乙酸酐 、
(1R,4R,5R,6R,10S)-1,10;4,5-diepoxy-11-hydroxygermacrane-6,14-diyl di-<(Z)-2-methylbut-2-enoate> 在
吡啶 作用下,
反应 24.0h,
以26 mg的产率得到(Z)-2-Methyl-but-2-enoic acid (1R,4R,6S,7R,8R,11S)-8-(1-acetoxy-1-methyl-ethyl)-4-methyl-11-((Z)-2-methyl-but-2-enoyloxymethyl)-5,12-dioxa-tricyclo[9.1.0.0
4,6]dodec-7-yl ester