【摘要】 目的　研究皂角皂苷元的化学结构。方法　通过提取、完全水解、层析等方法 ,从皂角中获得 2种皂苷元 ,制备系列衍生物并进行红外、核磁共振、质谱和晶体衍射等分析。结果　 2种皂角皂苷元分别为 3-羟基 - 12 -齐墩果烯 - 2 8酸和 3,16 -二羟基 - 12 -齐墩果烯 - 2 8-酸。结论　首次确定了 2种皂角皂苷元的化学结构和晶体结构更多还原

【Abstract】 Object To study on the structure of sapogenins from pod of Gleditsia sinensis Lam Methods Pod of G. sinensis was extracted with solvents and the constituents in the extraction isolated, after hydrolised completely, with the aid of flash chromatography to obtain 2 gledgenins Results The structures of the 2 gledgenins were proved to be 3 hydroxy 12 oleanen 28 oic acid and 3, 16 dihydroxy 12 oleanen 28 oic acid respectively as shown by IR, NMR, MS and crystallographic data The structures were further verified by acylation, methylation and followed by reaction with 3, 5 dinitro benzoyl chloride Conclusion New crystalline derivatives were obtained to provide further evidence of their structures更多还原