8-cyclopentyl-2-methanesulfinyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carbonitrile 、
5-morpholin-4-yl-pyridin-2-ylamine 以
甲苯 为溶剂,
以40%的产率得到8-cyclopentyl-2-(5-morpholin-4-yl-pyridin-2-ylamino)-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carbonitrile