申请人:SCRIPPS RESEARCH INST
公开号:WO2015048306A1
公开(公告)日:2015-04-02
The invention provides inhibitors of a sterol C14-demethylase, a new series of 4- aminopyridyl-based lead inhibitors targeting Trypanosoma cruzi CYP51 (TcCYP51) developed using structure-based drug design as well as structure -property relationship (SPR) analyses. The screening hit starting point, LP 10 (KD < 42 nM; EC50 of 0.65 μΜ), has been optimized to give the potential leads that have low nanomolar binding affinity to TcCYP51 and significant activity against T. cruzi amastigotes cultured in human myoblasts. Many of the optimized compounds have improved microsome stability, and most are selective against the T. cruzi CYP51 relative to human CYPs 1A2, 2D6 and 3A4 (<50% inhibition at 1 μΜ). A rationale for the improvement of microsome stability and selectivity of inhibitors against human metabolic CYP enzymes is presented. In addition, the binding mode of several compounds of the invention with the T. brucei CYP51 (TbCYP51) ortholog has been characterized by x-ray structure analysis. Orally active compounds and their cyclodextrin complexes have been shown to be effective against Chagas-infected mice.
该发明提供了一种甾醇C14-去甲基酶的抑制剂,这是一种新系列基于4-氨基吡啶的首选抑制剂,通过基于结构的药物设计以及结构-性质关系(SPR)分析来瞄准Trypanosoma cruzi CYP51(TcCYP51)而开发的。筛选起始点LP 10(KD < 42 nM;EC50为0.65 μΜ)已经经过优化,产生了具有低纳摩尔级别结合亲和力和对在人类肌细胞培养的T. cruzi游离体的显著活性的潜在首选抑制剂。许多经过优化的化合物具有改善的微粒体稳定性,大多数相对于人类CYPs 1A2、2D6和3A4对T. cruzi CYP51具有选择性(在1 μΜ下<50%的抑制)。提出了改善微粒体稳定性和抑制剂对人类代谢CYP酶的选择性的理由。此外,通过X射线结构分析表征了该发明的几种化合物与T. brucei CYP51(TbCYP51)同源物的结合方式。口服活性化合物及其环糊精复合物已被证明对克氏病感染的小鼠有效。