Synthesis, biological evaluation, and molecular modeling of 3,5-substituted-N1-phenyl-N4,N4-di-n-butylsulfanilamides as antikinetoplastid antimicrotubule agents
作者:Tesmol G. George、Molla M. Endeshaw、Rachel E. Morgan、Kiran V. Mahasenan、Dawn A. Delfín、Mitali S. Mukherjee、Adam J. Yakovich、Jean Fotie、Chenglong Li、Karl A. Werbovetz
DOI:10.1016/j.bmc.2007.06.042
日期:2007.9
Dinitroanilines are of interest as antiprotozoal lead compounds because of their selective activity against the tubulin of these organisms, but concern has been raised due to the potentially mutagenic nitro groups. Analogues of N-1 -phenyl-3,5-dinitro-N-4,N-4-di-n-butylsulfanilamide (GB-II-150, compound 2b), a selective antimitotic agent against African trypanosomes and Leishmania. have been prepared where the nitro groups are replaced with amino, chloro, cyano, carboxylate, methyl ester, amide, and methyl ketone moieties. Dicyano compound 5 displays IC50 values that are comparable to 2b against purified leishmanial tubulin assembly (6.6 vs 7.4 mu M) Trvpanosoma brucei brucei growth in vitro (0.26 vs 0.18 mu M), Leishmania donovani axenic amastigote growth in vitro (4.4 vs 2.3 mu M), and in vitro toxicity against Vero cells (16 vs 9.7 mu M). Computational studies provide a rationale or the antiparasitic order of activity of these analogues and further insight into the role of the substituents at the 3 and 5 positions of the sulfanilamide ring. (c) 2007 Elsevier Ltd. All rights reserved.