Causal prophylactic activity of a new 8-aminoquinoline derivative against Plasmodium cynomolgi B in rhesus monkeys.

A new 8-aminoquinoline derivative, N1-(3-acetyl-4-5-dihydro-2 furanyl)-N4-(6-methoxy-8-quinolinyl)1,4-pentanediamine, synthesized at CDRI, Lucknow, showed causal prophylactic activity at 3.16 mg/kg x 3 doses (on day -1, 0 and +1) against sporozoite induced P. cynomolgi B infection in rhesus monkeys. Single dose of 10 mg/kg of this compound on day 0 also prevented establishment of patient infection. Activity of the compound was comparable to that of primaquine (with causal prophylactic activity at 1.78 mg/kg in three day test and at 10.0 mg/kg in single dose test).