Smallanthus fruticosus is a species of shrub in the family Asteraceae. It is native to the Andes (from Colombia to Bolivia).
S. fruticosus contains the cytotoxic flavone centaureidinCentaureidin, a cytotoxic flavone from Polymnia fruticosa, inhibits tubulin polymerization. John A. Beutler, John H. Cardellina, Chii M. Lin, Ernest Hamel, Gordon M. Cragg and Michael R. Boyd, Bioorganic & Medicinal Chemistry Letters, Volume 3, Issue 4, April 1993, pages 581-584, and the flavanone sakuranetin.Sakuranetin on home.ncifcrf.gov
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