FUSED BICYCLOHETEROCYCLE SUBSTITUTED QUINUCLIDINE DERIVATIVES

摘要

Compounds of formula (I) wherein n is 0, 1, or 2; A is N or N+-O-; X is O, S , - NH-, and -N-alkyl-; Ar1 is a 6-membered aromatic ring; and Ar2 is a fused bicycloheterocycle. The compounds are useful in treating conditions or disorders prevented by or ameliorated by .alpha.7 nAChR ligands. Also disclosed are pharmaceutical compositions having compounds of formula (I) an d methods for using such compounds and compositions.