Nonenzymatic Regeneration of Styrene Monooxygenase for Catalysis
作者:Caroline E. Paul、Dirk Tischler、Anika Riedel、Thomas Heine、Nobuya Itoh、Frank Hollmann
DOI:10.1021/acscatal.5b00041
日期:2015.5.1
Styrene monooxygenase (SMO) is a two-component flavoprotein catalyzing the selective epoxidation of various C═C double bonds. For cell-free catalysis, traditionally a cascade of NAD(P)H:flavin oxidoreductase, nicotinamidecofactor (NADH), and NADH regeneration enzyme is required to supply StyA with the reduced flavin adenine dinucleotide cofactor (FADH2) required for catalysis. Herein, we present a
Peroxygenase‐Catalysed Epoxidation of Styrene Derivatives in Neat Reaction Media
作者:Marine C. R. Rauch、Florian Tieves、Caroline E. Paul、Isabel W. C. E. Arends、Miguel Alcalde、Frank Hollmann
DOI:10.1002/cctc.201901142
日期:2019.9.19
Biocatalytic oxyfunctionalisation reactions are traditionally conducted in aqueous media limiting their production yield. Here we report the application of a peroxygenase in neatreaction conditions reaching product concentrations of up to 360 mM.
Enantioselective Hydrolysis of Racemic and <i>Meso</i>-Epoxides with Recombinant <i>Escherichia coli</i> Expressing Epoxide Hydrolase from <i>Sphingomonas</i> sp. HXN-200: Preparation of Epoxides and Vicinal Diols in High <i>ee</i> and High Concentration
作者:Shuke Wu、Aitao Li、Yit Siang Chin、Zhi Li
DOI:10.1021/cs300804v
日期:2013.4.5
A unique epoxide hydrolase (SpEH) from Sphingomonassp. HXN-200 was identified and cloned based on genome sequencing and expressed in Escherichiacoli. The engineered E. coli (SpEH) showed the same selectivity and substrate specificity as the wild type strain and 172 times higher activity than Sphingomonassp. HXN-200 for the hydrolysis of styrene oxide 1. Hydrolysis of racemic styrene oxide 1, substituted
A Unique Binaphthyl Strapped Iron–Porphyrin Catalyst for the Enantioselective Epoxidation of Terminal Olefins
作者:Eric Rose、Qi-Zhi Ren、Bruno Andrioletti
DOI:10.1002/chem.200305222
日期:2004.1.5
A new chiral binaphthyl-strapped iron-porphyrin 4 b that exhibits unprecedented catalytic activity toward the enantioselective epoxidation of terminalolefins was synthesized. Typical enantiomeric excesses (ee) of 90 % were measured with a maximum of 97 % for the epoxidation of styrene, whereas the turnover numbers (TON) averaged 16000.
Catalytic Enantioselective Conversion of Epoxides to Thiiranes
作者:Saihu Liao、Markus Leutzsch、Mattia Riccardo Monaco、Benjamin List
DOI:10.1021/jacs.6b01960
日期:2016.4.27
A highlyefficient and enantioselective Brønsted acid catalyzed conversion of epoxides to thiiranes has been developed. The reaction proceeds in a kineticresolution, furnishing both epoxide and thiirane in highyields and enantiomeric purity. Heterodimer formation between the catalyst and sulfur donor affords an effective way to prevent catalyst decomposition and enables catalyst loadings as low as