Synthesis of precursors of iodine-labeled multifunctional ligands containing 2-nitroimidazole for the detection of hypoxic tissues and/or tumors

Biocompatible multifunctional ligands with telomeric structure containing 2-nitroimidazole as affinity marker and tosylate as precursor of 123I radioactive tracer were prepared. Telomerization of appropriate monomers derived from tris(hydroxymethyl)-acrylamidomethane was performed in the presence of dodecanethiol, and either AIBN or tert-butylperoxide. These conjugates are designed to target hypoxic tissues and tumors.