Conclusions
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1.
A study was made of the kinetics of the inhibition of acetylcholinesterase and butyrylcholinesterase by a number of O-alkyl S-(β-methylmercaptoethyl) phenylthiophos-phonates of the sulfide and sulfonium type.
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2.
The O-alkyl S-(S-methylmercaptoethyl) phenylthiophosphonates which are irreversible chalinesterase inhibitors, acquire the properties of inhibitors with a combined type of action when the alkyl radical of the alkoxyl group is increased from pentyl to hexyl.
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3.
The sulfonium O-pentyl and O-hexyl thiophosphonates inhibit only butyrylcholinesterase by the combined mechanism, while irreversible inhibition of the enzyme occurs exclusively in the case of acetylcholinesterase.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2573–2576, November, 1975.
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Bekanov, M.K., Brestkin, A.P., Berkhamov, M.K. et al. Reaction of o-alkyl s-(β-methylmercaptoethyl)phenylthio-phosphonates and their methiodides with cholinesterases. Russ Chem Bull 24, 2459–2461 (1975). https://doi.org/10.1007/BF00921666
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DOI: https://doi.org/10.1007/BF00921666