Patent ID: 7381739

Claim:
A compound of the formula: or a pharmaceutically acceptable salt thereof, wherein n is 2; p is 1 or 2; R 1 is aryl; R 2 is a heterocyclyl; R 3 is hydrogen or alkyl; and each R 4 is independently hydrogen, hydroxy, cyano, alkyl, alkoxy, thioalkyl, alkylthio, halo, haloalkyl, hydroxyalkyl, nitro, alkoxycarbonyl, alkylcarbonyl, alkylsulfonyl, arylsulfonyl, haloalkylsulfonyl, amino, alkylamino, dialkylamino, alkyl(aryl)amino, alkylaminocarbonyl, alkylcarbonylamino, alkylcarbonyl(alkylamino), alkylaminosulfonyl, alkylsulfonylamino or methylenedioxy.