Patent ID: 8461160

Claim:
A compound of the formula wherein X is CH or N; R 1 is selected from the group consisting of hydrogen, C 1-7 -alkyl, and benzyl; R 2 is hydrogen or C 1-7 -alkyl; R 3 is hydrogen or C 1-7 -alkyl; or R 2 and R 3 , together with the C atom to which they are attached, form a C 3-7 -cycloalkyl ring; R 4 is C 1-7 -alkyl or C 3-7 -cycloalkyl; R 5 is selected from the group consisting of hydrogen, C 1-7 -alkyl, halogen, cyano and C 1-7 -alkoxy; R 6 is aryl or heteroaryl, said aryl or heteroaryl being 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; and R 7 is hydrogen; or a pharmaceutically acceptable salt thereof.