Prenylated xanthones and tocotrienols from Garcinia virgata.
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.
Merza
Joumaa
J
SONAS, UFR des Sciences Pharmaceutiques et d'Ingénierie de la Santé, 16 Bd Daviers, F-49100 Angers, France.
Aumond
Marie-Christine
MC
Rondeau
David
D
Dumontet
Vincent
V
Le Ray
Anne-Marie
AM
Séraphin
Denis
D
Richomme
Pascal
P
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
D000975:Antioxidants; D024508:Tocotrienols; D044004:Xanthones; C495037:virgataxanthone A; C495038:virgataxanthone B