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Poster

Bio-active secondary metabolites from two Malaysian Clusaceae: Calophyllum flavo-ramulum and C. wallichianum

Abstract :

Calophyllum species (Clusiaceae) are known as a rich source of various secondary metabolites and prenylated phenolic derivatives [1] are very common among them. As part of our continuing phytochemical investigation on Calophyllum species from Malaysia [2] we report here our results on the fractionation of different crude extracts obtained from two endemic species -Calophyllum flavo-ramulum and C. wallichianum- which exhibited significant anti-oxidant activities. This study mainly resulted in the identification of phenolic derivatives among which prenylated xanthones and biflavonoids (amentoflavone) appeared as the active principles. The structure of flavoramulone, a new xanthone exhibiting a quite unusual α-dimethyl β-hydroxy tetrahydropyrane was determined through extensive NMR studies.

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Poster
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https://hal.univ-angers.fr/hal-03247442
Contributeur : Okina Université d'Angers <>
Soumis le : jeudi 3 juin 2021 - 10:00:42
Dernière modification le : vendredi 4 juin 2021 - 03:33:01

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Loubna Ferchichi, Anne-Marie Le Ray, David Guilet, Marc Litaudon, Khalijah Awang, et al.. Bio-active secondary metabolites from two Malaysian Clusaceae: Calophyllum flavo-ramulum and C. wallichianum. 55th International Congress and Annual Meeting of the Society for Medicinal Plant Research and Natural Product Research, 2009, Genève, Switzerland. Planta Medica, 75 (09), p. - 912, 2009, ⟨10.1055/s-0029-1234357⟩. ⟨hal-03247442⟩

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