c-Arylglycosylation of unprotected free sugar

Abstract
Highly regio- and stereo-selective C-arylglycosylations of the protected free sugars 1–4, the unprotected methyl glycosides 6–9 and the unprotected free sugars 10 and 11 with 2-naphthol 5 are effectively realized by the combined use of TMSOTf–AgClO4(TMSOTf = trimethylsilyloxytrifluoromethanesulfonate) as a catalytic activator.

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