title: Phenolic and other constituents of fresh water fern Salvinia molesta.
abstract: Two glycosides, 6'-O-(3,4-dihydroxy benzoyl)-beta-D-glucopyranosyl ester (1), and 4-O-beta-d-glucopyranoside-3-hydroxy methyl benzoate (2), along with five known compounds methyl benzoate (3), hypogallic acid (4), caffeic acid (5), paeoniflorin (6) and pikuroside (7) were isolated for the first time from a fresh water fern Salvinia molesta D.S. Mitch. These compounds showed a potent antioxidant radical scavenging activity in a non-physiological assay. Their structures were determined by NMR spectroscopic and CID mass spectrometry techniques.
authors.affiliation: H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan. hej@cyber.net.pk
authors.forename: M Iqbal
authors.initials: MI
authors.lastname: Choudhary
authors.forename: Nadra
authors.initials: N
authors.lastname: Naheed
authors.forename: Ahmed
authors.initials: A
authors.lastname: Abbaskhan
authors.forename: Syed Ghulam
authors.initials: SG
authors.lastname: Musharraf
authors.forename: Hina
authors.initials: H
authors.lastname: Siddiqui
authors.lastname: Atta-Ur-Rahman
mesh_terms: D001565:Benzoates / Q000737:chemistry / Q000302:isolation & purification; D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000737:chemistry / Q000302:isolation & purification; D001952:Bridged-Ring Compounds / Q000737:chemistry / Q000302:isolation & purification; D002109:Caffeic Acids / Q000737:chemistry / Q000302:isolation & purification; D029624:Ferns / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D039821:Monoterpenes; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D001565:Benzoates; D019086:Bridged Bicyclo Compounds, Heterocyclic; D001952:Bridged-Ring Compounds; D002109:Caffeic Acids; D005960:Glucosides; D006027:Glycosides; D039821:Monoterpenes; D010636:Phenols; C120734:pikuroside; C015423:peoniflorin; C044605:methyl benzoate; C040048:caffeic acid