oxide (7). The novel rearrangement reactions of compounds 11 and 14 under TCNE-catalyzed solvolysis conditions and the reactions of compounds 15 and 16 under superacid conditions (HSO3F/Et2O, -63 degrees C) have been investigated. The ginsenol derivative 17 is obtained from compounds 11 and 14 under TCNE-catalyzed conditions. The rearrangement of compounds 15 and 16 under superacid conditions leads to
倍半萜类泛pan烷衍
生物11和14-16是由
石竹烯氧化物制备的(7)。研究了在TCNE催化的溶剂分解条件下化合物11和14的新型重排反应以及在超酸条件下(HSO3F / Et2O,-63℃)的化合物15和16的反应。人参醇衍
生物17是在TCNE催化的条件下从化合物11和14获得的。在超酸条件下化合物15和16的重排导致了新的
倍半萜衍
生物(1S,4S,7S,10S,11S)-3,3,10,11-四甲基
三环[5.3.1.0(4,10)] undecan-1 ,11,11-
硫酸盐(19)和(1S,4S,5S,8S)-2,2,4,8-四甲基
三环[3.3.2.1(4,8)]
十一烷十一酮(20)。讨论了在panasinsane衍
生物的C-5处的仲羟基对这些重排过程的影响。