Synthesis and evaluation of [11C]Cimbi-806 as a potential PET ligand for 5-HT7 receptor imaging
作者:Matthias M. Herth、Hanne D. Hansen、Anders Ettrup、Agnete Dyssegaard、Szabolcs Lehel、Jesper Kristensen、Gitte M. Knudsen
DOI:10.1016/j.bmc.2012.05.005
日期:2012.7
this study, we describe the synthesis, radiolabeling and in vivo evaluation of [11C]2-(2′,6′-dimethoxy-[1,1′-biphenyl]-3-yl)-N,N-dimethylethanamine ([11C]Cimbi-806) as a radioligand for imaging brain 5-HT7 receptors with positron emission tomography (PET). Precursor and reference compound was synthesized and subsequent 11C-labelling with [11C]methyltriflate produced [11C]Cimbi-806 in specific activities
2-(2',6'-二甲氧基-[1,1'-联苯] -3-基)-N,N-二甲基乙胺已被确定为5-羟色胺7(5-HT 7)受体的有效配体。在这项研究中,我们描述了[ 11 C] 2-(2',6'-二甲氧基-[1,1'-联苯] -3-基)-N,N-二甲基乙胺( [ 11 C] Cimbi-806)作为放射性配体,用于通过正电子发射断层扫描(PET)对大脑5-HT 7受体进行成像。合成了前体和参考化合物,随后用[ 11 C]三氟甲磺酸甲酯进行了11 C标记[ 11C] Cimbi-806的特定活动范围为50至300 GBq /μmol。静脉注射后,用PET对丹麦长白猪的脑吸收和[ 11 C] Cimbi-806的分布进行了评估。时间-活动曲线显示丘脑和纹状体区域的大脑摄取量很高(SUV约为2.5),动力学模型导致分布体积(V T)从小脑的6 mL / cm 3到丘脑的12 mL / cm 3。用5-HT