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Synthesis, nicotinic acetylcholine receptor binding, and pharmacological properties of 3'-(substituted phenyl)deschloroepibatidine analogs.


ABSTRACT: A series of 3'-(substituted phenyl)deschloroepibatidine analogs (5a-j) were synthesized. The alpha4beta2( *) and alpha7 nicotinic acetylcholine receptor (nAChR) binding properties and functional activity in the tail-flick, hot-plate, locomotor, and body temperature tests in mice of 5a-j were compared to those of the nAChR agonist, nicotine (1), epibatidine (4), and deschloroepibatidine (13), the partial agonist, varenicline (3), and the antagonist 2'-fluoro-3'-(substituted phenyl)deschloroepibatidine analogs (7a-j). Unlike epibatidine and deschloroepibatidine, which are potent agonists in the tail-flick test, 5a-k show no or very low antinociceptive activity in the tail-flick or hot-plate test. However, they are potent antagonists in nicotine-induced antinociception in the tail-flick test, but weaker than the corresponding 2'-fluoro-3'-(substituted phenyl)deschloroepibatidines.

SUBMITTER: Ivy Carroll F 

PROVIDER: S-EPMC2374917 | BioStudies | 2008-01-01

REPOSITORIES: biostudies

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