Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
Quadranosides VI-XI, Six New Triterpene Glucosides from the Seeds of Combretum quadrangulare
I Ketut ADNYANAYasuhiro TEZUKASuresh AWALEArjun Hari BANSKOTAKim Qui TRANShigetoshi KADOTA
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2000 Volume 48 Issue 8 Pages 1114-1120

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Abstract

Six new triterpene glucosides, quadranosides VI-XI (1-6), belonging to three different [ursane- (1-4), oleanane- (5) and lupane-type (6)] triterpene classes, have been isolated from a MeOH extract of the seeds of Combretum quadrangulare KURZ (Combretaceae), together with nine known compounds, rosamutin (7), 28-O-β-D-glucopyranosyl-6β, 23-dihydroxytormentic acid (8), arjunetin (9), arjunglucoside II (10), combreglucoside (11), chebuloside II (12), vitexin (13), (+)-catechin (14) and (-)-epigallocatechin (15). The structures of these compounds were elucidated by spectroscopic analysis.

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