[(1S,3R,6R,8S,11R,13S,15R,16S,18R)-16-ethenyl-13,15-dimethyl-6-phenyl-2,5,7,12,17-pentaoxatetracyclo[9.8.0.03,8.013,18]nonadecan-15-yl] 2-[(1S,3R,5S,6R,8S,10R,12S,14S)-1,3-dimethyl-14-phenylmethoxy-12-(3-phenylmethoxypropyl)-5-[(Z)-3-tributylstannylprop-1-enoxy]-2,7,11-trioxatricyclo[8.4.0.03,8]tetradecan-6-yl]acetate 、
乙酸酐 在
吡啶 、
4-二甲氨基吡啶 、
二异丁基氢化铝 作用下,
以
二氯甲烷 为溶剂,
以88%的产率得到[2-[(1S,3R,5S,6R,8S,10R,12S,14S)-1,3-dimethyl-14-phenylmethoxy-12-(3-phenylmethoxypropyl)-5-[(Z)-3-tributylstannylprop-1-enoxy]-2,7,11-trioxatricyclo[8.4.0.03,8]tetradecan-6-yl]-1-[[(1S,3R,6R,8S,11R,13S,15R,16S,18R)-16-ethenyl-13,15-dimethyl-6-phenyl-2,5,7,12,17-pentaoxatetracyclo[9.8.0.03,8.013,18]nonadecan-15-yl]oxy]ethyl] 2-chloroacetate