Showing 1-30 of 45 results for "232017"
K Ganesh et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1621-1629 (2011-06-21)
Raman, UV-vis, 1H NMR, FT-IR, mass and fluorescence spectral techniques were employed to investigate the mechanism of interaction of irbesartan (IRB) drug with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and iodine. Interaction of IRB with iodine yields triiodide ion and its formation was confirmed...
Padraick J Dornbush et al.
Bioorganic & medicinal chemistry letters, 20(17), 5299-5301 (2010-07-30)
Trichomonas vaginalis, a human-infectious protozoan, can display resistance to treatment by metronidazole. A library of 3,4-dichloroaniline amides based on propanil, an herbicide, has been synthesized and screened to test susceptibility to these analogs. From this preliminary study, the most effective...
Chellamuthu Balraj et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 86, 44-50 (2011-11-15)
The interactions of Fe(II)Pc and Fe(III)Pc with π-acceptor 2,3,5,6-tetrachloro-1,4-benzoquinone (p-chloranil, p-CHL) have been investigated spectroscopically (UV/vis and FT-IR) and spectrofluorimetrically at three different temperatures. The stoichiometry of the complexes was found to be 1:1. The results of electronic spectral studies...
Joo-Young Kim et al.
Biochemical pharmacology, 79(10), 1506-1515 (2010-01-26)
BLT2, a low-affinity leukotriene B4 (LTB4) receptor, is a member of the G-protein coupled receptor (GPCR) family and is involved in the pathogenesis of inflammatory diseases such as asthma. Despite its clinical implications, however, no pharmacological inhibitors are available. In...
K Sharma et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 92, 212-224 (2012-03-27)
Methyldopa is a much used antihypertensive drug. It is the subject matter of study mostly for the determination and estimation of methyldopa in pharmaceutical properties. These considerations led us to study the charge-transfer interactions between methyldopa, a centrally acting antihypertensive...
Moamen S Refat et al.
Drug testing and analysis, 3(2), 116-131 (2011-02-16)
The charge-transfer (CT) interactions between the electron donor sulfasalazine (SS) and the acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), p-chloranil (CHL), picric acid (PA) and iodine have been studied spectrophotometrically in CHCl(3) or CH(3) OH solutions. The formed solid CT complexes were also isolated...
Adel Mostafa et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1613-1620 (2011-07-01)
The spectrophotometric characteristics of the solid charge-transfer molecular complexes (CT) formed in the reaction of the electron donors imidazole (IML) and 1-benzylimidazole (BIML) with the σ-acceptor iodine and π-acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), tetracyanoethylene (TCNE) and 2,3,5,6-tetrachloro-1,4-benzoquinone (CHL) have been studied in...
Geoffroy Noël et al.
PloS one, 6(3), e17559-e17559 (2011-03-17)
Aquaporin-4 (AQP4) constitutes the principal water channel in the brain and is clustered at the perivascular astrocyte endfeet. This specific distribution of AQP4 plays a major role in maintaining water homeostasis in the brain. A growing body of evidence points...
Zhenchang Liang et al.
PloS one, 9(8), e105146-e105146 (2014-08-19)
Grapes are rich in phytochemicals with many proven health benefits. Phenolic profiles, antioxidant and antiproliferative activities of twenty-four selected Vitis vinifera grape cultivars were investigated in this study. Large ranges of variation were found in these cultivars for the contents...
Journal of the Chemical Society. Perkin Transactions 1, 571-571 (1994)
Wenbin Liu et al.
Chemosphere, 86(3), 248-251 (2011-10-25)
The production of chloranil is regarded as a potentially significant source of unintentional POPs. This research aimed to identify the contamination levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), hexachlorobenzene (HxCBz), pentachlorobenzene (PeCBz) and polychlorophenols in chloranil samples...
Synthesis of a polyacrylonitrile/tetrachloro-1, 4-benzoquinone gel polymer electrolyte for high-performance Li-air batteries.
Bok K, et al.
Journal of Membrane Science (2018)
Lourdes Santana et al.
Journal of medicinal chemistry, 51(21), 6740-6751 (2008-10-07)
The work provides a new model for the prediction of the MAO-A and -B inhibitor activity by the use of combined complex networks and QSAR methodologies. On the basis of the obtained model, we prepared and assayed 33 coumarin derivatives...
Tetsuya Takeya et al.
Organic letters, 9(15), 2807-2810 (2007-06-22)
A novel oxidative cyclization of quinone-arenols 5 leading to products 6 with a dibenzofuran-1,4-dione structure, which forms the core of several natural products, has been developed and applied to the synthesis of violet-quinone (4).
Ravindra Pandey et al.
The journal of physical chemistry. B, 115(47), 13842-13846 (2011-10-28)
In this article, we report the structure of a 1:1 charge transfer complex between pyridine (PYR) and chloranil (CHL) in solution (CHCl(3)) from the measurement of hyperpolarizability (β(HRS)) and linear and circular depolarization ratios, D and D', respectively, by the...
Muhammad Ahsan Iqbal et al.
Advanced materials (Deerfield Beach, Fla.), 32(37), e2002628-e2002628 (2020-07-21)
Room-temperature, high-sensitivity, and broadband photodetection up to the shortwave infrared (SWIR) region is extremely significant for a wide variety of optoelectronic applications, including contamination identification, thermal imaging, night vision, agricultural inspection, and atmospheric remote sensing. Small-bandgap semiconductor-based SWIR photodetectors generally...
J. Prakt. Chem./Chem.-Ztg., 335, 515-515 (1993)
C Balraj et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1137-1144 (2011-06-03)
The molecular complexes of the donors ketaconazole (KTZ) and oxatomide (OXA) drugs with 2,3,5,6-tetrachloro-1,4-benzoquinone (p-chloranil, p-CHL) have been investigated spectroscopically (UV-vis, FT-IR and 1H NMR) and spectrofluorimetrically in different solvents and temperatures. The stoichiometry of the complexes was found to...
Huihui Ti et al.
Food chemistry, 178, 186-194 (2015-02-24)
The phytochemical profile and antioxidant activities of unprocessed and extruded milled fractions of black rice were investigated. Extrusion increased the free phenolics, anthocyanins and oxygen radical absorbance capacity (ORAC) and decreased the bound forms. The total phenolics, anthocyanins and ORAC...
Prashant Singh et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 75(3), 983-991 (2010-01-19)
In the present work, we report the synthesis and characterization of novel charge-transfer complexes of thiazolidine-2,4-dione (TZD) with sigma acceptor (iodine) and pi acceptors (chloranil, dichlorodicyanoquinone, picric acid and duraquinone). We also evaluated their thermal and electrochemical properties and we...
Electrocatalytic activity of 2, 3, 5, 6-tetrachloro-1, 4-benzoquinone/multi-walled carbon nanotubes immobilized on edge plane pyrolytic graphite electrode for NADH oxidation.
Silva L, et al.
Electrochimica Acta, 53(14), 4706-4714 (2008)
Hiroyuki Miyamura et al.
Chemical communications (Cambridge, England), 46(42), 8052-8054 (2010-09-28)
An in situ coupled oxidation cycle that allows catalytic oxidation of a substrate with catalytic amounts of o-chloranil and novel reusable polymer-immobilized platinum nanocluster catalysts using molecular oxygen as the terminal oxidant was developed.
Yongsheng Chen et al.
PloS one, 9(9), e108140-e108140 (2014-09-23)
Increased consumption of vegetables or plant food has been associated with decreased risk of developing major chronic diseases, such as cancers, diabetes, cardiovascular diseases, and age-related functional decline. Ramie leaves are rich in phenolics and flavonoids, which have been suggested...
Randy M Wadkins et al.
Journal of medicinal chemistry, 48(8), 2906-2915 (2005-04-15)
Carboxylesterases (CE) are ubiquitous enzymes responsible for the metabolism of xenobiotics. Because the structural and amino acid homology among esterases of different classes, the identification of selective inhibitors of these proteins has proved problematic. Using Telik's target-related affinity profiling (TRAP)...
Itamar Yadid et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(24), E2182-E2190 (2013-05-17)
Microbes in contaminated environments often evolve new metabolic pathways for detoxification or degradation of pollutants. In some cases, intermediates in newly evolved pathways are more toxic than the initial compound. The initial step in the degradation of pentachlorophenol by Sphingobium...
Marc Messerschmidt et al.
The journal of physical chemistry. A, 114(29), 7677-7681 (2010-07-06)
Time-resolved Laue crystallography has been employed to study the structural dynamics of a one-dimensional organic conductor (tetrathiafulvalene-p-chloranil) during photoexcitation in the regime of the neutral to ionic phase transition. Exciting this crystalline system with 800 nm 100 fs long optical...
Yongsheng Chen et al.
Journal of agricultural and food chemistry, 63(1), 169-176 (2014-12-11)
Consumption of plant foods has been negatively associated with the risk of developing chronic diseases, which is partly attributed to their rich and diverse phytochemicals. To promote the rational and effective application of Adinandra tea (Adinandra Jack), a traditional Chinese...
Ibrahim A Darwish et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 75(1), 334-339 (2009-11-27)
A selective and simple kinetic spectrophotometric has been developed, for the first time, for the determination of gatifloxacin (GAT) in its dosage forms. The method was based on the formation of a colored N-vinyl chlorobenzoquinone derivative of GAT by its...
Seema Bagchi Chattaraj et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 95, 637-647 (2012-05-15)
Spectrophotometric, FTIR and theoretical studies of the charge-transfer complexes between Isoniazid (pyridine-4-carboxylic acid hydrazide) and the acceptors (p-chloranil, chloranilic acid and tetracyanoethylene) in acetonitrile, their association constants, thermodynamic properties and other related properties were studied. Isoniazid (INH), a widely used...
Shunichi Fukuzumi et al.
Journal of the American Chemical Society, 133(6), 1859-1869 (2011-01-12)
The electron-transfer and hydride-transfer properties of an isolated manganese(V)−oxo complex, (TBP8Cz)Mn(V)(O) (1) (TBP8Cz = octa-tert-butylphenylcorrolazinato) were determined by spectroscopic and kinetic methods. The manganese(V)−oxo complex 1 reacts rapidly with a series of ferrocene derivatives ([Fe(C5H4Me)2], [Fe(C5HMe4)2], and ([Fe(C5Me5)2] = Fc*)...

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