[EN] NOVEL CHELATING AGENTS AND CONJUGATES THEREOF, THEIR SYNTHESIS AND USE AS DIAGNOSTIC AND THERAPEUTIC AGENTS<br/>[FR] AGENTS COMPLEXANTS ET CONJUGUES ; SYNTHESE ET UTILISATION A DES FINS DIAGNOSTIQUES ET THERAPEUTIQUES
申请人:THERAPHARM GMBH
公开号:WO2003008394A1
公开(公告)日:2003-01-30
The present invention relates to novel bifunctional chelates that are based on asymmetrical cyclen derivatives. The chelates contain either three acetates and one methylphosphonic arm or three acetates and one methylphosphonic arm enabling to link the chelate through P-alkyl within phosphoric acid derivative or through P-O-alkyl within phosphonic derivative to any organic backbone suited for targeting. Suitable targeting moieties are monoclonal antibodies, their fragments and recombinant derivatives such as single chain antibodies, diabodies, triabodies, humanized, human or chimeric variants but also peptides, aptamers, spiegelmers, nucleotides, anti sense oligomers and conventional small molecules. These novel bifunctional chelates are suited for the production of kits for the routine labelling of targeting moieties to be used in radiotherapy with radiometals such as Yttrium-90, or for Magnetic Resonance Imagining (MRI) using Gadolinium.