title: Free radical scavengers from the aerial parts of Euphorbia petiolata.
abstract: Reversed-phase preparative high-performance liquid chromatography (HPLC) of the methanol extract of the aerial parts of Euphorbia petiolata Banks & Soland, an endemic Iranian medicinal plant, yielded ten free radical scavengers including eight flavonoid glycosides myricetin 3-O-glucoside (1), kaempferol 3-O-(2-O-galloyl)-glucoside (2), myricetin 3-O-rhamnoside (3), quercetin 3-O-glucoside (4), kaempferol 3-O-glucoside (5), quercetin 3-O-rhamnoside (6), kaempferol 3-O-rhamnoside (7), and quercetin 3-O-rutinoside (10), a coumarin esculetin (8) and a phenylpropanoid 2-hydroxydihydrocinnamic acid (9). The structures of these compounds were elucidated conclusively by spectroscopic means and also by direct comparison of their spectroscopic data with respective published data. The free radical scavenging properties of these compounds were assessed by the 2,2-diphenyl-1-picrylhydrazyl assay.
authors.affiliation: Research Center for Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Nazemiyeh
authors.forename: Elham Mohajjel
authors.initials: EM
authors.lastname: Kazemi
authors.forename: Khadijeh
authors.initials: K
authors.lastname: Zare
authors.forename: Malakeh
authors.initials: M
authors.lastname: Jodari
authors.forename: Lutfun
authors.initials: L
authors.lastname: Nahar
authors.forename: Satyajit Dey
authors.initials: SD
authors.lastname: Sarker
mesh_terms: D028481:Euphorbia; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification*; D035261:Plant Components, Aerial; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D016166:Free Radical Scavengers; D010936:Plant Extracts