Patent ID: 7691876

Claim:
A compound of formula (I): or a pharmaceutically acceptable salt thereof, wherein: R 1 , R 2 , R 4 and R 5 are independently from each other hydrogen, C 1 -C 6 alkyl, C 1 -C 6 alkoxy or halogen; R 3 is C 1 -C 6 alkyl, C 1 -C 6 alkoxy, aryloxy, C 3 -C 7 cycloalkyl or pentafluorosulphuranyl; R 6 is hydrogen or C 1 -C 6 alkyl; R 7 is hydrogen, C 1 -C 6 alkyl, hydroxy or halogen; R 8 is selected from the group consisting of: (1) C 1 -C 6 alkyl, (2) C 2 -C 6 alkenyl, (3) halogen-C 1 -C 6 alkyl, (4) phenyl optionally substituted by one to three substituents independently selected from the group consisting of hydrogen, halogen, C 1 -C 6 alkyl, halogen-C 1 -C 6 alkyl and halogen-C 1 -C 6 alkoxy, (5) —OR 10 , wherein R 10 is C 1 -C 6 alkyl or phenyl wherein said phenyl is optionally substituted by one to three substituents independently selected from the group consisting of hydrogen, halogen, C 1 -C 6 alkyl, halogen-C 1 -C 6 alkyl and halogen-C 1 -C 6 alkoxy, (6) —NR 11 R 12 , wherein R 11 and R 12 independently from each other are selected from the group consisting of hydrogen, C 1 -C 6 alkyl, and phenyl wherein said phenyl is optionally substituted by one to three substituents independently selected from the group consisting of hydrogen, halogen, C 1 -C 6 alkyl, halogen-C 1 -C 6 alkyl and halogen-C 1 -C 6 alkoxy, and (7) —C(O)—OR 13 , wherein R 13 is hydrogen or C 1 -C 6 alkyl; R 9 is 1H-pyrrolo[2,3-c]pyridin-7-yl which is unsubstituted or substituted by one or two substituents independently selected from the group consisting of halogen, C 1 -C 6 alkyl, halogen-C 1 -C 6 alkyl and C(O)OCH 3 ; and n is 1, 2 or 3.