Results 61 to 70 of about 1,601,441 (195)
Investigation of peptoid chiral stationary phases varied in absolute configuration
, 2013 Based on chiral N-(1-phenylethyl) glycines, a series of peptoid chiral stationary phases (CSPs) terminated with achiral alkyl group (diisopropyl, t-butyl or n-butyl) and varied in absolute configuration of selector were investigated with nine axially ...
Yu, Hui +6 more
core +1 more source
Effects of Temperature and Mobile Phase Condition on Chiral Recognition of Poly(l-phenylalanine) Chiral Stationary Phase [PDF]
, 2011 Characteristics of the chiral stationary phase with poly(l-phenylalanine) peptide selector, which was in α-helical state, was reported. Since environmental factors affect peptide conformation, the changes in enantioselectivity were examined depending on ...
Ohba, Yoshihito +13 more
core +1 more source
Angewandte Chemie International Edition, EarlyView.A genome analysis revealed the presence of many bacterial‐type terpene synthases in springtails. Four enzymes from Sinella curviseta were functionally characterised, resulting in the isolation of several compounds including sinellene ether, the first diterpene ether identified from a terpene synthase that represents a novel skeleton.
Min Wang +5 more
wiley +1 more source
Investigations of polysaccharide carbamate-coated chiral stationary phases [PDF]
This thesis describes work carried out in order to increase knowledge concerning the influence of support structure and support surface chemistry on the enantioselectivity of cellulose tris(phenylcarbamate)-coated phases using high-performance liquid ...
Grieb, Sally Jane
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Improvement of peptoid chiral stationary phases by modifying the terminal group of selector
, 2012 The role of a terminal group of a peptoid selector in a chiral separation was investigated. Six chiral stationary phases (CSPs) with the terminal groups replaced by achiral alkyl groups (n-butyl, t-butyl and diisopropyl) and chiral groups ((1R, 2R)-2 ...
Yu, Hui +7 more
core +1 more source
Determination of Enantiomers of Deschloroketamine and Its Metabolites in Wistar Rat Brains. [PDF]
J Sep SciAlthough supercritical fluid chromatography coupled to mass spectrometry efficiently resolved deschlorketamine and its metabolites, the parent drug must have been quantified by capillary zone electrophoresis. ABSTRACT Deschloroketamine (DXE) is a dissociative new psychoactive substance whose enantiomers and metabolites may exhibit distinct ...
Paškanová N +6 more
europepmc +2 more sources
Chemistry – A European Journal, EarlyView.Quinolin‐4‐ones were converted to chloroquinolinium salts, allowing formation of axially chiral aminoquinolinium salts via an enantioretentive SNAr reaction with a variety of amine nucleophiles. The salts have a high rotational barrier, with a racemization half‐life of ∼1000s of years.
Darren Holmes +5 more
wiley +1 more source
Chiral Pyrazolinylidene Complexes for Asymmetric Catalysis
Chemistry – A European Journal, EarlyView.The synthesis and application of pyrazolin‐5‐ylidene NHC chiral‐at‐ruthenium catalysts is reported. The strong donating pyrazolin‐5‐ylidene ligands led to highly electron rich ruthenium complexes, which showed excellent catalytic activity and enantioselectivity in the intramolecular aziridination of an alkene.
Felix Möller +6 more
wiley +1 more source
Molecules, 2016 Chromatographic separation of several sets of aromatic position isomers on three cellulose- and one amylose-based chiral stationary phases was performed to evaluate the potential of a polysaccharide-based chiral stationary phase (CSP) in the separation ...
Tohru Shibata +3 more
doaj +1 more source
Comparison of various chiral stationary phases for the chromatographic separation of chiral pharmaceuticals [PDF]
, 2009 Many pharmaceuticals contain active ingredients that have more than one stereoisomer. An important concern is the recognition that these different stereoisomers do not necessarily have identical, or even desirable biological activity.
Layton, Sherry E. +1 more
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