Chromatographic resolution of the chiral isomers of several β-blockers over cellulose tris(3,5-dimethylphenylcarbamate) chiral stationary phase

Abstract

The optical resolution of seven β-blockers which have in common the N- isopropyl-3-aryloxy-2-hydroxypropylamine moiety was carried out by HPLC using the cellulose tris(3,5-dimethylphenylcarbamate) chiral stationary phase to quantitatively characterize the enantioselectivity of these compounds. The capacity factors and separation factors at different column temperature were determined with some qualitative trends derived. A compensation effect was observed for these compounds where there exists an approximately linear relationship between the enantiomeric differences in enthalpic and entropic energies.