Abstract
A total of 80 new 2-methyl-6-ureido-4-quinolinamides were synthesized and evaluated for their antimalarial activity. Several analogs elicited the antimalarial effect at MIC of 0.25 mg/mL against the chlooquine-sensitive P. falciparum strain. The IC 50 values of the active compounds were observed to be in ng/mL range and two of the analogs have better IC 50 value than the standard chloroquine. In the in vivo assay against mdr CQ resistant P. yoelii N67/ P. yoelii nigeriensis, however, none of the compound showed complete suppression of parasitemia on day 7. One of the compounds displayed significant antibacterial effect against several strains of bacteria and was many-fold better than the standard drug gentamicin.
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