The present invention provides tetra-amine chelator conjugates with biological targeting moieties, linked via a linker group and technetium complexes thereof as radiopharmaceuticals. The linker group is such that the chelator is mono-functionalized at the bridgehead position and provides both flexibility and a lack or aryl groups, to minimize lipophilicity and steric hulk. Protected versions of the chelators are provided which permit conjugation with a wide range of targeting molecules without interfering reactions with the amine nitrogens of the tetra-amine chelator. Syntheses of the functionalised chelators are described, together with bifunctional chelate precursors. Radiopharmaceutical compositions comprising the technetium metal complexes of the invention are described, together with non-radioactive kits for the preparation of such radiopharmaceuticals.
本发明提供了具有
生物靶向物质的四胺螯合物共轭物,通过连接基团和
铝的技术复合物作为放射性药物。连接基团是这样的,即螯合物在桥头位置上是单功能化的,并提供了灵活性和缺乏芳基团,以最小化亲脂性和立体障碍。提供了受保护的螯合物版本,允许与广泛的靶向分子结合,而不会干扰四胺螯合物的胺基
氮的反应。描述了功能化螯合物的合成,以及双功能螯合前体。描述了本发明的
铝金属复合物的放射性药物组成,以及用于制备这种放射性药物的非放射性试剂盒。