Patent ID: 8455501

Claim:
A compound according to formula (I), wherein R 1 is selected from the group consisting of C 1-7 -alkyl, C 3-7 -cycloalkyl, C 3-7 -cycloalkyl-C 1-7 -alkyl, hydroxy-C 1-7 -alkyl, C 1-7 -alkoxy-C 1-7 -alkyl, and halogen-C 1-7 -alkyl; R 2 is selected from the group consisting of C 3-7 -cycloalkyl, C 4-7 -cycloalkenyl; and R 3 is selected from the group consisting of phenyl, wherein phenyl is unsubstituted or substituted by one or two groups selected from the group consisting of C 1-7 -alkyl, hydroxy, C 1-7 -alkoxy, cyano, C 3-7 -cycloalkyl, C 3-7 -cycloalkyl-C 1-7 -alkyl, halogen and halogen-C 1-7 -alkyl, and heteroaryl, wherein heteroaryl is unsubstituted or substituted by one or two groups selected from the group consisting of C 1-7 -alkyl, hydroxy, C 1-7 -alkoxy, cyano, C 3-7 -cycloalkyl, C 3-7 -cycloalkyl-C 1-7 -alkyl, halogen and halogen-C 1-7 -alkyl; or a pharmaceutically acceptable salt thereof.