Design, Synthesis, Radiolabeling, and in Vitro and in Vivo Evaluation of Bridgehead Iodinated Analogues of <i>N</i>-{2-[4-(2-Methoxyphenyl)piperazin-1-yl]ethyl}-<i>N</i>-(pyridin-2-yl)cyclohexanecarboxamide (WAY-100635) as Potential SPECT Ligands for the 5-HT<sub>1A</sub> Receptor
作者:Rana Al Hussainy、Joost Verbeek、Dion van der Born、Anton H. Braker、Josée E. Leysen、Remco J. Knol、Jan Booij、J. (Koos) D. M. Herscheid
DOI:10.1021/jm1009956
日期:2011.5.26
Here we describe the design, synthesis, and pharmacological profile of 5-HT1A receptor ligands related to 1 (WAY-100635). The cyclohexyl moiety in 1 and its O-desmethylated analogue 3 were replaced by the bridgehead iodinated bridge-fused rings: adamantyl, cubyl, bicyclo[2.2.2]octyl, or bicyclo[2.2.1]heptyl. All analogues displayed a (sub)nanomolar affinity for the 5-HT1A receptor in vitro. Compounds
在这里,我们描述与1(WAY-100635)相关的5-HT 1A受体配体的设计,合成和药理学特征。在环己基部分1和其O形脱甲基类似物3是由桥头碘化桥接稠环替代:金刚烷基,cubyl,双环[2.2.2]辛基,或二环[2.2.1]庚基。在体外,所有类似物均对5-HT 1A受体表现出(亚)纳摩尔亲和力。化合物6b和7b似乎对该受体具有比其他相关受体更高的选择性,并且可以很容易地用放射性碘123碘化。在人肝细胞中,[ 123 I] 6b表现出较低的酰胺水解倾向和稳定的碳碘键。[ 123 I] 6b和[ 123 I] 7b在大鼠中的生物分布表明,碳碘键在体内也很稳定。不幸的是,两种放射性配体的脑摄取和特异性均显着低于母体分子1。总之,设计的示踪剂不适用于SPECT成像。