Flavanol glucosides from rhubarb and Rhaphiolepis umbellata |
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| Authors: | Gen-Ichiro Nonaka Emiko Ezaki Katsuya Hayashi Itsuo Nishioka |
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| Institution: | 1. Department of Agricultural Chemistry, Faculty of Agriculture, Kyushu University 46, Hakozaki, Higashi-ku, Fukuoka 812, Japan |
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| Abstract: | Investigations of rhubarb and the bark of Rhaphiolepis umbellata led to the isolation of new flavan-3-ol glucosides. Their structures were elucidated on the basis of 1H and 13C NMR analysis hydrolytic studies as (+)-catechin 5-O-β-d-glucopyranoside and (?)-catechin 7-O-β-d-glucopyranoside. |
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| Keywords: | Rhubarb Polygonaceae Rosaceae flavan-3-ol glucosides catechin |
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