Abstract
This paper discusses the relation between chemical structure and inactivation of the enzyme acetylcholinesterase (AChE) by organophosphorus esters, in terms of reactivity and steric effects. The discussion is centered in organophosphorus esters of the type (R) (R′) P(O) X, where X is a readily displaceable group and R and R′ are various combinations of alkyl, alkoxy, alkylthio, and amido moieties. Specific examples illustrating the effect of AChE inhibition on the selective toxicity of organophosphorus esters for insects and mammals are also presented.
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Selected References
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- ALDRIDGE W. N., DAVISON A. N. The inhibition of erythrocyte cholinesterase by tri-esters of phosphoric acid. I. Diethyl p nitrophenyl phosphate (E600) and analogues. Biochem J. 1952 Apr;51(1):62–70. doi: 10.1042/bj0510062. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Boter H. L., van Dijk C. Stereospecificity of hydrolytic enzymes on reaction with asymmetric organophosphorus compounds. 3. The inhibition of acetylcholinesterase and butyrylcholinesterase by enantiomeric forms of sarin. Biochem Pharmacol. 1969 Oct;18(10):2403–2407. doi: 10.1016/0006-2952(69)90355-4. [DOI] [PubMed] [Google Scholar]
- Chiu Y. C., Dauterman W. C. The affinity and phosphorylation constants of the optical isomers of O,O-diethyl malaoxon and the geometric isomers of phosdrin with acetylcholinesterase. Biochem Pharmacol. 1969 Feb;18(2):359–364. doi: 10.1016/0006-2952(69)90213-5. [DOI] [PubMed] [Google Scholar]
- Fukuto T. R., Metcalf R. L. Reactivity of some 2-p-nitrophenoxy-1,3,2-dioxaphospholane 2-oxides and -dioxaphosphorinane 2-oxides. J Med Chem. 1965 Nov;8(6):759–762. doi: 10.1021/jm00330a007. [DOI] [PubMed] [Google Scholar]
- Hansch C., Deutsch E. W. The use of substituent constants in the study of structure-activity relationships in cholinesterase inhibitors. Biochim Biophys Acta. 1966 Sep 5;126(1):117–128. doi: 10.1016/0926-6585(66)90042-2. [DOI] [PubMed] [Google Scholar]
- KRUPKA R. M. ACETYLCHOLINESTERASE. Can J Biochem. 1964 May;42:677–693. doi: 10.1139/o64-082. [DOI] [PubMed] [Google Scholar]
- MAIN A. R. AFFINITY AND PHOSPHORYLATION CONSTANTS FOR THE INHIBITION OF ESTERASES BY ORGANOPHOSPHATES. Science. 1964 May 22;144(3621):992–993. doi: 10.1126/science.144.3621.992. [DOI] [PubMed] [Google Scholar]
- Main A. R., Iverson F. Measurement of the affinity and phosphorylation constants governing irreversible inhibition of cholinesterases by di-isopropyl phosphorofluoridate. Biochem J. 1966 Aug;100(2):525–531. doi: 10.1042/bj1000525. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Oooms A. J., Boter H. L. Sterospecificity of hydrolytic enzymes in their reaction with optically active organophosphorus compounds. I. The reaction of cholinesterases and paraoxonase with S-alkyl P-nitrophenyl methylphosphonothiolates. Biochem Pharmacol. 1965 Dec;14(12):1839–1845. doi: 10.1016/0006-2952(65)90274-1. [DOI] [PubMed] [Google Scholar]
- Quistad G. B., Fukuto T. R., Metcalf R. L. Insecticidal, anticholinesterase, and hydrolytic properties of phosphoramidothiolates. J Agric Food Chem. 1970 Mar-Apr;18(2):189–194. doi: 10.1021/jf60168a019. [DOI] [PubMed] [Google Scholar]