申请人:GENERAL ELECTRIC COMPANY
公开号:US20140088314A1
公开(公告)日:2014-03-27
A chelating agent, a metal-chelate, and a contrast agent are provided, wherein the chelating agent comprises a compound of structure (I)
wherein R
1
, R
2
, R
3
, R
8
, R
7
, R′
7
R′
1
, R′
2
, R′
3
and R
8
′ are selected from a hydrogen, a protected C
1
-C
3
hydroxyalkyl group, a C
1
-C
3
alkyl group; R
4
and R′
4
are selected from a hydrogen, a hydroxyl group, a protected hydroxy group, a protected C
1
-C
3
hydroxyalkyl group, a C
1
-C
3
alkyl group; n is an integer between 0 and 4; R
5
and R′
5
are selected from a hydrogen, a protecting group selected from the group consisting of C
1
-C
30
aliphatic radicals, C
3
-C
30
cycloaliphatic radicals, C
2
-C
30
aromatic radicals; R
9
and R′
9
are selected form a hydrogen or a protecting group selected from the group consisting of C
1
-C
30
aliphatic radicals, C
3
-C
30
cycloaliphatic radicals, C
2
-C
30
aromatic radicals, m is an integer between 0 and 10; and at least one of R
7
and R′
7
is acidic group or a protected acidic group.
提供了一种螯合剂、金属螯合物和对比剂,其中螯合剂包括结构(I)的化合物,其中R1、R2、R3、R8、R7、R′7、R′1、R′2、R′3和R8′从氢、受保护的C1-C3羟基烷基基团、C1-C3烷基基团中选择;R4和R′4从氢、羟基、受保护的羟基、受保护的C1-C3羟基烷基基团、C1-C3烷基基团中选择;n是0到4之间的整数;R5和R′5从氢、选自C1-C30脂肪基、C3-C30环脂肪基、C2-C30芳香基的保护基中选择;R9和R′9从氢或选自C1-C30脂肪基、C3-C30环脂肪基、C2-C30芳香基的保护基中选择;m是0到10之间的整数;并且R7和R′7中的至少一个是酸性基团或受保护的酸性基团。