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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Flavan derivatives. XX. A new glycoside and other extractives from Acacia ixiophylla: Rhamnitrin (rhamnetin 3α-L-rhamnoside)

JW Clark-Lewis and I Dainis

Australian Journal of Chemistry 21(2) 425 - 437
Published: 1968

Abstract

Rhamnitrin, a new glycoside from the shrub Acacia ixiophylla, is shown to be quercetin 7-methyl ether 3α-L-rhamnoside. A quercetin diglucoside (considered to be the 3,3'-diglucoside), quercitrin, queroetin, rhamnetin, apigenin, apigenin 7,4'-dimethyl ether, and (-)-epicatechin were also isolated. The extractive consisted mainly of mixtures of condensed tannins derived from 5,7,3',4'-tetrahydroxy-flavan-3-o1 and -3,4-diol monomers, and the lower polymers appear to be responsible for the antitumour activity of the extractive.

https://doi.org/10.1071/CH9680425

© CSIRO 1968

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