Synthesis of a Potent and Selective <sup>18</sup>F-Labeled δ-Opioid Receptor Antagonist Derived from the Dmt-Tic Pharmacophore for Positron Emission Tomography Imaging
作者:Eun Kyoung Ryu、Zhanhong Wu、Kai Chen、Lawrence H. Lazarus、Ewa, D. Marczak、Yusuke Sasaki、Akihiro Ambo、Severo Salvadori、Chuancheng Ren、Heng Zhao、Gianfranco Balboni、Xiaoyuan Chen
DOI:10.1021/jm7014765
日期:2008.3.1
Identification and pharmacological characterization of two new selective delta-opioid receptor antagonists, derived from the Dmt-Tic pharmacophore, of potential utility in positron emission tomography (PET) imaging are described. On the basis of its high delta selectivity, H-Dmt-Tic--Lys(Z)-OH (reference compound 1) is a useful starting point for the synthesis of (18)F-labeled compounds prepared by the
描述了两种新的选择性 delta-阿片受体拮抗剂的鉴定和药理学表征,这些拮抗剂源自 Dmt-Tic 药效团,在正电子发射断层扫描 (PET) 成像中具有潜在的效用。基于其高 delta 选择性,H-Dmt-Tic--Lys(Z)-OH(参考化合物 1)是合成 (18)F 标记化合物的有用起点,该化合物通过 N-偶联制备。琥珀酰亚胺基 4-[ (18)F] 氟苯甲酸酯 ([(18)F]SFB) 与 Boc-Dmt-Tic--Lys(Z)-OH 在弱碱性条件下在 37°C 下反应 15 分钟,用 TFA 脱保护,和高效液相色谱纯化。总合成时间为 120 分钟,从 [(18)F]SFB (n = 5) 开始,[(18)F]-1 的衰减校正放射化学产率约为 25-30% ( n = 5)有效比活约为 46 GBq/微摩尔。体外放射自显影研究显示 [(18)F]-1 在纹状体和皮质中的显着吸收,并被