Optical resolution methods

E Fogassy, M Nógrádi, D Kozma, G Egri… - Organic & …, 2006 - pubs.rsc.org
Despite the large number of elaborate enantioselective syntheses for the preparation of a
single enantiomer to achieve industrial and scientific goals, the separation and purification …

Synthesis of carbohydrate-centered oligosaccharide mimetics equipped with a functionalized tether

M Dubber, TK Lindhorst - The Journal of organic chemistry, 2000 - ACS Publications
Synthetic glycoclusters have gained substantial attention as mimetics of multivalent
glycoconjugates. For their proposed glycobiological applications, it is advantageous to …

Kinetic resolution of α‐substituted Alkanoic acids promoted by homobenzotetramisole

X Yang, VB Birman - Chemistry–A European Journal, 2011 - Wiley Online Library
A new method for catalytic nonenzymatic kinetic resolution of α‐substituted alkanoic acids
has been developed, which relies on their activation with DCC followed by enantioselective …

Nitrile biotransformations for the practical synthesis of highly enantiopure azido carboxylic acids and amides,'click'to functionalized chiral triazoles and chiral β-amino …

DY Ma, DX Wang, QY Zheng, MX Wang - Tetrahedron: Asymmetry, 2006 - Elsevier
Under very mild conditions, biotransformations of racemic azido nitriles using Rhodococcus
erythropolis AJ270, a nitrile hydratase/amidase-containing microbial whole-cell catalyst …

Synthesis and enzymatic resolution of Cα-dialkylated α-azido carboxamides: new enantiopure α-azido acids as building blocks in peptide synthesis

M Jost, T Sonke, B Kaptein, QB Broxterman… - Synthesis, 2005 - thieme-connect.com
Abstract α-Azido carboxylic acids have recently emerged as versatile N-protected
equivalents for α-amino acids, especially valuable when the sterically hindered C α …

Polypeptides having α-H-α-amino acid amide racemase activity and nucleic acids encoding the same

WHJ Boesten, PC Raemakers-Franken, T Sonke… - 2003 - Google Patents
C12P41/006—Processes using enzymes or microorganisms to separate optical isomers
from a racemic mixture by reactions involving CN bonds, eg nitriles, amides, hydantoins …

[PDF][PDF] Novel developments in the chemo-enzymatic synthesis of enantiopure α-hydrogen-and α, α-disubstituted α-amino acids and derivatives

T Sonke - Appl. Environ. Microbiol, 2008 - dare.uva.nl
An industrially attractive L-specific amidase was purified to homogeneity from Ochrobactrum
anthropi NCIMB 40321 wild-type cells. The purified amidase displayed maximum initial …

[PDF][PDF] Simple Boronic Acid Based NMR Protocols for Determining the Enantiomeric Excess of Chiral Amines, Hydroxylamines and Diols

DA Tickell - 2015 - researchportal.bath.ac.uk
Three simple protocols for the determination of the enantiomeric excess of chiral amines,
hydroxylamines and diols have been developed utilising boronic acid templates. In Chapter …

Optical resolution by supercritical fluid extraction

P Molnár - 2009 - search.proquest.com
Péter Molnár Page 1 Faculty of Chemical Technology and Biotechnology OPTICAL
RESOLUTION BY SUPERCRITICAL FLUID EXTRACTION Ph.D. Dissertation Péter Molnár …

[PDF][PDF] SYNTHESE VON EFRAPEPTIN C

M Jost - 2003 - core.ac.uk
Viele Pilze produzieren Sekundärmetabolite, die als Kondensationsprodukte von
Aminosäuren aufzufassen sind und daher zu den Peptiden zählen. Ein bekanntes Beispiel …