Patent ID: 7956190

Claim:
A compound of formula I, wherein R 1 is selected from the group consisting of: —R 3 , —O—R 3 and —NR—R 3 ; R 2 is —X—R 4 ; R 3 is selected from the group consisting of: a) —(CH 2 ) n —(O) m -phenyl, wherein the phenyl is optionally substituted one to three times with the substitutents being each independently selected from the group consisting of: alkyl, —O-alkyl, halogen, cyano, —N(alkyl) 2 , trifluoromethyl, and trifluoromethoxy; with the proviso that, if R 1 is O—R 3 or —NR—R 3 and n is 0, m is also 0; b) alkyl, wherein the alkyl is optionally substituted one to three times with the substituents being each independently selected from the group consisting of: —O-alkyl and halogen; c) alkenyl; d) heteroaryl; and e) (C 3 -C 6 ) cycloalkyl; R 4 is a) phenyl, wherein the phenyl is optionally substituted one to three times with the substitutents being each independently selected from the group consisting of: halogen, alkyl, —O-alkyl, —N(alkyl) 2 , trifluoromethyl and trifluoromethoxy; or b) pyridyl; X is (C 1 -C 3 )alkylene, wherein the alkylene is optionally substituted once or twice with the substitutents being each independently selected from the group consisting of: hydroxy, alkyl and halogen; R is hydrogen or (C 1 -C 3 )alkyl; m is 0 or 1; and n is 0, 1 or 2; or a pharmaceutically acceptable salt thereof.