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• W2093746190 abstract "1-[(6-Chloro-3-pyridinyl)methyl]-2-imidazolidine (1), the N-desnitro metabolite of the major insecticide imidacloprid, is known to have similar potency to that of (−)-nicotine as an inhibitor of [3H](−)-nicotine binding at the rat recombinant α4β2 neuronal nicotinic acetylcholine receptor (nAChR); IC50 values in the present study are 3.8 nM for (−)-nicotine, 6.0 nM for 1, and 155 nM for imidacloprid. Synthesis of new analogues of 1, modified only in the heterocyclic moiety (five-, six-, or seven-membered rings with NH, S, O, and CH2 substituents), gave compounds varying from 4-fold higher potency (2-iminothiazole analogue 10) to >6000-fold less active than (−)-nicotine. Other potent N-[(6-chloro-3-pyridinyl)methyl] compounds are those in which the heterocyclic imine is replaced with pyrrolidine (19) (IC50 9 nM) or trimethylammonium (22) (IC50 18 nM). A novel conversion of (−)-nicotine to its 6-chloro analogue increased the potency 2-fold. These 6-chloro-3-pyridinyl compounds are of interest as novel nAChR probes and potential metabolites of candidate insecticides." @default.
• W2093746190 created "2016-06-24" @default.
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• W2093746190 date "1999-05-27" @default.
• W2093746190 modified "2023-09-26" @default.
• W2093746190 title "Novel and Potent 6-Chloro-3-pyridinyl Ligands for the α4β2 Neuronal Nicotinic Acetylcholine Receptor" @default.
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• W2093746190 doi "https://doi.org/10.1021/jm980721x" @default.
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