| abstract |
The invention belongs to the field of medicinal chemistry, and specifically relates to a class of CDK inhibitors, their pharmaceutical composition, preparation method and application. The present invention provides the compound represented by the following formula A, its stereoisomers, racemates, tautomers, isotope labels, nitrogen oxides, solvates, or pharmaceutically acceptable salts thereof, The compound has good CDK regulating activity, is suitable for medicine and has clinical application value. |