| abstract |
Compounds of formula (I); wherein A is N or N+-O-; n is 0, 1, or 2; Y is O, S, -NH-, and -N-alkyl-; Ar1 is both 6-membered aromatic rings; Ar2 is 5- or 6-membered aromatic rings with a -NR8R9 group, as defined herein. 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) and methods for using such compounds and compositions. |