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Semisynthesis of Kopsidine a and B via a Polonovski-Potier Reaction

 

作者: Christiane Kan-fan,   Jean-Charles Quirion,   Henri-Philippe Husson,  

 

期刊: Natural Product Letters  （Taylor Available online 1993）
卷期: Volume 3, issue 4  

页码: 291-298

 

ISSN:1057-5634

 

年代: 1993

 

DOI:10.1080/10575639308043879

 

出版商: Taylor & Francis Group

 

关键词: Aspidofractinine;dihydroindole alkaloids;kopsidine A and B;Polonovski-Potier reaction

 

数据来源: Taylor

 

摘要:

Kopsidine A4aand B4bwere synthesised from kopsingine N-oxide via a biomimetic Polonovski-Potier reaction. 1,4-Addition of CH3OH or C2H5OH on the intermediate iminium salts, followed by 1,2-addition of the C-17 hydroxyl function produced the expected alkaloids.

 

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