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Study of disaccharide conformation by one-and two-dimensional NMR spectroscopy: 1,6-anhydro-β-maltose hexaacetate

✍ Scribed by Photis Dais; Arthur S. Perlin

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
577 KB
Volume
26
Category
Article
ISSN
0749-1581

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✦ Synopsis

One

-and two-dimensional NMR spectroscopy were employed to determine the conformation of 2,3,4,6,2',3'-hexa-O-acetyl-4-O-a-D-glucopyranosyl-1',6'-anhydro-~-D-glucop~anose in acetone-d, solution. Inter-residue interproton distances, H-1-H-4' and H-1-H-Q', determined by 2D NOE experiments are commensurate with torsional angles + and $ of -10" and -20", and also of 10" and -No, about the inter-residue glucosidic bond. Computer simulation showed that, within the limits of the experimental error (ca f0.20 di) of the interproton distances determined, several sets of + and $ angles are consistent with the NMR data. These 'allowed' conformations are presented in the form of a conformational map.

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