title: Synthesis, DNA binding and antileishmanial activity of low molecular weight bis-arylimidamides.
abstract: The effects of reducing the molecular weight of the antileishmanial compound DB766 on DNA binding affinity, antileishmanial activity and cytotoxicity are reported. The bis-arylimidamides were prepared by the coupling of aryl S-(2-naphthylmethyl)thioimidates with the corresponding amines. Specifically, we have prepared new series of bis-arylimidamides which include 3a, 3b, 6, 9a, 9b, 9c, 13, and 18. Three compounds 9a, 9c, and 18 bind to DNA with similar or moderately lower affinity to that of DB766, the rest of these compounds either show quite weak binding or no binding at all to DNA. Compounds 9a, 9c, and 13 were the most active against Leishmania amazonensis showing IC(50) values of less than 1 μM, so they were screened against intracellular Leishmania donovani, showing outstanding activity with IC(50) values of 25-79 nM. Despite exhibiting little in vitro cytotoxicity these three compounds were quite toxic to mice.
authors: Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA.
authors: Moloy
authors: M
authors: Banerjee
authors: Abdelbasset A
authors: AA
authors: Farahat
authors: Arvind
authors: A
authors: Kumar
authors: Tanja
authors: T
authors: Wenzler
authors: Reto
authors: R
authors: Brun
authors: Manoj M
authors: MM
authors: Munde
authors: W David
authors: WD
authors: Wilson
authors: Xiaohua
authors: X
authors: Zhu
authors: Karl A
authors: KA
authors: Werbovetz
authors: David W
authors: DW
authors: Boykin
mesh_terms: D000577:Amides / Q000138:chemical synthesis* / Q000378:metabolism / Q000494:pharmacology* / Q000633:toxicity; D000818:Animals; D000981:Antiprotozoal Agents / Q000138:chemical synthesis* / Q000378:metabolism / Q000494:pharmacology* / Q000633:toxicity; D002460:Cell Line; D060326:Chemistry Techniques, Synthetic; D016054:DNA, Protozoan / Q000378:metabolism*; D020128:Inhibitory Concentration 50; D007893:Leishmania donovani / Q000187:drug effects* / Q000378:metabolism; D008970:Molecular Weight; D051381:Rats
chemical_list: D000577:Amides; D000981:Antiprotozoal Agents; D016054:DNA, Protozoan