(R)-4-Benzyl-3-{(R)-2-[(2S,4S,5R,6S)-6-((1S,4R,5S,6R,7R,8R)-6-benzyloxy-4-hydroxy-1,5,7-trimethyl-3-methylene-8-triisopropylsilanyloxy-nonyl)-5-methyl-2-phenyl-[1,3]dioxan-4-yl]-propionyl}-oxazolidin-2-one 在
4-二甲氨基吡啶 、
2,4,6-三氯苯甲酰氯 、
N,N-二异丙基乙胺 作用下,
生成 (2R,3S.4R,5S,6S,8S,9R,10R,11S,12R,13R)-3,5-[(S)-(benzylidene)dioxy]-11-(benzyloxy)-9-(tert-butyldimethylsiloxy)-8,8-(epoxymethano)-2,4,6,10,12,13-hexamethyltetradecanolide