Quinoline esters as potential antimalarial drugs: effect on relapses of Plasmodium cynomolgi infections in monkeys

Two compounds of the quinoline ester series, WR 197236 (6-butyl-4-hydroxy-3-methoxycarbonyl-7-beta-phenoxyethoxyquinoline ) and WR 194905 (4-acetoxy-6-decyloxy-7-isopropoxy-3-methoxycarbonylquinoline++ +), exhibit anti-relapse activity against sporozoite-induced Plasmodium cynomolgi B infections in rhesus monkeys. Both the compounds have been found to be curative when given intramuscularly in 7 daily doses of 15 mg/kg, and no relapses were observed during the observation period of 120 d.