申请人:Bracco Chimica S.p.A.
公开号:US04916246A1
公开(公告)日:1990-04-10
Compounds suitable for NMR imaging having the formula: ##STR1## wherein a is 2 or 3; b is an integer from 0 to 4; Me.sup.(a+) is Fe.sup.(2+), Fe.sup.(3+), Gd.sup.(3+), or Mn.sup.(2+) ; E.sup.(b+) is an ion of an alkali metal, alkaline earth metal, alkyl ammonium, alkanol ammonium, polyhydroxyalkyl ammonium, or basic protonated amino acid, said ions representing a total charge of b; m is an integer from 1 to 5; R is H, alkyl with from 1 to 8 carbon atoms, alkyl with from 1 to 8 carbon atoms wherein from 1 to 5 carbons are substituted with OH; aralkyl with 1 to 4 aliphatic carbon atoms; phenyl or phenyl substituted by halogen, hydroxyl, carboxyl, carboxamide, ester, SO.sub.3 H, sulfonamide, lower alkyl, lower hydroxy alkyl, amino, acylamino; (poly)oxa-alkyl with 1 to 50 oxygen atoms and from 3 to 150 carbon atoms, wherein 1 to 5 hydrogen atoms may be substituted by OH; R.sub.1 is the same as R.sub.2 or is --CH.sub.2 COOZ, --CH(CH.sub.3)COOZ, CH.sub.2 CH.sub.2 --N(CH.sub.2 COOZ).sub.2, a hydroxy arylalkyl, hydroxy pyridylalkyl, hydroxy aryl(carboxy)alkyl or hydroxy pyridyl-(carboxy)alkyl radical, where the aryl or pyridyl radical may be substituted by hydroxyl, hydroxy alkyl, alkyl, halogen, carboxyl or SO.sub.3 H; R.sub.2 is --CH.sub.2 COOZ, --CH(CH.sub.3)COOZ, ##STR2## wherein R.sub.3 is --CH.sub.2 COOZ, --CH(CH.sub.3)COOZ or a monovalent radical having the structure ##STR3## X is a direct chemical bond, --O--, --S--, --NH--, ##STR4## n is the integer 2 or 3, with the proviso that when X represents a direct bond, n is 1, 2 or 3; Z is hydrogen or a unit of negative charge, and --(CH.sub.2).sub.m -- may also be --CH.sub.2 --C(CH.sub.3).sub.2 --.
适用于核磁共振成像的化合物具有以下式:其中a为2或3;b为0到4之间的整数;Me.sup.(a+)为Fe.sup.(2+),Fe.sup.(3+),Gd.sup.(3+)或Mn.sup.(2+);E.sup.(b+)为碱金属离子,碱土金属离子,烷基铵离子,醇胺铵离子,多羟基烷基铵离子或碱性质子化氨基酸离子,这些离子总电荷为b;m为1到5之间的整数;R为H,含有1到8个碳原子的烷基,含有1到8个碳原子的烷基,其中1到5个碳原子被OH取代;含有1到4个脂肪碳原子的芳基烷基;苯基或被卤素、羟基、羧基、羧酰胺、酯、SO.sub.3 H、磺酰胺、低烷基、低羟基烷基、氨基、酰胺基取代的苯基;含有1到50个氧原子和3到150个碳原子的(聚)氧烷基,其中1到5个氢原子可能被OH取代;R.sub.1与R.sub.2相同或为--CH.sub.2 COOZ,--CH(CH.sub.3)COOZ,CH.sub.2 CH.sub.2 --N(CH.sub.2 COOZ).sub.2,羟基芳基烷基,羟基吡啶基烷基,羟基芳基(羧基)烷基或羟基吡啶基-(羧基)烷基基团,其中芳基或吡啶基团可能被羟基、羟基烷基、烷基、卤素、羧基或SO.sub.3 H取代;R.sub.2为--CH.sub.2 COOZ,--CH(CH.sub.3)COOZ,其中R.sub.3为--CH.sub.2 COOZ,--CH(CH.sub.3)COOZ或具有结构的一价基团##STR3## X为直接化学键,--O--,--S--,--NH--,##STR4## n为整数2或3,条件是当X表示直接键时,n为1、2或3;Z为氢或负电荷单位,而--(CH.sub.2).sub.m--也可以是--CH.sub.2 --C(CH.sub.3).sub.2--。