五爪金龙的化学成分研究

Study of Chemical Constituents from Ipomoea Cairica

目的:为阐明五爪金龙的有效成分,对其地上部分进行了化学成分研究。方法:五爪金龙地上部分乙醇回流提取,提取物用石油醚、氯仿、乙酸乙酯和正丁醇萃取,氯仿萃取部位经反复硅胶柱层析。化合物结构鉴定通过理化常数和波谱数据进行确定。结果:分离得到4个化合物,经光谱方法和物理方法鉴定分别为槲皮素-4′,7-二甲醚(Ⅰ),山奈素-4′,7-二甲醚(Ⅱ),β-胡萝卜苷(Ⅲ),β-谷甾醇(Ⅳ)。结论:以上化合物全部为首次从该植物中分离得到,其中化合物Ⅱ为首次从该属中分离得到。

Objective ： To investigate the chemical constituents from Ipomoea cairica. Methods ： Compounds were isolated and purified by repeated silica gel chromatographic techniques. And their structures were elucidated with physicochemical properties and spectroscopic data. Results：Four chemical constituents were isolated and identified as quercetin-7,4＇-dimethyl ethyl（I）, kaempferol-7,4＇-dimethyl ethyl （2） β-daucosterol （3）, β-sitosterol （4） respectively. Conclusion ： Compound 1 -- 4 were isolated from this plant for the first time, and compound 2 was isolated from genus Ipomea.