Divergent Syntheses of Carbazole Alkaloids Clausenapin, Indizoline, Claulansine M, and Clausenaline D
作者:Yizhen Liu、Yanqin Guo、Feixiang Ji、Dong Gao、Chuanjun Song、Junbiao Chang
DOI:10.1021/acs.joc.6b00729
日期:2016.5.20
We described the first total syntheses of clausenapin, indizoline, claulansine M, and a novel synthetic route to clausenaline D via divergent method. Key steps involved TFAA-mediated intramolecular acylation to construct the carbazole core and subsequent Claisen rearrangement to generate key intermediates for further elaboration to target molecules.
我们描述了克劳萘平,吲唑啉,青草碱M的第一个总合成物,以及通过发散法合成克劳那林D的新颖合成路线。关键步骤涉及TFAA介导的分子内酰化反应,以构建咔唑核,随后进行克莱森重排,以生成关键中间体,以进一步精制目标分子。