作者:Alessandra Gianoncelli、Giorgio Cozza、Andrzej Orzeszko、Flavio Meggio、Zygmunt Kazimierczuk、Lorenzo A. Pinna
DOI:10.1016/j.bmc.2009.08.047
日期:2009.10
have been prepared by iodination of respective benzimidazole with iodine and periodic acid in sulfuric acid solution. Additionally several 2-substituted- and N-1-carboxymethyl-substituted derivatives of 4,5,6,7-tetraiodobenzimidazole (TIBI) were obtained. For sake of comparison, some new 4,5,6,7-tetrabromobenzimidazoles were also synthesized. The ability of the new compounds to inhibit protein kinase
通过将各自的苯并咪唑与碘和高碘酸在硫酸溶液中碘化,已经制备了一系列新的碘代苯并咪唑。另外几个2个取代基和N获得了4,5,6,7-四碘代苯并咪唑(TIBI)的-1-羧甲基取代的衍生物。为了比较,还合成了一些新的4,5,6,7-四溴苯并咪唑。已经评估了新化合物抑制蛋白激酶CK2的能力。结果表明,4,5,6,7-四碘代苯并咪唑类比四溴代类似物更有效地抑制CK2。分子建模支持的实验数据表明,四碘代苯并咪唑部分比各自的四溴和四氯化合物填充的结合腔更好。要注意的是,4,5,6,7-四碘代苯并咪唑(TIBI)是 迄今为止描述的最有效的CK2抑制剂(K i = 23 nM)之一。