Patent ID: 7598285

Claim:
A compound represented by formula I: or a pharmaceutically acceptable salt or solvate thereof, wherein: each R 1 is H or is selected from the group consisting of: (a) halo, OH, CO 2 R 4 , CN, SO p R 5 or NO 2 , (b) C 1-6 alkyl or OC 1-6 alkyl optionally substituted with: (1) 1-5 halo groups up to a perhaloalkyl group; (2) CO 2 R 4 ; (3) phenyl optionally substituted as follows: (i) 1-5 halo groups, (ii) 1 CO 2 R 4 , CN, S(O) p R 5 , NO 2 or C(O)NR 6 R 7 group, (iii) 1-2 C 1-10 alkyl or alkoxy groups, each optionally substituted with: 1-5 halo, up to perhaloalkyl, and 1-2 OH or CO 2 R 4 groups; each R 2 is selected from R 1 as defined above, or 2 R 2 groups can be taken together to represent a fused 5-6 membered cyclic structure containing 1-2 oxygen atoms, and 1-2 carbon atoms each of which is optionally substituted with 1-2 F atoms; R 3 is H or C 1-3 alkyl; R 4 is H, C 1-6 alkyl, and R 5 represents a member selected from the group consisting of: C 1-10 alkyl, Aryl or Ar—C 1-10 alkyl; R 6 and R 7 each independently represent H or C 1-3 alkyl, and p is 0, 1 or 2 group.