Chelated complexes of paramagnetic metals with low toxicity
申请人:Dibra S.p.A.
公开号:US06149890A1
公开(公告)日:2000-11-21
Compounds of formulae (I) and (II) ##STR1## wherein the R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 groups have the meanings defined in the disclosure, are useful chelants for metal ions. The complexes of compounds (I) and (II) with paramagnetic ions are useful as contrast agents for M.R.I. imaging.