Microbial transformation of (+)-adrenosterone.

Area of Science:

• Microbial Biotechnology
• Natural Product Chemistry
• Steroid Metabolism

Background:

• (+)-Adrenosterone is a steroid hormone with potential for microbial modification.
• Understanding microbial biotransformation pathways is crucial for drug discovery and synthesis.
• Fungal species are known to possess diverse enzymatic capabilities for steroid modification.

Purpose of the Study:

• To investigate the microbial transformation of (+)-adrenosterone using different fungal strains.
• To identify and characterize the metabolites produced during these biotransformations.
• To explore the potential of fungi in generating novel steroid derivatives.

Main Methods:

• Fermentation of (+)-adrenosterone with selected fungal strains (Cephalosporium aphidicola, Fusarium lini, Trichothecium roseum).
• Isolation and purification of resulting metabolites.
• Structure elucidation of the transformed products using spectroscopic methods (e.g., NMR, Mass Spectrometry).

Main Results:

• Cephalosporium aphidicola transformed (+)-adrenosterone into androsta-1,4-diene-3,11,17-trione, 17beta-hydroxyandrost-4-ene-3,11-dione, and 17beta-hydroxyandrosta-1,4-diene-3,11-dione.
• Fusarium lini produced androsta-1,4-diene-3,11,17-trione and 17beta-hydroxyandrosta-1,4-diene-3,11-dione.
• Trichothecium roseum yielded 17beta-hydroxyandrost-4-ene-3,11-dione.

Conclusions:

• Fungal biotransformation offers a viable route for generating diverse steroid metabolites from (+)-adrenosterone.
• Different fungal species exhibit distinct regioselectivity and stereoselectivity in steroid modification.
• The identified metabolites represent novel steroid structures with potential applications in medicinal chemistry.