Novel strategy to boost oral anticoagulant activity of blood coagulation enzyme inhibitors based on biotransformation into hydrophilic conjugates
作者:Tsukasa Ishihara、Yuji Koga、Kenichi Mori、Keizo Sugasawa、Yoshiyuki Iwatsuki、Fukushi Hirayama
DOI:10.1016/j.bmc.2014.09.059
日期:2014.11
The blood coagulation cascade represents an attractive target for antithrombotic drug development, and recent studies have attempted to identify oral anticoagulants with inhibitory activity for enzymes in this cascade, with particular attention focused on thrombin and factor Xa (fXa) as typical targets. We previously described the discovery of the orally active fXa inhibitor darexaban (1) and reported
凝血级联代表了抗血栓药物开发的有吸引力的靶标,最近的研究已尝试鉴定出对该级联中的酶具有抑制活性的口服抗凝剂,尤其关注凝血酶和凝血因子Xa(fXa)作为典型靶标。我们先前描述了口服活性fXa抑制剂darexaban(1)的发现,并报告了独特的特征,即化合物1迅速转化为葡糖醛酸YM-222714(2)口服后。在这里,我们提出了一种发现口服活性抗凝剂的新策略,该策略基于将非-抑制剂生物转化为相应的偶联物,从而通过增加亲水性来增强离体抗凝活性。利用计算分子建模来选择模板支架并设计取代点以安装潜在的官能团进行缀合。该策略导致了对苯酚衍生的fXa抑制剂ASP8102(14)的鉴定,该抑制剂通过口服给药生物转化为相应的葡糖醛酸(16)后表现出很高的抗凝活性。