申请人:NeoRx Corporation
公开号:US05021556A1
公开(公告)日:1991-06-04
Chelating compounds which comprise one or more sulfur atoms and are to be radiolabeled with metal radionuclides to form the corresponding chelates are disclosed. The chelating compounds comprise thioacetal or hemithioacetal sulfur protecting groups which are displaced during the radiolabeling reaction, which is conducted at acidic pH, such that bonds form between said sulfur atoms and said radionuclide. The resulting metal radionuclide chelates have diagnostic and therapeutic medical uses.
本发明揭示了包含一个或多个硫原子并且将与金属放射性核素进行放射标记以形成相应螯合物的螯合化合物。这些螯合化合物包括硫缩醛或半硫缩醛硫保护基,这些基团在放射标记反应中被取代,该反应在酸性pH下进行,使得所述硫原子与所述放射性核素之间形成键。由此产生的金属放射性核素螯合物具有诊断和治疗医学用途。