(S)-2-[(R)-5-Benzyloxymethyl-5-(3-methyl-but-2-enyl)-4-oxo-4,5-dihydro-1H-pyrrol-3-yl]-2-tert-butoxycarbonylamino-4-methyl-pentanoic acid methyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 为溶剂,
以86%的产率得到(S)-2-tert-Butoxycarbonylamino-2-[(R)-5-hydroxymethyl-5-(3-methyl-butyl)-4-oxo-4,5-dihydro-1H-pyrrol-3-yl]-4-methyl-pentanoic acid methyl ester