8-indan-5-yl-5-oxo-2-[4-(1-boc-piperidin-4-yl)-phenylamino]-5,8-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
生成 8-indan-5-yl-5-oxo-2-(4-piperidin-4-yl-phenylamino)-5,8-dihydro-pyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester