【摘 要】
：
To search for new and bioactive constituents from traditional Chinese medicines, a new steroidal saponin, named vernonioside G (1), was isolated from the roots
【机 构】
：
Institute of Medicinal Plant Development,Guangxi Botanical Garden of Medicinal Plants
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To search for new and bioactive constituents from traditional Chinese medicines, a new steroidal saponin, named vernonioside G (1), was isolated from the roots of Vernonia cumingiana Benth. (Compositae).The structure of vernonioside G was elucidated using spectral methods, particularly two-dimensional nuclear magnetic resonance analysis. Together with the new compound, eight known compounds were also isolated and identified from the roots of V. cumingiana, among which, VE-1 (2) and 24-methylenelanost-9(11)-en-3β-ol acetate (3) were assigned NMR data for the first time and compound 3 was obtained as a natural product from a plant for the first time.
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