Contrast agents endowed with high relaxivity for use in magnetic resonance imaging (MRI) which contain a chelating moiety with polyhydroxylated substituents
    2.
    发明授权
    Contrast agents endowed with high relaxivity for use in magnetic resonance imaging (MRI) which contain a chelating moiety with polyhydroxylated substituents 有权
    对比剂具有高的放松性,用于磁共振成像(MRI),其含有具有多羟基化取代基的螯合部分

    公开(公告)号:US07988950B2

    公开(公告)日:2011-08-02

    申请号:US11630605

    申请日:2005-06-28

    IPC分类号: A61B5/055 A61K49/10 C07F5/00

    摘要: The present invention relates to a novel class of paramagnetic ion-based contrast i agents of formula (I), wherein a chelating backbone moiety is highly functionalized by the presence of one or more polyhydroxylated chain, that show a pharmacokinetic i profile analogous to that of the commonly used T1-general extravascular agents (NSA) but are further characterized by a higher relaxivity. Formula (I): A(LR)v wherein: A is a linear or cyclic chelating backbone moiety; R is, independently, H or a C2-C70aminopolyol moiety comprising a ‘straight or branched alkyl chain substituted by from 2 to 30 hydroxyl groups, the said chain being optionally interrupted by one or more groups selected from -0-, —NH—, —N NCO—; and optionally substituted by one or more C4-C10 cyclic units; L is, independently, a direct bond or “a divalent straight or branched linker moiety between A and R, at most comprising 20 carbon atoms; V is a positive integer from 1 to 7; with the proviso that at least one of the R groups is other than H; or a physiologically acceptable salt of such ligand.

    摘要翻译: 本发明涉及一类新颖的式(I)的顺磁离子型对比剂,其中螯合骨架部分通过存在一个或多个多羟基化链而被高度官能化,其显示类似于 常用的T1一般血管外药物(NSA),但其进一步特征在于较高的松弛度。 式(I):A(LR)v其中:A是直链或环状螯合骨架部分; R独立地是H或包含被2至30个羟基取代的“直链或支链烷基链”的C2-C70氨基多酚部分,所述链任选地被一个或多个选自-O-,-NH-, -N', - CO - , - CONH - , - NHCO-,-CON'或> NCO-; 并任选地被一个或多个C 4 -C 10环单元取代; L独立地是直接键或“A和R之间的二价直链或支链连接体部分,最多包含20个碳原子; V是1到7的正整数; 条件是至少一个R基团不是H; 或这种配体的生理上可接受的盐。

    Preparation of 5-acylamino-2,4,6-triiodo- or tribromo-benzoic acid
derivatives
    8.
    发明授权
    Preparation of 5-acylamino-2,4,6-triiodo- or tribromo-benzoic acid derivatives 失效
    5-亚氨基-2,4,6-三异丙基或三溴代苯甲酸衍生物的制备

    公开(公告)号:US5066823A

    公开(公告)日:1991-11-19

    申请号:US424216

    申请日:1989-10-10

    摘要: A process for the preparation of 5-acylamino-2,4,6-triiodo or tribromo-benzoic acid derivatives of formula (I), wherein X is I or Br, R is H or a variously substituted alkyl, or a group of formula (II), wherein X has the above meanings; Y is hydroxy, alkoxy, hydroxyalkoxy, alkylamino or hydroxyalkylamino; Z may be the same as COY or it is hydroxylalkylaminocarbonyl provided that at least one of the two acyl or R groups is hydroxy-substituted, which process comprises the rearrangement of the corresponding 5-(alkylaminocarbonyl-alkoxy)-2,4,6-trioodo ro tribromo-benzoic acid derivatives, in the presence of bases.

    摘要翻译: PCT No.PCT / EP88 / 00453 Sec。 371日期:1989年10月10日 102(e)日期1989年10月10日PCT提交1988年5月20日PCT公布。 出版物WO88 / 09328 日本公报1988年12月1日。一种制备式(I)的5-酰基氨基-2,4,6-三碘或三溴 - 苯甲酸衍生物的方法,其中X是I或Br,R是H或各种取代的 烷基或式(II)的基团,其中X具有上述含义; Y是羟基,烷氧基,羟基烷氧基,烷基氨基或羟烷基氨基; Z可以与COY相同,或者它是羟基烷基氨基羰基,条件是两个酰基或R基团中的至少一个是羟基取代的,该方法包括相应的5-(烷基氨基羰基 - 烷氧基)-2,4,6- 三卤代三溴 - 苯甲酸衍生物,在碱的存在下。