Synthesis of and radioligand binding studies with a tritiated pinacidil analog: receptor interactions of structurally different classes of potassium channel openers and blockers
作者:Paul W. Manley、Ulrich Quast、Hendrik Andres、Katharine Bray
DOI:10.1021/jm00066a009
日期:1993.7
The synthesis of N-cyano-N'-[1,1-dimethyl-[2,2,3,3-3H]propyl]-N"-(3- pyridinyl)guanidine, [3H]-15, is described. The utility of this tritiated radioligand in characterizing the interactions of potassium channel openers and blockers with their receptors is demonstrated. Potassium channel openers of the pinacidil, cromakalim, aprikalim, diazoxide, and minoxidil types, as well as KATP channel blockers
描述了N-氰基-N’-[1,1-二甲基-[2,2,3,3-3H]丙基] -N”-(3-吡啶基)胍[3H] -15的合成。证明了这种ti化的放射性配体在表征钾通道开放剂和阻断剂与其受体相互作用中的实用性,如吡那地尔,克罗马卡林,普利卡林,重氮氧化物和米诺地尔类型的钾通道开放剂,以及格列本脲和曙红的KATP通道阻断剂。所有类型的化合物都能够从其受体上取代[3H] -15,结果表明所有这些化合物均与相同的靶蛋白相互作用,但可能涉及几个不同的变构偶联的受体结合位点。结构多样的钾通道开放剂抑制[3H] -15结合和放松血管平滑肌的能力之间的高度显着相关性与它们的受体结合位点与钾通道蛋白密切相关,钾通道蛋白是该功能的靶标类药物。