Enzymatic evaluation of different Aspergillus strains by biotransformation of cyclic ketones

The potential of different Aspergillus strains in carrying out the biotransformation of cyclic ketones was investigated. All the strains employed showed alcohol dehydrogenase and Baeyer–Villiger monooxygenase activities. trans-2-Methylcyclohexanol and trans-4-methylcyclohexanol were prepared in a single isomeric form by the use of Aspergillus terreus SSP 1498 and the corresponding ketones. Baeyer–Villiger oxidation of cyclic ketones by all the fungi Aspergillus led to chiral lactones in good enantioselectivity.