(4S,5R,6S,7S,8S)-10-[(2S,3S,5R,7R,9R,10S,11R,15S)-10-chloro-11-methoxy-15-methyl-3-(2-phenylmethoxyethyl)-2-triethylsilyloxy-4,6,8-trioxadispiro[4.1.57.35]pentadecan-9-yl]-4-methoxy-5-[(4-methoxyphenyl)methoxy]-8-methyldecane-1,6,7-triol 在
吡啶 、
三光气 、
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以44%的产率得到(4S,5S)-4-[(2S)-4-[(2S,3S,5R,7R,9R,10S,11R,15S)-10-chloro-11-methoxy-15-methyl-3-(2-phenylmethoxyethyl)-2-triethylsilyloxy-4,6,8-trioxadispiro[4.1.57.35]pentadecan-9-yl]butan-2-yl]-5-[(1S,2S)-5-hydroxy-2-methoxy-1-[(4-methoxyphenyl)methoxy]pentyl]-1,3-dioxolan-2-one