申请人:NYCOMED SALUTAR, INC.
公开号:EP0290047A2
公开(公告)日:1988-11-09
N,N′-bis-(pyridoxal-5-phosphate)-alkylenediamine-N,N′-diacetic acids, N,N′-bis-(pyridoxal-5-phosphate)-1,2-cycloalkylenediamine N,N′-diacetic acids, and N,N′-bis-(pyridoxal-5-phosphate)-1,2-arylenediamine-N,N′-diacetic acids, the corresponding monophosphate compounds and monoacetic acid compounds, and their salts and esters form stable, highly soluble chelates with paramagnetic metal ions, and are highly effective NMRI contrast agents. Preferred contrast agents are paramagnetic ion chelates of N,N′-bis-(pyridoxal-5-phosphate)ethylene diamine-N,N′-diacetic acid, N,N′-bis-(pyridoxal-5-phosphate)trans-1,2-cyclohexylenediamine-N,N′-diacetic acid, N,N′-bis-(pyridoxal-5-phosphate)trans-1,2-arylenediamine-N,N′-diacetic acid, and the soluble calcium salts thereof.
Novel intermediates for forming these compounds are N,N′-bis(pyridoxal-5-phosphate)alkylenediimines, N,N′-bis(pyridoxal-5-phosphate)alkylenediamines, N,N′-bis(pyridoxal-5-phosphate)-1,2-cycloalkylenediimines, N,N′-bis(pyridoxal-5-phosphate)-1,2-cycloalkylenediamines, N,N′-bis(pyridoxal-5-phosphate)-1,2-arylenediamines, and the corresponding monophosphate compounds.
N,N′-双-(5-磷酸吡哆醛)-烷基二胺-N,N′-二乙酸、N,N′-双-(5-磷酸吡哆醛)-1,2-环烷基二胺-N,N′-二乙酸、N,N′-双-(5-磷酸吡哆醛)-1,2-芳基二胺-N、N′-二乙酸、相应的单磷酸化合物和单乙酸化合物及其盐和酯与顺磁性金属离子形成稳定、高溶解度的螯合物,是高效的 NMRI 造影剂。首选的造影剂是 N,N′-双(5-磷酸吡哆醛)乙二胺-N,N′-二乙酸、N,N′-双(5-磷酸吡哆醛)反式-1、2-环己二胺-N,N′-二乙酸、N,N′-双-(5-磷酸吡哆醛)反式-1,2-芳二胺-N,N′-二乙酸及其可溶性钙盐。
形成这些化合物的新型中间体有 N,N′-双(5-磷酸吡哆醛)烷二亚胺、N,N′-双(5-磷酸吡哆醛)烷二胺、N,N′-双(5-磷酸吡哆醛)-1、2-环烷基二亚胺、N,N′-双(5-磷酸吡哆醛)-1,2-环烷基二胺、N,N′-双(5-磷酸吡哆醛)-1,2-芳基二胺以及相应的单磷酸盐化合物。