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  • Title: Three novel compounds from the leaves of Smallanthus sonchifolius.
    Author: Qiu YK, Kang TG, Dou DQ, Liang L, Dong F.
    Journal: J Asian Nat Prod Res; 2008; 10(11-12):1109-15. PubMed ID: 19031255.
    Abstract:
    Three novel compounds, together with five known ingredients, octacosanol, 3',4',5-trihydroxy-3,7-dimethoxyflavone, 3,4-dihydroxybenzaldehyde, isorhamnetin, and ent-kaurane-3beta,16beta,17-triol, were obtained from the leaves of Smallanthus sonchifolius (yacon), and their structures were elucidated as ent-kaurane-3beta,16beta,17,18-tertol (1), 3R,7E-9-butoxyl-megastigma-3-ol-3-O-beta-D-glucopyranoside (2), and 3S,5R,6Z-megastigma-6-en-3,5,8,9-tertol (3) on the basis of spectroscopic and chemical methods.
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