A core of a cyclic structure represented by (-N-(CH2)n-)k is bonded to a dendrimer-type side chain with a specific branched structure at all nitrogen atoms in the core to produce a compound with a specific structure for producing a metal complex that exhibits a T1-reducing effect, and the resulting compound is coordinated to a metal ion that has a T1-reducing effect to obtain a metal complex that exhibits an excellent T1-reducing effect which is useful as an effective component of an MRI contrast agent and an MRI contrast agent using the same.
使用具有特定分枝结构的树状侧链与核心为(-N-(
CH2)n-)k的循环结构的核心键合,以产生一种具有特定结构的化合物,用于产生具有T1还原效应的
金属配合物。所得化合物与具有T1还原效应的
金属离子配位,获得一种表现出优异T1还原效应的
金属配合物,可用作MRI对比剂的有效成分,以及使用该
金属配合物的MRI对比剂。