2(S)-[2(S)-tert-butoxycarbonylamino-3-(1H-indol-3-yl)-propionylamino]-pentanedioic acid 5-benzyl ester 1-tert-butyl ester 在
palladium-carbon
氢气 作用下,
以
乙酸乙酯 为溶剂,
以to give 2(S)-[2(S)-tert-butoxycarbonylamino-3-(1H-indol-3-yl)-propionylamino]-pentanedioic acid 1-tert-butyl ester as a white amorphous (3.70 g, quant)的产率得到2(S)-[2(S)-tert-butoxycarbonylamino-3-(1H-indol-3-yl)-propionylamino]-pentanedioic acid 1-tert-butyl ester