5-benzyl 1-cyclopentyl N,N-bis(tert-butoxycarbonyl)-L-glutamate 在
钯 氢气 作用下,
以
乙酸乙酯 为溶剂,
反应 19.0h,
以to provide the title compound as a pale yellow oil (8.28 g, 99% yield)的产率得到(4S)-4-[Bis(tert-butoxycarbonyl)amino]-5-(cyclopentyloxy)-5-oxopentanoic acid