A compound of the formula (I): ** Formula ** wherein: 5 Y and Z are each independently selected from the group consisting of: a) an aryl group optionally substituted with 1, 2 or 3 R6 ； b) a heteroaryl group optionally substituted with 1, 2 or 3 R6； and c) a substituent independently selected from the group consisting of hydrogen, C2-C10 alkenyl, C1-C10 alkoxy, C1-C10 alkoxy-C1-C10 alkyl, C1-C10 alkoxy-carbonyl-C1-C10 alkyl alkyl C1-C10, C2-C10 alkynyl, aryl-C1-C10 alkyl, C3-C10 cycloalkyl, C3-C10 cycloalkyl-C1-C10 alkyl, C1-C10 haloalkyl, C1-C10 hydroxyalkylene, oxo, heterocycloalkyl, heterocycloalkyl-C1-alkyl C10, C1-C10 alkylcarbonyl, arylcarbonyl, heteroarylcarbonyl C1-C10 alkyl sulfonyl, arylsulfonyl, heteroarylsulfonyl, (NRARB) C1-C10 alkylene, (NRARB) carbonyl C1-C10 alkylene, (NRARB) sulfonyl and (NRARB ) sulfonyl-C1-C10 alkylene； R1, R2 and R3 are each independently selected from the group consisting of hydrogen, halogen, C2-C10 alkenyl, C1-C10 alkoxy, C1-C10 alkoxycarbonyl, C1-C10 alkyl, C3-C10 cycloalkyl, C2-C10 alkynyl, cyano, C1-C10 haloalkoxy, C1-C10 haloalkyl, hydroxyl, C1-C10 hydroxyalkylene, nitro, NRARB, NRARB-C1-C10 alkylene and (NRARB) carbonyl； A and B are each independently selected from hydrogen, Br, Cl, F, I, OH, C1-C6 alkyl, C3-C8 cycloalkyl, C1-C10 alkoxy and C1-C10 alkoxy-C1-C10 alkyl, wherein C1-C6 alkyl, C3-C8 cycloalkyl, C1-C10 alkoxy and C1-C10 alkoxy-C1-C10 alkyl are optionally substituted with at least one substituent selected from OH, NO2, CN, Br, Cl, F, I, C1-C6 alkyl and C3-C8 cycloalkyl, wherein B is not OH； each R6 is selected from OH, NO2, CN, Br, Cl, F, I, C1-C6 alkyl, C3-C8 cycloalkyl, C2-C8 heterocycloalkyl； C2-C6 alkenyl, C1-C10 alkoxy, C1-C10 alkoxy-C1-C10 alkyl, C1-C10 alkoxycarbonyl, C1-C10 alkoxy-C1-C10 alkyl, C2-C6 alkynyl, aryl, aryl-C1 alkyl -C10, C3-C8 cycloalkyl-C1-C10 alkyl, C1-C10 haloalkoxy, C1-C10 haloalkyl, C1-C10 hydroxyalkylene, oxo, heteroaryl, heteroaryl-C1-C10 alkoxy, heteroaryloxy, heteroarylthio, hetero
