Building Blocks for the Preparation of Enantiomerically Pure Drugs Containing a Phenylalkylamine Moiety. Synthesebausteine zur Herstellung enantiomerenreiner Arzneistoffe mit Phenylalkylamin-Partialstruktur
作者:Franz Bracher、Thomas Litz
DOI:10.1002/ardp.19943270907
日期:——
The enantiomers of chiral drugs may exhibit distinctly different pharmacokinetic and pharmacodynamic properties. Thus, the application of pure enantiomers is desirable in most cases. Therefore, it is necessary to know which enantiomer is the more advantageous one and to work out an economical large scale synthesis of this pure enantiomer. Biocatalytic transformations of prochiral compounds provide
Asymmetric transesterification of secondary alcohols catalyzed by feruloyl esterase from Humicola insolens
作者:Nikos S. Hatzakis、Ioulia Smonou
DOI:10.1016/j.bioorg.2005.05.002
日期:2005.8
A new asymmetric transesterification of secondary alcohols catalyzed by feruloyl esterase from Humicola insolens has been found. Although alcohols are not the natural substrates for this enzyme, a high R enantioselectivity was observed. Stereochemical studies showed that variations in substrate structure lead to strong variations in enantioselectivity. The highest enantioselectivities are obtained when the beta-carbon of the secondary alcohol is tertiary or quaternary. (c) 2005 Elsevier Inc. All rights reserved.
WALBORSKY, H. M.;MURARI, M. P., CAN. J. CHEM., 1984, 62, N 11, 2464-2470