abstract |
The present invention relates to a new compound (as represented by formula (I)) and its application as a small molecule inhibitor of CDK class, and also relates to a pharmaceutical composition containing the above compound, and these compounds and compositions are effective in treating hyperproliferative disorders disease use. The novel compounds of the present invention are potent inhibitors of cyclin-dependent kinase 4 (cdk4) or cyclin-dependent kinase 6 (cdk6). |