Chemical and Pharmaceutical Bulletin
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Afzeliixanthones A and B, Two New Prenylated Xanthones from Garcinia afzelii ENGL. (Guttiferae)
Alain François Kamdem WaffoDulcie MulhollandJean Duplex WansiLuc Meva'a MbazeRobert PowoTheophile Ngando MpondoZacharias Tanee FomumWilfried KönigAugustin Ephrem. Nkengfack
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2006 Volume 54 Issue 4 Pages 448-451

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Abstract

Two new prenylated xanthones, afzeliixanthones A (1) and B (2), together with three known xanthones (3—5) and two phytosterols, β-sitosterol and stigmasterol, were isolated from the CH2Cl2/MeOH (1 : 1) extract of the stem bark of Garcinia afzelii ENGL. collected in the South West Province of Cameroon. Structures were mainly established using one and two-dimensional NMR and mass spectroscopies. The antioxidant activities of the crude extracts as well as the new compounds (1) and (2) were evaluated.

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© 2006 The Pharmaceutical Society of Japan
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