Patent ID: 7314876

Claim:
A compound of formula (Ib) or a pharmaceutically-acceptable salt thereof, wherein: X is N or CH; R 1 and R 4 are each hydrogen; R 3 is methyl; R 5 is attached to any available carbon atom of the aryl or heteroaryl ring and at each occurrence is independently selected from methyl, fluoro and —OCH 3 , and/or two of the R 5 groups may be taken together to form R 6a is selected from hydrogen or methyl; R 6b is hydrogen; R 6c is selected from hydrogen, —COOH, —C(═O)NH 2 , —C(═O)NHCH 3 , —C(═O)NHCH 2 CH 3 , —C(═O)NHR 7 , where R 7 is alkoxy, —C(═O)NH(CH 2 ) 2 OCH 3 , —C(═O)NH(CH 2 ) 2 OH, —C(═O)NH(CH 2 ) 2 CH 3 , —C(═O)NHCH 2 (CH 2 )CH 3 , and —NHCO 2 CH 2 CH 3 ; and —NHCO 2 CH 2 CH 3 ; and n is 0, 1 or 2.