A Series of 18F-Labelled Pyridinylphenyl Amides as Subtype-Selective Radioligands for the Dopamine D3 Receptor
作者:Carsten Hocke、Simone Maschauer、Harald Hübner、Stefan Löber、Wolfgang Utz、Torsten Kuwert、Peter Gmeiner、Olaf Prante
DOI:10.1002/cmdc.201000067
日期:2010.6.7
Synthesis, biological activity, and structure–selectivity relationship (SSR) studies of a novel series of potential dopamine D3 receptor radioligands as imaging agents for positron emission tomography (PET) are reported. Considering a structurally diverse library of D3 ligands, SSR studies were performed for a new series of fluorinated pyridinylphenyl amides using CoMFA and CoMSIA methods. The in vitro
报道了一系列新型的潜在多巴胺D3受体放射性配体作为正电子发射断层显像(PET)的成像剂的合成,生物活性和结构-选择性关系(SSR)研究。考虑到D3配体在结构上的多样性,使用CoMFA和CoMSIA方法对一系列新的氟化吡啶基苯基酰胺进行了SSR研究。预测的联苯酰胺配体系列9 a – d的体外D3亲和力显示单位数到亚纳摩尔效价( K i = 0.52–1.6 n M),与110-210的D2亚型相比,具有出色的D3选择性。测试化合物9 a – c的倍数。通过18 F亲核取代Br或NO 2进行的放射性氟化导致[ 18 F] 9 a – d的放射化学产率为66–92%。但是,[ 18 F] 9 b和[ 18 F] 9 d的比活不够,因此无法用于体内研究。[ 18 F] 9 a和[ 18 F] 9 c的生物分布研究使用大鼠脑部放射自显影技术揭示了心室中的蓄积,因此表明[ 18 F] 9 a和[ 18