(E)-(S)-4-{(S)-2-[(S)-2-(tert-Butoxycarbonyl-methyl-amino)-3-methyl-3-phenyl-butyrylamino]-3,3-dimethyl-butyrylamino}-2,5-dimethyl-hex-2-enoic acid ethyl ester 在
lithium hydroxide 作用下,
以
甲醇 为溶剂,
生成
(E)-(S)-4-{(S)-2-[(S)-2-(tert-Butoxycarbonyl-methyl-amino)-3-methyl-3-phenyl-butyrylamino]-3,3-dimethyl-butyrylamino}-2,5-dimethyl-hex-2-enoic acid