Tannins and Related Compounds. XCVIII. : Structures of Three New Dimeric Ellagitannins, Excoecarianin and Excoecarinins A and B, Isolated from the Leaves of Excoecaria kawakamii HAYATA

Together with ten hydolyzable tannins and related compounds (1-10), three novel dimeric ellagitannins, excoecarianin (11), and excoecarinins A (13) and B (16), possessing a dehydrohexahydroxydiphenoyl or an elaeocarpusinoyl group, have been isolated from the leaves of Excoecaria kawakamii HAYATA (Eu...

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Veröffentlicht in:Chemical & pharmaceutical bulletin 1990/08/25, Vol.38(8), pp.2162-2171
Hauptverfasser: LIN, Jer-Huei, TANAKA, Takashi, NONAKA, Gen-ichiro, NISHIOKA, Itsuo, CHEN, Ih-Sheng
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Sprache:eng
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Zusammenfassung:Together with ten hydolyzable tannins and related compounds (1-10), three novel dimeric ellagitannins, excoecarianin (11), and excoecarinins A (13) and B (16), possessing a dehydrohexahydroxydiphenoyl or an elaeocarpusinoyl group, have been isolated from the leaves of Excoecaria kawakamii HAYATA (Euphorbiaceae). The structures of these tannins were established on the basis of spectroscopic and chemical evidence.
ISSN:0009-2363
1347-5223
DOI:10.1248/cpb.38.2162