Synthesis of Indolo[2,3-<i>a</i>]pyrrolo[3,4-<i>c</i>]carbazoles by Oxidative Cyclization of Bisindolylmaleimides with a Rhodium(III)-Copper(II) Catalytic System
作者:Bernhard Witulski、Torsten Schweikert
DOI:10.1055/s-2005-869977
日期:——
A novel catalytic protocol for the synthesis of a series of indolo[2,3-a]pyrrolo[3,4-c]carbazoles based on the bimetallic system RhCl 3 .3H 2 O and Cu(OAc) 2 .H 2 O in the presence of molecular oxygen was investigated. The method was applied to the synthesis of the glycosidated fluoroindolocarbazole 3 that was recently isolated as a metabolite from feeding experiments of Saccharothrix aerocolonigenes
基于双金属体系 RhCl 3 .3H 2 O 和 Cu(OAc) 2 .H 2 O 合成一系列吲哚[2,3-a]吡咯并[3,4-c]咔唑的新催化方案研究了分子氧的存在。该方法应用于糖苷化的氟吲哚咔唑 3 的合成,该糖苷化的氟吲哚咔唑 3 最近作为一种代谢物从产气结肠糖丝菌 ATCC 39243 与氟色氨酸的喂养实验中分离出来。