This invention relates to novel X-ray contrast agents particularly for use in the cerebrospinal cavities, comprising non-ionic alkanols carrying at least one N-bonded secondary or tertiary amide group and having at least two hydroxyl groups and at least one iodine atom in the molecule. Particularly useful compounds include the N-hydroxyalkyl iodoalkane sulphonamides having at least two hydroxyl groups, tri- and tetra-iodobenzene carrying carbamoyl, acylamino and/or acylaminomethyl substituents and having at least two hydroxyl groups in the molecule and at least one N-hydroxyalkyl group. Particularly preferred compounds comprise 2,4,6-triiodobenzamides which may be 3- and/or 5-substituted with a variety of groups. The compounds all show markedly low toxicities and a number show very high levels of water solubility.
这项发明涉及新型X射线造影剂,特别用于脑脊液腔,包括携带至少一个N-键合的二次或三次酰胺基团并且分子中至少有两个羟基和至少一个
碘原子的非离子烷醇。特别有用的化合物包括至少有两个羟基的N-羟基烷基
碘烷磺酰胺,携带
氨基甲酰、酰胺基或酰
氨基甲基取代基并且分子中至少有两个羟基和至少一个N-羟基的三
碘苯和四
碘苯。特别优选的化合物包括2,4,6-三
碘苯酰胺,它们可能在3-和/或5-位置上被各种基团取代。这些化合物都表现出明显低的毒性,其中一些化合物具有非常高的
水溶性
水平。