An efficient two-step access to C-glycosyl juglones, promising synthetic intermediates toward aryl C-glycoside antibiotics, has been developed based on (1) the O → C-glycoside rearrangement and (2) the regioselective cycloaddition of α-alkoxybenzyne and α-oxyfuran.
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Matsumoto et al. (1995) studied this question.
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