N.O.e. data after pre-irradiation of the anomeric protons and the 3JC,H values associated with the glycosidic linkages for a series of methyl beta-glycosides of trisaccharides that contain 3,4-disubstituted galactose residues have been measured. On the basis of the experimental results and theoretic
Nuclear overhauser effects and conformations of branched trisaccharide methyl β-glycosides that contain a 2,3-disubstituted galactose residue
✍ Scribed by Grigory M. Lipkind; Alexander S. Shashkov; Oleg A. Nechaev; Vladimir I. Torgov; Vladimir N. Shibaev; Nikolay K. Kochetkov
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 664 KB
- Volume
- 195
- Category
- Article
- ISSN
- 0008-6215
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✦ Synopsis
On the basis of the n.O.e. data and theoretical calculations, it was found that less than 90% of one conformer was present in aqueous solution for each of a series of trisaccharide methyl beta-glycosides with a 2,3-disubstituted galactose residue.
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The trisaccharide beta-D-Glcp-(1 --> 2)[beta-D-Glcp-(1 --> 3)]alpha-D-Manp-OMe, a model for branching regions in oligosaccharides, has been investigated by one-dimensional DPFGSE (1)H, (1)H nuclear Overhauser effect spectroscopy (NOESY) and transverse rotating-frame Overhauser effect spectroscopy (T