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Antimicrobial azaphilones from the fungus Hypoxylon multiforme
Dang Ngoc Quang1, Toshihiro Hashimoto, Marc Stadler
1Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
Planta Medica
|December 2, 2005
Summary
Four new azaphilone compounds, multiformins A-D, were discovered in the fungus Hypoxylon multiforme. These compounds exhibit potent antimicrobial activity against various microbes.
Area of Science:
- Natural Product Chemistry
- Mycology
- Microbiology
Background:
- The fungus Hypoxylon multiforme is known to produce various secondary metabolites.
- Azaphilones are a class of fungal metabolites with diverse biological activities.
Purpose of the Study:
- To isolate and characterize new compounds from Hypoxylon multiforme.
- To evaluate the antimicrobial potential of isolated compounds.
Main Methods:
- Methanolic stromatal extract of Hypoxylon multiforme.
- Isolation and purification techniques.
- Structure elucidation using 2D-NMR, UV, IR, mass, and CD spectroscopy.
Main Results:
- Four new azaphilones, named multiformins A-D, were isolated.
- A known binaphthyl compound, 4:5:4':5'-tetrahydroxy-1:1'-binaphthyl, was also identified.
- Multiformins A-D demonstrated strong, broad-spectrum antimicrobial activity.
Conclusions:
- Hypoxylon multiforme is a source of novel azaphilone compounds.
- Multiformins A-D possess significant antimicrobial properties, warranting further investigation.