Lignan Glycosides fromTrichilia estipulataBark

Abstract
The methanol extract of the stem bark of Trichilia estipulata afforded four aryltetralin lignan glycosides which were identified on the basis of spectroscopic analysis of their acetates as (−)-isolariciresinol-3α-O-β-D-xylopyranoside and the new lignans (+)-4′-0-methyl-9′-deoxiisolariciresinol-3α-O-β-D-glucopyranoside, (−)-lyoniresinol-3α-L-rhamnopyranoside.