(6R,7R,8S,4"R)-8-[(2",2"-dimethyl-1",3"-dioxacyclopentyl)acryloyl]-15-oxogermacra-1(10),4,11(13)-trien-6,12-olide 以
氯仿 为溶剂,
反应 10.0h,
以100%的产率得到(5R,6R,7R,8S,10S,4"R)-8-[(2",2"-dimethyl-1",3"-dioxacyclopentyl)acryloyl]-15-oxoelema-1,3,11(13)-trien-6,12-olide