Knutsen SH, Grasdalen H. The use of neocarrabiose oligosaccharides with different length and sulphate substitution as model compounds for 1H-NMR spectroscopy.
Carbohydr Res 1992;
229:233-44. [PMID:
1394288 DOI:
10.1016/s0008-6215(00)90573-1]
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Abstract
The high-field 1H-NMR spectra of various carrageenan oligosaccharides at room temperature are given. The assignments were faciliated by the use of proton double-quantum coherence (DQCOSY) and 1H-13C chemical shift correlation 2D NMR spectroscopy, and by comparing high-field 1H-NMR spectra of various 4-sulphated oligosaccharides of the neocarrabiose type. The effects of anomeric configuration on the 1H resonances on the same or neighbouring units are discussed. The 13C-NMR shift data are given for the tetrasaccharide of kappa-carrageenan.
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