A new acetophenone of aerial parts from Rumex aquatica

Abstract

A new acetophenone named rumexin (3-hydroxy-5-methyl-4-O-β-D- glucopyranosyl acetophenone) was isolated from methanolic extract of Rumex aquatica together with eight known compounds, quercetin-3-O-β-D- glucuropyranoside, musizin-8-O-β-D-glucopyranoside, quercetin-3-O-α- L-rhamnoside, emodin-8-O-β-D-glucopyra noside, caffeic acid, 1-O-caffeoyl-β-D-glucopyranoside, 1-methyl caffeic acid, kaempferol-3-O-β-D-glucuropyranoside. All of the above compounds were isolated from Rumex aquatica for the first time, and structures of compounds were established by spectroscopic means.