The cycloaddition of the gem-dimethylcyclopropenic methyl ester 1 with the morpholinospiro [2,5] octene 2, followed by solvolytic ring cleavage of the 2-morpholinobicyclo [2.1.0] pentane adduct provides the key sequence for the synthesis of 2,3-dihydro Illudine M 18, closely related to the natural antitumoral and antibacterial Illudine M.
Microbial Baeyer-Villiger Oxidation of Prochiral Polysubstituted Cyclohexanones by Recombinant Whole-Cells Expressing Two Bacterial Monooxygenases
作者:Marko D. Mihovilovic、Florian Rudroff、Birgit Grötzl、Peter Stanetty
DOI:10.1002/ejoc.200400676
日期:2005.3
The microbialBaeyer–Villigeroxidation of prochiral 3,5-dimethylcyclohexanones bearing various functionalities with recombinant E. coli cells overexpressing cyclohexanonemonooxygenase from Acinetobacter sp. NCIMB 9871 and cyclopentanone monooxygenase from Comamonas sp. NCIMB 9872 has been investigated. A distinct difference in substrate specificity and stereoselectivity of the two enzymes was observed