Biocatalytic Cascade for the Synthesis of Enantiopure β-Azidoalcohols and β-Hydroxynitriles
作者:Joerg H. Schrittwieser、Iván Lavandera、Birgit Seisser、Barbara Mautner、Wolfgang Kroutil
DOI:10.1002/ejoc.200900091
日期:2009.5
one-pot reaction sequence starting from prochiral α-chloroketones leading to enantiopure β-azidoalcohols and β-hydroxynitriles is described. Asymmetric bioreduction of α-chloroketones by hydrogen transfer catalysed by an alcohol dehydrogenase (ADH) established the stereogenic centre in the first step to furnish enantiopure chlorohydrin intermediates. Subsequent biocatalysed ring closure to the epoxide
An Enzyme Library Approach to Biocatalysis: Development of Nitrilases for Enantioselective Production of Carboxylic Acid Derivatives
作者:Grace DeSantis、Zuolin Zhu、William A. Greenberg、Kelvin Wong、Jenny Chaplin、Sarah R. Hanson、Bob Farwell、Lawrence W. Nicholson、Cynthia L. Rand、David P. Weiner、Dan E. Robertson、Mark J. Burk
DOI:10.1021/ja0259842
日期:2002.8.1
and diverse set of nitrilases is reported. The utility of this nitrilaselibrary for identifying enzymes that catalyze efficient production of valuable hydroxy carboxylicacidderivatives is demonstrated. Unprecedented enantioselectivity and substrate scope are highlighted for three newly discovered and distinct nitrilases. For example, a wide array of (R)-mandelic acidderivatives and analogues were
The synthesis of (4R-cis)-1,1-dimethylethyl 6-cyanomethyl-2,2-dimethyl-1,3-dioxane-4-acetate, a key intermediate for the preparation of CI-981, a highly potent, tissue selective inhibitor of HMG-CoA reductase
作者:Philip L. Brower、Donald E. Butler、Carl F. Deering、Tung V. Le、Alan Millar、Thomas N. Nanninga、Bruce D. Roth
DOI:10.1016/s0040-4039(00)74189-x
日期:1992.4
Three alternative methods for the synthesis of the optically active heptanoate (6), a key intermediate in the preparation of a highlypotent and tissue selective HMG Co-A reductaseinhibitor are described.
Nitrilases, nucleic acids encoding them and methods for making and using them
申请人:Chaplin Jennifer A.
公开号:US09217164B2
公开(公告)日:2015-12-22
The invention relates to nitrilases and to nucleic acids encoding the nitrilases. In addition methods of designing new nitrilases and method of use thereof are also provided. The nitrilases have increased activity and stability at increased pH and temperature.
Processes for making (R)-ethyl 4-cyano-3-hydroxybutyric acid
申请人:Diversa Corporation
公开号:US20040053378A1
公开(公告)日:2004-03-18
The invention provides novel processes for making ethyl-4-cyano-3-hydroxybutyrate, e.g., (R)-ethyl 4-cyano-3-hydroxybutyric acid, and 4-cyano-3-hydroxybutyric acid. The invention provides protocols for making and 4-cyano-3-hydroxybutyric acid and ethyl-4-cyano-3-hydroxybutyrate by whole cell processes, cell lysate processes, “one pot processes” and “multi-pot” processes using a variety of parameters.