Synthesis and structural characterization of novel neutral fac-M(CO)3(NSO) complexes (M=Re, 99mTc) with N-acetylcysteine derivatives as tridentate NSO ligands
The reaction of [NEt4](2)[Re(CO)(3)Br-3] with equimolar amount of a tridentate NSO ligand in methanol leads to the formation of neutral tricarbonyl rhenium(I) complexes of the general formula Re(CO)(3)(NSO), where the NSO ligand is o-C5H4N-CH2CH2-S-CH2CH(NHCOCH3)COOH (L1H), complex 1 or o-C5H4N-CH2CH2-S-C(CH3)(2)CH(NHCOCH3)COOH (L2H), complex 2. Both complexes have been characterized by elemental analysis and spectroscopic methods, while complex 2 has also been characterized by X-rays analysis. At technetium-99m level, the corresponding fac-[Tc-99m(CO)(3)(NSO)] complexes 3 and 4, were obtained in high yield by reacting ligands L1H or L2H with the fac-[Tc-99m(CO)(3)(H2O)(3)](+) precursor in water. Their structure was established by chromatographic comparison to the prototype rhenium complex using high-performance liquid chromatographic techniques. (C) 2009 Elsevier Ltd. All rights reserved.
Structural and Kinetic Studies on the Formation of Platinum(II) and Palladium(II) Complexes with <scp>l</scp>-Cysteine-Derived Ligands
作者:Tobias Rau、Ralf Alsfasser、Achim Zahl、Rudi van Eldik
DOI:10.1021/ic9711574
日期:1998.8.1
(py-CH(2)-accys) and (alpha)N-acetyl-S-ethylene-2-(2'-pyridine)-L-cysteine (py-C(2)H(4)-accys) with [Pt(en)(H(2)O)(2)](2+) and [Pd(en)(H(2)O)(2)](2+) were investigated structurally by NMR spectroscopy and kinetically by UV-vis and stopped-flow spectrophotometry. The complexes [Pt(en)(py-CH(2)-accys-S,N)](NO(3))(2) (1) and [Pt(en)(py-C(2)H(4)-accys-S,N)](NO(3))(2) (2) were isolated and purified by reversed-phase
Antibody labelling with functionalised cyclam macrocycles
作者:J. Richard Morphy、David Parker、Rikki Alexander、Amarjit Bains、Alex F. Carne、Michael A. W. Eaton、Alice Harrison、Andrew Millican、Alison Phipps、Stephen K. Rhind、Richard Titmas、David Weatherby
DOI:10.1039/c39880000156
日期:——
Functionalised ‘cyclam’ macrocyclic ligands have been selectively attached to thiol residues on a monoclonal antibody and form kinetically inert complexes with Cu2+ and TcV.