(S)-(2-Methylpyrid-5-yl)-6-[(3-[18F]fluoro-2-hydroxy)propoxy]quinoline ([18F]SMBT-1) was recently developed as a novel class of selective and reversible monoamine oxidase-B (MAO-B) tracers for in vivo imaging of reactive astrogliosis via positron emission tomography. To investigate the effect of the chirality of [18F]SMBT-1 on tracer performance, we synthesized (S)-[18F]6 ([18F]SMBT-1) and (R)-[18F]6
( S )-(2-Methylpyrid-5-yl)-6-[(3-[ 18 F]fluoro-2-hydroxy)propoxy]quinoline ([ 18 F]S
MBT-1) 最近被开发为一种新型的选择性和可逆单胺氧化酶-B (MAO-B) 示踪剂,用于通过正电子发射断层扫描对反应性星形胶质细胞增生进行体内成像。为了研究 [ 18 F]S
MBT-1 的手性对示踪剂性能的影响,我们合成了 ( S )-[ 18 F] 6 ([ 18 F]S
MBT-1) 和 ( R )-[ 18 F] 6和比较了它们的结合特性、药代动力学和代谢。(小号)- 6与 ( R ) -6相比,对 MAO-B 的结合亲和力更高,对 MAO-A 的结合亲和力更低,表明选择性比 (MAO-B/MAO-A) 更高。在小鼠中进行的药代动力学研究表明,( S )-[ 18 F] 6和 ( R )-[ 18 F] 6均显示出足够的初始脑摄取。然而,(