Imidazo[1,2-a]pyrimidines and imidazo[1,2-a]pyrazines: the role of nitrogen position in inotropic activity
作者:Wayne A. Spitzer、Frantz Victor、G. Don Pollock、J. Scott Hayes
DOI:10.1021/jm00403a018
日期:1988.8
reaffirmed by the activity of our analogues. The biological equivalence of imidazo[4,5-b]pyridines with imidazo[1,2-a]pyrimidines and imidazo[4,5-c]pyridines with imidazo[1,2-a]pyrazines is demonstrated. Further, 2-[2-methoxy-4-(methylsulfenyl)phenyl]imidazo[1,2-a]pyrazine and 2-[2-methoxy-4-(methylsulfonyl)phenyl]-imidazo[1,2-a]pyrazine are potent inotropic agents both in vitro and in vivo.
充血性心力衰竭是主要的医学问题,现有药物对其提供的益处有限。最近的新实验药物,包括咪唑并[4,5-b]-和咪唑并[4,5-c]吡啶,具有正性肌力和血管舒张性。这些化合物氮位置的细微变化已显示出会显着影响效能。我们合成了一系列咪唑[4,5-b]-和-[4,5-c]吡啶类似物,它们的咪唑氮原子位于桥头位置。我们的类似物的活性再次证明了[4,5-c]吡啶与[4,5-b]吡啶相比具有更好的正性肌力。证明了咪唑并[4,5-b]吡啶与咪唑并[1,2-a]嘧啶的生物等效性以及咪唑并[4,5-c]吡啶与咪唑并[1,2-a]吡嗪的生物学等效性。此外,2- [2-甲氧基-4-(甲基亚磺酰基)苯基]咪唑[1,