Coordination susceptibilities of cinnamaldehyde and cuminaldehyde derived Schiff bases towards the fac-[Re(CO)3]+ core: Formation, computational and DNA interaction studies
摘要:
Herein, we explore the coordination behaviours of Schiff bases derived from constituents of essential oils (viz. cinnamaldehyde and cuminaldehyde) and aromatic amines (viz 2-aminophenol and 4-aminoantipyrene) towards the facial tricarbonylrhenium(I) core. The resultant rhenium(I) compounds: (mu-X)(2)[Re(CO)(3)](2) {where X = 2{[3-Phenylprop-2-en-1-ylidene]amino}phenol (ciap) (for 1) or 2-{[4-(propan-2-yl)benzylidene]amino}phenol (cuap) (for 2), fac-[Re(CO)(3)(apy)Cl] (apy = 4-aminoantipyrene) (3) and fac-[Re(CO)(3)(cinap)Cl] (cinap = 1,5-dimethyl-2-phenyl-4-{[3-phenylprop-2-en-1-ylidene]amino}-1,2-dihydro-3H-pyrazol-3-one) (4) were formed. The metal compounds were spectroscopically characterized and structural elucidations were confirmed by single crystal X-ray diffraction. DFT studies were utilized to rationalize the contrasting coordination behaviours of the structural analogues, 1,5-dimethyl-2-phenyl-4-{[4-(propan-2-yl)benzylidene]amino}-1,2-dihydro-3H-pyrazol-3-one (cumap) and cinap in the formation of 3 and 4, respectively. These metal compounds showed affinities towards Calf-Thymus DNA based on UV-Vis DNA binding titrations and molecular docking studies revealed that they are groove binders. In addition, gel electrophoresis experiments indicated that steric factors has an influence on the DNA cleavage activities of the mono- and dinuclear rhenium(I) compounds. (C) 2018 Elsevier B.V. All rights reserved.
Activated Fly Ash Catalyzing the Synthesis of Novel Potent 4-Thiazolidinones of 4-Amino Antipyrine Anils Using CEM Discover Microwave Methodology and Their Virtual Screening
waste, has been used as an efficient and cost-effective activating catalyst for the synthesis of new potent thiazolidinones (4a–n), starting from imine (3a–n) and thioacetic acid. The reactions were performed under CEM Discover microwave irradiation in solvent-free conditions. This reaction is scalable to a multigram scale and the methodology has resulted in an efficient synthesis. Herein, a benign
摘要 飞灰是一种工业废物,已被用作一种高效且具有成本效益的活化催化剂,用于以亚胺 (3a-n) 和硫代乙酸为原料合成新型强效噻唑烷酮 (4a-n)。反应在无溶剂条件下在 CEM Discover 微波辐射下进行。该反应可扩展到数克规模,并且该方法产生了有效的合成。在此,已经证明了一种用于合成噻唑烷酮的良性、环境友好、高效和极快的方法。基于元素分析、红外 (IR)、质谱和 1 H NMR 光谱数据表征所产生的噻唑烷酮分子。对合成的部分进行了虚拟筛选并讨论了它们可能的生物活性。图形概要
Characterization of Antimicrobial, Antioxidant, and Leishmanicidal Activities of Schiff Base Derivatives of 4-Aminoantipyrine
work, we have synthesized 12 Schiffbasederivatives of 4-aminoantipyrine. In vitro antimicrobial, antioxidant, and cytotoxicity properties are analyzed, as well as in silico predictive adsorption, distribution, metabolism, and excretion (ADME) and bioactivity scores. Results identify two potential Schiff bases: one effective against E. faecalis and the other with antioxidant activity. Both have reasonable
Stabilization of the ruthenium (II) and -(III) centres by chelating N-donor ligands: Synthesis, characterization, biomolecular affinities and computational studies
were conducted primarily by spectroscopic techniques while the single crystal X-ray analysis revealed the distorted octahedrons of the respective metal compounds. Voltammetry experiments of 1–3 illustrated one-electron quasi-reversible redox waves which are attributed to metal oxidation state interconversions. CT-DNA binding affinities and modes of the novel metal complexes 1–3 as well as the formerly