高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (10): 1593.

• 论文 • 上一篇    下一篇

氨基苯甲酸修饰的DTPA螯合物及其弛豫性能

魏俊发, 卓仁禧   

  1. 武汉大学化学系, 武汉, 430072
  • 收稿日期:1997-09-02 出版日期:1998-10-24 发布日期:1998-10-24
  • 通讯作者: 魏俊发,男,34岁,博士,教授,现在陕西师范大学化学系.
  • 作者简介:魏俊发,男,34岁,博士,教授,现在陕西师范大学化学系.
  • 基金资助:

    国家863计划(批准号:29-02-02)和中国博士后科学基金资助课题.

Paramagnetic Metal Chelate Complexes of DTPA Modified by Aminobenzoic Acid and Their NMR T1 Relaxivitives

WEI Jun-Fa, ZHUO Ren-Xi   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1997-09-02 Online:1998-10-24 Published:1998-10-24

摘要: 用邻-、对-氨基苯甲酸修饰二乙三胺五乙酸(DTPA),分别得到两种分子中携带芳香基团的双酰胺型DTPA衍生物,合成了它们的顺磁性金属离子螯合物,并研究了其中部分螯合物的inuitroNMRT1弛豫率(R1).结果表明,Gd(Ⅲ)DTPA-B4ABA2-和GdDTPA-B2ABA2-对水质子的弛豫率R1分别为5.5和5.4L·mmol-1·s-1,接近相应的母体螯合物GdDTPA2-的R1值5.2L·mmol-1·s-1.

关键词: 二乙三胺五乙酸, 氨基苯甲酸, 修饰, 钆螯合物, 磁共振成像造影剂

Abstract: Two new DTPA-diamide derivatives bearing two aromatic moieties have been obtained by a modification of DTPA(diethylenetriaminepentaacetic acid) with p- and o- aminobenzoic acid. Their gadolinium, ytterbium, and iron complexes have been synthesized and some of them were examined for the role as the contrast agents for magnetic resonance imaging. The results show that the NMR T1 relaxivitives(R1) for Gd(Ⅲ) DTPA B4ABA2- and Gd(Ⅲ) DTPA B2ABA2- in water solutions are 5.5 and 5.4 L·mmol-1 ·s-1, respectively, which are higher than that of their parent complex, GdDTPA2-.

Key words: Diethylenetriaminepentaacetic acid, Aminobenzoic acid, Modification, Gadolinium chelate, Magnetic resonance imaging contrast agent

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