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Lanostane-triterpenoids from the fungus Phellinus gilvus
Hui-Kang Liu1, Tung-Hu Tsai, Tun-Tschu Chang
1National Research Institute of Chinese Medicine, Taipei, Taiwan.
Phytochemistry
|March 6, 2009
Summary
Four new triterpenoids, gilvsins A-D, were isolated from the Phellinus gilvus mushroom. These compounds, along with known ones, were analyzed, but showed no promising hypoglycemic activities.
Area of Science:
- Natural Product Chemistry
- Mycology
- Pharmacognosy
Background:
- Phellinus gilvus is a fungus known for its diverse secondary metabolites.
- Triterpenoids are a class of natural products with a wide range of biological activities.
- Investigating novel compounds from fungal sources is crucial for drug discovery.
Purpose of the Study:
- To isolate and characterize novel triterpenoids from the fruiting body of Phellinus gilvus.
- To evaluate the hypoglycemic potential of the isolated compounds.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation of novel compounds through comprehensive spectroscopic analysis (NMR, MS).
- Determination of absolute configuration using the modified Mosher's method and X-ray crystallography.
Main Results:
- Four new oxygenated lanostane-type triterpenoids, gilvsins A-D (1-4), were identified.
- Two known compounds, 24-methylenelanost-8-ene-3beta, 22-diol and 5alpha-ergosta-7,22-diene-3-one, were also isolated.
- The structures of the new compounds were confirmed by spectroscopic data and X-ray analysis for gilvins A.
Conclusions:
- The study successfully identified novel triterpenoids from Phellinus gilvus.
- The evaluated hypoglycemic activities of the isolated compounds were not significant, indicating limited therapeutic potential in this regard.
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