benzyl (4R)-5-amino-4-[(2S)-2-{[(5,5-dioxo-5,7,8,9-tetrahydro-5λ6-pyrido[1,2-b][1,2]benzisothiazol-10-yl)carbonyl]amino}propanoylamino]-5-oxopentanoate 、
溶剂黄146 在
palladium 10% on activated carbon 、
氢气 作用下,
以86%的产率得到(4R)-5-amino-4-[((2S)-2-{[(5,5-dioxo-5,7,8,9,10,10a-hexahydro-5λ6-pyrido[1,2-b][1,2]benzisothiazol-10-yl)carbonyl]amino}propanoyl)amino]-5-oxopentanoic acid acetate