Contrast Agents for Magnetic Resonance Imaging Synthesized with Ring-Opening Metathesis Polymerization
摘要:
A monomer for ring-opening metathesis polymerization (ROMP) has been developed that also functions as a portion of a GdIII chelating moiety for a magnetic resonance imaging contrast agent. An increase in per GdIII relaxivity was shown upon transition from monomer to polymer. Additionally, extremely large molecular relaxivities were achieved through incorporation of multiple GdIII ions per polymer. The nature of ROMP-derived polymers allows for functionalization of the monomer units and termini through orthogonal chemistry. This strategy is the basis for a new class of highly sensitive, targeted imaging agents.
Contrast Agents for Magnetic Resonance Imaging Synthesized with Ring-Opening Metathesis Polymerization
摘要:
A monomer for ring-opening metathesis polymerization (ROMP) has been developed that also functions as a portion of a GdIII chelating moiety for a magnetic resonance imaging contrast agent. An increase in per GdIII relaxivity was shown upon transition from monomer to polymer. Additionally, extremely large molecular relaxivities were achieved through incorporation of multiple GdIII ions per polymer. The nature of ROMP-derived polymers allows for functionalization of the monomer units and termini through orthogonal chemistry. This strategy is the basis for a new class of highly sensitive, targeted imaging agents.
Magnetic Resonance Imaging Contrast Agents Synthesized Using Ring-Opening Metathesis Polymerization
申请人:Kiessling L. Laura
公开号:US20080063602A1
公开(公告)日:2008-03-13
Polymeric chelating agents and metal chelates, particularly those of lanthanide metals and more specifically those of Gd(III), useful as contrast agents in magnetic resonance imaging (MRI) for therapeutic and diagnostic applications as well as clinical and biomedical research applications. The polymeric chelates are generated using ring-opening metathesis polymerization (ROMP). Polymers can have multiple sites for functionalization allowing for the synthesis of multimodal and targeted contrast agents. Hydroxypyridonate (HOPO)-based chelating moieties are integrated into a ROMP-derived polymer. More specifically, the HOPO-based chelating moiety is integrated into a benzonorbornadiene unit that constitutes the backbone of the polymer. The ROMP-derived polymer chelators can comprise multiple metal ions, particularly Gd(III) ions, in polymers of varying lengths to provide a series of agents with controlled relaxivites. Polymer chelates include those that are water-soluble.
Magnetic resonance imaging contrast agents synthesized using ring-opening metathesis polymerization
申请人:Wisconsin Alumni Research Foundation
公开号:US07807140B2
公开(公告)日:2010-10-05
Polymeric chelating agents and metal chelates, particularly those of lanthanide metals and more specifically those of Gd(III), useful as contrast agents in magnetic resonance imaging (MRI) for therapeutic and diagnostic applications as well as clinical and biomedical research applications. The polymeric chelates are generated using ring-opening metathesis polymerization (ROMP). Polymers can have multiple sites for functionalization allowing for the synthesis of multimodal and targeted contrast agents. Hydroxypyridonate (HOPO)-based chelating moieties are integrated into a ROMP-derived polymer. More specifically, the HOPO-based chelating moiety is integrated into a benzonorbornadiene unit that constitutes the backbone of the polymer. The ROMP-derived polymer chelators can comprise multiple metal ions, particularly Gd(III) ions, in polymers of varying lengths to provide a series of agents with controlled relaxivites. Polymer chelates include those that are water-soluble.
[EN] MAGNETIC RESONANCE IMAGING CONTRAST AGENTS SYNTHESIZED USING RING-OPENING METATHESIS POLYMERIZATION<br/>[FR] AGENTS DE CONTRASTE D'IMAGERIE PAR RÉSONANCE MAGNÉTIQUE, SYNTHÉTISÉS PAR POLYMÉRISATION PAR OUVERTURE DE CYCLE PAR MÉTATHÈSE
申请人:WISCONSIN ALUMNI RES FOUND
公开号:WO2007131084A2
公开(公告)日:2007-11-15
[EN] Polymeric chelating agents and metal chelates, particularly those of lanthanide metals and more specifically those of Gd(III), useful as contrast agents in magnetic resonance imaging (MRI) for therapeutic and diagnostic applications as well as clinical and biomedical research applications. The polymeric chelates are generated using ring-opening metathesis polymerization (ROMP). Polymers can have multiple sites for functionalization allowing for the synthesis of multimodal and targeted contrast agents. Hydroxypyridonate (HOPO)-based chelating moieties are integrated into a ROMP-derived polymer. More specifically, the HOPO-based chelating moiety is integrated into a benzonorbornadiene unit that constitutes the backbone of the polymer. The ROMP-derived polymer chelators can comprise multiple metal ions, particularly Gd(III) ions, in polymers of varying lengths to provide a series of agents with controlled relaxivites. Polymer chelates include those that are water-soluble. [FR] L'invention concerne des chélateurs polymères et des chélates métalliques polymères, notamment ceux de métaux lanthanides et plus particulièrement ceux de Gd(III), pouvant servir d'agents de contraste dans l'imagerie par résonance magnétique (IRM) pour des applications thérapeutiques et diagnostiques ainsi que pour la recherche clinique et biomédicale. Les chélates polymères sont générés par polymérisation par ouverture de cycle par métathèse (ROMP). Des polymères peuvent avoir plusieurs sites de fonctionnalisation permettant la synthèse d'agents de contraste ciblés multimode. Des fragments chélateurs à base d'hydroxypyridonate (HOPO) sont intégrés dans un polymère dérivé par ROMP. De manière plus spécifique, le fragment chélateur à base d'HOPO est intégré dans une unité de benzonorbornadiène qui forme le squelette du polymère. Les chélateurs polymères dérivés par ROMP peuvent comprendre plusieurs ions de métal, en particulier des ions de Gd(III), dans des polymères de longueurs variables pour fournir une série d'agents à relaxivités contrôlées. Les chélates polymères comprennent les chélates hydrosolubles.
Contrast Agents for Magnetic Resonance Imaging Synthesized with Ring-Opening Metathesis Polymerization
作者:Matthew J. Allen、Ronald T. Raines、Laura L. Kiessling
DOI:10.1021/ja061383p
日期:2006.5.1
A monomer for ring-opening metathesis polymerization (ROMP) has been developed that also functions as a portion of a GdIII chelating moiety for a magnetic resonance imaging contrast agent. An increase in per GdIII relaxivity was shown upon transition from monomer to polymer. Additionally, extremely large molecular relaxivities were achieved through incorporation of multiple GdIII ions per polymer. The nature of ROMP-derived polymers allows for functionalization of the monomer units and termini through orthogonal chemistry. This strategy is the basis for a new class of highly sensitive, targeted imaging agents.