(R)-2-((1R,19R)-1-acetoxy-19-methyl-20-oxoeicosyl)tetracosanoic acid methyl ester 、
5-[(17S,18S)-17-(tert-butyldimethylsilanyloxy)-18-methyl-hexatriacontylsulfonyl]-1-phenyl-1H-tetrazole 在
双(三甲基硅烷基)氨基钾 作用下,
以
乙二醇二甲醚 、
甲苯 为溶剂,
反应 1.5h,
以35%的产率得到methyl (2R,3R,21R,39S,40S,E)-3-acetoxy-39-((tert-butyldimethylsilyl)oxy)-2-docosyl-21,40-dimethyloctapentacont-22-enoate