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Published on: November 3, 2009
Atranones A-G, from the toxigenic mold Stachybotrys chartarum
S F Hinkley1, E P Mazzola, J C Fettinger
1Department of Chemistry and Biochemistry, Joint Institute for Food Safety and Applied Nutrition, University of Maryland, College Park 20742, USA.
Phytochemistry
|December 29, 2000
Summary
Seven novel atranones (A-G) were isolated from Stachybotrys chartarum. These compounds feature a unique bicyclic enol-lactone fused to an 11-membered ring, suggesting a diterpenoid origin.
Area of Science:
- Natural Products Chemistry
- Mycology
- Organic Chemistry
Background:
- Stachybotrys chartarum is a toxigenic fungus known to produce various secondary metabolites.
- The chemical diversity of fungal metabolites is vast, with many compounds possessing unique structural features and biological activities.
Purpose of the Study:
- To isolate and characterize novel compounds from Stachybotrys chartarum.
- To elucidate the structures of these new metabolites and investigate their potential origins.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation through spectroscopic methods (e.g., NMR, Mass Spectrometry).
Main Results:
- Seven atranones (A-G) were isolated and characterized.
- These compounds possess an unusual enol-lactone within a 3,7-dioxabicyclo[3.3.0]octane-2-one system fused to an 11-membered ring.
- Two new dolabellane diterpenes were also identified, structurally related to the atranones.
Conclusions:
- The isolated atranones represent a novel class of fungal metabolites with complex structures.
- The co-isolation of related diterpenes suggests a potential diterpenoid biosynthetic pathway for the C24 atranones.
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