2-Acetylamino-3,3-dibromo-2-((S)-2-hydroxy-1-methoxycarbonyl-ethylamino)-butyric acid tert-butyl ester 在
palladium on activated charcoal
氢气 、
三乙胺 作用下,
以78%的产率得到2-Acetylamino-2-((S)-2-hydroxy-1-methoxycarbonyl-ethylamino)-butyric acid tert-butyl ester