Patent ID: 7176316

Claim:
A compound of formula wherein R 1 is lower alkyl, —(CH 2 ) n -aryl, unsubstituted or substituted by one or two substituents selected from the group consisting of lower alkyl, lower alkoxy, —OCF 3 , halogen, —NR′R″ and trifluoromethyl; R 2 is lower alkyl, —(CH 2 ) n -aryl, unsubstituted or substituted by one or two substituents selected from the group consisting of lower alkyl, lower alkoxy, halogen, trifluoromethyl, nitro, cyano, —NR′R″, and hydroxy; R 3 is aryl, unsubstituted or substituted by halogen or lower alkyl; R 4 is hydrogen or hydroxy; A is —S(O) 2 — or —C(O)—; X and Y are each —CH 2 —; R′ and R″ are each independently selected from the group consisting of hydrogen, lower alkyl and —C(O)-lower alkyl; n is 0, 1 or 2; or a pharmaceutically acceptable acid addition salt thereof.