Discovery of a Series of Imidazo[4,5-<i>b</i>]pyridines with Dual Activity at Angiotensin II Type 1 Receptor and Peroxisome Proliferator-Activated Receptor-γ
作者:Agustin Casimiro-Garcia、Gary F. Filzen、Declan Flynn、Christopher F. Bigge、Jing Chen、Jo Ann Davis、Danette A. Dudley、Jeremy J. Edmunds、Nadia Esmaeil、Andrew Geyer、Ronald J. Heemstra、Mehran Jalaie、Jeffrey F. Ohren、Robert Ostroski、Teresa Ellis、Robert P. Schaum、Chad Stoner
DOI:10.1021/jm200409s
日期:2011.6.23
Mining of an in-house collection of angiotensin II type 1 receptor antagonists to identify compounds with activity at the peroxisome proliferator-activated receptor-γ (PPARγ) revealed a new series of imidazo[4,5-b]pyridines 2 possessing activity at these two receptors. Early availability of the crystal structure of the lead compound 2a bound to the ligand binding domain of human PPARγ confirmed the
内部收集血管紧张素II 1型受体拮抗剂以鉴定对过氧化物酶体增殖物激活受体-γ(PPARγ)具有活性的化合物,发现了一系列新的咪唑并[4,5- b ]吡啶2在这些化合物上具有活性两个受体。与人PPARγ的配体结合域结合的前导化合物2a的晶体结构的早期可用性证实了该支架与核受体的相互作用方式,并有助于优化PPARγ活性。在新化合物中,(S)-3-(5-(2-(1 H-四唑-5-基)苯基)-2,3-二氢-1 H-茚满-1-基)-2-乙基- 5-异丁基-7-甲基-3 H-咪唑[4,5- b对吡啶(2l)被确定为有效的血管紧张素II型I受体阻滞剂(IC 50 = 1.6 nM),具有部分PPARγ激动作用(EC 50 = 212 nM,最大31%),并且在大鼠中具有口服生物利用度。在高血压(SHR)和胰岛素抵抗(ZDF大鼠)的动物模型中证实了2l的双重药理学。在SHR中,2l在降低血压方面非常有效,