A ligand of Formula (I) is provided:
wherein A
4
represents a hydrogen atom, a nitro group, an amino group, a thiocyanato group, or —Z—Y, in which Z is a divalent linking group and Y is a group derived from a biocompatible molecule, with the proviso that when X is methylene, A
4
cannot be a hydrogen atom or a nitro group. A metal complex having the ligand is also provided and is useful as a blood pool contrast agent or a targeting contrast agent.
提供了一种Formula (I)的
配体:
其中A4代表氢原子、硝基、
氨基、
硫氰基或—Z—Y,其中Z是二价连接基团,Y是源自
生物相容分子的基团,但当X为亚甲基时,A4不能是氢原子或硝基。还提供了具有该
配体的
金属配合物,可用作血池造影剂或靶向造影剂。