Journal ArticleDOI
A study of 13CH coupling constants in hexopyranoses
Klaus Bock,Christian Pedersen +1 more
TLDR
In this article, the direct coupling constants between the anomeric carbon atoms and protons {1J[13C-H(1)]} were found to be ca. 160 in the β-anomers and ca. 170 Hz in the α-anomer; the difference of ca. 10 Hz between pairs of anomers was found in almost all cases.Abstract:
Proton decoupled and undecoupled 13C n.m.r. spectra have been measured on a number of hexopyranoses. The direct coupling constants between the anomeric carbon atoms and protons {1J[13C–H(1)]} were found to be ca. 160 in the β-anomers and ca. 170 Hz in the α-anomers; the difference of ca. 10 Hz between pairs of anomers was found in almost all cases. Chemical shifts and 1J(13CH) values of the other carbon atoms in the pyranose rings were also measured.read more
Citations
More filters
Journal ArticleDOI
NMR spectroscopy in the structural elucidation of oligosaccharides and glycosides.
TL;DR: The potential of one- and two-dimensional NMR techniques for the identification of individual sugar residues, their anomeric configuration, interglycosidic linkages, sequencing and the site of any appended group in establishing the structures of naturally occurring oligosaccharides and glycosides is presented.
Book ChapterDOI
Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Monosaccharides
Klaus Bock,Christian Pedersen +1 more
TL;DR: An overview of the 13 Carbon-Nuclear magnetic resonance (13 C-NMR) spectroscopy of monosaccharides can be found in this paper, where an almost complete collection of 13 C- NMR chemical shifts of polysaccharides, their methyl glycosides, and acetates is presented.
Journal ArticleDOI
A computer-assisted structural analysis of regular polysaccharides on the basis of 13C-n.m.r. data.
Grigory M. Lipkind,Alexander S. Shashkov,Yuriy A. Knirel,Evgeny V. Vinogradov,Nikolay K. Kochetkov +4 more
TL;DR: A computerised approach to the structural analysis of unbranched regular polysaccharides is described, which is based on an evaluation of the 13C-n.r.m. spectra for all possible primary structures within the additive scheme starting from the chemical shifts of the13C resonances of the constituent monosaccharides and the average values of the glycosylation effects.
Journal ArticleDOI
Carbon-13 NMR spectroscopy of steroidal sapogenins and steroidal saponins
TL;DR: The 13 C NMR chemical shifts of 130 naturally occurring steroidal sapogenins and saponin derivatives published up to 1983 are listed and a number of methods for signal assignment are explained as discussed by the authors.
Related Papers (5)
Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Monosaccharides
Klaus Bock,Christian Pedersen +1 more
A simple and rapid method for the permethylation of carbohydrates
Ionel Ciucanu,Francisc Kerek +1 more