methyl (2S)-4-[(2-methoxycarbonyl-3-phenylpropyl)sulfonimidoyl]-2-[N-[(4-nitrobenzyloxy)carbonyl]amino]butanoate 在
palladium on activated charcoal
氢气 作用下,
以54%的产率得到(2S)-2-amino-4-(4-benzyl-4,5-dihydro-1,3-dioxo-3H-1λ
6-1,2-thiazol-1-yl)butanoic acid