Studies towards the development of a PET radiotracer for imaging of the P2Y1 receptors in the brain: synthesis, 18F-labeling and preliminary biological evaluation
作者:Rareş-Petru Moldovan、Barbara Wenzel、Rodrigo Teodoro、Wilma Neumann、Sladjana Dukic-Stefanovic、Werner Kraus、Peijing Rong、Winnie Deuther-Conrad、Evamarie Hey-Hawkins、Ute Krügel、Peter Brust
DOI:10.1016/j.ejmech.2019.01.006
日期:2019.3
capture therapy (BNCT). By functional assays, the new fluorinated derivative 1-2-[2-(tert-butyl)phenoxy]pyridin-3-yl}-3-[4-(2-fluoroethyl)phenyl]urea (18) was identified with a high P2Y1R antagonistic potency (IC50 = 10 nM). Compound [18F]18 was radiosynthesized by using tetra-n-butyl ammonium [18F]fluoride with high radiochemical purity, radiochemical yield and molar activities. Investigation of brain
在几乎所有激活嘌呤受体各种亚型的组织中,嘌呤核苷酸(例如ATP和ADP)都是重要的细胞外信号分子。在大脑中,P2Y 1受体(P2Y 1 R)亚型介导营养功能,例如分化和增殖,并调节快速的突触传递,两者均提示可能在中枢神经系统疾病中受到影响。对P2Y 1 R的研究受到限制,因为尚无合适的可穿透脑的P2Y 1 R选择性示踪剂。在这里,我们描述第一努力开发18 F-标记的PET示踪剂基于高度仿射和选择性,非核苷酸P2Y的结构1 - [R变构调节剂的1-(2- [2-(叔丁基)苯氧基]吡啶-3-基)-3- [4-(三氟甲氧基)苯基]脲(7)。通过系统修饰铅化合物7的对-(三氟甲氧基)苯基,尿素和2-吡啶基亚基,开发了一系列的氟化化合物。另外,对-(三氟甲氧基)苯基亚基被碳硼烷取代,碳硼烷是一种富硼簇,在硼中子俘获治疗(BNCT)中具有潜在的适用性。通过功能分析,确定了新的氟化衍生物1- 2- [2-(叔丁基)苯氧基]吡啶-3-基}