Gd-Complexes of DTPA-bis(amides) Functionalized by Pyridine and Picolinamide: Synthesis, Thermodynamic Stability, and Relaxivity Properties

The work describes EPR and 17 O NMR measurements followed by theoretical calculation of the rotational correlation time (τR), the water residence time (τm), and the longitudinal electronic spin relaxation time (T1e) for two new gadolinium complexes 1 and 2 of the type [Gd(L)(H2O)] (L = tranexamic esters) in order to investigate their efficiency as a paramagnetic contrast agent (PCA). Of three correlation times, τR plays a major and predominant role to the unusually high relaxivity of 1 and 2 as compared with that of clinically approved MR CAs such as, and [Gd(DOTA)(H2O)] -(Dotarem ® ). The presence of bulky tranexamic ester in the ligand seems to be responsible for the conformational rigidity, which in turn causes such great an increase in τR.

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Gd-Complexes of DTPA-bis(amides) Functionalized by Pyridine and Picolinamide: Synthesis, Thermodynamic Stability, and Relaxivity Properties

Abstract: ) in HP-β-CD solutions.

Cited by 2 publications

References 23 publications

Design, synthesis and docking study of novel picolinamide derivatives as anticancer agents and VEGFR-2 inhibitors

Design, synthesis and docking study of novel picolinamide derivatives as anticancer agents and VEGFR-2 inhibitors

Determination of Correlation Times of New Paramagnetic Gadolinium MR Contrast Agents by EPR and¹⁷O NMR

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Gd-Complexes of DTPA-bis(amides) Functionalized by Pyridine and Picolinamide: Synthesis, Thermodynamic Stability, and Relaxivity Properties

Abstract: ) in HP-β-CD solutions.

Cited by 2 publications

References 23 publications

Design, synthesis and docking study of novel picolinamide derivatives as anticancer agents and VEGFR-2 inhibitors

Design, synthesis and docking study of novel picolinamide derivatives as anticancer agents and VEGFR-2 inhibitors

Determination of Correlation Times of New Paramagnetic Gadolinium MR Contrast Agents by EPR and17O NMR

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Determination of Correlation Times of New Paramagnetic Gadolinium MR Contrast Agents by EPR and¹⁷O NMR