Further Studies on Imidazo[4,5-<i>b</i>]pyridine AT<sub>1</sub> Angiotensin II Receptor Antagonists. Effects of the Transformation of the 4-Phenylquinoline Backbone into 4-Phenylisoquinolinone or 1-Phenylindene Scaffolds
作者:Andrea Cappelli、Gal.la Pericot Mohr、Germano Giuliani、Simone Galeazzi、Maurizio Anzini、Laura Mennuni、Flora Ferrari、Francesco Makovec、Eva M. Kleinrath、Thierry Langer、Massimo Valoti、Gianluca Giorgi、Salvatore Vomero
DOI:10.1021/jm0603163
日期:2006.11.1
The 4-phenylquinoline fragment of novel AT(1) receptor antagonists 4 based on imidazo[4,5-b]pyridine moiety was replaced by 4-phenylisoquinolinone (compounds 5) or 1-phenylindene (compounds 6) scaffolds to investigate the structure-activity relationships. Binding studies showed that most of the synthesized compounds display high affinity for the AT(1) receptor. Because of the in vitro high potency
基于咪唑并[4,5-b]吡啶部分的新型AT(1)受体拮抗剂4的4-苯基喹啉片段被4-苯基异喹啉酮(化合物5)或1-苯基茚(化合物6)支架取代,以研究结构-活动关系。结合研究表明,大多数合成的化合物显示出对AT(1)受体的高亲和力。由于羧酸5b,f在体外具有较高的效能,因此与喹啉衍生物4b,i,j,k相比,对它们的渗透性(在Caco-2细胞中)和药代动力学研究进行了评估。研究表明,这些化合物的特点是排泄迅速,膜通透性低和口服生物利用度低。茚衍生物的结构优化导致化合物6e,f具有有趣的AT(1)受体亲和力。优化产生了可聚合的AT(1)受体配体6c,后者形成了热可逆性聚合物(poly-6c),并通过与温度有关的动力学从后者中释放出来。结果表明基于新的释放机理开发新颖的聚合物前药的可能性。最后,一组34种AT(1)受体拮抗剂被用作评估先前公布的定性和定量药效团模型预测能力的新方法。