Patent ID: 7696243

Claim:
A compound of the Formula I or a pharmaceutically acceptable salt thereof; wherein: A and C are hydrogen; M is selected from the group consisting of optionally substituted C 1 -C 7 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl and —(CH 2 )q-B; wherein B is selected from the group comprising optionally substituted carbocyclic aryl, optionally substituted heteroalicyclic having from 3 to 8 ring atoms and at least one N, O or S ring atom and a heteroaromatic group having a single ring with 5 or 6 ring atoms and at least one N, O or S ring atom; wherein q in “—(CH 2 )q-B” is selected from 1, 2, 3 and 4; U is (CH 2 ) p wherein p is selected from 0, 1 and 2; and V and Q are each independently hydrogen, optionally substituted alkyl, or C 3 -C 6 cycloalkyl; with at least one of V and Q being other than hydrogen.