title: Dipeptides of O-methyl-L-threonine as potential antimalarials.
abstract: L-Leucyl-O-methyl-L-threonine, O-methyl-L-threonyl-L-leucine, and O-methyl-L-threonyl-O-methyl-L-threonine were prepared and compared with O-methyl-L-threonine and L-leucine for antimalarial activity against Plasmodium berghei in mice. O-Methyl-L-threonine significantly prolonged survival time at doses of 160, 320, and 640 mg/kg. O-Methyl-L-threonyl-O-methyl-L-threonine was less active, significantly prolonging survival time only at 640 mg/kg. L-Leucine, as well as the other two dipeptides, exhibited no activity in this test.
mesh_terms: D000818:Animals; D000962:Antimalarials / Q000138:chemical synthesis* / Q000627:therapeutic use; D004151:Dipeptides / Q000138:chemical synthesis / Q000494:pharmacology / Q000627:therapeutic use; D008288:Malaria / Q000188:drug therapy; D051379:Mice; D010962:Plasmodium berghei; D013912:Threonine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology / Q000627:therapeutic use
chemical_list: D000962:Antimalarials; D004151:Dipeptides; D013912:Threonine