Prenylated xanthones and tocotrienols from Garcinia virgata

Phytochemistry. 2004 Nov;65(21):2915-20. doi: 10.1016/j.phytochem.2004.06.037.

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.

MeSH terms

  • Antioxidants / chemistry
  • Antioxidants / isolation & purification
  • Antioxidants / pharmacology
  • Garcinia / chemistry*
  • Plant Bark / chemistry
  • Tocotrienols / isolation & purification*
  • Tocotrienols / pharmacology
  • Xanthones / isolation & purification*
  • Xanthones / pharmacology

Substances

  • Antioxidants
  • Tocotrienols
  • Xanthones
  • virgataxanthone A
  • virgataxanthone B