Diaminotrehalose-capped ß-cyclodextrin, a new member of hemispherodextrins: synthesis, thermodynamic and spectroscopic characterization and its exploitation in chiral electrokinetic chromatography.

ABSTRACT

The diaminotrehalose-capped derivative of ß-CD, a new member of hemispherodextrins, was synthesized and characterized by NMR spectroscopy. Its protonation constants were determined by potentiometry, and the inclusion of both the enantiomers of dansyl-phenylalanine was investigated by NMR spectroscopy. Its stereoselective properties were exploited in electrokinetic chromatography by separating four enantiomeric pairs of dansyl derivatives of amino acids.