Rádl S, Hafner W, Budesínsky M, Hejnová L, Krejcí I
Research Institute of Pharmacy and Biochemistry, Prague, Czech Republic.
Arch Pharm (Weinheim). 2000 Jun;333(6):167-74. doi: 10.1002/1521-4184(20006)333:6<167::aid-ardp167>3.0.co;2-8.
A series of epibatidine analogs and their positional isomers bearing an 8-azabicyclo[3.2.1]octane moiety is described. Also some of their simplified analogs bearing a 3-piperidine moiety are reported. Their receptor binding profiles (5-HT1A, 5-HT1B, M1, M2, neuronal nicotinic receptor) and analgesic activity (hot plate, acetic acid induced writhing) have been studied. Some of the compounds, especially those containing an 8-azabicyclo[3.2.1]oct-2-ene moiety possess high afinity for the nicotinic cholinergic receptor. The most analgesically active compounds are also highly toxic. Optimized structures (PM3-MOPAC, Alchemy 2000, Tripos Inc.) of compounds 1-9 were compared with that of epibatidine.