Polanski, Jaroslaw; Ratajczak, Aleksander, Polish Journal of Chemistry, 1991, vol. 65, # 11, p. 1973 - 1977
作者:Polanski, Jaroslaw、Ratajczak, Aleksander
DOI:——
日期:——
Enantioselective Synthesis of α‐Thiocarboxylic Acids by Nitrilase Biocatalysed Dynamic Kinetic Resolution of α‐Thionitriles
作者:Kate Lauder、Silvia Anselmi、James D. Finnigan、Yuyin Qi、Simon J. Charnock、Daniele Castagnolo
DOI:10.1002/chem.202001108
日期:2020.8.17
The enantioselectivesynthesis of α‐thiocarboxylic acids by biocatalytic dynamic kinetic resolution (DKR) of nitrile precursors exploiting nitrilase enzymes is described. A panel of 35 nitrilase biocatalysts were screened and enzymes Nit27 and Nit34 were found to catalyse the DKR of racemic α‐thionitriles under mild conditions, affording the corresponding carboxylic acids with high conversions and
leads ((R)-(+)-hyoscyamine and (p-chlorophenyl)propionic acid alpha-tropanyl ester), which show analgesic and nootropic activities as a consequence of increased central presynaptic ACh release, are reported. 2-Phenoxy- and 2-(phenylthio)alkanoic acid esters showed the best results. Several members of these classes possess analgesic properties which are comparable to that of morphine and at the same time