Patent ID: 7060698

Claim:
A compound of formula wherein R 1 is, lower alkoxy, halogen or —NR′R″; n is 1 or 2; R′ and R″ are each independently hydrogen or lower alkyl; R 2 is hydrogen, lower alkyl, —(CH 2 ) m -cycloalkyl, —(CH 2 ) m -phenyl or —(CH 2 ) m —O-lower alkyl; m is 0, 1 or 2; R 3 is lower alkyl, —(CH 2 ) m —C(O)O-lower alkyl, cycloalkyl or —(CH 2 ) m -phenyl, which is unsubstituted or substituted by one or two substituents, selected from the group consisting of halogen or lower alkyl; R 4 is —(CH 2 ) o -phenyl, which is unsubstituted or substituted by one or two substituents selected from the group consisting of halogen, trifluoromethyl, —NR′R″, nitro and —SO 2 NH 2 , or is -cycloalkyl, unsubstituted or substituted by phenyl, or is —(CR′R″) o -heterocyclyl, selected from the group consisting of tetrahydropyran-4-yl, pyridin-3-yl, indol-3-yl optionally substituted by halogen or lower alkoxy, thiophen-2-yl, furan-2-yl, benzoimidazol-2-yl, 2-oxo-tetrahydrofuran, and benzo[1,3]dioxol-5-yl or is —NH-pyridin-2-yl optionally substituted by nitro, 1-benzyl-piperidin-4-yl, -tetrahydro-naphthalen-1-yl, —CHR′-naphthalen-2-yl, -fluoren-9-yl, —(CH 2 ) o —S-lower alkyl, —(CH 2 ) o —S-benzyl, —(CH 2 ) o —C(O)NH 2 , —(CH 2 ) o NR′R″, —CH[C(O)NH 2 ]—(CH 2 ) o -phenyl, —(CH 2 ) o —CF 3 , or —(CH 2 ) o —CR′R″—CH 2 —NR′R″; and o is 1 or 2; or a pharmaceutically suitable acid addition salt thereof.