Design, synthesis, radiolabeling and in vivo evaluation of potential positron emission tomography (PET) radioligands for brain imaging of the 5-HT7 receptor
作者:Enza Lacivita、Mauro Niso、Hanne D. Hansen、Pantaleo Di Pilato、Matthias M. Herth、Szabolcs Lehel、Anders Ettrup、Lisa Montenegro、Roberto Perrone、Francesco Berardi、Nicola A. Colabufo、Marcello Leopoldo、Gitte M. Knudsen
DOI:10.1016/j.bmc.2014.01.016
日期:2014.3
design, synthesis, and pharmacological evaluation of a set of compounds structurally related to the high affinity serotonin 5-HT7 receptor agonist N-(4-cyanophenylmethyl)-4-(2-diphenyl)-1-piperazinehexanamide (6, LP-211). Specific structural modifications were performed in order to maintain affinity for the target receptor and to improve the selectivity over 5-HT1A and adrenergic α1 receptors. The synthesized
在这里,我们描述了一组与高亲和性5-羟色胺5-HT 7受体激动剂N-(4-氰基苯基甲基)-4-(2-二苯基)-1-哌嗪己酰胺(6,LP-211)。的具体结构进行了修饰,以保持亲和力靶受体和以改进对5-HT的选择性进行1A和肾上腺素能α 1个受体。合成的化合物具有化学特征,可以使用正电子发射体放射性同位素(碳11或氟18)进行标记,并且亲脂性在认为对脑部穿透和低非特异性结合最合适的范围内。4- [2-(4-甲氧基苯基)苯基] -N-(吡啶-4-基甲基)哌嗪己酰胺(23a)和N-吡啶-4-基甲基-3- [4- [2-(4-(4-甲氧基苯基)苯基]哌嗪-1-基]乙氧基]丙酰胺(26a)被标记。在带有碳原子11的甲氧基上。正电子发射断层扫描(PET)分析显示,[ 11 C] -23a和[ 11 C] -26a是P-糖蛋白(P-gp)底物,并迅速代谢,导致大脑摄取不良。这些特征不是通过体外测试来预测的。