Isolation and Structure Determination of Antiproliferative Secondary Metabolites from the Potato Earthball Mushroom, Scleroderma bovista (Agaricomycetes)
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Bernadett Kovacs1, Zoltán Béni2, Miklós Dékány2
1Department of Pharmacognosy, University of Szeged, Szeged, Hungary.
Abstract:
Mycochemical examination of a methanol extract of Scleroderma bovista Fr. (Agaricomycetes) led to the isolation of 7 compounds, which were, to our knowledge, identified for the first time in this species. The chemical structures of these compounds were determined through extensive spectroscopic methods (nuclear magnetic resonance and mass spectrometry). The fungal metabolites were identified as steroids based on ergostane (compounds 1-4) and lanostane (compounds 6 and 7) skeletons, whereas compound 5 was a ceramide derivative. We evaluated the antiproliferative activity of compounds 4-7 against human cancer cell lines (HeLa, A2780, MDA-MB-231, and MCF-7) using the MTT assay. The lanostane-type derivatives (compounds 6 and 7) and ergosterol peroxide 3-glucoside (compound 4) exerted significant antiproliferative property on 1 or more human cancer cell lines.
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