Synthesis and Characterization of 5-(2-Fluoro-4-[<sup>11</sup>C]methoxyphenyl)-2,2-dimethyl-3,4-dihydro-2<i>H</i>-pyrano[2,3-<i>b</i>]pyridine-7-carboxamide as a PET Imaging Ligand for Metabotropic Glutamate Receptor 2
作者:Gengyang Yuan、Maeva Dhaynaut、Yu Lan、Nicolas J. Guehl、Dalena Huynh、Suhasini M. Iyengar、Sepideh Afshar、Manish Kumar Jain、Julie E. Pickett、Hye Jin Kang、Hao Wang、Sung-Hyun Moon、Mary Jo Ondrechen、Changning Wang、Timothy M. Shoup、Georges El Fakhri、Marc D. Normandin、Anna-Liisa Brownell
DOI:10.1021/acs.jmedchem.1c02004
日期:2022.2.10
4-dihydro-2H-pyrano[2,3-b]pyridine-7-carboxamide ([11C]13, [11C]mG2N001), a potent negative allosteric modulator (NAM), was developed to support this endeavor. [11C]13 was synthesized via the O-[11C]methylation of phenol 24 with a high molar activity of 212 ± 76 GBq/μmol (n = 5) and excellent radiochemical purity (>99%). PET imaging of [11C]13 in rats demonstrated its superior brain heterogeneity and
代谢型谷氨酸受体 2 (mGluR2) 是多种神经精神疾病的治疗靶点。正电子发射断层扫描 (PET) 可以揭示 mGluR2 在病因学中的功能。在这方面,5-(2-氟-4-[ 11 C]甲氧基苯基)-2,2-二甲基-3,4-二氢-2 H-吡喃并[2,3 -b ]吡啶-7-甲酰胺([ 11 C] 13 ,[ 11 C]mG2N001),一种有效的负变构调节剂(NAM),是为了支持这一努力而开发的。 [ 11 C] 13通过苯酚24的O -[ 11 C]甲基化合成,具有 212 ± 76 GBq/μmol ( n = 5) 的高摩尔活性和优异的放射化学纯度 (>99%)。大鼠体内 [ 11 C] 13的 PET 成像显示其卓越的脑异质性,并通过 mGluR2 NAM、VU6001966 ( 9 ) 和 MNI-137 ( 26 ) 预处理减少了积累,其程度揭示了阻断的时间依赖性药物效应代理。在非人类灵长类动物中,[