Dimeric Polyphenols to Pave the Way for New Antimalarial Drugs
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Because of the threat of resistant , new orally active antimalarials are urgently needed. Inspired by the structure of ellagic acid, exhibiting potent and antiplasmodial effects, polyphenolic structures possessing a similar activity-safety profile were synthesized. Indeed, most exhibited a marked effect (IC < 4 μM) on resistant , without any detrimental effects reported during the toxicity assays (hemolysis, cytotoxicity, ). In addition, they possessed a greater hydrosolubility (from 7 μM to 2.7 mM) compared to ellagic acid. Among them, 30 is the most promising for antimalarial purposes since it displayed a significant parasitaemia reduction after oral administration in mice (50 mg kg) compared to the orally ineffective ellagic acid. In conclusion, our investigations led to the identification of a promising scaffold, which could bring new insights for malaria treatment.
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