Issue 2, 2018

Total syntheses of pyrroloazocine indole alkaloids: challenges and reaction discovery

Abstract

Lapidilectines, grandilodines, lundurines and tenuisines are indole alkaloids, isolated from plants of Kopsia genus. They feature a common indole-fused pyrroloazocine core, whose construction poses a significant synthetic challenge. In this review, we discuss the reported strategies for the total synthesis of this family of alkaloids with a focus on the different methods used for the construction of spiro[cyclohexane-2-indoline] and indole-pyrroloazocine intermediates, introduction of indole-fused cyclopropane as well as other new methodologies uncovered in the course of the total syntheses. In closing, the existing hypothesis of the biosynthetic origin and relationships of the pyrroloazocine indole alkaloids are presented.

Graphical abstract: Total syntheses of pyrroloazocine indole alkaloids: challenges and reaction discovery

Article information

Article type
Review Article
Submitted
31 Aug. 2017
Accepted
23 Okt. 2017
First published
24 Okt. 2017
This article is Open Access
Creative Commons BY-NC license

Org. Chem. Front., 2018,5, 273-287

Total syntheses of pyrroloazocine indole alkaloids: challenges and reaction discovery

M. S. Kirillova, F. M. Miloserdov and A. M. Echavarren, Org. Chem. Front., 2018, 5, 273 DOI: 10.1039/C7QO00786H

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