6-Bromo-2-chloro-8-cyclopentyl-5-methylpyrido-[2,3-d]pyrimidin-7(8H)-one is used to prepare pyridino[2,3-d]pyrimidin-7(8H)-one derivatives as CDK4 and/or CDK6 inhibitors useful in the treatment of diseases.
參考文獻
Li, X., et al.: PCT Int. Appl.,?WO?2014183520?A1?20141120 (2014)