| abstract |
This invention relates to a compound of the formula: n n nor a pharmaceutically acceptable salt thereof, wherein A and R 1 are each an optionally substituted 5 to 6-membered heteroaryl, wherein the heteroaryl is optionally fused to a carbocyclic ring or 5 to 6-heteroaryl; R 2 is NH 2 ; R 3 and R 4 are each hydrogen, halo, (C 1 -C 4 )alkyl optionally substituted with halo and the like; and X 1 to X 4 are each hydrogen, halo, hydroxy, (C 1 -C 4 )alkyl optionally substituted with halo and the like. These compounds have COX-2 inhibiting activity and thus useful for treating or preventing inflammation or other COX-2 related diseases. |