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    • 8. 发明申请
    • Polyamine-substituted ligands for use as contrast agents
    • 用作造影剂的多胺取代的配体
    • US20070202047A1
    • 2007-08-30
    • US11649503
    • 2007-01-04
    • Markus WolfUlrike Bauder-WustUwe HaberkornMichael EisenhutWalter Mier
    • Markus WolfUlrike Bauder-WustUwe HaberkornMichael EisenhutWalter Mier
    • A61K49/10C07F5/00C07D257/02
    • C07D257/02A61K49/103A61K49/106
    • The present invention relates to a polyamine-substituted ligand for the preparation of a contrast agent derived from a chelating molecule selected from the group consisting of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) and diethylentriamine-pentaacetic acid (DTPA), wherein at least one of the carboxylic groups of the chelating molecule is reacted with an amine of formula HNR1R2 to form an amide bond, wherein R1, R2 are independently selected from the group consisting of H; (CH2)n—NR3R4; and R5; R3, R4 are independently selected from the group consisting of H; (CH2)m—NR6R7; and (CH2)m-1—CH3; R6, R7 are independently selected from the group consisting of H; and (CH2)o-1—CH3; n, m, o are independently 2, 3, or 4; R5 is of formula and optionally at least one of the carboxylic groups of the chelating molecule is further reacted with a monoalkylamine having 1 to 18 carbon atoms to form an amide bond; provided that at least one of R1, R2 is other than H. Furthermore, the invention relates to contrast agents for magnetic resonance imaging (MRI) comprising said ligands and in-vivo diagnostic methods based on MRI using said contrast agents.
    • 本发明涉及用于制备衍生自螯合分子的造影剂的多胺取代配体,所述螯合分子选自1,4,7,10-四氮杂环十二烷-1,4,7,10-四乙酸(DOTA )和二乙基三胺五乙酸(DTPA),其中螯合分子的至少一个羧基与式HNR 1 R 2的胺反应形成 酰胺键,其中R 1,R 2,R 2独立地选自H; (CH 2)n - NR 3 - 3 - - - - - - - 和R 5; R 3,R 4,R 4独立地选自H; (CH 2 CH 2)m -NR 6 R 6 R 7 R 7, 和(CH 2 CH 2)m-1 -CH 3 3; R 6,R 7,R 7独立地选自H; 和(CH 2)2 -O-1 -CH 3; n,m,o分别为2,3或4; R 5是下式,并且任选地,螯合分子的至少一个羧酸基团与具有1至18个碳原子的单烷基胺进一步反应以形成酰胺键; 条件是R 1,R 2和R 2中的至少一个不是H.此外,本发明涉及用于包含所述配体的磁共振成像(MRI)的造影剂,并且在 - 使用所述造影剂的基于MRI的体内诊断方法。