In addition to 3,4-dihydroxybenzoic acid and (−)-epicatechin, a new glycoside of the latter has been isolated from the methanolic extract of the stem bark of Brosimopsis acutifolium. Its structure was established to be (−)-epicatechin 5-O-β-d-xylopyranoside on the basis of spectroscopic and chemical methods. In addition to 3,4-dihydroxybenzoic acid and (—)-epicatechin, the 5-O-β-d-xyloside (1) of the latter has been isolated from the stem bark of Brosimopsis acutifolium.
Moringa oleifera, Moringaceae, pods, bioassay directed fractionation, hypotensive principles
Publication DOI: 10.1016/S0031-9422(98)80094-0Journal NLM ID: 0151434Publisher: Elsevier
Institutions: H. E. J. Research Institute of Chemistry, University of Karachi, Karachi, Pakistan, Department of Physiology and Pharmacology, Faculty of Health Sciences, The Aga Khan University, Karachi, Pakistan
Methods: 13C NMR, 1H NMR, EI-MS, IR, TLC, enzymatic hydrolysis, UV, extraction, optical rotation measurement, CC, toxicity assays, HETCOR, VLC, biologic assay, INEPT
Found