MULTIDENTATE AZA LIGANDS ABLE TO COMPLEX METAL IONS AND THE USE THEREOF IN DIAGNOSTICS AND THERAPY

摘要

Compounds of general formula (I): in which: R₁, R₂, R₃, R₄, R₅ and FG are as defined in the specification and claims, optionally conjugated with a suitable molecule able to interact with physiological systems; and their chelates with bi-trivalent ions of the metal elements having atomic number ranging between 20 and 31, 39, 42, 43, 44, 49, and between 57 and 83, and radioisotopes, as well as the salts thereof with physiologically compatible bases or acids.