1-[(2′-substituted)-piperazin-1′ -yl]-isoquinolines as norepinephrine transporter inhibitor therapeutics and positron emission tomography imaging agents
申请人:University of Montana
公开号:US07887784B2
公开(公告)日:2011-02-15
Racemic mixtures and enantiomerically pure forms of novel 1-[(2′-substituted)-piperazin-1′-yl]-isoquinolines are norepinephrine (NE) transporter (NET) inhibitor compounds. Compounds of the invention are considered therapeutic agents for central nervous system (CNS) diseases and disorders, without limitation, including neurodegeneration, anxiety, depression, attention deficit disorders, drug dependency, and post traumatic stress disorder. Examples of the chemical syntheses of the compounds of the invention are provided. The isoquinoline compounds of the invention competitively bind at NET at nanomolar concentrations. The isoquinoline agents of the invention bind selectively to NET over other competitive transporter targets and receptor binding sites, including those of serotonin and dopamine, amongst others. The chemical syntheses of the invention are suitable for labeling with radionuclide atoms. Radiolabeled forms of the novel 1-[(2′-substituted)-piperazin-1′-yl]-isoquinoline compounds are positron emission tomography and single photon emission tomography imaging tracers. Methods of in vivo imaging with the tracers within various subjects and tissues therein, including regions of the brain, are provided. Imaging methods with the tracers in combination other NET inhibitor agents are provided. The imaging methods within subjects allow quantitative detection of NET, determinations of NET distributions, and measures of tracer interactions at NET in the presence or absence of non-radioactive NET agents. The tracer imaging methods are suitable to locate, diagnose, identify, evaluate, detect or quantitate NET, or abnormalities of NET, or NE abnormalities; that are associated with various CNS diseases and disorders.
该发明涉及新型1-[(2'-取代)-哌嗪-1'-基]-异喹啉的外消旋混合物和对映纯形式,它们是去甲肾上腺素(NE)转运体(NET)抑制剂化合物。该发明的化合物被认为是治疗中枢神经系统(CNS)疾病和障碍的治疗剂,包括但不限于神经退行性疾病、焦虑、抑郁、注意力缺陷障碍、药物依赖和创伤后应激障碍等。提供了该发明化合物的化学合成实例。该发明的异喹啉化合物在纳摩尔浓度下竞争性地结合于NET。该发明的异喹啉剂在选择性结合于NET而不是其他竞争性转运体靶点和受体结合位点,包括血清素和多巴胺等。该发明的化学合成适用于用放射性核素原子标记。新型1-[(2'-取代)-哌嗪-1'-基]-异喹啉化合物的放射性标记形式是正电子发射断层扫描和单光子发射断层扫描成像示踪剂。提供了使用这些示踪剂在各种受试者和其中的组织,包括大脑区域内进行体内成像的方法。提供了使用这些示踪剂与其他NET抑制剂一起进行成像的方法。在受试者中使用示踪剂的成像方法允许定量检测NET、确定NET分布以及测量在存在或不存在非放射性NET剂的情况下示踪剂与NET的相互作用。示踪剂成像方法适用于定位、诊断、鉴定、评估、检测或量化与各种CNS疾病和障碍相关的NET或NET异常。