作者:Alexander Wilbuer、Danielle H. Vlecken、Daan J. Schmitz、Katja Kräling、Klaus Harms、Christoph P. Bagowski、Eric Meggers
DOI:10.1002/anie.201000682
日期:——
Identified as nanomolar and selective inhibitor of receptor protein kinase VEGFR3 (Flt4), the nontoxic and octahedrally coordinated IrIII complex 1 was synthesized by a stereoselective oxidative addition to a square‐planar coordinated IrI precursor. The arrows in the image indicate positions at which the blood vessel formation in a zebrafish model of angiogenesis has been hampered by 1.
P-donor ligand containing ruthenium half-sandwich complexes as protein kinase inhibitors
作者:Craig Streu、Li Feng、Patrick J. Carroll、Jasna Maksimoska、Ronen Marmorstein、Eric Meggers
DOI:10.1016/j.ica.2011.07.032
日期:2011.11
Metal complexes have emerged as promising and novel scaffolds for the design of enzyme inhibitors. Reported herein are the design, synthesis, and evaluation of protein kinase inhibition properties of pyridocarbazole half-sandwich complexes containing P-donor ligands. The nature of the monodentate P-donor ligand has a strong effect on protein kinase binding properties, most likely due to a direct interaction with the glycine-rich loop in the ATP-binding site. We furthermore discovered that PMe3 pyridocarbazole complexes are interesting lead structures for the design of potent inhibitors for the protein kinase TrkA for which we obtained a nanomolar organometallic inhibitor. (C) 2011 Elsevier B. V. All rights reserved.
Octahedral rhodium(III) complexes as kinase inhibitors: Control of the relative stereochemistry with acyclic tridentate ligands
Octahedral metal complexes are attractive structural templates for the design of enzyme inhibitors as has been demonstrated, for example, with the development of metallo-pyridocarbazoles as protein kinase inhibitors. The octahedral coordination sphere provides untapped structural opportunities but at the same time poses the drawback of dealing with a large number of stereoisomers. In order to address this challenge of controlling the relative metal-centered configuration, the synthesis of rhodium(III) pyridocarbazole complexes with facially coordinating acyclic tridentate ligands was investigated. A strategy for the rapid synthesis of such complexes is reported, the diastereoselectivities of these reactions were investigated, the structure of several complexes were determined by X-ray crystallography, the high kinetic stability of such complexes in thiol-containing solutions was demonstrated in H-1-NMR experiments, and the protein kinase inhibition ability of this class of complexes was confirmed. It can be concluded that the use of multidentate ligands is currently maybe the most practical strategy to avoid a large number of possible stereoisomers in the course of exploiting octahedral coordination spheres as structural templates for the design of bioactive molecules. (C) 2015 Elsevier Inc. All rights reserved.