Chemical constituents of Eupatorium catarium as an alien invasive plant

As an alien invasive plant, Eupatorium catarium is paid attention to due to its ecological and 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（Ⅲ）、apigenin（Ⅳ）、7,4dihydroxy5,6dimethoxyflavone(Ⅴ)、caffeic acid（Ⅵ）、friedelin(Ⅶ)、24ethyl5cholesta722(E)dien3one（Ⅷ）、Stigmasterol(Ⅸ) 、sitosterol(Ⅹ) by their physicochemical property and spectroscopic features. All these compounds were firstly isolated from the species and the compoundⅡ、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.