Radiosynthesis and Evaluation of [<sup>11</sup>C]-(+)-4-Propyl-3,4,4a,5,6,10b-hexahydro-2<i>H</i>-naphtho[1,2-<i>b</i>][1,4]oxazin-9-ol as a Potential Radiotracer for in Vivo Imaging of the Dopamine D2 High-Affinity State with Positron Emission Tomography
作者:Alan A. Wilson、Patrick McCormick、Shitij Kapur、Matthaeus Willeit、Armando Garcia、Doug Hussey、Sylvain Houle、Philip Seeman、Nathalie Ginovart
DOI:10.1021/jm050155n
日期:2005.6.1
antagonist) radiotracers could provide important information on the high-affinity (functional) state of the D2 receptor in illnesses such as schizophrenia, movement disorders, and addictions. We report here the radiosynthesis and evaluation of the potent D2 agonist (+)-4-propyl-3,4,4a,5,6,10b-hexahydro-2H-naphtho[1,2-b][1,4]oxazin-9-ol, (+)-3, labeled with carbon-11, as a potential radiotracer for imaging
用激动剂(而不是更常用的拮抗剂)对多巴胺D2受体进行体内成像可在诸如精神分裂症,运动障碍和成瘾之类的疾病中提供有关D2受体高亲和力(功能性)状态的重要信息。我们在这里报告了强力D2激动剂(+)-4-丙基-3,4,4a,5,6,10b-六氢-2H-萘[1,2-b] [1,4]恶嗪的放射合成和评估-9-ol,(+)-3,用碳11标记,是一种潜在的放射性示踪剂,可通过正电子发射断层扫描(PET)对多巴胺D2受体的高亲和力状态进行成像。[(11)C]-(+)-3以人类PET研究所需的量,特定的活性和放射化学纯度可靠地合成。大鼠脑中的离体生物分布研究表明,[(11)C]-(+)-3可以轻松穿过血脑屏障,并具有适合绘制多巴胺D2受体的放射性示踪剂的适当区域性大脑分布。[(11)C]-(+)-3的结合是可饱和的,并且在注射后60分钟,通过5.6纹状体与小脑的比率测得显示出优异的信噪比。结合是高度立体特异