Microbial conversion of partheniol by Calonectria decora.

Area of Science:

• Microbial Biotechnology
• Natural Product Chemistry
• Organic Chemistry

Background:

• Parthenol is a sesquiterpene lactone with potential biological activities.
• Fungal biotransformation is a powerful tool for generating novel chemical structures.
• Calonectria decora is known to possess enzymes capable of modifying complex organic molecules.

Purpose of the Study:

• To investigate the biotransformation of partheniol using the fungus Calonectria decora.
• To identify and characterize the metabolites produced during this biotransformation process.
• To explore the chemical diversity achievable through microbial modification of natural products.

Main Methods:

• Incubation of partheniol with Calonectria decora ATCC 14767.
• Extraction and purification of resulting metabolites.
• Structure elucidation using various spectroscopic techniques (e.g., NMR, Mass Spectrometry).

Main Results:

• Six distinct metabolites were successfully produced and isolated.
• The structures of the metabolites were identified as: aromadendr-1(10)-en-8alpha-ol; 5(9),6-tricyclohumul-1(10)-en-8alpha-ol; 4,15-didehydro-6-bicyclohumulan-8a,10alpha-diol; 5(9),6-tricyclohumulan-4a,8alpha-diol; maalian-la,8alpha-diol; and 14-epi-1(4)-epoxymaalian-8alpha-ol.
• The identities were confirmed through comprehensive spectroscopic data analysis.

Conclusions:

• Calonectria decora efficiently biotransformed partheniol into a range of structurally diverse sesquiterpenoids.
• This study expands the known repertoire of fungal-derived natural products.
• The findings highlight the potential of C. decora for generating novel chemical entities from natural precursors.