Abstract
A highly water-soluble new cyclodextrin (CD) derivative 2-O-acetonyl-2-O-hydroxypropyl-β-CD (2-AHP-β-CD) was synthesized and tested as an effective chiral selector for the capillary zone electrophoretic resolution (Rs) of several basic and acidic analytes. The primary purpose of the research was to explore the capability of the 2-AHP-β-CD as chiral selectors on comparison with the neutral CDs such as β-CD, DM-β-CD and HP-β-CD. Substitution with 2-O-acetonyl-2-O-hydroxypropyl group at the secondary hydroxyl sites of the CD is aimed at influencing the magnitude and selectivity of analyte–CD interactions. The chiral resolution was strongly influenced by the concentration of the CDs and buffer pH. 2-AHP-β-CD showed the best enantiomer resolution properties among the tested compounds, while the other CDs showed inferior or no performances at all.
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