Structure-activity studies of potassium channel opening in pinacidil-type cyanoguanidines, nitroethenediamines, thioureas, and ureas
作者:Paul W. Manley、Ulrich Quast
DOI:10.1021/jm00090a025
日期:1992.6
attributable to an increased opening of potassium channels. The resulting quantitative in vitro data has been used to analyze the structure-activity relationships for potassium channel opening, allowing the biological activity to be rationalized in terms of a pharmacophore involving a hydrogen-bond-acceptor element, a hydrogen-bond-donor element, and a lipophilic binding group. A model for the binding of pinacidil-related
通过同时测量自发收缩活性和刺激负载有86Rb +的大鼠门静脉的86Rb +外排,评估了吡那地尔型氰基胍,硝基乙二胺,硫脲和尿素的钾通道开放活性。这两种作用之间的良好相关性表明,化合物的血管舒张活性直接归因于钾通道开放的增加。所得的定量体外数据已用于分析钾通道开放的结构-活性关系,从而可以根据涉及氢键受体元素,氢键供体元素的药效团合理化生物活性。和亲脂性结合基团。已经开发出了与吡那地尔相关的化合物与其钾通道受体结合的模型,并且已经合成和测试了设计用于测试该模型的化合物。质子平衡在确定化合物的氢键能力中起着基本作用,涉及受体的构象变化以解释不同化合物中亲脂性基团的手性识别差异。