申请人:Ciba-Geigy Corporation
公开号:US05051523A1
公开(公告)日:1991-09-24
There is disclosed a process for the preparation of analytically pure chelate complexes which can be used in diagnostic medicine, for example as contrast media or radiopharmaceuticals. The process comprises transcomplexing a complex of a .beta.-dicarbonyl compound and a metal ion, for example a metal acetylacetonate, which is readily soluble in an organic solvent that is not miscible in all proportions with water, with a stoichiometric amount or with a less than equivalent amount of a chelating agent whose binding affinity for the metal ion is greater than that of the .beta.-dicarbonyl compound.
本发明公开了一种制备纯度分析的螯合物复合物的方法,该复合物可以用于诊断医学,例如作为对比剂或放射性药物。该方法包括通过转位配合的方式,将β-二羰基化合物和金属离子的复合物(例如金属乙酰丙酮酸盐)与一个比β-二羰基化合物的金属离子结合亲和力更高的螯合剂的等化量或少于等化量的量,在不与水完全混溶的有机溶剂中溶解。