(S)-3-[2-(9H-Fluoren-9-ylmethoxycarbonylamino)-acetylamino]-4-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-butyric acid benzyl ester 在
palladium on activated charcoal 、
1,4-环己二烯 作用下,
以
甲醇 为溶剂,
以62%的产率得到(3S)-3-[[2-(9H-fluoren-9-ylmethoxycarbonylamino)acetyl]amino]-4-(5-methyl-2,4-dioxopyrimidin-1-yl)butanoic acid