The substratespectrum of the inverting alkylsulfatase Pisa1 was investigated using a range of sec‐alkyl sulfate esters bearing aromatic, olefinic and acetylenic moieties. Perfect enantioselectivities were obtained for substrates bearing groups of different size adjacent to the sulfate ester moiety. Insufficient selectivities could be doubled by using dimethyl sulfoxide (DMSO) as co‐solvent. Hydrolytically
Highly enantioselective stereo-inverting sec-alkylsulfatase activity of hyperthermophilic Archaea
作者:Sabine R. Wallner、Bettina M. Nestl、Kurt Faber
DOI:10.1039/b504883d
日期:——
rac-sec-Alkyl sulfateesters 1a-8a were resolved in low to excellent enantioselectivities with E-values up to >200 using whole cells of aerobically-grown hyperthermophilic sulfur-metabolizers, such as Sulfolobus solfataricus DSM 1617, Sulfolobus shibatae DSM 5389 and, most notably, Sulfolobus acidocaldarius DSM 639. Significantly enhanced selectivities were obtained using cells grown on sucrose-enriched
Highly Enantioselective <i>s</i><i>ec</i>-Alkyl Sulfatase Activity of <i>Sulfolobus </i><i>a</i><i>cidocaldarius</i> DSM 639
作者:Sabine R. Wallner、Bettina M. Nestl、Kurt Faber
DOI:10.1021/ol0477778
日期:2004.12.1
[reaction: see text] rac-sec-Alkyl sulfateesters 1a-4a were resolved in high enantioselectivities with E-values up to >200 using whole cells of aerobically grown Sulfolobus acidocaldarius DSM 639. The stereochemical course of this biohydrolysis was shown to proceed with strict inversion of configuration; thus, the preferred (R)-enantiomers were converted into the corresponding (S)-sec-alcohols to