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Dérivés C-glycosyliques XXIII. Radicaux libres stables dérivés de sucre Communication préliminaire

✍ Scribed by Jean M. J. Tronchet; Eva Mihaly; Michel Geoffroy

Publisher
John Wiley and Sons
Year
1975
Tongue
German
Weight
276 KB
Volume
58
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Treated with 2,3‐dimethyl‐2,3‐bis‐(hydroxylamino)‐butane, aldehydo‐dialdofuranoses (1) gave a mixture of two compounds: a 1,3‐dihydroxyimidazolidine (2) and a 1‐hydroxyimidazoline (3). Oxidation (PbO~2~) of compounds 3 gave stable free radicals having the structure of 2‐C‐Glycosyl‐4,4,5,5‐tetramethylimidazolines 1‐oxyl (4), whereas 2‐C‐Glycosyl‐4,4,5,5‐tetramethylimidazolines 3‐oxide 1‐oxyl (5) were formed by oxidation of 2. The ESR. spectra of compounds 4 and 5 establish the structure of the imidazoline part of these radicals and provide informations on the sugar moiety.

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