Sulfonyl amide derivatives of formula (I),wherein cyclic radical A is chosen from a group: 4-7-member carbocyclyl, 4-7-member heterocyclyl, phenyl or 5-6-member heteroaryl； K=CH, C(NH2) or N； B is chosen from a group: phenyl or 5-6-member heteroaryl, n=1-3, m=0-3, and substituent R1-R6 meanings are specified in the claims, or pharmaceutically acceptable salts thereof； pharmaceutical compositions on their basis and usage method for treatment of abnormal cell growth, such as cancer, in mammals.
