(E)-4-({(S)-2-[(S)-2-(tert-Butoxycarbonyl-methyl-amino)-3-methyl-3-(1-methyl-1H-indol-3-yl)-butyrylamino]-3,3-dimethyl-butyryl}-methyl-amino)-2-methyl-but-2-enoic acid ethyl ester 在
lithium hydroxide 作用下,
以
甲醇 为溶剂,
生成 (E)-4-({(S)-2-[(S)-2-(tert-Butoxycarbonyl-methyl-amino)-3-methyl-3-(1-methyl-1H-indol-3-yl)-butyrylamino]-3,3-dimethyl-butyryl}-methyl-amino)-2-methyl-but-2-enoic acid