Patent ID: 7754750

Claim:
A compound of the formula II or a pharmaceutically acceptable salt or an in vivo hydrolysable ester thereof wherein each of G1, G2 and G4 is a monocyclic ring structure comprising each of up to 7 ring atoms independently selected from cycloalkyl, aryl, heterocycloalkyl or heteroaryl, with each ring structure being independently optionally substituted by one or two substituents independently selected from halogen, hydroxy, haloalkoxy, amino, N-alkylamino, N,N-dialkylamino, cyano, nitro, alkyl, alkoxy, alkyl sulfone, haloalkyl sulfone, alkylcarbamate, alkylamide, wherein any alkyl radical within any substituent may itself be optionally substituted with one or more groups selected from halogen, hydroxy, amino, N-alkylamino, N,N-dialkylamino, cyano, nitro, alkoxy, haloalkoxy, aryloxy, heteroaryloxy, carbamate; Z is SO 2 ; each of B and F is independently selected from a direct bond, O, (C1-6)alkyl, (C1-6)heteroalkyl, alkynyl, CO, NCO, CON, NH, S; R2 is selected from H, alkyl, hydroxyalkyl, alkoxyalkyl, aryloxy alkyl, aminoalkyl, (N-alkylamino)alkyl, (N,N-dialkylamino)alkyl, amidoalkyl, thioalkyl cycloalkyl-alkyl, alkyl-cycloalkyl, arylalkyl, alkylaryl, alkyl-heteroaryl, heteroalkyl, heterocycloalkyl-alkyl, alkyl-heterocycloalkyl, heteroaryl-alkyl, heteroalkyl-aryl; R3 and R4 are independently selected from H or (C1-3)alkyl; Optionally R2 and R3 may join to form a ring comprising up to 7 ring atoms, or R2 and R4 may join to form a ring comprising up to 7 ring atoms, or R3 and R4 may join to form a ring comprising up to 7 ring atoms.