Analogs of nitrofuran antibiotics are potent GroEL/ES inhibitor pro-drugs
作者:Mckayla Stevens、Chris Howe、Anne-Marie Ray、Alex Washburn、Siddhi Chitre、Jared Sivinski、Yangshin Park、Quyen Q. Hoang、Eli Chapman、Steven M. Johnson
DOI:10.1016/j.bmc.2020.115710
日期:2020.11
intestine cells in vitro. Initially, only the hydroxyquinoline-bearing analogs were found to be potentinhibitors in our GroEL/ES-mediated substrate refolding assays; however, subsequent testing in the presence of an E. coli nitroreductase (NfsB) in situ indicated that metabolites of the nitrofuran-bearing analogs were potent GroEL/ES inhibitor pro-drugs. Consequently, this study has identified a new target
Ortho-ruthenation of 1-naphthalenyl in 1-naphthaldehyde 4-R-benzoylhydrazones: Ruthenium(III) CNO pincer complexes
作者:Koppanathi Nagaraju、Samudranil Pal
DOI:10.1016/j.jorganchem.2013.08.024
日期:2013.11
magnetic moments (μeff) of 1–5 are within 1.92–1.99 μB and they display rhombic EPRspectra in frozen (130 K) dichloromethane–toluene (1:1). Cyclic voltammetry with dimethylformamide solutions of the complexes reveals ligand substituent sensitive Ru(III) → Ru(II) reduction and Ru(III) → Ru(IV) oxidation in the potential ranges −0.27 to −0.36 V and 0.94–1.13 V (vs. Ag/AgCl), respectively.
Half-sandwich ruthenium complexes with acylhydrazone ligands: synthesis and catalytic activity in the <i>N</i>-alkylation of hydrazides
作者:Heng Li、Ke Wang、Lin Yang、Yu-Zhou Luo、Zi-Jian Yao
DOI:10.1039/d3dt04078j
日期:2024.2.6
Novel half-sandwich rutheniumcomplexes termed [(p-cymene)RuClL] were synthesized by chelating arylhydrazone ligands with [(p-cymene)RuCl2]2 and were then fully characterized using different spectroscopic and analytical techniques. The crystal structure of complex 4 indicated that the hydrazone ligands bonded to the ruthenium ion in a bidentate manner through the imine nitrogen and imidazolate oxygen
通过将芳基腙配体与[( p-伞花烃)RuCl 2 ] 2螯合合成了名为[( p-伞花烃)RuCl L ]的新型半夹心钌配合物,然后使用不同的光谱和分析技术对其进行了充分表征。配合物4的晶体结构表明,腙配体通过亚胺氮和咪唑氧以双齿方式与钌离子键合,呈现出以钌原子为中心的伪八面体几何形状。所制备的空气和湿气稳定的半夹心钌配合物在温和条件下对酰肼的N-烷基化表现出优异的催化活性。在钌配合物的催化下,酰肼与不同类型的醇进行一锅反应,生成具有不同取代基的N-烷基化酰肼。该催化剂具有催化效率高、底物范围广、反应条件温和等特点,具有巨大的工业应用潜力。