、
ethyl 3-(2-thiazolyl)propionate 、
4-(环戊基氨基)-2-(甲基硫代)-5-嘧啶羧醛 在
乙醚 作用下,
以
乙酸乙酯 为溶剂,
以to give 8-cyclopentyl-2-methylsulfanyl-6-thiazol-2-ylmethyl-8H-pyrido[2,3-d]pyrimidin-7-one as an off-white solid (1.33 g, 3.71 mmol, 30%)的产率得到8-cyclopentyl-2-methylsulfanyl-6-thiazol-2-ylmethyl-8H-pyrido[2,3-d]pyrimidin-7-one