8-cyclopentyl-2-methanesulfinyl-6-(1-phenyl-ethyl)-8H-pyrido[2,3-d]pyrimidin-7-one 、
1-Boc-4-(4-氨基苯基)哌嗪 在
ethyl acetate hexanes 作用下,
以
二甲基亚砜 为溶剂,
以to give 4-{4-[8-cyclopentyl-7-oxo-6-(1-phenyl-ethyl)-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino]-phenyl}-piperazine-1-carboxylic acid tert-butyl ester as a yellow foam (1.94 g, 3.28 mmol, 76%)的产率得到4-{4-[8-cyclopentyl-7-oxo-6-(1-phenyl-ethyl)-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino]-phenyl}-piperazine-1-carboxylic acid tert-butyl ester