乙酸酐 、
(3R,4R,5R,6R,9S,10S,11R,12S)-10,12-Bis-(tert-butyl-dimethyl-silanyloxy)-14-(tert-butyl-diphenyl-silanyloxy)-6-(3,4-dimethoxy-benzyloxymethoxy)-3,5,9,11-tetramethyl-1-trityloxy-tetradecan-4-ol 在
4-二甲氨基吡啶 作用下,
以
吡啶 为溶剂,
反应 22.0h,
以87%的产率得到Acetic acid (1R,2S,3R,6S,7S,8R,9S)-7,9-bis-(tert-butyl-dimethyl-silanyloxy)-11-(tert-butyl-diphenyl-silanyloxy)-3-(3,4-dimethoxy-benzyloxymethoxy)-2,6,8-trimethyl-1-((R)-1-methyl-3-trityloxy-propyl)-undecyl ester