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Synthesis 2005(20): 3502-3504  
DOI: 10.1055/s-2005-918418
SHORTPAPER
© Georg Thieme Verlag Stuttgart · New York

The First Synthesis of a Diynone from Echinacea pallida

George A. Kraus*, Jaehoon Bae, Jessica Schuster
Department of Chemistry, Iowa State University, Ames IA 50011, USA
e-Mail: gakraus@iastate.edu;
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Publication History

Received 9 April 2005
Publication Date:
12 October 2005 (online)

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Abstract

In order to provide an authentic standard and to generate pure material for biological testing, an efficient synthetic route to 1 was developed. This represents the first total synthesis of a major bioactive diynone from E. pallida.

Key words

diynones - selective alkyne reduction - coupling reaction - selective desilylation