Journal
PHYTOCHEMISTRY
Volume 67, Issue 19, Pages 2152-2158Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2006.06.018
Keywords
Polygonum ferrugineum; Polygonaceae; homoisoflavanone; dihydrochalcone; flavanones; chalcones; 5,7-dihydroxy-6-metboxy-3-(9-hydroxy-phenyimethyl)-chroman-4-one; 2 ',4 ',6 '-trihydroxy-3 '-methoxy-alpha-hydroxymethyl-beta-hydroxydihydrochalcone
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The homoisoflavanone 5,7-dihydroxy-6-methoxy-3-(9-hydroxy-phenylmethyl)-chroman-4-one (1) and its structurally related 2 ',4 ',6 '-trihydroxy-3 '-methoxy-alpha-hydroxymethyl-beta-hydroxy-dihydrochalcone (2) along with the known pashanone (3), flavokawin B (4) and cardamonin or alpinetin chalcone (5) pinostrobin (6) and 5,8-dimethoxy-7-hydroxychroman-4-one (7) were isolated from dry leaves of Polygonum ferrugineum (Polygonaceae). To our knowledge, this is the first report of the isolation of a homoisoflavanone from the Polygonum genus and the Polygonaceae family, and could be an important chemotaxonomic finding. In addition, the pattern of substitution of this homoisoflavanone is different from others previously reported. (c) 2006 Elsevier Ltd. All rights reserved.
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