| abstract |
The present invention belongs to the field of chemical medicine and provides a class of compounds having protein tyrosine kinase inhibitory activity or a pharmaceutically acceptable salt, isomer, solvate, crystal or prodrug thereof. The invention also provides a process for the preparation of a compound of the invention, a pharmaceutical composition comprising a compound of the invention, or a pharmaceutically acceptable salt, isomer, solvate, crystal or prodrug thereof, and a compound or composition of the invention Application in medicine for treating or preventing tumors. |