activities and have attracted significant synthetic attention. The preparation of analogues is actively pursued; however, they are structurally challenging, and more direct and modular methods for their synthesis are desirable. To this end, the utility of a bifunctional triketopiperazine building block for the straightforward synthesis of ETPs is reported. A modular strategy consisting of enolate alkylation
表二
硫代二酮
哌嗪类(ETP)具有非常多样的
生物学活性,并引起了合成方面的极大关注。积极进行类似物的制备;然而,它们在结构上具有挑战性,并且需要更直接和模块化的方法来合成它们。为此,报道了双功能三酮
哌嗪结构单元用于ETP的直接合成的效用。由烯醇化烷基化然后进行位点选择性亲核试剂加成组成的模块化策略使得能够精确合成(±)-透明质酸和一系列类似物。