ORGANIC SALTS AND METHOD FOR PRODUCING CHIRAL ORGANIC COMPOUNDS
申请人:List Benjamin
公开号:US20090030216A1
公开(公告)日:2009-01-29
The invention relates to a method for producing chiral organic compounds by asymmetric catalysis, using ionic catalysts comprising a chiral catalyst anion. The claimed method is suitable for reactions which are carried out over cationic intermediate stages, such as iminium ions or acyl pyridinium ions. The invention enables the production of chiral compounds with high ee values, that until now could only be obtained by means of costly purification methods.
Enhancing the Peroxygenase Activity of a Cofactor‐Independent Peroxyzyme by Directed Evolution Enabling Gram‐Scale Epoxide Synthesis
作者:Marie‐Cathérine Sigmund、Guangcai Xu、Eleonora Grandi、Gerrit J. Poelarends
DOI:10.1002/chem.202201651
日期:2022.10.21
Directed evolution of the cofactor-independent peroxyzyme 4-OT yielded an efficient biocatalyst (fused 4-OT P8a) for the enantioselective epoxidation of α,β-unsaturatedaldehydes using hydrogen peroxide as an oxidant. The optimized peroxyzyme enabled the milligram- and gram-scale preparation of the desired α,β-epoxy-aldehydes with excellent conversions and outstanding enantiopurity, providing an attractive
Biocatalytic Cascade Synthesis of Enantioenriched Epoxides and Triols from Biomass‐Derived Synthons Driven by Specifically Designed Enzymes
作者:Eleonora Grandi、Michele Crotti、Marie-Cathérine Sigmund、Guangcai Xu、Pieter G. Tepper、Gerrit J. Poelarends
DOI:10.1002/chem.202300697
日期:——
application of multi-step enzymatic cascades to synthesize enantioenriched epoxides and vicinal aromatic triols from simple biomass-derived starting materials in one pot. These artificial metabolic pathways involve a tailor-made aldolase, a highly evolved cofactor-independent peroxyzyme, and when needed a specifically chosen epoxide hydrolase. These attractive biocatalyticcascades can be performed under environmentally