2-HYDROXY-1-OXO 1,2 DIHYDRO ISOQUINOLINE CHELATING AGENTS

摘要

The invention provides a new class of strongly chelating multidentate ligands based on a 2-hydroxy-1-oxo-1,2-dihydro-isoquinoline-3-carboxylic acid scaffold (hereafter 1,2-HOIQO) in combination with polyamine backbones. The extremely stable bidentate 1,2- HOIQO moiety can be synthesized by standard synthetic methodology on a large scale. An advantageous feature is the possibility to introduce a wide range of substituents on the benzene ring by standard transformations (like electrophilic aromatic substitutions). This allows, for example, for the tuning of chemical, photophysical, and solubility properties, as well as the attachment of functional moieties, relevant for sensing and imaging applications (e.g. DNA, proteins, antibodies, fluorophores, etc.). The combination of the 1,2-HOIQO chelators with polyamine backbones provides very strongly binding ligands for a variety of metals including first-row transition metals, lanthanides, actinides, etc. Metal complexes of this kind are expected to be useful in a number of applications (e.g. luminescence, MRI, actinide sequestering, metal chelation therapy, metal radioisotope labeling, etc.).