Patent ID: 6881844

Claim:
A compound of formula I: wherein R 1 is halo, nitro, amino, cyano, methyl, trifluoromethyl, hydroxy, methoxy, trifluoromethoxy, methylthio, methylsulfinyl, or methylsulfonyl; R 2 is lower alkyl having from 2 to 5 carbon atoms or —CH 2 —R 4 wherein R 4 is cycloalkyl having from 3 to 6 carbon atoms; and R 3 is an unsubstituted or mono-substituted five- or six-membered heteroaromatic ring connected by a ring carbon atom to the amine group shown, which five- or six-membered heteroaromatic ring contains from 1 to 3 heteroatoms selected from sulfur, oxygen or nitrogen, with one heteroatom being nitrogen which is adjacent to the connecting ring carbon atom; said mono-substituted heteroaromatic ring being mono-substituted at a position on a ring carbon atom other than adjacent to said connecting carbon atom with a substituent selected from the group consisting of methyl, trifluoromethyl, chloro, bromo, nitro, cyano, wherein n is 0 or 1; R 5 is hydrogen or lower alkyl; or a pharmaceutically acceptable salt thereof.