The Synthesis of 6H-Pyrido[4,3-b]carbazoles

Malcolm SAINSBURY

doi:10.1055/s-1977-24433

Synthesis 1977; 1977(7): 437-448
DOI: 10.1055/s-1977-24433

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The Synthesis of 6H-Pyrido[4,3-b]carbazoles

Malcolm SAINSBURY^*

^*School of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, England

Abstract

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The development of synthetic routes to the pyrido[4,3-b]carbazole system is reviewed. This system is of interest as some examples are naturally occurring plant alkaloids and as some derivatives of this system show promise as potential anti-cancer drugs. Yields and reaction conditions of the syntheses are examined critically with the aim of highlighting the most expeditious pathways to the widest range of derivatives. 1. Introduction 2. Classification of the Synthetic Routes 3. Syntheses via Fischer Indolisation Reactions 4. Syntheses from Carbazole Derivatives 5. Syntheses from Indole Precursors 6. Conclusions and Biological Results

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