RadH: A Versatile Halogenase for Integration into Synthetic Pathways
作者:Binuraj R. K. Menon、Eileen Brandenburger、Humera H. Sharif、Ulrike Klemstein、Sarah A. Shepherd、Michael F. Greaney、Jason Micklefield
DOI:10.1002/anie.201706342
日期:2017.9.18
Flavin-dependenthalogenases are useful enzymes for providing halogenated molecules with improved biological activity, or intermediates for synthetic derivatization. We demonstrate how the fungalhalogenase RadH can be used to regioselectively halogenate a range of bioactive aromatic scaffolds. Site-directed mutagenesis of RadH was used to identify catalytic residues and provide insight into the mechanism
A thermo-regulated highly regioselective mono and dihalogenations of phenols and anilines in water employing new Lewis base adducts (LBAs) [DBUBr]<sup>+</sup>Br<sup>−</sup> and [DBUI]<sup>+</sup>I<sup>−</sup> as green reagents: a simple approach
an operationally simple temperature-dependant regioselective halogenation of phenols and anilines in water using readily accessible and highly stable Lewis base adducts (LBAs) is reported. These newly discovered LBAs [DBUBr]+Br− and [DBUI]+I− are compatible with a wide range of substrates for regioselective brominations and iodinations with excellent yields (up to 95%), and the products were directly