Reactions of various aminoquinazolin-4(3H)-ones with monosaccharides in the presence of a catalytic amount of glacial acetic acid afforded the corresponding N-glycosylamines as a mixture of b- and a-anomers. Acetylation of this mixture gave the corresponding b-glycoside acetates. However, b-glycoside acetates could be obtained directly from reactions of per-O-acetyl-b-D-glucosyl bromides with quinazolin-4(3H)-one derivatives which deacetyalted to the corresponding b-glycosides. A series of S-glycosides have been synthesised from reaction of per-O-acetyl-b-D-glucosyl bromides with quinazolinethiones.
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El‐Hiti et al. (2005) studied this question.
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