Abstract
Reactions of glycosyl isothiocyanates (1a, b, c) with diamines such as o-phenylenediamine, 2, 3-diaminopyridine or 5, 6-diamino-1, 3-dimethyluracil gave the corresponding glycosyl thioureides in good yields. Glycosyl thioureides were converted into N-glycosylaminobenzimidazoles (5a, b, c), N-glycosyl-3-deazapurine (6a) or N-glycosylaminotheophyllines (7a, b, c) in excellent yields through a cyclodesulfurization reaction.
