Patent ID: 7964594

Claim:
A compound of formula I, wherein R 1 is hydrogen or C 1-7 -alkyl; R 2 is hydrogen or C 1-7 -alkyl; or R 1 and R 2 together with the C atom they are attached to form a C 3-7 -cycloalkyl ring; R 3 is C 1-7 -alkyl or C 3-7 -cycloalkyl; or R 2 and R 3 together with the C atoms they are attached to form a C 3-7 -cycloalkyl or a 3- to 7-membered O-heterocyclyl ring; R 4 is selected from the group consisting of hydrogen, C 1-7 -alkyl, halogen, cyano and C 1-7 -alkoxy; and R 5 is selected from the group consisting of: i) aryl, unsubstituted or substituted by one, two or three groups selected from the group consisting of C 1-7 -alkyl, halogen, halogen-C 1-7 -alkyl, C 1-7 -alkoxy, halogen-C 1-7 -alkoxy, cyano, hydroxy-C 1-7 -alkyl, oxo and phenyl, ii) heteroaryl, unsubstituted or substituted by one, two or three groups selected from the group consisting of C 1-7 -alkyl, halogen, halogen-C 1-7 -alkyl, C 1-7 -alkoxy, halogen-C 1-7 -alkoxy, cyano, hydroxy-C 1-7 -alkyl, oxo and phenyl, iii) C 1-7 -alkyl, unsubstituted or substituted by one, two, three, four or five groups individually selected from the group consisting of halogen, halogen-C 1-7 -alkyl, C 1-7 -alkoxy, halogen-C 1-7 -alkoxy, cyano and hydroxy-C 1-7 -alkyl, iv) a C 3-7 -cycloalkyl ring, unsubstituted or substituted by one, two or three groups selected from the group consisting of C 1-7 -alkyl, halogen, halogen-C 1-7 -alkyl, C 1-7 -alkoxy, halogen-C 1-7 -alkoxy, cyano and hydroxy-C 1-7 -alkyl, and v) 3- to 7-membered O-heterocyclyl ring, unsubstituted or substituted by one, two or three groups selected from the group consisting of C 1-7 -alkyl, halogen, halogen-C 1-7 -alkyl, C 1-7 -alkoxy, halogen-C 1-7 -alkoxy, cyano and hydroxy-C 1-7 -alkyl, or a pharmaceutically acceptable salt thereof.