Provided are macrocyclic compounds and compounds with two or more macrocyclic groups, iron coordinated macrocyclic compounds, and iron coordinated compounds with two or more macrocyclic groups. The iron is high-spin iron(III). The iron coordinated compounds may exhibit a negative redox potential (e.g., relative to a normal hydrogen electrode at a biologically relevant pH, for example, a pH of 6.5-7.5). The compounds can be used as MRI contrast agents.
提供的是大环化合物和含有两个或更多大环基团的化合物,
铁配位的大环化合物,以及含有两个或更多大环基团的
铁配位化合物。
铁是高自旋
铁(III)。
铁配位的化合物可能表现出负的氧化还原电位(例如,相对于
生物相关pH下的标准氢电极,例如pH为6.5-7.5)。这些化合物可用作磁共振成像对比剂。