Biocatalytic synthesis of chiral cyclic γ-oxoesters by sequential C–H hydroxylation, alcohol oxidation and alkene reduction
作者:Elisabetta Brenna、Michele Crotti、Francesco G. Gatti、Daniela Monti、Fabio Parmeggiani、Andrea Pugliese、Francesca Tentori
DOI:10.1039/c7gc02215h
日期:——
chiral 3-oxoesters, which are useful building blocks for the synthesis of active pharmaceutical ingredients. The allylic hydroxylation of the starting cycloalkenecarboxylates is carried out by using R. oryzae resting cells entrapped in alginate beads, in acetate buffer solution at 25 °C. The oxidation of the intermediate allylic alcohols to unsaturated ketones, performed by the laccase/TEMPO system
Achieving Regio- and Enantioselectivity of P450-Catalyzed Oxidative CH Activation of Small Functionalized Molecules by Structure-Guided Directed Evolution
作者:Rubén Agudo、Gheorghe-Doru Roiban、Manfred T. Reetz
DOI:10.1002/cbic.201200244
日期:2012.7.9
Taming the wild type: Directedevolution of a P450 enzyme enables control of regio‐ and enantioselectiveoxidation of challenging substrates, the starting wild‐type enzyme being unselective. R or S selectivity is possible on an optional basis, setting the stage for further regio‐ and diastereoselective chemical transformations.