[EN] 1 , 4 -BIS (CARBOXYMETHYL) -6- ' BIS ( CARBOXYMETHYL) AMINO ! -6 -METHYL- PERHYDRO-1 , 4 DIAZEPINE (AAZTA) DERIVATIVES AS LIGANDS IN HIGH RELAXIVITY CONTRAST AGENTS FOR USE IN MAGNETIC RESONANCE IMAGING (MRI ) [FR] AGENTS DE CONTRASTE A RELAXIVITE ACCRUE
dro‐1,4‐diazepine tetra acetic acid) derivatives functionalized with short (C2 and C4) n‐alkyl acidfunctions are reported. The carboxylate functionality is the site for further conjugations for the design of more specific contrast agents (CAs). Interestingly, it has been found that the synthesized complexes display enhanced properties for use as MRI contrast agents on their own. The stability constants
Contrast Agents Endowed with High Relaxivity for Use in Magnetic Resonance Imaging (Mri) Which Contain a Chelating Moiety with Polyhydroxylated Substituents
申请人:Aime Silvio
公开号:US20070258905A1
公开(公告)日:2007-11-08
The present invention relates to a new class of paramagnetic ion-based contrast agents of molecular weight lower than 3.5 kDa that show a pharmacokinetic profile analogous to that of the commonly used T1-general extravascular agents and that are further characterized by a higher relaxivity.
The present invention relates to a novel class of paramagnetic ion-based contrast 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 profile analogous to that of the commonly used T1-general extravascular agents (NSA) but are further characterized by a higher relaxivity.
BIFUNCTIONAL CHELATING AGENTS BASED ON THE 1,4-DIAZEPINE SCAFFOLD (DAZA) FOR NON-INVASIVE MOLECULAR IMAGING
申请人:JOHANNES GUTENBERG-UNIVERSITÄT MAINZ
公开号:US20160136309A1
公开(公告)日:2016-05-19
A compound fur radio metal complexation includes a chelator and one or more biological targeting vectors TV conjugated to said chelator, wherein the chelator has structure (A) or (B)or (C).
based on 1,4-diazepine with groups R
1
, R
2
, R
3
, R
4
, X
1
, X
2
, X
3
. The compound is particularly suited for complexation of radio-isotopic metals, such as
66
Ga(III),
67
Ga(III) and
68
Ga(III).