title: A stilbene and dihydrochalcones with radical scavenging activities from Loiseleuria procumbens.
abstract: A new dihydrochalcone, 6''-acetylphloridzosid, was isolated from the whole plant of Loiseleuria procumbens (L.) Desv. and identified as 2'-O-(6''-O-acetylglucopyranosyl)-4,4',6'-trihydroxydihydrochal cone by spectroscopic methods. In addition, one stilbene and three other dihydrochalcones were identified as (E)-piceid, phloretin (2',4,4',6'-tetrahydroxydihydrochalcone), phloridzosid (2'-O-glucopyranosyl-4,4',6'-trihydroxydihydrochalcone) and asebotin (2'-O-glucopyranosyl-4'-methoxy-4,6'-dihydroxydihydrochalcone), respectively. Some of these compounds showed scavenging properties towards the 2,2-diphenyl-1-picrylhydrazyl radical and antioxidant properties in a test with lysozyme.
authors.affiliation: Institut de Pharmacognosie et Phytochimie, Université de Lausanne, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Cuendet
authors.forename: O
authors.initials: O
authors.lastname: Potterat
authors.forename: A
authors.initials: A
authors.lastname: Salvi
authors.forename: B
authors.initials: B
authors.lastname: Testa
authors.forename: K
authors.initials: K
authors.lastname: Hostettmann
mesh_terms: D002599:Chalcone / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D019684:Magnoliopsida / Q000737:chemistry*; D013267:Stilbenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D016166:Free Radical Scavengers; D005960:Glucosides; D013267:Stilbenes; D002599:Chalcone; C058229:polydatin