A compound of the following formula (I): ** Formula ** in which: A is a mono or bi-carbocyclic or mono or bi-heterocyclic ring that may contain from 0 to 4 heteroatoms selected from O, N and S； B is -NR2- or - (C>； = O) -； C is - (C>； = O) - or -NR2-； R1 is independently selected from the group consisting of； (1) hydrogen, (2) -On-C 1-6 alkyl where the alkyl is unsubstituted or substituted with one or more substituents independently selected from R 11, (3) -C 3-7 cycloalkyl where the cycloalkyl is unsubstituted or substituted with one or more substituents independently selected from R11, (4) -On-aryl where the aryl is unsubstituted or substituted with one or more substituents independently selected from R11, (5) -S-C1-6 alkyl, where the alkyl is unsubstituted or substituted with one or more substituents independently selected from R11, (6) -S-aryl where the aryl is unsubstituted or substituted with one or more substituents independently selected from R11； (7) -NH-C1-6 alkyl, where the alkyl is unsubstituted or substituted with one or more substituents independently selected from R11 and (8) -NH-aryl, where the aryl is unsubstituted or substituted with one or more substituents independently selected from R11； R2 is independently selected from the group consisting of: (1) hydrogen, (2) halogen selected from chlorine, bromine and fluorine, (3) hydroxyl, (4) -On-C1-6 alkyl, where the alkyl is unsubstituted or substituted with one or more substituents independently selected from R7, (5) -On C3-6 cycloalkyl, where the cycloalkyl is unsubstituted or substituted with one or more substituents independently selected from R7, (6) -On-C2 alkenyl- 4, where the alkenyl is unsubstituted or substituted with one or more substituents independently selected from R7, (7) -On-phenyl or -Onnaphthyl, where the phenyl or naphthyl is unsubstituted or substituted with one or more substituents independently selected from R7 , (8) -On-heterocyclyl, where the heterocyclyl is unsubstituted o
