Halimodendrin I, a new acylated triterpene glycoside from Halimodendron halodendron (Fabaceae)

Abstract

Halimodendrin I, a new acylated triterpene glycoside ( 1), was isolated and chemically characterized as 3β- O-palmitoyl-28-[3′-palmitoyl-β- d-glucopyranosyl]-olean-12-en-28-oic acid from the aerial part of Halimodendron halodendron (Fabaceae) by IR, 1D and 2D NMR, HR-ESI-MS and LR-ESI-MS experiments. In addition, seven known compounds were isolated and identified as: palmitic acid, glycerol-2-linoleneate, glycerol-1,3-dilinoleneate, ferulic acid, 3- O-methylquercetin, β-sitosterol, and β-sitosterol-3- O-β- d-glucopyranoside. Nine fatty acids were identified and quantified in the saponifiable matter of the hexane extract. These fatty acids are: myristic, n-pentadecanoic, palmitoleic, palmitic, linoleic, oleic, stearic, arachidic, and behenic acids. The volatile oil was isolated by hydrodistillation (0.013%, w/w) with unpleasant smell. Twenty-seven components were identified in the oil by GC/MS.