Treatment of a benzene solution of 12-hydroxyeudesman-3,6-dione with p-toluenesulfonic acid in air gave 6,12-epoxyeudesma-4,6-dien-3-one (2) in 57% yield. Dienone 2 was further oxidized to give 7-hydroxyeudesmanes.
在空气中用
对甲苯磺酸处理 12-羟基桉叶烷-3,6-二酮的苯溶液,得到 6,12-环氧桉叶烷-4,6-二烯-3-酮(2),收率为 57%。二烯酮 2 被进一步氧化,得到 7-羟基桉叶烷。