Bis(phenylethylamide) Derivatives of Gd‐DTPA as Potential Receptor‐Specific MRI Contrast Agents
作者:Sophie Laurent、Tatjana N. Parac‐Vogt、Kristof Kimpe、Coralie Thirifays、Koen Binnemans、Robert N. Muller、Luce Vander Elst
DOI:10.1002/ejic.200601170
日期:2007.5
DTPA-bis(amide) derivatives bearing phenyl, phenol or catechol groups that mimic side chains of naturally occurring amino acids, such as phenylalanine, tyrosine or dopamine, were synthesized and characterized by elemental analysis, electrospray mass spectrometry, NMR spectroscopy and IR spectroscopy. The gadolinium(III) complexes of the ligands DTPA-bis(tyramide) [DTPA-(TA)2], DTPA-bis(3-hydroxytyramide)
DTPA-bisamide-Based MR Sensor Agents for Peroxidase Imaging
作者:Manuel Querol、John W. Chen、Ralph Weissleder、Alexei Bogdanov
DOI:10.1021/ol050208v
日期:2005.4.1
The synthesis and some properties of two novel DTPA-bisamides are reported. These derivatives were designed as enzyme-activated contrast agents (CA) for magnetic resonance imaging. Both derivatives bear tyramido or 5-hydroxytryptamido groups that could be oligomerized in situ in the presence of peroxidase/H2O2 pair resulting in a net increase in longitudinal (R1) relaxivity.