(S)-3-((S)-2-tert-Butoxycarbonylamino-3-methyl-butyryl)-1-ethoxycarbonylmethyl-2-oxo-imidazolidine-4-carboxylic acid benzyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 为溶剂,
以100%的产率得到(S)-3-((S)-2-tert-Butoxycarbonylamino-3-methyl-butyryl)-1-ethoxycarbonylmethyl-2-oxo-imidazolidine-4-carboxylic acid