Flavonoids in the leaves of twenty-eight polygonaceous plants |
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Authors: | Masaru Kawasaki Takeshi Kanomata Kunijiro Yoshitama |
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Affiliation: | (1) Biological Institute, Faculty of Science, Shinshu University, 390 Matsumoto;(2) Present address: Faculty of Pharmaceutical Science, Toyama Medical & Pharmaceutical University, 2630 Sugitani, 930-01 Toyama |
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Abstract: | Flavonoids in the leaves of twenty-eight species belonging to the Polygonaceae were studied. Thirty-three kinds of flavonoids were isolated, and eighteen kinds were obtained as crystals. Quercetin glycosides were commonly found in the family. In the quercetin glycosides, 3-O-rhamnoside was most frequently found: 3-O-glucuronide is also distributed widely. Myricetin glycosides were rare. Methylated flavonols were found in some species of the sectionsEchinocaulon andPersicaria. Eleven kinds ofC-glycosylflavones were found in the present survey, andC-glycosylflavones were distributed in all species of the genusRheum and in almost all species of the section Tiniaria.Rumex Acetosella andPolygonum suffultum are exceptional, the former contains flavone glycoside and the latterC-glycosylflavones only, as main components. |
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Keywords: | Distribution pattern Flavonoids Polygónaceae |
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