In this study, the total syntheses of 1,3,4-trisubstituted carbazole alkaloid clausamine E was accomplished via an eight-step sequence using construction of the 1,4-dioxygenated carbazole framework based on the cyclocarbonylation between 3-iodo-2-(prop-2-enyl)indole and CO (1 atm) in the presence of tributyl(vinyl)tin and a Pd catalyst.

中文翻译：

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咔唑生物碱克劳斯敏E的全合成

在这项研究中，使用1，4-二加氧咔唑骨架的构建基于8-碘-2-（（-）之间的环羰基化，通过八步顺序完成了1,3,4-三取代咔唑生物碱克劳斯明E的总合成。在三丁基（乙烯基）锡和Pd催化剂存在下，丙-2-烯基）吲哚和CO（1个大气压）。