摘要 |
Manganese(II) chelates of N,N min -bis-(pyridoxal)alkylenediamine-N,N min -diacetic acids, N,N min -bis-(pyridoxal)-1,2-cycloalkylenediamine-N,N min -diacetic acids, N,N min -bis-(pyridoxal)-1,2-arylenediamine-N,N min -diacetic acids, N,N min -bis-(pyridoxal)alkylenediamine-N-acetic acids, N,N min -bis-(pyridoxal)-1,2-cycloalkylenediamine-N-acetic acids, N,N min -bis-(pyridoxal)-1,2-arylenediamine-N-acetic acids, and their salts are highly stable, superior NMRI contrast agents. They maintain the manganese(II) ion in the +2 valence state. Preferred contrast agents are manganese(II) ion chelates of N,N min -bis-(pyridoxal)ethylenediamine- N,N min -diacetic acid, N,N min -bis-(pyridoxal)trans-1,2-cyclohexylenediamine-N,N min -diacetic acid, and the salts and esters thereof. Novel chelate forming compounds are the N,N min -bis-(pyridoxal)-1,2-cycloalkylenediamine-N,N min -diacetic acids and N,N min -bis-(pyridoxal)-1,2-arylenediamine-N,N min -diacetic acids, N,N min -bis-(pyridoxal)alkylenediamine-N-acetic acids, N,N min -bis(pyridoxal)-1,2-cycloalkylenediamine-N-acetic acids, N,N min -bis-(pyridoxal)-1,2-arylenediamine-N-acetic acids, and their salts and esters. |
申请人 |
NYCOMED SALUTAR, INC., SUNNYVALE, CALIF., US |
发明人 |
ROCKLAGE, SCOTT M., SARATOGA CALIFORNIA 95070, US;QUAY, STEVEN C., LOS ALTOS HILLS CALIFORNIA 94022, US |