(8-cyclopentyl-2-methylsulfanyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-6-ylmethyl)-carbamic acid benzyl ester 、
2-(Phenylsulfonyl)-3-phenyloxaziridin 在
silica gel 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以to give (8-cyclopentyl-2-methanesulfinyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-6-ylmethyl)-carbamic acid benzyl ester as a white solid (0.98 g, 56.6%)的产率得到(8-cyclopentyl-2-methanesulfinyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-6-ylmethyl)-carbamic acid benzyl ester