外来入侵植物假臭草化学成分的研究

摘要

As an alien invasive plant, Eupatorium catarium is pare attentionto due to its economic impacts in China. The column chromatograph technology was used to determine the chemical constituents of E. catarium for providing useful information for reutilization of this alien invasive plant. In this study, 10 chemical constituents were isolated from E. catarium, and they were identified as quercetin（ Ⅰ）. 3-O-methylquercetin（ Ⅱ ）. luteolin （ Ⅱ ）. apigenin （ IV ）. 7,4＇-dihydroxy-5,6-dimethoxyflavone （ V ）. caffeic acid（ Ⅵ）. friedelin （ Ⅶ ）. 24-ethyl-5α-cholesta-7-22 （E）-dien-3-one （Ⅷ ）. Stigmasterol （ Ⅸ ） β-sitosterol （ X ） by their physicochemical property and spectroscopic features. All these compounds were firstly isolated from the species and the compound Ⅱ . Ⅳ. Ⅴ .Ⅷ were also firstly separated from Eupatorium genus. Except for compound V and compound Ⅷ, the other 8 compounds showed a utilizable value in medicine and agriculture, these would provide basic data for developing E. catarium products with high value-added products.%外来入侵杂草假臭草（Eupatorium catarium）对我国生态和经济的影响已备受关注，国内相关研究也日益增多，但对其化学成分的研究还比较少。通过对假臭草化学成分的分析，为资源化利用该外来入侵植物提供理论依据。采用柱色谱从外来入侵植物假臭草全草的70％乙醇提取物中分离纯化得到10个化合物，根据化合物的理化性质和波谱数据分析，经文献对照鉴定其结构分别为槲皮素（I）、3-甲氧基槲皮素（Ⅱ）、木犀草素（Ⅲ）、芹菜素（IV）、7，4＇-二羟基-5，6-二甲氧基黄酮（V）、咖啡酸（Ⅵ）、木栓酮（Ⅶ）、24-乙基-△7，22-胆甾二烯-3-酮（Ⅷ）、豆甾醇（IX）、β-谷甾醇（X）。所有化合物均首次从该植物中分离得到；化合物Ⅱ、Ⅳ、V、Ⅷ为首次从该属植物中分离得到；除V和Ⅷ外其他8种化合物，均具有医学和农业等方面利用价值。这为假臭草开发成高附加值产品提供了基础研究资料。