Diastereofacial differentiation of the vescalagin-derived benzylic cation

5 Diastereofacial differentiation of the vescalagin-derived benzylic cation 

Starting from vescalagin (34), all of the condensation reactions we performed using various carbon-, oxygen-, and sulfur-based nucleophiles occurred with retention of configuration at C-1, that is, the newly formed bond is still (3-oriented (see Section 4.3). As these chemical reactions produce ellagitannin derivatives with the same Cj-configuration as that of 

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