Guanidine−Acylguanidine Bioisosteric Approach in the Design of Radioligands: Synthesis of a Tritium-Labeled <i>N</i><sup>G</sup>-Propionylargininamide ([<sup>3</sup>H]-UR-MK114) as a Highly Potent and Selective Neuropeptide Y Y<sub>1</sub> Receptor Antagonist
作者:Max Keller、Nathalie Pop、Christoph Hutzler、Annette G. Beck-Sickinger、Günther Bernhardt、Armin Buschauer
DOI:10.1021/jm801018u
日期:2008.12.25
tritium-labeled NPY Y(1) receptor (Y(1)R) antagonist (K(B): 0.8 nM, calcium assay, HEL cells) derived from the (R)-argininamide BIBP 3226, is reported. The radioligand binds with high affinity (K(D), saturation: 1.2 nM, kinetic experiments: 1.1 nM, SK-N-MC cells) and selectivity for Y(1)R over Y(2), Y(4), and Y(5) receptors. The title compound is a useful pharmacological tool for the determination of Y(1)R ligand
(R)-Nα-(2,2-二苯基乙酰基)-N-(4-羟基苄基)-N(ω)-([2,3-(3)H]-丙酰基)精氨酰胺的合成与表征([(3)H] -UR-MK114),一种易于获得的tri标记的NPY Y(1)受体(Y(1)R)拮抗剂(K(B):0.8 nM,钙测定,HEL细胞),其衍生自报道了(R)-精氨酰胺BIBP 3226。放射性配体具有高亲和力(K(D),饱和度:1.2 nM,动力学实验:1.1 nM,SK-N-MC细胞)结合,并且对Y(1)R的选择性高于Y(2),Y(4)和Y(5)受体。标题化合物是用于确定Y(1)R配体亲和力,定量Y(1)R结合位点和放射自显影的有用药理学工具。