The invention relates to new macrocyclic metal complex carboxylic acids of formula II ##STR1## whereby Z.sup.o stands for a metal ion equivalent of atomic numbers 58-71 and R stands for a CHX.sup.1 --CO--NH--CHY.sup.1 --(CH.sub.2).sub.f --COOH group, in which X.sup.1 and Y.sup.1, independently of one another, mean a hydrogen atom, a straight-chain or branched C.sub.1 -C.sub.7 alkyl radical, a phenyl or benzyl group and f means numbers 0 to 9. They can be used as intermediate stages for synthesis of cascade polymer complexes that are suitable as diagnostic agents.
本发明涉及公式II的新型大环
金属配合物
羧酸,其中Z.sup.o代表原子序数为58-71的
金属离子等效物,R代表一个CHX.sup.1--CO--NH--CHY.sup.1--(CH.sub.2).sub.f--COOH基团,其中X.sup.1和Y.sup.1独立地表示氢原子、直链或支链C.sub.1-C.sub.7烷基基团、苯基或苄基,f表示0至9的数字。它们可以用作级联聚合物配合物的中间阶段,这些配合物适用于诊断试剂。