2-methyl-3-phenylpyrido[4,3-d]pyrimidin-4(3H)-one 、
邻香草醛 在
甲苯 、
ethyl acetate dichloromethane 作用下,
以
溶剂黄146 为溶剂,
反应 2.0h,
以to give 65 mg of the target compound 19 (8% yield for two last steps)的产率得到(E)-2-(2-hydroxy-3-methoxystyryl)-3-phenylpyrido[4,3-d]pyrimidin-4(3H)-one