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Prenylated xanthones and tocotrienols from Garcinia virgata
Joumaa Merza1, Marie-Christine Aumond, David Rondeau
1SONAS, UFR des Sciences Pharmaceutiques et d'Ingénierie de la Santé, 16 Bd Daviers, F-49100 Angers, France.
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.
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