already known terpenes, eleven new cudesmanolides whereas four new guaianolides were found in A. gmelinii. No sesquiterpene lactones were detected in the aerial parts of A. santolinifolia which afforded two new nerolidol derivatives besides several other already known compounds. From A. caerulescens var. cretacea six eudesmanolides were isolated, one of which has not been reported previously. The structures
摘要 Artemisia iwayomogi 的地上部分除了已知的萜烯外,还提供了 11 种新的 cudesmanolides,而在 A. gmelinii 中发现了 4 种新的
愈创木酚内酯。在 A. santolinifolia 的地上部分未检测到
倍半萜内酯,除了几种其他已知化合物外,这还提供了两种新的
橙花醇衍
生物。来自 A. caerulescens var。白垩纪中分离出六种eudesmanolides,其中一种以前没有报道过。通过高场1H NMR光谱和
化学转化阐明了结构。简要讨论了 Abrotanum 和 Seriphidium 亚属中
倍半萜内酯的
化学分类学意义。