NOVEL PYRIDINE OXIDE COMPOUND, AND PROCESS FOR PRODUCING CARBOXYLIC ACID DERIVATIVE AND OPTICALLY ACTIVE CARBOXYLIC ACID DERIVATIVE WITH THE USE OF THE SAME
Synthesis and in vitro evaluation of diverse heterocyclic diphenolic compounds as inhibitors of DYRK1A
作者:Qingqing Zhou、Tristan A. Reekie、Ramzi H. Abbassi、Dinesh Indurthi Venkata、Josep S. Font、Renae M. Ryan、Lenka Munoz、Michael Kassiou
DOI:10.1016/j.bmc.2018.10.034
日期:2018.12
We report here the synthesis and biological evaluation of new heterocyclic diphenolic derivatives designed as novel DYRK1A inhibitors. The generation of these heterocycles such as benzimidazole, imidazole, naphthyridine, pyrazole-pyridines, bipyridine, and triazolopyrazines was made based on the structural modification of the lead DANDY and tested for their ability to inhibit DYRK1A. None of these
Ruthenium(II)–Pyridylimidazole Complexes as Photoreductants and PCET Reagents
作者:Andrea Pannwitz、Alessandro Prescimone、Oliver S. Wenger
DOI:10.1002/ejic.201601403
日期:2017.1.18
and electron originating from a single donor resembles hydrogen atom transfer (HAT) and can be described thermodynamically by formal bond dissociation free energies (BDFEs). Whereas the class of complexes studied herein has long been known, their N–H BDFEs have not been determined even though this is important in view of assessing their reactivity. Our study demonstrates that the N–H BDFEs in the 3MLCT
Syntheses, Characterizations, and Properties of Electronically Perturbed 1,1‘-Dimethyl-2,2‘-bipyridinium Tetrafluoroborates
作者:Dong Zhang、Eric J. Dufek、Edward L. Clennan
DOI:10.1021/jo052127i
日期:2006.1.1
The syntheses of three new 2,2‘-bipyridinium tetrafluoroborate sensitizers are reported. Their preliminary electrochemical and photophysical properties are compared to the properties of the more widely used pyrylium cation sensitizers. In addition, the first examples of triplet−triplet absorption spectra of 2,2‘-bipyridinium ions are presented.
Catalytic Conversions in Water. Part 22: Electronic Effects in the (Diimine)palladium(II)-Catalysed Aerobic Oxidation of Alcohols
作者:Gerd-Jan ten Brink、Isabel W. C. E. Arends、Marcel Hoogenraad、Göran Verspui、Roger A. Sheldon
DOI:10.1002/adsc.200390057
日期:2003.4
The electroniceffects in the (diimine)Pd(II)-catalysedaerobicoxidation of alcohols were investigated from the viewpoint of both the catalyst and the alcohol. A ‘push–pull' mechanism is operative, where both electron-donating substituents on the benzyl alcohol (ρ=−0.58) and electron-withdrawing groups on the 4,4′-disubstituted-2,2′-bipyridine ligand (ρ=+0.18) increase the reaction rate. The results
Exchange of pyridine and bipyridine ligands in trimethylplatinum(<scp>iv</scp>) iodide complexes: substituent and solvent effects
作者:Biswa Nath Ghosh、Sabine Schlecht
DOI:10.1039/c5ra16541e
日期:——
4-Me2Nbipy) has been synthesized by the reaction of trimethylplatinum(IV) iodide with bipyridine ligands L–L in an equimolar ratio. Also, treatment of mononuclear trimethylplatinum(IV) iodide complexes of pyridine ligands, [PtMe3L2I] (L = py, 4-Mepy, 4-MeOpy and 4-Me2Npy) with the corresponding bipyridine ligands leads to the exchange of the pyridines by the bipyridine ligands, thereby resulting in the
通过反应合成了一系列联吡啶配体[PtMe 3(L–L)I](L–L = bipy,4-Mebipy,4-MeObipy和4-Me 2 Nbipy)的单核三甲基铂(IV)配合物。等摩尔比的碘化三甲基铂(IV)与联吡啶配体L–L的比较。此外,单核治疗trimethylplatinum(的IV)吡啶配体,[PTME的碘络合物3大号2 I](L = PY,4- Mepy,4- MeOpy和4-ME 2Npy)与相应的联吡啶配体导致吡啶被联吡啶配体交换,从而导致形成更稳定的螯合联吡啶复合物。配位体交换反应已经通过1 H NMR光谱研究。单核吡啶配合物[PtMe 3 L 2 I]和相应联吡啶配体L–L的1:1混合物的1 H NMR光谱揭示了两种螯合联吡啶配合物[PtMe 3(L–L)I]和[ PtMe 3(L–L)L] I,在溶液中。发现溶液中吡啶和联吡啶复合物的形态取决于取代基以及溶剂的性质。此外,这里还研究了三种联吡啶配合物[PtMe