Title of article
Preparation of 3,5-bis-(β-d-glycopyranosyl)-1,2,4-thiadiazoles from C-(β-d-glycopyranosyl)thioformamides
Author/Authors
Erzsébet ?sz، نويسنده , , Katalin Czifr?k، نويسنده , , Tam?s Deim، نويسنده , , L?szl? Szil?gyi، نويسنده , , Attila Bényei، نويسنده , , L?szl? Soms?k، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2001
Pages
6
From page
5429
To page
5434
Abstract
Acylated C-glycopyranosyl thioformamides of d-gluco, d-galacto, and d-xylo configuration were obtained by treating the corresponding glycosyl cyanides with hydrogen sulfide in the presence of triethylamine. The thioformamides gave 3,5-bis-(β-d-glycopyranosyl)-1,2,4-thiadiazoles in reactions with potassium bromate and sodium dithionite in dichloromethane–water biphasic solvent mixture. Deprotected derivatives were prepared by Zemplén deacylation.
Keywords
Carbohydrates , 1 , Oxidation , 2 , 4-thiadiazole , Thioamide , Bromination
Journal title
Tetrahedron
Serial Year
2001
Journal title
Tetrahedron
Record number
1082137
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