Synthesis, In Vivo Occupancy, and Radiolabeling of Potent Phosphodiesterase Subtype-10 Inhibitors as Candidates for Positron Emission Tomography Imaging
作者:José-Ignacio Andrés、Meri De Angelis、Jesús Alcázar、Laura Iturrino、Xavier Langlois、Stefanie Dedeurwaerdere、Ilse Lenaerts、Greet Vanhoof、Sofie Celen、Guy Bormans
DOI:10.1021/jm200536d
日期:2011.8.25
for in vivo imaging using positron emission tomography (PET). We now describe the synthesis and biological evaluation of a series of related pyridinyl analogues that exhibit high potency and selectivity as PDE10A inhibitors. The most interesting compounds were injected in rats to measure their levels of PDE10A occupancy through an in vivo occupancy assay. The 3,5-dimethylpyridine derivative 3 and the
我们最近报道了磷酸二酯酶10A(PDE10A)抑制剂2- [4- [1-(2- [ 18 [ ] F]氟乙基)-4-吡啶-4-4-基-1 H-吡唑-3-基]-苯氧基甲基]-喹啉([ 18 F] 1a)是使用正电子发射断层扫描(PET)进行体内成像的有前途的候选物。现在,我们描述了一系列相关的吡啶基类似物的合成和生物学评估,这些吡啶基类似物作为PDE10A抑制剂具有很高的效力和选择性。将最有趣的化合物注射到大鼠中,以通过体内占有率测定法测量其PDE10A占有率水平。3,5-二甲基吡啶衍生物3和5-甲氧基吡啶衍生物4的可比性与1a。因为这些衍生物显示出较低的体外活性,并且比1a的亲脂性略低,所以我们假设它们可以表现为更好的PET成像配体。放射性合成化合物[ 18 F] 3,[ 18 F] 4和[ 11 C] 4并在大鼠中进行生物分布研究,作为在脑中对PDE10A进行体内成像的候选PET放射性配体进行初步评估。