Abstract

Iodine monobromide has been found to be an efficient reagent for the conversion of both ‘armed’ and ‘disarmed’ thioglycosides (SMe, SPr i , SPh) into glycosyl bromides. This reagent is compatible with most common protecting groups, and O-glycosidic linkages. The additional potency of IBr, compared to iodine, as an iodonium ion source also permits the glycosylation of sugar alcohols by ‘disarmed’ glycosyl bromides and thioglycosides.

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