Antiviral activity of N-phosphorylated amides, thioamides, and their salts
The N-(O,O-dimethylphosphoryl)benzamide (I) was obtained according to [4]; N-(O-methylS-methylphosphoryl)acetamide (acephate) (II) was obtained according to [6], and N-(O,O-diisopropylthiophosphoryl)thiobenzamide (III) (benztriamiph) was obtained according to [7]. The synthesis of N-(O,O-diisopropylthiophosphoryl)thioacetamide (IV), the sodium salt of N-(O,O-dimethylphosphoryl)benzamide (V), and the sodium salt of N-(O,O-diethylphosphoryl)thiobenzamide (VI) is described below.
Diorganotin(IV) complexes of N -mono-, di- and tri-chloroacetyl, N ′, N ″-bis(isopropyl) phosphoric triamide
Abstract Three new carbacylamidophosphates with formula CHnCl3−nC(O)NHP(O)(NHCH(CH3)2)2 (n = 2 (1); n = 1 (2); n = 0 (3)) and their organotin compounds with formula (1)SnCl2Me2(μ-1)SnCl2Me2 (4), SnCl2Me2(2)2·C6H5CH3 (5) and [SnCl2Me2(3)]n (6) were synthesized and characterized by elemental, IR and NMR spectra analyses. The spectroscopic properties of complexes were compared with those corresponding ligands. The crystal structures of complexes were determined by X-ray crystallography, which reveals that complex 4 is binuclear structure with two non-equivalent Sn atoms. One adopts a distorted trans(C,C) cis(OP,OP) cis(Cl,Cl) octahedral configuration, while the other adopts a distorted trigonal bipyramidal geometry composed of two methyl groups, two chlorine atoms and carbonyl group. Molecule 5 is centrosymmetric with two OP, disordered chlorine and methyl groups in trans positions. Toluene molecules are located in the interlayer spaces of 5. In compound 6, bonding via both PO and CO functionalities forms 1D infinite chain structures along b axis. The Sn–OP bond length in 6 is significantly longer than the same distance in 4 and 5, while the O P and Sn–Cl bonds are shorter. The bond lengths in these complexes were compared with those of N-benzoyl carbacylamidophosphates.
MODELES DE BIOTINE ACTIVEE PAR PHOSPHORYLATION TRANSFERT DE PHOSPHORYLE
Abstract This work describes the synthesis of the first two O-phosphobiotin models, which mimic the activated form of biotin through a phosphorylation process. In addition, pyrophosphate bond formation is considered through this kind of O-phosphorylated intermediate. Reversible interconversion of the S- and N-phosphorylated urea structures is depicted and implications of the activation process are presented.