Bioactive Secondary Metabolites from Phomopsis sp., an Endophytic Fungus from Senna spectabilis

Bioactive Secondary Metabolites from Phomopsis sp., an Endophytic Fungus from Senna spectabilis

Chemical investigation of an acetonitrile fraction from the endophytic fungus Phomopsis sp. led to the isolation of the new natural product 2-hydroxy-alternariol (7) together with the known compounds cytochalasins J (1) and H (2), 5'-epialtenuene (3) and the mycotoxins alternariol monomethyl et...

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Bibliographic Details
Main Authors: Vanessa Mara Chapla, Maria Luiza Zeraik, Valdecir F. Ximenes, Lisinéia Maria Zanardi, Márcia N. Lopes, Alberto José Cavalheiro, Dulce Helena S. Silva, Maria Cláudia M. Young, Luiz Marcos da Fonseca, Vanderlan S. Bolzani, Angela Regina Araújo
Format: Article
Language:English
Published: MDPI AG 2014-05-01
Series:Molecules
Subjects:
secondary metabolites
bioactivities
endophytic fungi
Phomopsis sp.
Senna spectabilis
Online Access:http://www.mdpi.com/1420-3049/19/5/6597
Description
Summary:Chemical investigation of an acetonitrile fraction from the endophytic fungus Phomopsis sp. led to the isolation of the new natural product 2-hydroxy-alternariol (7) together with the known compounds cytochalasins J (1) and H (2), 5'-epialtenuene (3) and the mycotoxins alternariol monomethyl ether (AME, 4), alternariol (AOH, 5) and cytosporone C (6). The structure of the new compound was elucidated by using 1-D and 2-D NMR (nuclear magnetic resonance) and high resolution mass spectrometry. The cytochalasins J (1) and H (2) and AOH (5) exhibited potent inhibition of the total ROS (reactive oxygen species) produced by stimulated human neutrophils and acted as potent potential anti-inflammatory agents. Moreover, cytochalasin H (2) demonstrated antifungal and acetylcholinesterase enzyme (AChE) inhibition in vitro.
ISSN:1420-3049

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