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. 2002 Aug;68(8):750-1.
doi: 10.1055/s-2002-33799.

Anti-trypanosomal activity of helenalin and some structurally related sesquiterpene lactones

Thomas J Schmidt  1 , Reto Brun, Günter Willuhn, Sami A Khalid
Affiliations

Anti-trypanosomal activity of helenalin and some structurally related sesquiterpene lactones

Thomas J Schmidt et al. Planta Med. 2002 Aug.

Abstract

The anti-trypanosomal activity of six sesquiterpene lactones (helenalin, mexicanin I, 11alpha,13-dihydrohelenalin acetate, chamissonolide, ivalin and isoalantolactone) against the African Trypanosoma brucei rhodesiense and American T. cruzi was investigated. All tested compounds were found active towards both parasites, the former being generally more sensitive. Helenalin was the most active compound in the series with IC50 values of 0.051 and 0.695 microM against T. brucei rhodesiense and T. cruzi, respectively. The low IC50 value for T. b. rhodesiense indicates that helenalin type compounds may be interesting candidates for further evaluation.

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