中文摘要：

目的：研究水朝阳旋覆花Inula helianthus-aquatica花序中的化学成分。方法：运用正/反相硅胶柱色谱、SephadexHL-20凝胶色谱、HPLC等色谱方法分离纯化化合物,利用MS,NMR等波谱学技术鉴定化合物结构。结果：从水朝阳旋覆花的花中分离鉴定出7个倍半萜内酯化合物：芳香堆心菊素（1）,8-表-堆心菊内酯（2）,水朝阳内酯（3）,6-表-去乙酰基异薄菊灵（4）,天名精内酯（5）,2,3-二氢芳香堆芯菊素（6）,二氢锦菊素（7）。结论：化合物12,,4,5为首次从该植物中分离得到。

英文摘要：

Objective：To investigate the chemical constituents of the flowers of Inula helianthus-aquatica.Method：Various chromatography methods such as silica gel,RP-18 Sephadex LH-20 column chromatography,HPLC,and et al were used to isolate the compoumds from the flowers of I.helianthus-aquatica.The structures of these compounds were elucidated by spectral analysis.Result：Seven sesquiterpene lactones were isolated and elucidated as aromaticin（1）,8-epihelenalin（2）,bigelovin（3）,6-epi-desacetylisotenulin（4）,carpesiolin（5）,2,3-dihydroaromaticin（6）,ergolide（7）.Conclusion：Compounds 1,2,4 and 5 were isolated from I.helianthus-aquatica for the first time.