2-Acetylamino-3,3-dibromo-2-((1S,2R)-2-hydroxy-1-methoxycarbonyl-propylamino)-butyric acid tert-butyl ester 在
palladium on activated charcoal
氢气 、
三乙胺 作用下,
以90%的产率得到(2S,3R)-2-(1-Acetylamino-1-tert-butoxycarbonyl-propylamino)-3-hydroxy-butyric acid methyl ester