Xanthones and benzophenones from Garcinia griffithii and Garcinia mangostana
Nilar Nguyen, L.-H.D. Venkatraman, G. Sim, K.-Y. Harrison, L.J.
Nilar
Nguyen, L.-H.D.
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Abstract
A new polyisoprenylated benzophenone, guttiferone I, together with the known compounds cambogin, 1,7-dihydroxyxanthone, 1,3,6,7-tetrahydroxyxanthone and 1,3,5,6-tetrahydroxyxanthone were isolated from the stem bark of Garcinia griffithii. The acetone extract of the heartwood of Garcinia mangostana contained one new diprenylated xanthone (mangoxanthone) and a new benzophenone (3′,6-dihydroxy-2,4,4′-trimethoxybenzophenone) as well as the known xanthones dulxanthone D, 1,3,7-trihydroxy-2-methoxyxanthone, 1,3,5-trihydroxy-13,13-dimethyl-2H-pyran[7,6-b]xanthen-9-one. Their structures were established on the basis of spectroscopic studies and chemical correlation. © 2005 Elsevier Ltd. All rights reserved.
Keywords
Garcinia griffithii, Garcinia mangostana, Guttiferae, Polyisoprenylated benzophenones, Xanthones
Source Title
Phytochemistry
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Date
2005-07
DOI
10.1016/j.phytochem.2005.04.032
Type
Article