Regioselective synthesis of benzimidazole thiophene inhibitors of polo-like kinase 1
作者:Keith R. Hornberger、Jennifer G. Badiang、James M. Salovich、Kevin W. Kuntz、Kyle A. Emmitte、Mui Cheung
DOI:10.1016/j.tetlet.2008.08.077
日期:2008.10
of novel 1-(2-thienyl)-benzimidazole inhibitors of polo-like kinase 1 is described. Amination of substituted 2-iodo or -bromo nitrobenzenes with a 2-aminothiophene derivative catalyzed by Pd2dba3 and XANTPHOS in the presence of excess Cs2CO3 afforded good yields of the coupled products. Subsequent reduction and cyclization of these intermediates provided the desired benzimidazole compounds.
描述了新的1-(2-噻吩基)-苯并咪唑抑制剂的马球样激酶1的区域选择性合成。在过量的Cs 2 CO 3存在下,用Pd 2 dba 3和XANTPHOS催化的2-氨基噻吩衍生物对取代的2-碘或-溴硝基苯进行胺化,可得到良好的偶联产物收率。这些中间体的随后还原和环化提供了所需的苯并咪唑化合物。