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.
本发明公开了包含一个或多个
硫原子的螯合化合物,这些化合物将用
金属放射性核素进行放射性标记以形成相应的螯合物。螯合化合物包含
硫代
乙醛或半
硫代
乙醛硫保护基团,这些保护基团在酸性 pH 值下进行的放射性标记反应中被置换,从而在所述
硫原子和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。