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
2-(4-R-Phenoxy/phenylthio)alkanoic esters of l-lupinine
作者:Anna Sparatore、Fabio Sparatore
DOI:10.1016/s0014-827x(01)01036-9
日期:2001.4
Considering the great pharmacological interest in phenoxy/phenylthioalkanoic esters of open-chain or cyclic aminoalcohols, a set of ten such esters of lupinine was prepared. Initially, their ability to displace [H-3]QNB from rat brain preparation was investigated. With the exception of two, all the prepared esters exhibited good affinity to muscarinic receptors (on a non-selective basis), with pK(i) in the range 6.67-7.68. (C) 2001 Elsevier Science S.A. All rights reserved.
Fawcett et al., Annals of Applied Biology, 1955, vol. 43, p. 342,343, 344