Selective chelation of bismuth radionuclide ions from a mixture including actinium radionuclide ions involves exposing a ligand to an aqueous solution that includes bismuth radionuclide ions and actinium radionuclide ions under conditions whereby the bismuth radionuclide ions selectively chelate to the ligand for form cationic complexes of the bismuth radionuclide ions. and separating the cationic complexes of the bismuth radionuclide ions from the actinium radionuclide ions. The ligands have a structure based on a 12-membered cyclen ring and may include pendant functional groups that can be derivatized with biological targeting vectors for targeted alpha therapy.
从包含
锕系放射性核素离子的混合物中选择性螯合
铋放射性核素离子涉及将
配体暴露在包含
铋放射性核素离子和
锕放射性核素离子的
水溶液中,在条件下
铋放射性核素离子选择性地螯合到
配体上,形成
铋放射性核素离子的阳离子络合物,并将
铋放射性核素离子的阳离子络合物与
锕放射性核素离子分离。这些
配体基于一个12元环戊二胺环的结构,并且可能包含可以与
生物靶向载体衍生的侧链功能基团,用于靶向α放射疗法。