BigPatents India

The invention concerns novel derivatives of general fomlula (I) wherein R3 is a CI-C6 alkyl, aryl, aryl(C 1 C6)alkyl, heteroaryl, heteroaryl(Cl-C6)alkyl, aryl or heteroaryl fused to a C I-C I 0 cycloalkyl, heterocycle, heterocycloalkyl, cycloalkyl, adamantyl, polycycloalkyl, alkenyl, alkynyl, CONRIR2, COORI, SO2Rl, C(=NH)RI, C(=NH)NRI; R5, R6 are independently of each other selected among the following radicals: halogen, CN, N02, NH2, OH, COOH, C(O)OR8, C(0)R8, NR8R9, NHC(O)R8, C(O)NR8R9, NHC(S)R8, C(S)NR8R9, SR8, S(O)R8, SO2R8, NHSO2R8, SO2NR8R9, -O-SO2R8, -S02-0-R8, trifluoromethyl, trifluoromethoxy, C I-C6 alkyl, C I-C6 alkoxy, aryl, aryl( C 1- C6)alkyl, heteroaryl, heteroaryl( C l-C6)alkyl, heterocycle, cycloalkyl, alkenyl, alkynyl, adamantyl, polycycloalkyl.