title: Prenylated xanthones and tocotrienols from Garcinia virgata.
abstract: Two xanthones, namely virgataxanthone A and B, have been isolated from the stem bark of Garcinia virgata, together with two formylated tocotrienols and the known delta-tocotrienol, griffipavixanthone and 2,6-dihydroxy-4-methoxybenzophenone (cotoin). Their structures were mainly established using one and two-dimensional NMR and mass spectroscopies. When sufficient material was available, the antioxidant activities of the crude extracts as well as the isolated compounds were evaluated.
authors.affiliation: SONAS, UFR des Sciences Pharmaceutiques et d'Ingénierie de la Santé, 16 Bd Daviers, F-49100 Angers, France.
authors.forename: Joumaa
authors.initials: J
authors.lastname: Merza
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Aumond
authors.forename: David
authors.initials: D
authors.lastname: Rondeau
authors.forename: Vincent
authors.initials: V
authors.lastname: Dumontet
authors.forename: Anne-Marie
authors.initials: AM
authors.lastname: Le Ray
authors.forename: Denis
authors.initials: D
authors.lastname: Séraphin
authors.forename: Pascal
authors.initials: P
authors.lastname: Richomme
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D029760:Garcinia / Q000737:chemistry*; D024301:Plant Bark / Q000737:chemistry; D024508:Tocotrienols / Q000302:isolation & purification* / Q000494:pharmacology; D044004:Xanthones / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D000975:Antioxidants; D024508:Tocotrienols; D044004:Xanthones; C495037:virgataxanthone A; C495038:virgataxanthone B