假细锥香茶菜新二萜成分——假细锥甲素的结构

COETSOIDIN A, A NEW DITERPENOID FROM RABDOSIA COETSOIDES C. Y. Wu

摘要: 从假细锥香茶菜(Rabdosia coetsoides C.Y.Wu)叶分离得到新二萜成分,根据紫外光谱、红外光谱、质谱、核磁共振氢谱及碳谱等分析,推定了化学结构,并经X-射线衍射确证,命名为假细锥甲素。

Abstract: From the leaves of Rabdosia coetsoides C. Y. Wu, a new diterpenoid, coetsoidin A (Ⅰ) was isolated and its structure was established by spectroscopic and X-ray diffraction analysis. It is the first instance of a kaurene type diterpenoid possessing α,β-unsaturated ketone functionality in ring B.