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Semisynthetic Derivatives of Sesquiterpene Lactones by Palladium-Catalyzed Arylation of the α-Methylene-γ-lactone Substructure

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posted on 18.09.2009, 00:00 by Changho Han, Francis J. Barrios, Mark V. Riofski, David A. Colby
The palladium-catalyzed arylation of different α-methylene-γ-lactone-containing sesquiterpene lactones was shown to produce E-olefin coupling products selectively in moderate to excellent yields. Biological evaluation of these semisynthetic sesquiterpene lactone derivatives in HeLa cells showed interesting antiproliferative profiles and provided initial structure−activity data.