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• Morel, C
• Hay, A
• Litaudon, M
• Sévenet, T
• Séraphin, D
• Bruneton, J
• Richomme, P
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• Morel, C
• Hay, A
• Litaudon, M
• Sévenet, T
• Séraphin, D
• Bruneton, J
• Richomme, P
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• Morel, C
• Hay, A
• Litaudon, M
• Sévenet, T
• Séraphin, D
• Bruneton, J
• Richomme, P

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Molecules 2002, 7(1), 38-50; doi:10.3390/70100038

Article

Thirteen New Xanthone Derivatives from Calophyllum caledonicum (Clusiaceae)

Cécile Morel ¹ , Anne-Emmanuelle Hay ¹ , Marc Litaudon ² , Thierry Sévenet ² , Denis Séraphin ¹ , Jean Bruneton ¹  and Pascal Richomme ^1,*

¹ SONAS, UFR des Sciences Pharmaceutiques et Ingénierie de la santé, 16 Bd Daviers, F-49100 Angers, France ² ICSN-CNRS, Gif-sur-Yvette, F-91191, France

* Author to whom correspondence should be addressed.

Received: 11 October 2001; in revised form: 28 November 2001 / Accepted: 28 November 2001 / Published: 31 January 2002

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Abstract: An EtOAc extract of the stem bark of Calophyllum caledonicum (Clusiaceae) yielded thirteen new hydroxylated and/or prenylated xanthone derivatives, namely 5-hydroxy-8-methoxyxanthone (1), 3,5-dihydroxy-1,2-dimethoxyxanthone (2), 1,8-dihydroxy-6,7-dimethoxyxanthone (3), 5,7-dihydroxy-2,6-dimethoxyxanthone (4), 6,8-dihydroxy-3,7-dimethoxy-xanthone (5), 2,5,6,7,8-pentahydroxyxanthone (6), 1,3,8-trihydroxy-5,7-dimethoxyxanthone (7) and according to a previously adopted nomenclature [3], caledonixanthone G-L. (8-13). The structural elucidation of 1-13 were mainly established on the basis of 1D and 2D NMR and HRMS spectroscopic analysis.

Keywords: NMR; MS; xanthones; Calophyllum caledonicum; Guttiferae

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