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New Metabolites From the Endophytic Fungus Cercophora samala Associated With Mitragyna inermis

Affiliation
Georg-August University, Institute of Organic and Biomolecular Chemistry, Germany
Vouffo, Erik Donfack;
GND
134154290
Affiliation
Julius Kühn-Institute (JKI), Institute for National and International Plant Health, Germany
Douanla-Meli, Clovis;
Affiliation
Department of Organic Chemistry, Faculty of Science, TWAS Research Unit (TRU), University of Yaoundé I, Cameroon
Awantu, Angelbert Fusi;
Affiliation
Department of Organic Chemistry, Faculty of Science, TWAS Research Unit (TRU), University of Yaoundé I, Cameroon
Lenta, Bruno Ndjakou;
Affiliation
Department of Organic Chemistry, Faculty of Science, TWAS Research Unit (TRU), University of Yaoundé I, Cameroon
Ngouela, Sylvère;
Affiliation
Department of Organic Chemistry, Faculty of Science, TWAS Research Unit (TRU), University of Yaoundé I, Cameroon
Tsamo, Etienne;
Affiliation
Georg-August University, Institute of Organic and Biomolecular Chemistry, Germany
Laatsch, Hartmut

Two new natural products, mitrafungidione (1) elucidated as prototrop-isomers of (R-3-acetyl-5-ethyl-4-hydroxy-5H-furan-2-one, and maristachone F (2a), elucidated as 5-(1-hydroxyethyl)-4-(hydroxymethyl)-3-methoxy-2-methylphenol, together with 5 known compounds have been isolated from the solid cultures of an endophytic fungus associated with Mitragyna inermis (Rubiaceae) and identified as Cercophora samala. The structures of these compounds were elucidated by detailed spectroscopic analysis and by comparison of their spectroscopic data with those reported in the literature. The absolute configuration of 1 and 2a were determined by extensive DFT calculations.

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