Patent ID: 6900354

Claim:
A compound of formula I wherein R 1 is (C 1 -C 3 )-alkyl, halogen, halogen-(C 1 -C 6 )-alkyl, cyano, (C 1 -C 6 )-alkoxy or halogen-(C 1 -C 6 )-alkoxy; R 21 , R 22 , R 23 and R 24 are each independently selected from the group consisting of hydrogen and fluoro; R 3 is hydrogen or (C 1 -C 3 )-alkyl; A is selected from R 4 is hydrogen or (C 1 -C 3 )-alkyl; R 5 , R 6 and R 7 are each independently hydrogen or (C 1 -C 6 )-alkyl; and n is 1, 2 or 3; wherein when n is 2 or 3, each R 1 is the same or different; or a pharmaceutically acceptable salt thereof.