Abstract
The Lewis acid mediated self-condensation of an epigallocatechin gallate derivative was examined. We found that AgOTf as a Lewis acid and diethylene glycol as a leaving group at C-4 position afforded a dimeric epigallocatechin gallate derivative in a moderate yield. The condensed product was applied to the synthesis of prodelphinidin B2 3,3′′-digallate.
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