4-[6-(8-cyclopentyl-6-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-ylamino)pyridin-3-yl]piperazine-1-carboxylic acid tert-butyl ester 在
盐酸 作用下,
以
甲醇 、
氯仿 为溶剂,
反应 2.0h,
以0.393 g的产率得到8-cyclopentyl-6-methyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one hydrochloride