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DOI: 10.1055/s-0036-1588738
Total Synthesis of Camptothecins: An Update
Publication History
Received: 30 December 2016
Accepted after revision: 07 February 2017
Publication Date:
15 March 2017 (online)
![](https://www.thieme-connect.de/media/synlett/201710/lookinside/thumbnails/st-2016-a0861-a_10-1055_s-0036-1588738-1.jpg)
Abstract
Over the last few decades, considerable research efforts have been directed toward the development of effective chemical syntheses of camptothecin and its analogs. The last comprehensive review of this area was published in 2003 and many effective new methods have since been reported for the stereoselective synthesis of the camptothecin alkaloids. In this account, we have summarized most of the novel synthetic approaches developed for the synthesis of camptothecins during the last decade. We have focused on strategies for the construction of the pentacyclic ring system and the different methods used to install the chiral quaternary center on the E ring of camptothecin.
1 Introduction
2 Synthesis of Racemic Camptothecins
3 Enantioselective Synthesis of Camptothecins
3.1 Sharpless Asymmetric Dihydroxylation
3.2 Catalytic Asymmetric Cyanosilylation
3.3 Auxiliary-Induced Asymmetric Carbonyl Addition
3.4 Catalytic Asymmetric Ethylation
3.5 Asymmetric Hydroxylation
4 Conclusion
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