Rapid generation of novel benzoic acid–based xanthine derivatives as highly potent, selective and long acting DPP-4 inhibitors: Scaffold-hopping and prodrug study
作者:Qing Li、Liuwei Meng、Siru Zhou、Xiaoyan Deng、Na Wang、Yi Ji、Yichun Peng、Junhao Xing、Gongmei Yao
DOI:10.1016/j.ejmech.2019.07.045
日期:2019.10
various DPP-4 homologues were identified, in which the best one, compound 2f, with the IC50 value of 0.1 nM for DPP-4, showed 22-fold improvement in inhibitory activity compared to lead compound uracil 1, its activity was 45-fold more potent than alogliptin. 2e, 2f, 2i and 2k were selected for pharmacokinetic evaluation, and 2f and 2i showed the better pharmacokinetic profiles after iv administration
通过使用从我们先前报道的支架尿嘧啶到批准的药物利格列汀支架的黄嘌呤的支架跳跃策略,迅速产生了一系列结合苯甲酸部分的新的黄嘌呤衍生物2a-1。在围绕苯甲酸部分进行系统的构效关系(SAR)研究之后,确定了5种新的DPP-4抑制剂,这些抑制剂具有低皮摩尔效价范围(IC50 <1 nM),并且对多种DPP-4同源物具有优异的选择性,其中最好的一种是化合物2f对DPP-4的IC50值为0.1 nM,与铅化合物尿嘧啶1相比,抑制活性提高了22倍,其活性比阿格列汀强45倍。选择2e,2f,2i和2k进行药代动力学评估,静脉注射后2f和2i显示出更好的药代动力学特征,但口服生物利用度较差。为了改善口服药代动力学,在2f和2i左右进行了前药设计。合成了2f和2i的酯,并评估了其稳定性,毒性和药代动力学。化合物3e是化合物2f的甲酯,经鉴定具有良好的稳定性,低毒性和改善的口服生物利用度,与大鼠2f相比,其血药