Intramolecular C-arylation of benzylated sugars. The unexpected double C-glycosideration of tris-O-m-methoxybenzyl-β-D-ribofuranose derivatives

Abstract
Upon treatment with tin(IV) chloride, D-ribofuranose derivatives bearing activated O-benzyl groups were found to undergo single or double intramolecular C-arylation, with m-methyl- and m-methoxy-substituted benzyl groups respectively.

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