Abstract: The invention discloses a compound represented by the following general formula (I) or a pharmaceutically acceptable salt thereof. The invention also discloses a preparation method of the compound and use thereof in preventing and/or treating cancer or tumor-related diseases, in particular diseases such as breast cancer, prostate cancer, lung cancer, multiple myeloma, leukemia, gastric cancer, ovarian cancer, colon cancer, liver cancer, pancreatic cancer, human glioma and the like. The compound of the invention is expected to be developed into a new generation of anticancer drugs.