The biochemical and behavioral properties of (-)-nicotine, isoarecolon
e, (+/-)-epibatidine and the novel nAChR ligands ABT-418, ABT-089, A-8
5380, SIB-1663, SIB-1765F, SIB-1508Y, RJR-2403 and GTS-21 are summariz
ed. The potential therapeutic of these compounds is discussed in view
of their effect in several animal models of CNS disorders.