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Acetate-methyl signals in the NMR spectra of peracetylated derivatives of chondroitin sulfates and their desulfated derivatives

✍ Scribed by Shigehiro Hirano

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
370 KB
Volume
2
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Chondroitin 4‐sulfate (Ch4S), chondroitin 6‐sulfate (Ch6S), dermatan sulfate, chondroitin and desulfated dermatan sulfate were peracetylated and the derivatives isolated in yields of 45 to 88%. Acetate‐methyl signals in the NMR spectra of these derivatives in D~2~O were analyzed using a correlation of the chemical shifts to the orientations. The lC conformation of hexopyranosiduronic acid moieties was estimated in these derivatives. No significant change of the chemical shifts was observed with the NMR spectra measured in D~2~O, in 7 M urea solution, in the various diluted solutions, and in the temperature range of 2 to 95° in D~2~O.

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