A Stereoselective Inverting sec-Alkylsulfatase for the Deracemization of sec-Alcohols
摘要:
A metallo-beta-lactamase-type alkylsulfatase was found to catalyze the enantioselective hydrolysis of sec,alkylsulfates with strict inversion of configuration. This catalytic event, which does not have an analog in chemocatalysis, yields homochiral (S)-configurated alcohols and nonreacted sulfate esters. The latter could be converted into (S)-sec-alcohols as the sole product in up to > 99% ee via a chemoenzymatic deracemization protocol on a preparative scale.
Enantioselective Stereoinversion in the Kinetic Resolution of rac-sec-Alkyl Sulfate Esters by Hydrolysis with an Alkylsulfatase from Rhodococcus ruber DSM 44541 Furnishes Homochiral Products
Stereoselective hydrolysis of sec-mono-alkyl sulfate esters with retention of configuration
作者:Sabine R. Wallner、Bettina Nestl、Kurt Faber
DOI:10.1016/j.tet.2004.11.075
日期:2005.2
An optimised method for the stereoselectivehydrolysis of sec-alkylsulfate monoesters with absolute retention of configuration was developed. Under optimised conditions, clean hydrolysis of (R)-2-octyl sulfate was achieved in aqueous t-butyl methyl ether (3:97) using 0.6 equiv of p-toluenesulfonic acid as catalyst and 0.33 equiv of dioxane as mediator to give (R)-2-octanol as the sole product in the
[DE] SULFATASEN UND IHRE VERWENDUNG<br/>[EN] SULPHATASES AND USE THEREOF<br/>[FR] SULFATASES ET LEUR UTILISATION
申请人:DEGUSSA
公开号:WO2003042378A1
公开(公告)日:2003-05-22
Die Erfindung betrifft neue Akylsulfatasen aus Actinomyceten und deren Verwendung, insbesondere bei der katalytischen Umsetzung sekundärer Sulfatester.
A Stereoselective Inverting <i>sec</i>-Alkylsulfatase for the Deracemization of <i>sec</i>-Alcohols
A metallo-beta-lactamase-type alkylsulfatase was found to catalyze the enantioselective hydrolysis of sec,alkylsulfates with strict inversion of configuration. This catalytic event, which does not have an analog in chemocatalysis, yields homochiral (S)-configurated alcohols and nonreacted sulfate esters. The latter could be converted into (S)-sec-alcohols as the sole product in up to > 99% ee via a chemoenzymatic deracemization protocol on a preparative scale.
Enantioselective Stereoinversion in the Kinetic Resolution of rac-sec-Alkyl Sulfate Esters by Hydrolysis with an Alkylsulfatase from Rhodococcus ruber DSM 44541 Furnishes Homochiral Products
作者:Mateja Pogorevc、Wolfgang Kroutil、Sabine R. Wallner、Kurt Faber