3-(Cyclopropylmethyl)-7-((4-(4-[11C]methoxyphenyl)piperidin-1-yl)methyl)-8-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine: Synthesis and preliminary evaluation for PET imaging of metabotropic glutamate receptor subtype 2
作者:Katsushi Kumata、Yiding Zhang、Masanao Ogawa、Yusuke Kurihara、Wakana Mori、Kuan Hu、Masayuki Fujinaga、Nobuki Nengaki、Ming-Rong Zhang
DOI:10.1016/j.bmcl.2020.127555
日期:2020.12
alleviating symptoms of schizophrenic patients in clinical studies. Herein we report the synthesis and preliminary evaluation of a 11C-labeled positron emission tomography (PET) tracer originating from a mGluR2 inhibitor, 3-(cyclopropylmethyl)-7-((4-(4-methoxyphenyl)piperidin-1-yl)methyl)-8-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine (CMTP, 1a). [11C]CMTP ([11C]1a) was synthesized by O-[11C]methylation
在临床研究中,已证明选择性代谢型谷氨酸受体2(mGluR2)抑制剂可通过减轻精神分裂症患者的症状来显示治疗效果。本文中,我们报道了源自mGluR2抑制剂3-(环丙基甲基)-7-(((4-(4-甲氧基苯基)哌啶-1-基)的11 C标记正电子发射断层扫描(PET)示踪剂的合成和初步评估甲基)-8-(三氟甲基)-[1,2,4]三唑并[4,3- a ]吡啶(CMTP,1a)。[ 11 C] CMTP([ 11 C] 1A)通过O-合成[ 11的脱甲基前体C]甲基化1b中与[ 11C]甲基碘的放射化学产率(基于[ 11 C] CO 2)为19.7±8.9%(n = 10),放射化学纯度> 98%,摩尔活性> 74 GBq /μmol。放射自显影研究表明[ 11 C] 1a在大鼠脑中具有与mGluR2的适度体外特异性结合,并且在富含mGluR2的脑组织切片(如大脑皮层和纹状体)中放射性蓄积的分布不均。PET研究表明[