the location of the platform or not. The test items involved (1) the time required for the animal to reach the platform; (2) the residence time in the quarter circle were the platform had been provided; and (3) the frequency at which the animal crossed the place where the platform had been provided. 
     RESULTS 
     Among the test compounds, those produced in Examples 33 and 45 significantly prevented the aforesaid Morris&#39;s learning suppression in water-labyrinth, when administered continuously in a dose of 10 mg/kg. The improvement was confirmed by intraperitoneal as well as oral administration. 
     FORMULATION EXAMPLE 1 (capsule) 
     10 g of the compound of the present invention, 165 g of corn starch, 164 g of crystalline cellulose and 1 g of magnesium stearate were uniformly mixed together and then filled in hard gelatin capsules. 
     Each capsule comprised the following composition. 
     
         ______________________________________                                    
compound of the invention                                                 
                     10 mg                                                
corn starch         165 mg                                                
crystalline cellulose                                                     
                    164 mg                                                
magnesium stearate   1 mg                                                 
                    340 mg                                                
______________________________________                                    
 
    
     FORMULATION EXAMPLE 2 (tablet) 
     1 g of the compound of the present invention, 150 g of lactose, 14 g of corn starch, 4 g of polyvinylpyrrolidone and 2 g of magnesium stearate were uniformly mixed together and formulated into tablets by direct-tableting method. 
     Each tablet comprised the following composition. 
     
         ______________________________________                                    
compound of invention                                                     
                     10 mg                                                
lactose             150 mg                                                
corn starch          14 mg                                                
polyvinylpyrrolidone (K90)                                                
                     4 mg                                                 
magnesium stearate   2 mg                                                 
                    180 mg                                                
______________________________________                                    
 
    
     FORMULATION EXAMPLE 3 (INJECTION) 
     1 g of the compound of the present invention and 50 g of mannitol were dissolved in purified water in such a manner as to adjust the total volume to 1000 ml. The obtained solution was aseptically filled in glass ampuls. 
     This injection comprised the following composition per ampul. 
     
         ______________________________________                                    
compound of invention   1 mg                                              
mannitol               50 mg                                              
purified water         balance                                            
                        1 ml                                              
______________________________________                                    
 
    
     As described above, the therapeutic agent of the present invention, which promotes the compensatory recovery of the function of a degenerated neuro-circuit, is an epochmaking drug based on a novel conception depending on the plasticity of synapses in the brain nerves and a learning behavior level. The active ingredient of the therapeutic agent of the present invention can be easily and economically synthesized in order to consistently supply commercial products. 
     While the invention has been described in detail and with reference to specific examples thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.