期刊
TETRAHEDRON
卷 69, 期 1, 页码 184-189出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2012.10.047
关键词
Biotransformation; Steroid; Testolactone; Fusarium oxysporum; Baeyer-Villiger oxidation
资金
- National High-Tech Research & Development Program of China (863 Program) [2011AA02A211]
- Tianjin Municipal Science & Technology Commission [10ZCZDSY06700]
- Chinese Academy of Sciences
A fungus Fusarium oxysporum SC1301 was isolated from soil samples, which could transform androst-4-ene-3,17-dione, androst-1,4-diene-3,17-dione, dehydroepiandrosterone, progesterone, testosterone, and pregnenolone to give testolactone in 76-98% yields. Especially, for progesterone and pregnenolone, multi-step functional transformations, including oxygenative esterification of 20-ketosteroids, hydrolysis of ester, oxidation of C-17 OH group, oxygenative lactonization of 17-ketosteroids, 1-dehydrogenation, oxidation of C-3 OH group and Delta(5 -> 4) C=C bond migration, could proceed effectively to yield testolactone as a single product. This is the first example that a E oxysporum species shows catalytic capability of ring-D lactonization. The results are remarkably distinguished from those previously reported for the closely-related fungus F. oxysporum var. cubense, which predominantly mediates the hydroxylations at different positions of steroids. In addition, E oxysporum SC1301 may serve as a valuable biocatalyst for the production of testolactone. (C) 2012 Elsevier Ltd. All rights reserved.
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