The substrate scope of inverting alkylsulfatase Pisa1 was extended towards benzylic sec-sulfate esters by suppression of competing non-enzymatic autohydrolysis by addition of dimethyl sulfoxide as co-solvent. Detailed investigation of the mechanism of autohydrolysis in 18O-labeled buffer by using an enantiopure sec-benzylic sulfate ester as substrate revealed that from the three possible pathways (i)
One-Pot Deracemization of<i>sec</i>-Alcohols: Enantioconvergent Enzymatic Hydrolysis of Alkyl Sulfates Using Stereocomplementary Sulfatases
作者:Markus Schober、Michael Toesch、Tanja Knaus、Gernot A. Strohmeier、Bert van Loo、Michael Fuchs、Florian Hollfelder、Peter Macheroux、Kurt Faber
DOI:10.1002/anie.201209946
日期:2013.3.11
Hand in hand: The title transformation was achieved using a pair of sulfatases acting through inversion and retention of configuration on opposite substrate enantiomers. Using Pseudomonas aeruginosa arylsulfatase PAS with alkylsulfatase PISA1 in one‐pot leads to sec‐alcohols (80 to >99 % conversion) with 91 to greater than 99 % ee.