Proton NMR Spectra of Peracetylated Derivatives of Some Pentopyranosides in the Presence of a Europium Shift Reagent
- 1 January 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Agricultural and Biological Chemistry
- Vol. 43 (1) , 95-100
- https://doi.org/10.1080/00021369.1979.10863388
Abstract
Proton NMR spectra of peracetylated methyl and phenyl glycosides of d-xylopyranose and l-arabinopyranose were measured in the presence of a europium shift reagent. The signals of H-2, H-3, and H-4 were more markedly shifted than others by the addition of the reagent and, in particular, the bound chemical shifts for H-4 in the α-d- and β-l-anomers and for H-3 in the β-d- and α-l-anomers were shown to be pronouncedly greater than those in the corresponding hexopyranosides. The lanthanide-induced shifts of most protons in equimolar mixtures of two sugars were also measured, and preferential coordination of the β-d-xylo- and β-l-arabinopyranosides with the europium was found to occur in comparison with the coexisting α-anomers or the corresponding hexopyranosides.This publication has 1 reference indexed in Scilit:
- Proton NMR Spectra of Peracetylated D-Galactopyranose Derivatives in the Presence of Lanthanide Shift ReagentsThe Journal of Biochemistry, 1977