Structure and stability of hexadentate complexes of ligands based on AAZTA for efficient PET labelling with gallium-68
作者:Bradley P. Waldron、David Parker、Carsten Burchardt、Dmitry S. Yufit、Melanie Zimny、Frank Roesch
DOI:10.1039/c2cc37544c
日期:——
Pre-organised tricarboxylate ligands based on 6-amino-perhydro-1,4-diazepine bind 68Ga rapidly and selectively in acetate buffer at pH 4 to 7, forming kinetically stable complexes suitable for use in PET imaging.
Conformational analysis and synthetic approaches to polydentate perhydro-diazepine ligands for the complexation of gallium(iii)
作者:David Parker、Bradley P. Waldron
DOI:10.1039/c3ob40287h
日期:——
twist-chair conformer in the solidstate. Solution state NMR experiments highlight a conformational preference for the bulky aryl groups to adopt an equatorial site, pre-disposing the ligand to metal binding, by adoption of a conformation that creates a facial array of the ligand nitrogen atoms. This ligandconformation averts the formation of less stable metal complexes with differing ligation modes