Flavonoid constituents from the roots of Acanthopanax brachypus

Abstract

Two new natural products, (3R)-5,7-dihydroxy-8-(2″-O-veratroyl- β-D-glucopyranosyl)-3-(4′-hydroxyphenyl)-6-methylchroman-4-one (1) and 4′-hydroxyisoflavone-7-O-[α-L-arabinopyranosyl-(1→6)- β-D-glucopyranoside] (2), along with eleven other known flavonoids, were isolated from the roots of Acanthopanax brachypus. Their structures were elucidated on the basis of spectroscopic and chemical evidence. © 2011 Pharmaceutical Society of Japan.