Novel imidazole-based combretastatin A-4 analogues: Evaluation of their in vitro antitumor activity and molecular modeling study of their binding to the colchicine site of tubulin
摘要:
The in vitro antitumor activity of novel combretastatin-like 1,5- and 1,2-diaryl-1H-imidazoles was evaluated against the NCI 60 human tumor cell lines panel. Compounds 2d and 2g proved to be more cytotoxic than CA-4 in tests involving their evaluation over a 10(-4)-10(-8) range. Docking experiments showed a good correlation between the MG_MID Log GI(50) values of all these compounds and their calculated interaction energies with the colchicine binding site of alpha beta-tubulin. (c) 2006 Elsevier Ltd. All rights reserved.
Regioselective Synthesis of 1,5-Diaryl-1<i>H</i>-imidazoles by Palladium-Catalyzed Direct Arylation of 1-Aryl-1<i>H</i>-imidazoles
作者:Fabio Bellina、Silvia Cauteruccio、Luisa Mannina、Renzo Rossi、Stéphane Viel
DOI:10.1021/jo050274a
日期:2005.5.1
A variety of 1,5-diaryl-1H-imidazoles have been regioselectively synthesized by direct coupling of 1-aryl-1H-imidazoles with aryl iodides or bromides in DMF in the presence of CsF as the base and a catalyst precursor consisting of a mixture of Pd(OAc)2 and AsPh3. The data obtained in this synthetic study support a reaction mechanism involving an electrophilic attack of an arylpalladium(II) halide species