V. I. Fetisov

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and the mixture was boiled for 2.5 h. The alcohol was distilled off, and the residue was treated with hot chloroform (5 • i0 ml). The insoluble material was separated by filtration, and the filtrate was concentrated to 5 ml and chromatographed on alumina (eluted with chloroform). The first fraction was evaporated, and the residue was crystallized from(More)
Previously we have demonstrated that N-poly(fluoroacyl1-aminoalkylphosphonates) inhibit acetylcholinesterases (ACE) and butyrylcholinesterases (BuCE), the anticholinesterase activity being dependent on the hydrophobicity of the substituents [1 3]. We believed that introducing perfluoroalkyl substituents into the a-position of alkylphosphonates and(More)
The dependence of antiesteratic activity on the structure of insecticides (RO)2P(O)SCH(COOEt)SP(O)(OR)2 (I) and (RO)2P(O)SCH(COOEt)OP(S)(OR)2 (II) was examined. Nonlinear regression equations (parabolic and bilinear) "hydrophobicity-antiesteratic activity" were derived. Basing on the studies of the relationships between hydrophobicity and individual(More)
The interaction of potential pesticides, O,O-dialkyl S-ethoxycarbonylbromomethylthiophosphates (RO)2P(O)SCH(Br)COOC2H5 (R = Et, i-Pr, n-Pr, n-Bu, n-Am, or n-Hx) with the esterases of warm-blooded animals [acetylcholinesterase (ACE), butyryl cholinesterase (BCE), and carboxyl esterase (CE)] was studied. The acute toxicities of these compounds for mice were(More)
The substances studied were dissolved in acetone; the required amount of the obtained solutions was then added to the potato sucrose agar heated to 50°ë . The final acetone concentration in the substance-containing and control media was 10 ml/l. The prepared agar was poured into Petri dishes with an internal diameter of 9 cm (15 ml per dish) and cooled.(More)