(S)-1-((S)-2-Benzyloxycarbonylamino-3-methyl-butyryl)-3,5-diformyl-pyrrolidine-2-carboxylic acid methyl ester 在
sodium tetrahydroborate 作用下,
以58%的产率得到(S)-1-((S)-2-Benzyloxycarbonylamino-3-methyl-butyryl)-3,5-bis-hydroxymethyl-pyrrolidine-2-carboxylic acid methyl ester