Gaboroquinones A and B and 4‘-<i>O</i>-Demethylknipholone-4‘-<i>O</i>-β-<scp>d</scp>-glucopyranoside, Phenylanthraquinones from the Roots of <i>Bulbine </i><i>f</i><i>rutescens</i>
作者:Berhanu M. Abegaz、Merhatibeb Bezabih、Thomas Msuta、Reto Brun、Dirk Menche、Jörg Mühlbacher、Gerhard Bringmann
DOI:10.1021/np0201218
日期:2002.8.1
The novel phenylanthraquinones 4'-O-demethylknipholone-4'-O-beta-D-glucopyranoside (2) and gaboroquinones A (3) and B (4) were isolated from the African medicinal plant Bulbine frutescens. Biaryl 2 represents the firstphenylanthraquinone glucoside, while 3 and 4 are the first side-chain-hydroxylated phenylanthraquinones. Their constitutions were determined by spectroscopic analysis, in particular