Discovery of Novel Imidazo[4,5-<i>b</i>]pyridines as Potent and Selective Inhibitors of Phosphodiesterase 10A (PDE10A)
作者:Essa Hu、Kristin Andrews、Samer Chmait、Xiaoning Zhao、Carl Davis、Silke Miller、Geraldine Hill Della Puppa、Mary Dovlatyan、Hang Chen、Dianna Lester-Zeiner、Jessica Able、Christopher Biorn、Ji Ma、Jianxia Shi、James Treanor、Jennifer R. Allen
DOI:10.1021/ml5000993
日期:2014.6.12
discovery of novel imidazo[4,5-b]pyridines as potent and selective inhibitors of PDE10A. The investigation began with our recently disclosed ketobenzimidazole 1, which exhibited single digit nanomolar PDE10A activity but poor oral bioavailability. To improve oral bioavailability, we turned to novel scaffold imidazo[4,5-b]pyridine 2, which not only retained nanomolar PDE10A activity but was also devoid
我们报告了新型咪唑并[4,5- b ]吡啶作为 PDE10A 的有效和选择性抑制剂的发现。调查从我们最近公开的酮苯并咪唑1 开始,它表现出个位数纳摩尔 PDE10A 活性,但口服生物利用度差。为了提高口服生物利用度,我们转向了新型支架咪唑并[4,5- b ]吡啶2,它不仅保留了纳摩尔级的 PDE10A 活性,而且没有吗啉代谢倾向。系统地进行了构效关系研究,以检查分子的各个区域如何影响效力。化合物7和24 的X 射线共晶结构在人类 PDE10A 中有助于阐明关键的结合相互作用。最有效的和结构上不同的咪唑并[4,5的五个b ]吡啶(4,7,12B,24A,和24B与PDE10A IC)50个值范围从0.8至6.7 nM的被推进到受体占有率。它们(四个4,12B,24A,和24B)来实现55-74%RO以10mg / kg口服。