Present application discloses formula (I) compound and its salt. In addition, present application discloses use the pharmaceutical composition of the method for the compound and formula (I) compound or pharmaceutically acceptable salt thereof containing at least one in treatment proliferative diseases such as cancer.本申請披露了式(I)化合物及其鹽。另外,本申請披露了在治療增殖性疾病如癌症中使用所述化合物的方法和含至少一種式(I)化合物或其可藥用鹽的藥物組合物。