(S)-2-[2-((2S,3R,4R,5S,6S)-3,4,5-Tris-benzyloxy-6-formyl-tetrahydro-pyran-2-yl)-acetylamino]-pentanedioic acid dibenzyl ester 在
palladium on activated charcoal
氢气 、 sodium cyanoborohydride 作用下,
生成
(2S)-2-[[2-[(2S,3S,4R,5S,6R)-6-[(4-benzyl-4-hydroxypiperidin-1-yl)methyl]-3,4,5-trihydroxyoxan-2-yl]acetyl]amino]pentanedioic acid