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Microbial transformation of sclareolide
Atta-ur-Rahman1, A Farooq, M I Choudhary
1H. E. J. Research Institute of Chemistry, University of Karachi, Pakistan.
Journal of Natural Products
|November 14, 1997
Summary
Microbial transformation of sclareolide using fungi like Curvularia lunata and Aspergillus niger yielded five oxidized metabolites. These biotransformations offer new routes to valuable chemical compounds.
Area of Science:
- Microbial Biotechnology
- Natural Product Chemistry
- Organic Synthesis
Background:
- Sclareolide is a natural product with potential applications.
- Microbial transformations are a sustainable method for chemical modification.
- Exploring fungal biotransformation of sclareolide can uncover novel derivatives.
Purpose of the Study:
- To investigate the microbial transformation of sclareolide using various fungal strains.
- To identify and characterize the oxidized metabolites produced.
- To evaluate the potential of different fungi in sclareolide biotransformation.
Main Methods:
- Fermentation of sclareolide (1) using Curvularia lunata, Aspergillus niger, Gibberella fujikuroii, and Fusarium lini.
- Isolation and purification of metabolites using chromatographic techniques.
- Structure elucidation of the obtained compounds using spectroscopic methods.
Main Results:
- Curvularia lunata and Aspergillus niger transformed sclareolide into five oxidized metabolites: 3-ketosclareolide (2), 1 beta-hydroxysclareolide (3), 3 beta-hydroxysclareolide (4), 1 alpha,3 beta-dihydroxysclareolide (5), and 1 beta, 3 beta-dihydroxysclareolide (6).
- Gibberella fujikuroii produced metabolites 2-5.
- Fusarium lini yielded metabolites 4 and 5.
Conclusions:
- The study successfully identified six oxidized metabolites of sclareolide through microbial fermentation.
- Different fungal species exhibit varying capabilities in hydroxylating and oxidizing sclareolide.
- These findings highlight the potential of employing specific fungi for targeted sclareolide modification.