(2R,3S,4S)-4-(1-Formyl-vinyl)-3-methoxycarbonylmethyl-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester 在
sodium tetrahydroborate 、 cerium(III) chloride 作用下,
以
甲醇 为溶剂,
以97%的产率得到(2R,3S,4S)-4-(1-Hydroxymethyl-vinyl)-3-methoxycarbonylmethyl-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester