Preparation and enantioseparation of a new click derived β-cyclodextrin chiral stationary phase. 2014

Qing Fan, and Kui Zhang, and Li-wen Tian, and Jun Fan, and Sheng-run Zheng, and Wei-Guang Zhang
1Institute of Special Materials & School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China.

A new cyclodextrin-derived chiral stationary phase (denoted as CDA-CSP) was synthesized by immobilizing mono(6(A)-azido-6(A)-deoxy)-per(p-chlorophenyl carbamoylated) β-cyclodextrin derivative to alkynyl modified silica via click chemistry. This newly prepared CSP shows good enantioseparation performance for six chiral compounds (1-6), such as 4-phenyl-oxazolidine-2-thione, two kinds of aryl alcohols, substituted flavonoids and benzoin, in which baseline separation of Analytes 1-4 was achieved under the experimental conditions. The effects of column temperature, mobile phase pH and content of methanol on the enantioseparation characteristics of CDA-CSP were investigated in detail. Retention factor and resolution for Compound 3 gradually reduced with an increase of column temperature, and a good linear relationship was shown between napierian logarithm of selectivity factor and reciprocal of column temperature. In the pH range from 3.56 to 5.50, a change in pH hardly affected the resolution of Analyte 2. In addition, increasing methanol in the mobile phase resulted in rapid eluting of the analytes from the column in reversed-phase mode. The retention factors for Analytes 1 and 3 significantly decreased and their resolution showed different trends.

UI MeSH Term Description Entries
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D001573 Benzoin A white crystalline compound prepared by condensation of benzaldehyde in potassium cyanide and used in organic syntheses. This should not be confused with benzoin gum from STYRAX. 2-hydroxy-1,2-diphenylethanone,2 hydroxy 1,2 diphenylethanone
D013237 Stereoisomerism The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Molecular Stereochemistry,Stereoisomers,Stereochemistry, Molecular,Stereoisomer
D044950 Flavanones A group of FLAVONOIDS characterized with a 4-ketone. 2-Phenyl-Benzopyran-4-Ones,2 Phenyl Benzopyran 4 Ones
D047392 beta-Cyclodextrins Cyclic GLUCANS consisting of seven (7) glucopyranose units linked by 1,4-glycosidic bonds. beta Cyclodextrins
D056148 Chromatography, Reverse-Phase A chromatography technique in which the stationary phase is composed of a non-polar substance with a polar mobile phase, in contrast to normal-phase chromatography in which the stationary phase is a polar substance with a non-polar mobile phase. Chromatography, Reversed-Phase Liquid,Reversed-Phase Chromatography,Reversed-Phase Liquid Chromatography,Reverse-Phase Chromatography,Reverse-Phase Liquid Chromatography,Chromatography, Reverse Phase,Chromatography, Reversed-Phase,Reverse Phase Chromatography,Reversed Phase Chromatography
D057930 Click Chemistry Organic chemistry methodology that mimics the modular nature of various biosynthetic processes. It uses highly reliable and selective reactions designed to "click" i.e., rapidly join small modular units together in high yield, without offensive byproducts. In combination with COMBINATORIAL CHEMISTRY TECHNIQUES, it is used for the synthesis of new compounds and combinatorial libraries. Click Chemical Reactions,Click Chemical Techniques,Chemical Reaction, Click,Chemical Reactions, Click,Chemical Technique, Click,Chemical Techniques, Click,Chemistries, Click,Chemistry, Click,Click Chemical Reaction,Click Chemical Technique,Click Chemistries,Reaction, Click Chemical,Reactions, Click Chemical,Technique, Click Chemical,Techniques, Click Chemical

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