Patent ID: 7037932

Claim:
A compound of formula I: wherein A is selected from —O— and —S—; X is selected from phenyl optionally substituted with up to 5 substituents selected from halo, C 1 –C 4 alkyl and C 1 –C 4 alkoxy; Y is selected from benzothienyl, indolyl and benzofuranyl, optionally substituted with up to 5 substituents selected from halo, C 1 –C 4 alkyl, C 1 –C 4 alkoxy, nitro, acetyl and cyano; and when Y is indolyl it may be substituted or further substituted by an N-substituent selected from C 1 –C 4 alkyl; R 1 and R 2 are each independently H or C 1 –C 4 alkyl; and pharmaceutically acceptable salts thereof.