Rational design, synthesis and QSAR study of vasorelaxant active 3-pyridinecarbonitriles incorporating 1H-benzimidazol-2-yl function
作者:Zeinab M. Nofal、Aladdin M. Srour、Wafaa I. El-Eraky、Dalia O. Saleh、Adel S. Girgis
DOI:10.1016/j.ejmech.2013.01.042
日期:2013.5
ecarbonitriles 4a–r were prepared via either regioselective reaction of 3-aryl-1-(1H-benzimidazol-2-yl)-2-propen-1-ones 3 with malononitrile or ylidenemalononitriles 6 with 2-acetyl-1H-benzimidazoles 1 in the presence of sodium alkoxide in the corresponding alcohol. All the synthesized compounds showed significant vasodilation properties using isolated thoracic aortic rings of rats pre-contracted with
通过3-芳基-1-(1 H-苯并咪唑-2的区域选择性反应)制备了各种2-烷氧基-4-芳基-6-(1 H-苯并咪唑-2-基)-3-吡啶腈4a – r。在相应的醇中存在烷氧基钠的情况下,将丙二腈与(1-基)-2-丙-1-酮3与丙二腈或与亚甲基丙二腈6与2-乙酰基-1 H-苯并咪唑1。使用盐酸去甲肾上腺素标准技术预收缩的大鼠离体胸主动脉环,所有合成的化合物均显示出显着的血管舒张特性。化合物4d,4p,4l和4f与盐酸哌唑嗪相比,该药物具有显着的活性,盐酸哌唑嗪在本研究中用作参考标准。QSAR研究显示了良好的预测性和统计学意义的3描述符模型(r 2 = 0.913,[R调整后的2个=0.8808, [R预言2个=0.7911)。