Cd. Cox et al., Synthesis of epibatidine isomers: endo-5-and 6-(6 '-chloro-3 '-pyridyl-2-azabicyclo[2.2.1]heptanes, J CHEM S P1, (19), 2001, pp. 2372-2379
Synthesis of the title;compounds is described; detailed NMR data are provid
ed in support of the proposed stereostructures. The 5- and 6-endo-compounds
show high selectivity for alpha4 beta2 versus alpha7 nAChR subtypes; in co
ntrast, the exo-stereoisomers show comparatively weak affinity at both subt
ypes.