Design, synthesis and biological activity evaluation of novel methyl substituted benzimidazole derivatives
作者:Tianrong Zhang、Qianqian Liu、Yujie Ren
DOI:10.1016/j.tet.2020.131027
日期:2020.3
Ten new dabigatran derivatives (7a–j) with high docking scoring were designed, synthesised and biologically evaluated. The inhibitory in vitro activity of these compounds on thrombin was evaluated on the basis of preliminary activity screening results. The IC50 values of compounds 7a, 7d and 7j were 1.92, 2.17 and 1.54 nM, respectively, and are equivalent to the dabigatran (IC50 = 1.20 nM). Therefore
设计,合成和生物评价了十个对接得分高的新达比加群衍生物(7a–j)。根据初步活性筛选结果评估了这些化合物对凝血酶的体外抑制活性。化合物7a,7d和7j的IC 50值分别为1.92、2.17和1.54 nM,相当于达比加群(IC 50 = 1.20 nM)。因此,选择了活性最高的化合物7j来进一步研究大鼠的抗凝活性。化合物7j对动静脉血栓形成具有优异的体内抑制作用,抑制率为(84.19±1.14)%。在体内评估了先前工作中合成的化合物7k的抗凝血活性,其抑制率为(85.58±2.89)%。该比率几乎等于达比加群(85.07±0.61)%。结果表明,化合物7a,7d,7j和7k可作为新型抗凝血酶候选药物进行进一步研究。