The present invention relates to a novel radioactive benzodiazepine derivative represented by the formula: ##STR1## wherein R is hydrogen or a lower alkyl; X* is radioactive iodine or bromine; Y is hydrogen or a halogen; and Z is a halogen or nitro group; and the salt thereof. The compound of the present invention enables to non-invasively detect the presence of benzodiazepine receptors in human or animal brains, other organs or tissues. Additionally, it enables to dynamically trace the change in receptor concentration either. It is very useful as a radioactive diagnostic agent for nuclear medicine in vitro or in vivo or as a radiopharmaceutical.
Radioactive benzodiazepine derivative and processes for producing the same
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0313291A1
公开(公告)日:1989-04-26
The present invention relates to radioactive benzodiazepine derivatives represented by the formula:
wherein R is hydrogen or a lower alkyl; X* is radioactive iodine or bromine; Y is hydrogen or a halogen; and Z is a halogen or nitro group; and salts thereof.
The compounds can be used to non-invasively detect the presence of benzodiazepine receptors in human or animal brains, other organs or tissues. Additionally, it enables to dynamically trace the change in receptor concentration. Use may be as a radioactive diagnostic agent for nuclear medicine in vitro or in vivo, or as a radiopharmaceutical.
本发明涉及由式表示的放射性苯并二氮杂卓衍生物:
其中 R 是氢或低级烷基;X* 是放射性碘或溴;Y 是氢或卤素;Z 是卤素或硝基;及其盐类。
这些化合物可用于无创检测人或动物大脑、其他器官或组织中苯二氮卓受体的存在。此外,它还能动态追踪受体浓度的变化。可用作体外或体内核医学的放射性诊断剂或放射性药物。