Chiral high-performance liquid and supercritical fluid chromatographic enantioseparations of limonene-based bicyclic aminoalcohols and aminodiols on polysaccharide-based chiral stationary phases

Biomedical Chromatography : BMC
Tímea OroszIstván Ilisz

Abstract

Enantioseparation of limonene-based bicyclic 1,3-aminoalcohols and 1,3,5- and 1,3,6-aminodiols was performed by normal-phase high-performance liquid chromatographic and supercritical fluid chromatographic (SFC) methods on polysaccharide-based chiral stationary phases. The effects of the composition of the mobile phase, the column temperature and the structures of the analytes and chiral selectors on retention and selectivity were investigated by normal-phase LC and SFC technique. Thermodynamic parameters derived from selectivity-temperature-dependence studies were found to be dependent on the chromatographic method applied, the nature of the chiral selector and the structural details of the analytes. Enantiorecognition in most cases was enthalpically driven but an unusual temperature behavior was also observed: decreased retention times were accompanied by improved separation factors with increasing temperature, i.e. some entropically driven separations were also observed. The elution sequence was determined in all cases. The separation of the stereoisomers was optimized in both chromatographic modalities.

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Citations

May 22, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Robert K HofstetterAndreas Link
Mar 7, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yuan ZhaoBaoguo Sun
Jul 25, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Cuong Viet BuiHubert Hettegger

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