Identification of Potent Non-Peptide Somatostatin Antagonists with sst<sub>3</sub> Selectivity
作者:Lydie Poitout、Pierre Roubert、Marie-Odile Contour-Galcéra、Christophe Moinet、Jacques Lannoy、Jacques Pommier、Pascale Plas、Dennis Bigg、Christophe Thurieau
DOI:10.1021/jm0108449
日期:2001.8.1
Using a solution-phase parallel synthesis strategy, a series of non-peptide somatostatin analogues were prepared, and their binding affinities to the five human somatostatin receptor subtypes (sst(1-5)) were determined. Imidazolyl derivatives 2 were found to bind with moderate affinity but with high selectivity to the sst(3) receptor subtype. Further modifications of these structures led to a more
使用溶液相平行合成策略,制备了一系列非肽生长抑素类似物,并确定了它们与五种人类生长抑素受体亚型(sst(1-5))的结合亲和力。发现咪唑基衍生物2具有中等亲和力,但对sst(3)受体亚型具有高选择性。这些结构的进一步修饰导致了更有效的配体类别,即四氢-β-咔啉衍生物4。其中,化合物4k(BN81644)和4n(BN81674)选择性结合且与sst(3)受体亚型具有高亲和力(K(i)分别为0.64和0.92 nM)。此外,4k和4n逆转了1 nM生长抑素通过sst(3)受体诱导的对环AMP积累的抑制,IC(50)分别为2.7和0.84 nM。最有效的化合物4n通过增加SRIF-14介导的cAMP积累抑制的EC(50)和2.8 nM的K(B)而显示为人类sst(3)受体的竞争性拮抗剂(其中K(B )是将激动剂剂量反应改变2倍的拮抗剂浓度。就我们所知,这些新的衍生物是已知的第一个有效且高度选择性