A viable approach for the selective synthesis of the 4→6-linked catechin dimers is described. The regioselective union of an acyclic catechin precursor (seco-catechin) and an electrophilic catechin unit was achieved. Subsequent pyran cyclization constructed the requisite 4→6-linked dimeric structure. This method would serve as a facile method, accessing the 4→6-linked oligocatechins.
描述了一种选择性合成4→6-连接的儿茶素二聚体的可行方法。通过无环儿茶素前体(seco-儿茶素)和亲电性儿茶素单元的区域选择性结合实现。随后的吡喃环化构建了必需的4→6-连接的二聚体结构。这种方法将作为一种简便的方法,用于获得4→6-连接的寡儿茶素。