Results 51 to 60 of about 3,397 (210)

The Enantioselective Potential of NicoShell and TeicoShell Columns for Basic Pharmaceuticals and Forensic Drugs in Sub/Supercritical Fluid Chromatography

Molecules, 2023
The enantioselective potential of two macrocyclic glycopeptide-based chiral stationary phases for analysis of 28 structurally diverse biologically active compounds such as derivatives of pyrovalerone, ketamine, cathinone, and other representatives of ...
Denisa Folprechtová, Martin G. Schmid, Daniel W. Armstrong, Květa Kalíková   +3 more
doaj   +1 more source

Enhanced Enantioselective Optical Trapping Enabled by Longitudinal Mie Resonances in Silicon Nanodisks [PDF]

Nanophotonics
Longitudinal Mie resonances in silicon nanodisks, excited by an azimuthally–radially polarized beam, generate strong optical chirality gradients with minimal achiral background. Magnetic quadrupole modes enable selective enantiomer trapping, achieving predicted selectivities over 100 for |κ|≥0.03 $\vert \kappa \vert \ge 0.03$ and robust performance ...
Serrera G, Albella P.
europepmc   +2 more sources

Effectively enhancing the enantioseparation ability of β-cyclodextrin derivatives by de novo design and molecular modeling

, 2017
A novel strategy to improve the enantioseparation ability of β-cyclodextrin derivatives.
Linwei Li, Chengjun Wu, Zhen Li, Yang Ma, Tiemin Sun, Shuhao Zhou   +5 more
core   +1 more source

Chiral Stationary Phases and their Relationship with Enantiomer Structures in Enantioseparation Research of Analytical Laboratory

, 2017
Chiral stationary phases (CSPs) and molecular structure of enantiomers are two independent but related aspects in enantioseparation, which are discussed on the basis of the experimental data from the previous study.
Shun Yao
core   +1 more source

ENANTIOSEPARATION OF CHIRAL COMPOUNDS CONTAINING EXTENDED pai-ELECTRON CLOUDS

, 2022
In the last decade, planar chiral ferrocenes have attracted a growing interest in several fields, particularly in asymmetric catalysis, medicinal chemistry, chiroptical spectroscopy and electrochemistry [1].
Paola Peluso, Bezhan Chankvetadze, Nutsa Tsetskhladze, Giorgi Jibuti, Victor Mamane, Barbara Sechi, Roberto Dallocchio, Alessandro Dessì   +7 more
core  

On the effect of aqueous organic mobile phases on the enantioseparation of halogenated 4,4’-bipyridines using polysaccharide carbamate-based chiral columns

Journal of Chromatography Open
In the last decade, the contribution of halogen bond (HaB) in liquid phase enantioseparation of halogenated analytes was demonstrated by using polysaccharide-based chiral stationary phases (CSPs) and n-hexane-containing mixtures as mobile phases.
Barbara Sechi, Giorgi Jibuti, Roberto Dallocchio, Sergio Cossu, Bezhan Chankvetadze, Victor Mamane, Paola Peluso   +6 more
doaj   +1 more source

Sidechain Modulation of Responsive Metal‐Organic Framework Pore Chirality for Enhanced Enantioseparation

Angewandte Chemie International Edition, EarlyView.
[Zn2(L‐ValPyr)2] is a chiral and flexible metal‐organic framework that places the isopropyl sidechains of L‐valine inside the pores, creating accessible space in the shape of a three‐blade propeller. The framework adapts its structure to position the substituted aromatic guests in its peripheral pockets through favorable interactions with the isopropyl
Luke A. Johnson, Laurence J. Kershaw Cook, Bhupendra P. Mali, Datta Markad, Nikos Panagiotou, Dmytro Antypov, Alexandros P. Katsoulidis, Matthew J. Rosseinsky   +7 more
wiley   +1 more source

preparative HPLC enantioseparation of racemate on multigram scale

, 2020
International audienceRacemic ethyl 2,3‐dibromopropionate, commercially available at low price, is a key intermediate used in the synthesis of several heterocycle fragments, which are present in many biologically active compounds.
Pham, Hong-Ngoc, Nicolas Vanthuyne, Hong‐Ngoc Pham, Acherar, Samir, Axelle Arrault, Samir Acherar, Vanthuyne, Nicolas, Arrault, Axelle   +7 more
core   +1 more source

Improving the Sensitivity in Chiral Analysis by Capillary Electrophoresis

ELECTROPHORESIS, EarlyView.
Most recent advances for the enhancement of sensitivity in capillary electrophoresis, including off‐line and in‐capillary preconcentration techniques and their combinations, and the use of alternative detection systems to UV–Vis spectrophotometric absorption.
María Castro‐Puyana, Sandra Salido‐Fortuna, María Luisa Marina   +2 more
wiley   +1 more source

The continuing significance of chiral agrochemicals

Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source