NOVEL PURINE DERIVATIVE, INTERMEDIATE AND APPLICATION THEREOF IN PREPARING ANTICANCER MEDICINE

摘要

The present invention discloses a novel purine derivative represented by formula (I) or a pharmaceutically acceptable salt thereof, intermediate and application thereof in preparation of a medicament for treating or preventing a cancer. This compound is a novel PIK3 inhibitor with an excellent inhibitory activity, and may be useful for treating a variety of malignant tumors.