Acetic acid 5-{[(E)-2,5-dimethoxy-phenylimino]-methyl}-2,4-dioxo-1,2,3,4-tetrahydro-pyrido[2,3-d]pyrimidin-6-ylmethyl ester 在
sodium cyanoborohydride 作用下,
以
乙醇 为溶剂,
反应 4.0h,
以0.616 g的产率得到6-(acetoxymethyl)-5-<<(2,5-dimethoxyphenyl)amino>methyl>pyrido<2,3-d>pyrimidine-2,4(1H,3H)-dione