methyl (3S)-N5-[(tert-butoxy)carbonyl]-3-{[(tert-butyl)(dimethyl)silyl]oxy}-N2-[(2Z,4E,6E)-3-hydroxyocta-2,4,6-trienoyl]-N2-methyl-L-ornithinate 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 4.0h,
以93%的产率得到tert-butyl ((3S)-3-{[(tert-butyl)(dimethyl)silyl]oxy}-3-{(2S,4Z)-4-[(2E,4E)-1-hydroxyhexa-2,4-dien-1-ylidene]-1-methyl-3,5-dioxopyrrolidin-2-yl}propyl)carbamate