3-[2-amino-6-(6-methoxy-pyridin-3-yl)-4-methyl-7-oxo-7H-pyrido[2,3-d]pyrimidin-8-yl]-pyrrolidine-1-carboxylic acid tert-butyl ester 在
8-cyclopentyl-2-(ethylamino)-6-(3-hydroxypropyl)-4-methylpyrido[2,3-d]pyrimidin-7(8H)-one trifluoroacetate 作用下,
以
二氯甲烷 为溶剂,
以92.8%的产率得到2-amino-6-(6-methoxy-pyridin-3-yl)-4-methyl-8-pyrrolidin-3-yl-8H-pyrido[2,3-d]pyrimidin-7-one