Patent ID: 6916818

Claim:
A compound according to Formula I and a salt thereof: wherein: R is a group of Formula II; one of A, B, D, or E is a N atom, the remainder being CH groups; R 1 is SO 2 Ar; R 2 , and R 4 are independently selected from the group consisting of H and alkyl; — represents a single or double bond, with the proviso that there is only one double bond in the ring at a time; Z is N; Ar is an optionally substituted 5-10 membered mono or bi-cyclic aromatic group which can contain up to 2 heteroatoms. selected from O, N, and S, wherein the optional substituents are independently selected from 1-4 members of the group consisting of halo, hydroxy, alkyl, alkoxy, thioalkyl, trifluoromethyl and trifluoromethoxy.