PYRROLO2,1-F1,2,4TRIAZINE DERIVATIVES SERVING AS SELECTIVE HER2 INHIBITORS AND APPLICATION THEREOF

摘要

The present invention relates to a group of pyrrolo[2,1-f][1,2,4]triazine derivatives serving as selective HER2 inhibitors and an application thereof in the preparation of a drug that serves as an HER2 inhibitor. Specifically, the present invention relates to a compound represented by formula (I), an isomer thereof or a pharmaceutically acceptable salt thereof.;