Bulletin of the Chemical Society of Ethiopia

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Antioxidant benzophenones and xanthones from the root bark of Garcinia smeathmannii

Alain Meli Lannang, Justin Komguem, Fernande Ngounou Ngninzeko, Jean Gustave Tangmouo, David Lontsi, Asma Ajaz, Muhammad Iqbal Choudhary, Beiban Luc Sondengam, Atta -ur-Rahman


A new geranylated xanthone (1) was isolated from the root bark extract of Garcinia smeathmannii Oliver along with known guttiferone I, isoxanthochymol, smeathxanthones A and B, and triacontanyl caffeate. The structures of these compounds were elucidated by spectral analysis and by comparison with the reported data. These compounds showed significant antioxidant DPPH radical scavenging activities. 


KEY WORDS: Garcinia smeathmanii, Xanthone, Antioxidant



Bull. Chem. Soc. Ethiop. 2006, 20(2), 247-252.
AJOL African Journals Online