1-O-ethyl 2-O-methyl (2S,4R)-4-acetyloxy-5-(5-fluoro-2,4-dioxopyrimidin-1-yl)pyrrolidine-1,2-dicarboxylate 在
sodium tetrahydroborate 作用下,
以
1,4-二氧六环 、
甲醇 为溶剂,
反应 5.0h,
以40%的产率得到(2R,3R,5S)-ethyl-2-(5-fluoro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-hydroxy-5-(hydroxymethyl)pyrrolidine-1-carboxylate