论文部分内容阅读
由软珊瑚群柱虫Clavularia ap中新分离到一个不含卤素的具Dolabellane骨架的二萜内酯化合物3.由光谱分析和氢化反应确定了3的部分结构。然后由X射线衍射分析得出了整个分子的结构和相对构型。进一步由α、β-不饱和δ内酯在圆二色散中n→π~*区Cotton效应推出了3的绝对构型。
A non-halogen, Dolabellane-free diterpene lactone compound was newly isolated from Clavularia ap. 3. The partial structure of 3 was determined by spectroscopic analysis and hydrogenation. Then by X-ray diffraction analysis of the molecular structure and the relative configuration. Further, the absolute configuration of 3 was deduced from Cotton effect of α, β-unsaturated δ-lactone in the circular region of n → π ~ *.