• Natural Product Sciences
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• 제2권1호
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• pp.19-23
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• 1996

A mixture of sterols containing ${\beta}-sitosterol$ and stigmasterol (1), and sterol glycosides containing $3-O-{\beta}-D-glucopyranosyl$ ${\beta}-sitosterol$ and $3-O-{\beta}-D-glucopyranosyl$ stigmasterol (2) were isolated from the leaves of Gynura procumbens. After acetylation of 2 with pyridine-acetic anhydride, $3-0-{\beta}-D-tetra-O-acetylglucopyranosyl$ ${\beta}>-sitosterol$ (3) was isolated.