Novel Analogues of Istaroxime, a Potent Inhibitor of Na<sup>+</sup>,K<sup>+</sup>-ATPase: Synthesis and Structure−Activity Relationship
作者:Mauro Gobbini、Silvia Armaroli、Leonardo Banfi、Alessandra Benicchio、Giulio Carzana、Giorgio Fedrizzi、Patrizia Ferrari、Giuseppe Giacalone、Michele Giubileo、Giuseppe Marazzi、Rosella Micheletti、Barbara Moro、Marco Pozzi、Piero Enrico Scotti、Marco Torri、Alberto Cerri
DOI:10.1021/jm800257s
日期:2008.8.1
We report the synthesis and biological properties of novel inhibitors of the Na(+),K(+)-ATPase as positive inotropic compounds. Following our previously described model from which Istaroxime was generated, the 5alpha,14alpha-androstane skeleton was used as a scaffold to study the space around the basic chain of our lead compound. Some compounds demonstrated higher potencies than Istaroxime on the receptor
我们报告Na(+),K(+)-ATPase作为正性肌力化合物的新型抑制剂的合成和生物学特性。遵循我们先前描述的生成Istaroxime的模型后,将5alpha,14alpha-雄甾烷骨架用作支架来研究我们先导化合物的基本链周围的空间。一些化合物在受体上显示出比四氢呋喃肟更高的效价,(E)-3-[(R)-3-吡咯烷基]肟衍生物15最有效。为进一步证实我们的模型,肟的E异构体比Z形式更有效。在豚鼠模型中测试的化合物诱导了正性肌力作用,这与Na(+),K(+)-ATPase的体外抑制能力有关。发现所有受测化合物产生的心律失常性均低于地高辛,