Harpagide is a class of iridoid glycoside isolated from Scrophularia cryptophila and has antiparasitic activity, which exhibits good in vitro trypanocidal activities against African trypanosomes (T.b. rhodesiense) with an IC50 of 21 μg/mL. Harpagide exerts significant antileishmanial activity against L. donovani with an IC50 value of 2.0 μg/mL. Harpagide also possess significant anti-inflammatory activities[1][2].
Harpagide shows cytotoxic activity over 50% in a concentration of 90 μg/mL, Harpagide on the A431 and HeLa cell lines. The cytotoxic effect of Harpagide on the MCF7 cell line in a concentration of 90 μg/mL[3].
[1]. Tasdemir D, et al. Evaluation of antiprotozoal and antimycobacterial activities of the resin glycosides and the other metabolites of Scrophularia cryptophila. Phytomedicine. 2008 Mar;15(3):209-15. [2]. Zhang L, et al. Effects of β-glucosidase hydrolyzed products of harpagide and harpagoside on cyclooxygenase-2 (COX-2) in vitro. Bioorg Med Chem. 2011 Aug 15;19(16):4882-6. [3]. HÁznagy-Radnai E, et al. Cytotoxic activities of Stachys species. Fitoterapia. 2008 Dec;79(7-8):595-7.