(2R,3S)-2-{(1S,2S)-2-[(S)-3-Benzyloxycarbonyl-2-((S)-2-tert-butoxycarbonylamino-3-phenyl-propionylamino)-propionylamino]-3-cyclohexyl-1-hydroxy-propyl}-3-hydroxy-5-methyl-hexanoic acid methyl ester 在
4-二甲氨基吡啶 、 palladium on activated charcoal 、
氢气 、
N,N'-二环己基碳二亚胺 作用下,
生成
(2S,3S,4S,5S,8S)-8-((S)-2-tert-Butoxycarbonylamino-3-phenyl-propionylamino)-5-cyclohexylmethyl-4-hydroxy-2-isobutyl-7,10-dioxo-[1,6]oxazecane-3-carboxylic acid methyl ester