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Journal articles on the topic 'Sulfones – Analyse'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Park, In-Woo, M. V. Ramana Reddy, E. Premkumar Reddy, and Jerome E. Groopman. "Evaluation of Novel Cell Cycle Inhibitors in Mantle Cell Lymphoma." Blood 108, no. 11 (2006): 4748. http://dx.doi.org/10.1182/blood.v108.11.4748.4748.

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Abstract Signature abnormalities in the cell cycle and apoptotic pathway have been identified in mantle cell lymphoma (MCL), affording the opportunity to develop targeted therapies. Here, we report on a novel class of kinase inhibitors, styryl sulfones, that differ from prior cell cycle inhibitors in that they are not related to purines or pyrimidines. We observed that two closely related compounds, ON013100 and ON01370, altered the growth and cell cycle status of MCL lines and potently inhibited the expression of several important molecules, including CDK4, p53, MDM2, cyclin D, and cyclin B.

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2

Mattern, Gregory C., Gilbert D. Parker, Debra L. Green, and Gregory L. Yeutter. "Determination of Phenol Sulfone, Phenol Sulfoxide, and Phenol Sulfonic Acid Metabolites of Fenamiphos in Soil by Liquid Chromatography." Journal of AOAC INTERNATIONAL 78, no. 5 (1995): 1286–93. http://dx.doi.org/10.1093/jaoac/78.5.1286.

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Abstract An analytical method has been developed to quantitate fenamiphos phenol sulfone, phenol sulfoxide, and phenol sulfonic acid in soil. Both control and analyte-fortified soil samples from Fresno, CA, were extracted with methanol–water (2 + 1) and partitioned with ethyl acetate. Fenamiphos phenol sulfone and phenol sulfoxide were determined by re-versed-phase liquid chromatography (LC) with UV detection at 240 nm after cleanup by silica solid-phase extraction. Fenamiphos phenol sulfonic acid was determined by reversed-phase ion-pairing LC with UV detection at 240 nm after cleanup by amin

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3

Aroney, MJ, RJW LeFevre, RK Pierens, HJ Stootman, and MGM Yong. "Dipole Moments, Kerr Constants and Solute Conformations of the Aryl Methyl Sulfones p-XC6H4S(02)CH3 (X = H, Cl, BR or NO2)." Australian Journal of Chemistry 40, no. 3 (1987): 619. http://dx.doi.org/10.1071/ch9870619.

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Measurements are reported of the infinite-dilution dipole moments and molar Kerr constants of dimethyl sulfone and of the four aryl methyl sulfones p-XC6H4S(02)CH3 (X = H, Cl, Br or NO2) dissolved in carbon tetrachloride or dioxan at 298 K and under light of 589 nm. The experimental data are analysed to obtain information on the solution-state conformations in relation to steric and electromeric effects operative between the aryl and methanesulfonyl groups.

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4

Dinnebier, Robert, Natalia Sofina, Lars Hildebrandt, and Martin Jansen. "Crystal structures of the trifluoromethyl sulfonates M(SO3CF3)2 (M = Mg, Ca, Ba, Zn, Cu) from synchrotron X-ray powder diffraction data." Acta Crystallographica Section B Structural Science 62, no. 3 (2006): 467–73. http://dx.doi.org/10.1107/s0108768106009517.

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The crystal structures of divalent metal salts of trifluoromethyl sulfonic acid (`trifluoromethyl sulfonates') M(SO3CF3)2 (M = Mg, Ca, Ba, Zn, Cu) were determined from high-resolution X-ray powder diffraction data. Magnesium, calcium and zinc trifluoromethyl sulfonate crystallize in the rhombohedral space group R\bar3. Barium trifluoromethyl sulfonate crystallizes in the monoclinic space group I2/a(C2/c) and copper trifluoromethyl sulfonate crystallizes in the triclinic group P\bar1. Within the crystal structures the trifluoromethyl sulfonate anions are arranged in double layers with the apola

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5

Schneider, Thomas H., Max Rieger, Kay Ansorg, et al. "Vinyl sulfone building blocks in covalently reversible reactions with thiols." New Journal of Chemistry 39, no. 7 (2015): 5841–53. http://dx.doi.org/10.1039/c5nj00368g.

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A combination of quantum-chemical calculations, Hirshfeld surface analyses and reactivity studies predicts how to turn vinyl sulfones into electrophiles that react covalently but reversibly with thiols.

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6

Thiehoff, C., M. C. Holland, C. Daniliuc, K. N. Houk, and R. Gilmour. "Can acyclic conformational control be achieved via a sulfur–fluorine gauche effect?" Chemical Science 6, no. 6 (2015): 3565–71. http://dx.doi.org/10.1039/c5sc00871a.

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Herein detailed conformational analyses of β-fluorosulfides, -sulfoxides and -sulfones are disclosed, thus extending the scope of the fluorine gauche effect to the 3<sup>rd</sup> Period (X = SR, SOR, SO<sub>2</sub>R; ϕ<sub>FCCS</sub> ≈ 60°).

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7

Zhang, Su Xia, Yi Hong Tang, Yan Lu, and Ya Ming Niu. "Synthesis, Characterization of Poly(Aryl Ether Sulfone)s Based on Naphthalene Isomers." Advanced Materials Research 490-495 (March 2012): 3698–702. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.3698.

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Six new poly(aryl ether sulfone)s were synthesized from 1,5-, 2,6- and 2,7- Bis-(4-fluorosulfonyl)naphthalene isomers with different diphenol. The structure of the poly(aryl ether sulfone)s were characterized by IR spectroscopy and elemental analysis, and the results were in good agreement with the expected structures. The glass transition temperatures were found to be in the range 219-236oC by DSC thermal analysis. The WAXD and thermogravimetric analyses revealed amorphous morphology and excellent thermal stability of the polymers.

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8

Al-Ghamdi, Youssef O., Khalid A. Alamry, Mahmoud A. Hussein, Hadi M. Marwani, and Abdullah M. Asiri. "Sulfone-modified chitosan as selective adsorbent for the extraction of toxic Hg(II) metal ions." Adsorption Science & Technology 37, no. 1-2 (2018): 139–59. http://dx.doi.org/10.1177/0263617418818957.

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In this study, a new category of sulfone-modified chitosan derivatives as surface-selective adsorbents for the extraction of toxic Hg(II) metal has been synthesized in good yield. Sulfone-modified chitosan/5–20 based on variable loading of the corresponding phenacyl bromide (5, 10, 15, and 20% with respect to the original weight of the pure chitosan) was synthesized. The β-ketosulfone derivative, namely 1–(4-bromophenyl)-2-(phenylsulfonyl)ethanone, was first prepared by treatment of the corresponding phenacyl bromide with a sufficient amount of sodium benzene sulfinate; its chemical structure

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9

Teixeira, Cátia, José R. B. Gomes, Thierry Couesnon, and Paula Gomes. "Molecular docking and 3D-quantitative structure activity relationship analyses of peptidyl vinyl sulfones: Plasmodium Falciparum cysteine proteases inhibitors." Journal of Computer-Aided Molecular Design 25, no. 8 (2011): 763–75. http://dx.doi.org/10.1007/s10822-011-9459-4.

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10

Cocchi, Marina, Dario Iarossi, M. Cristina Menziani, Pier G. De Benedetti, and Chiaro Frassineti. "Correlation and multivariate analyses of spectroscopic and dihydropteroate synthase inhibitory activity data in 4-aminoaryl (multisubstituted aryl) sulfones." Structural Chemistry 3, no. 2 (1992): 129–37. http://dx.doi.org/10.1007/bf00671811.

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11

Stout, Steven J., Adrian R. Dacunha, John E. Boyd, and James M. Devine. "Confirmation of Phorate, Terbufos, and Their Sulfoxides and Sulfones in Water by Capillary Gas Chromatography /Chemical Ionization Mass Spectrometry." Journal of AOAC INTERNATIONAL 72, no. 6 (1989): 987–91. http://dx.doi.org/10.1093/jaoac/72.6.987.

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Abstract A gas chromatographic/mass spectrometric method capable of confirming phorate, terbufos, their sulfoxides, and sulfones in water is reported. Parents and their metabolites are separated in less than 5 min using a short capillary GC column and high carrier gas linear velocities. Positive ion chemical ionization mass spectrometry generates (M + H) ions indicative of the different molecular weights of the analytes and at least one confirmatory fragment ion for each analyte. Residues have been qualitatively confirmed at the 1 ppb level in fortified water samples from a variety of sources.

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12

Sudarma, I. Made, Emmy Yuanita, and I. Wayan Suana. "MARKOVNIKOV ADDITION OF CHLOROSULFURIC ACID TO EUGENOL ISOLATED FROM CLOVE OIL." Indonesian Journal of Chemistry 13, no. 2 (2013): 181–84. http://dx.doi.org/10.22146/ijc.21303.

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The objective of this research was to synthesize new compounds with potential biological activity from readily accessed natural products. Eugenol has been reported to posses antioxidant and anticancer properties and was prepared by extracting from clove buds with dichloromethane and followed by isolation using column chromatography to afford pure eugenol (73%). In an attempt to enhance intrinsic activity of this natural compound, some derivatives were possible to synthesize. The main aim of this preliminary research was to transform eugenol to become sulfonic derivative. Eugenol was transforme

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13

Amarandei, Cornelia, Romeo Iulian Olariu, and Cecilia Arsene. "Implications of Matrix Effects in Quantitative HPLC/ESI-ToF-MS Analyses of Atmospheric Organic Aerosols." Proceedings 55, no. 1 (2020): 6. http://dx.doi.org/10.3390/proceedings2020055006.

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Matrix-induced signal suppression or enhancements are known phenomena in electrospray ionization mass spectrometry. Very few studies report on method development for organic aerosols analyses with the evaluation of the matrix effects. The matrix effects lead to errors in the quantification of the analytes and affect the detection capability, precision, and accuracy of an analysis method. The present study reports on the matrix effects in the analysis of organic chemical compounds present in atmospheric aerosol particles collected on quartz filters. A total number of 19 analytes, including diff

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14

Alam, Md Khorshed, Wataru Yamamoto, and Hiromitsu Takaba. "Structural Analyses of [Li Salt+Triglyme)] and Ionic Transport in Li-Air Battery Using Molecular Dynamics Simulation." Bangladesh Journal of Physics 27, no. 1 (2020): 13–22. http://dx.doi.org/10.3329/bjphy.v27i1.49723.

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In this work, molecular dynamics (MD) study of triglyme (G3) solution containing lithium bis (trifluoro methyl sulfonyl) amide (Li[TFSA]) were investigated using classical atomistic force fields. G3 is a typical solvent used in non-aqueous Li-air battery. It shows here coordination of Li+ with G3 and [TFSA]- does not significantly change with increasing the concentration of G3 but self-diffusion coefficient of all the ions increases with increasing G3 concentration. The density of [Li(G3)[TFSA] complex decreases with increasing G3 concentration which lead to accelerate diffusivity of ions.&#x0

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15

VanDrisse, Chelsey M., Kristy L. Hentchel, and Jorge C. Escalante-Semerena. "Phosphinothricin Acetyltransferases Identified UsingIn Vivo,In Vitro, and Bioinformatic Analyses." Applied and Environmental Microbiology 82, no. 24 (2016): 7041–51. http://dx.doi.org/10.1128/aem.02604-16.

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ABSTRACTAcetylation of small molecules is widespread in nature, and in some cases, cells use this process to detoxify harmful chemicals.Streptomycesspecies utilize aGcn5N-acetyltransferase (GNAT), known as Bar, to acetylate and detoxify a self-produced toxin,phosphinothricin (PPT), a glutamate analogue. Bar homologues, such as MddA fromSalmonella enterica, acetylate methionine analogues such as methionine sulfoximine (MSX) and methionine sulfone (MSO), but not PPT, even though Bar homologues are annotated as PPT acetyltransferases.S. entericawas used as a heterologous host to determine whether

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16

Chhakra, Sandhya, A. Mukherjee, H. L. Singh, and Suresh Singh Chauhan. "Synthesis of Novel Substituted 1,5-Benzothiazepines Containing 1,4-Benzodioxane Sulfonyl Moiety." Asian Journal of Organic & Medicinal Chemistry 4, no. 2 (2019): 70–76. http://dx.doi.org/10.14233/ajomc.2019.ajomc-p159.

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An efficient synthesis of novel 2,3,4-trisubstituted 1,5-benzothiazepines (4a-e) incorporating the sulfonyl group is described. Compound (4a-e) was synthesized by the reaction of 3-(1,4-dioxane-6-sulfonyl)-2,4-dimethyl/4-methyl-2-phenyl/2,4-diphenyl/2-ethoxy-4-methyl/2,4-diethoxy propane-1,3-dione (3ae) with 2-aminobenzenethiol with ZnOnanoparticles/pyridine. Formation of compound (3a-e) was achieved by the reaction of 1,4-dioxane-6-sulfonyl chloride (1) with 2,4-dimethyl/4-methyl-2-phenyl/2,4-diphenyl/2-ethoxy-4-methyl/2,4-diethoxy propane-1,3-dione (2a-e). The benzothiazepines (4a-e) obtaine

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17

Hans, Jochen Kuhn, Rosalie Defoin, Klaus Gollnick та ін. "Sensitized photocyclodimerization of αβ-unsaturated cyclic sulfones. Crystal structural analyses of the photodimers of 2-sulfolene and thia-2-cyclohexene-1,1-dioxide." Tetrahedron 45, № 6 (1989): 1667–77. http://dx.doi.org/10.1016/s0040-4020(01)80031-4.

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18

Al Bratty, Mohammad, Neelaveni Thangavel, Ramalingam Peraman, et al. "HPLC–DAD method for investigating pantoprazole for its stress-dependent degradation by photolysis and oxidation." Acta Chromatographica 32, no. 4 (2020): 247–55. http://dx.doi.org/10.1556/1326.2019.00709.

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A reversed-phased high-performance liquid chromatography–diode-array detection (HPLC–DAD) method has been developed for investigating the stress-dependent degradation of pantoprazole (PTZ) by a photolytic and oxidative mechanism. The developed method separated PTZ from its degradation products on a C18 column with a mobile phase consisted of methanol and water (60:40, v/v; pH 3.0) at a flow rate of 1 mL/min. The linear regression coefficient of 0.9995 was obtained for a concentration range from 5 to 25 μg/mL. The % relative standard deviation for repeatability and intermediate precision were b

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19

Scamporrino, Andrea A., Concetto Puglisi, Angela Spina, et al. "Synthesis and Characterization of Copoly(Ether Sulfone)s with Different Percentages of Diphenolic Acid Units." Polymers 12, no. 8 (2020): 1817. http://dx.doi.org/10.3390/polym12081817.

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New functionalized Poly(ether sulfone)s having different molar ratio (10, 20, 30, 50, 70, 100 mol%) of 4,4-bis phenoxy pentanoic acid unit (diphenolic acid; DPA) units were synthesized and characterized by (1H and 13C)-NMR, MALDI-TOF MS, FT-IR, DSC and DMA analyses. The microstructural analysis of the copolymers, obtained by 13C-NMR using an appropriate statistical model, shows a random distribution of copolymer sequences, as expected. The presence of different amount of DPA units along the polymer chains affects the chemical and physical properties of the copolymers. The Tg and the contact an

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20

Zanardini, Elisabetta, Marco Negri, Giovanna Boschin, et al. "Biodegradation of Chlorsulfuron and Metsulfuron-Methyl byAspergillus niger." Scientific World JOURNAL 2 (2002): 1501–6. http://dx.doi.org/10.1100/tsw.2002.281.

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In this work, investigations were performed under laboratory conditions of the degradation ability by a common soil fungus,Aspergillus niger, toward chlorsulfuron and metsulfuron-methyl. The results were very encouraging (79% for chlorsulfuron and 61% for metsulfuron-methyl of total degradation), especially compared to those registered in our previous studies with a Pseudomonas fluorescens strain B2 (about 21 to 32%). Furthermore, the chemical degradation of the two compounds was studied and two products (1[2-methoxy-benzene-1-sulfonyl]-7-acetyltriuretand 1[2-chlorobenzene-1-sulfonyl]-7-acetyl

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21

Javadi, Negar Moshref, та Javad Azizian. "One Pot Synthesis of 6-(4-carboxy-3-methyl-2-phenylquinolin-6-ylsulfonyl)-3-methyl-2-phenylquinoline-4-carboxylic Acids from Dapsone and α-ketobutyric Acid by a Doebner Reaction". Journal of Chemical Research 40, № 12 (2016): 715–17. http://dx.doi.org/10.3184/174751916x14785181796796.

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A series of new 6-(4-carboxy-3-methyl-2-phenylquinolin-6-ylsulfonyl)-3-methyl-2-phenylquinoline-4-carboxylic acids were synthesised by a one-pot reaction of dapsone, α-ketobutyric acid, and aromatic aldehydes in the presence of CuBr2 as a catalyst. Operational simplicity, mild reaction conditions, and eco-friendly procedure make this novel protocol a promising alternative for the preparation of quinoline-4-caboxylic acid derivatives. The structures of the products were established by elemental analyses and spectroscopic data. The biological activity of the new sulfone dimers was evaluated as h

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22

Santos, Karen da Silva, Cinira Magali Fortuna, Fabiana Ribeiro Santana, Marlene Fagundes Carvalho Gonçalves, Franciele Maia Marciano, and Silvia Matumoto. "Meaning of leprosy for people who have experienced treatment during the sulfonic and multidrug therapy periods." Revista Latino-Americana de Enfermagem 23, no. 4 (2015): 620–27. http://dx.doi.org/10.1590/0104-1169.0323.2596.

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AbstractObjective: to analyze the meanings of leprosy for people treated during the sulfonic and multidrug therapy periods.Method: qualitative nature study based on the Vigotski's historical-cultural approach, which guided the production and analysis of data. It included eight respondents who have had leprosy and were submitted to sulfonic and multidrug therapy treatments. The participants are also members of the Movement for Reintegration of People Affected by Leprosy.Results: the meanings were organized into three meaning cores: spots on the body: something is out of order; leprosy or hansen

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23

Sudiana, I. Made. "KARAKTERISTIK BIODEGRADASI ALKIL SULFONAT LINEAR OLEH Pseudomonas aeruginosa I Made Sudiana." Berkala Penelitian Hayati 9, no. 1 (2003): 27–31. http://dx.doi.org/10.23869/bphjbr.9.1.20035.

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Detergent contained of Linear Alkyl Sulfonate (LAS) is toxic material to human, animal and microorganism. Strain S1 isolated from detergent contaminated soil was able to grow in media with LAS as a sole carbon source. LAS degradation took place under aerobic condition, with μmax of 0.31-h, Ks = 7.75 mg/L, Vmax = 1.04 mg/L.hour-1and Km = 8.119 mg/L. Analyses of 16s rDNA revealed that S1 is belonging to Pseudomonas aeruginosa.

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24

Zeng, Lingbin, and L. L. P. Vrijmoed. "Antioxidant activities and phenolic constituents of Cephalotaxus oliveri Mast. aerial parts." Journal of the Serbian Chemical Society 77, no. 4 (2012): 437–51. http://dx.doi.org/10.2298/jsc110801204z.

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The present study was to analyze the antioxidant activity and the responsible chemical constituents in Cephalotaxus oliveri Mast. aerial parts. DPPH (2,2-diphenyl-1-picryl hydrazyl), ABTS [2,2?-azinobis(3-ethylbenzothiazoline- 6-sulfonic acid)], reducing power and total phenolic content assays indicate that the methanol extract of the aerial parts is the most potent radical-scavenger and reducing agent with the highest level of phenolic content among the test extracts. The highly positive linear correlations implicate that the four assays have similar capacity to predict the antioxidant potent

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25

Esmaeili, M., S. S. Madaeni, and J. Barzin. "Morphology and gas-permeation analyses for poly(ether sulfone)/poly(vinyl alcohol) electrolyte composite membranes in the facilitated transport process." Journal of Applied Polymer Science 129, no. 3 (2012): 1569–85. http://dx.doi.org/10.1002/app.38749.

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26

Mollahosseini, Arash, Srija Argumeedi, Amira Abdelrasoul, and Ahmed Shoker. "A case study of poly (aryl ether sulfone) hemodialysis membrane interactions with human blood: Molecular dynamics simulation and experimental analyses." Computer Methods and Programs in Biomedicine 197 (December 2020): 105742. http://dx.doi.org/10.1016/j.cmpb.2020.105742.

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27

Mount, Dwight L., and James W. Miles. "Evaluation of Liquid Chromatographic Methods for Analysis of Chlorphoxim Formulations." Journal of AOAC INTERNATIONAL 68, no. 5 (1985): 887–90. http://dx.doi.org/10.1093/jaoac/68.5.887.

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Abstract Liquid chromatographic (LC) methods for determination of active ingredient in chlorphoxim formulations have been developed independently by Bayer AG and the Centers for Disease Control (CDC). Both methods specify separation on a silica gel column. The Bayer method uses a 5% solution of tetrahydrofuran in hexane as the eluting solvent and quantitates results on the basis of an external standard. The CDC method uses a 5% solution of ethyl acetate in hexane as the eluting solvent and uses 4-fluorophenyl sulfone as an internal standard. The 2 methods were compared by replicate analyses of

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28

Deng, Tingting, Guangxian Zhang, Fangyin Dai, and Fengxiu Zhang. "Mild surface modification of para-aramid fiber by dilute sulfuric acid under microwave irradiation." Textile Research Journal 87, no. 7 (2016): 799–806. http://dx.doi.org/10.1177/0040517516639831.

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In aramid fiber-reinforced composites manufacturing, para-aramid fiber requires surface modification to improve its interfacial adhesion with matrix materials. In this study, aramid fiber was modified with dilute sulfuric acid, which was gradually concentrated under microwave irradiation. Results showed that the aramid fiber could be efficiently modified. Sulfonic acid groups were introduced on the surface of the aramid fiber, as confirmed by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The breaking strength and thermal stability of the modified aramid fiber we

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29

Bae, Byungchan, Kenji Miyatake, Makoto Uchida, et al. "Sulfonated Poly(arylene ether sulfone ketone) Multiblock Copolymers with Highly Sulfonated Blocks. Long-Term Fuel Cell Operation and Post-Test Analyses." ACS Applied Materials & Interfaces 3, no. 7 (2011): 2786–93. http://dx.doi.org/10.1021/am200579z.

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30

Kannan, Arunachalam, Henning Hopf, Ina Dix, Peter G. Jones, and Ludger Ernst. "Synthesis, structure, and first reactions of a new class of thiacyclophanes." Canadian Journal of Chemistry 95, no. 3 (2017): 278–85. http://dx.doi.org/10.1139/cjc-2016-0358.

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In our effort to prepare [m.n]cyclophanes carrying functional groups in their molecular bridges, the thiacyclophanes 14, 19, 20, and 21 have been prepared by simple routes from the pseudo-gem dibromide 10a and the corresponding bis-thiol 10b. The triply-bridged bis-thia-cyclophanes 14, and 19-21 were characterized by their spectroscopic data as well as by X-ray structural analyses. The meta-isomer 20 was oxidized to the bis-sulfone 23, which on flash vacuum pyrolysis (FVP) yielded a product mixture presumably containing the hydrocarbon 26 with a cleaved molecular bridge. Subjecting 23 to Rambe

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Famiglini, Valeria, and Romano Silvestri. "Indolylarylsulfones, a fascinating story of highly potent human immunodeficiency virus type 1 non-nucleoside reverse transcriptase inhibitors." Antiviral Chemistry and Chemotherapy 26 (January 2018): 204020661775344. http://dx.doi.org/10.1177/2040206617753443.

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Indolylarylsulfones are a potent class of human immunodeficiency virus type 1 non-nucleoside reverse transcriptase inhibitors. In this review, the structure activity relationship (SAR) studies to improve the profile of sulfone L-737,126 discovered by Merck AG have been analysed with focus on introduction of the 3′,5′-dimethyl groups at the 3-phenylsulfonyl moiety, the 2-hydroxyethyl tail at the indole-2-carboxamide nitrogen, coupling of the carboxamide nitrogen with one or two glycinamide and alaninamide units, a fluorine atom at position 4 of the indole ring and correlation between configurat

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32

Kumar, K. Pushpa, Reddi Mohan Naidu Kalla, Mavallur Varalakshmi, et al. "Synthesis, spectral characterization, antimicrobial activity and docking studies against DNA Gyrase-A of new 4-chloro-3-nitrobenzene sulfonamide derivatives." Organic Communications 13, no. 4 (2020): 155–64. http://dx.doi.org/10.25135/acg.oc.90.20.11.1858.

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A series of new 4-chloro-3-nitrobenzene sulfonamide derivatives 3(a-j) were synthesized from 4-chloro-3-nitrobenzene sulfonyl chloride by reacting various amino acid esters and amines 2(a-j) in high yields. The structures of all the synthesized compounds were characterized by the IR, NMR (1H & 13C), mass and elemental analyses. Further, all the synthesized compounds were tested for the antimicrobial activity and docking studies were carried out with DNA Gyrase-A. Most of the compounds showed good to moderate antimicrobial activities and binding affinity towards DNA Gyrase-A structure.

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33

Cai, He Fei, Xiao Ping Duan, Juan Xie, and Guang Li. "Synthesis and Characterization of Novel Sulfonated Poly( Arylene Ether Sulfone) Containing Fluorine Group." Advanced Materials Research 332-334 (September 2011): 581–84. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.581.

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A series of novel sulfonated poly(arylene ether sulfone) (SPAES) were prepared by aromatic nucleophilic substitution polycondensation of 4,4’-dichlorodiphenylsulfone (DCDPS), 3,3’-disulfonated-4,4’-dichlorodiphenylsulfone (SDCDPS) and new type fluorinated bisphenol monomer---4-fluorophenyl hydroquinone. Different degree of sulfonation (DS) of these SPAES could be controlled by varying the feed ratio of SDCDPS to DCDPS. High molecular weights of the products were confirmed by inherent viscosity, which could reach 2.43 dl/g. The structures of the obtained polymers were characterized by FTIR, NMR

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Ali, M. Sher, Jerry D. White, Ralph S. Bakowski, Evan T. Phillippo, and Richard L. Ellis. "Analyte Stability Study of N-Methylcarbamate Pesticides in Beef and Poultry Liver Tissues by Liquid Chromatography." Journal of AOAC INTERNATIONAL 76, no. 6 (1993): 1309–16. http://dx.doi.org/10.1093/jaoac/76.6.1309.

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Abstract To optimize conditions for sample collection, preparation, storage, and analysis and to assure the validity of our previously published liquid chromatographic (LC) method for carbamate analysis in tissue, stabilities of 16 N-methylcarbamates in beef, duck, and chicken liver tissues were studied by using 2 sampling protocols. Tissue samples were fortified at room temperature to a concentration 5 to 10 times greater than either the Environmental Protection Agency tolerance level for each compound (if established) or the concentration used in the previously published method. Thereafter,

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Anggoro, Didi Dwi, Purwanto Purwanto, and Rispiandi Rispiandi. "HIDROLISIS SELULOSA MENJADI GLUKOSA DENGAN KATALIS HETEROGEN ARANG AKTIF TERSULFONASI." Reaktor 15, no. 2 (2014): 126. http://dx.doi.org/10.14710/reaktor.15.2.126-131.

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CELLULOCE HYDROLYSIS TO GLUCOSE USING ACTIVE CARBON SULPHONATED HETEROGENOUS CATALYST. Enzimatic process and acid hydrolysis process are common process for conversion of cellulose to glucose. Unfornately, the two processes are expensive process and korosif process. Hence, the new process, that use sulfonaned active carbon catalyst is important to developing. The sulfonated active carbon is made from carbonated coconut sheel under temperature at 350oC. After carbonation, sulfonated active carbon soaked under sulphate acid 96% at 150oC until 15 hours. The result is then washed and dried, and tes

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Priddle, M. W., R. E. Jackson, K. S. Novakowski, et al. "Migration and Fate of Aldicarb in the Sandstone Aquifer of Prince Edward Island." Water Quality Research Journal 22, no. 1 (1987): 173–86. http://dx.doi.org/10.2166/wqrj.1987.013.

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Abstract The persistence of aldicarb in groundwater of the fractured, sandstone aquifer of Prince Edward Island, Canada is assessed. Two potato fields were instrumented with nests of piezometers which were used in the hydraulic and chemical testing of the sandstone aquifer. Groundwaters were sampled and analysed for pH, EH, dissolved oxygen and ammonia, major ions and the toxic aldicarb species - aldicarb, aldicarb sulfoxide and aldicarb sulfone. Aldicarb persistence appears related to (1) its application at time of planting when soil water temperatures are low (&lt;10°C) and (2) the inhib

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Oprea, Corneliu I., Petre Panait, Jeanina Lungu, et al. "DFT Study of Binding and Electron Transfer from a Metal-Free Dye with Carboxyl, Hydroxyl, and Sulfonic Anchors to a Titanium Dioxide Nanocluster." International Journal of Photoenergy 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/893850.

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We report results of density functional theory (DFT) calculations of a metal-free dye, 5-(4-sulfophenylazo)salicylic acid disodium salt, known as Mordant Yellow 10 (MY-10), used as sensitizer for TiO2dye-sensitized solar cells (DSSCs). Given the need to better understand the behavior of the dyes adsorbed on the TiO2nanoparticle, we studied various single and double deprotonated forms of the dye bound to a TiO2cluster, taking advantage of the presence of the carboxyl, hydroxyl, and sulfonic groups as possible anchors. We discuss various binding configurations to the TiO2substrate and the charge

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JIANG, ZHONGQING, YUEDONG MENG, ZHONG-JIE JIANG, and YICAI SHI. "PREPARATION OF HIGHLY SULFONATED ULTRA-THIN PROTON-EXCHANGE POLYMER MEMBRANES FOR PROTON EXCHANGE MEMBRANE FUEL CELLS." Surface Review and Letters 16, no. 02 (2009): 297–302. http://dx.doi.org/10.1142/s0218625x09012627.

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Sulfonated ultra-thin proton-exchange polymer membrane carrying pyridine groups was made from a plasma polymerization of styrene, 2-vinylpyridine, and trifluoromethanesulfonic acid by after-glow capacitively coupled discharge technique. Pyridine groups tethered to the polymer backbone acts as a medium through the basic nitrogen for transfer of protons between the sulfonic acid groups of proton exchange membrane. It shows that the method using present technology could effectively depress the degradation of monomers during the plasma polymerization. Spectroscopic analyses reveal that the obtaine

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Kayahara, Eiichi, Xue Zhai, and Shigeru Yamago. "Synthesis and physical properties of [4]cyclo-3,7-dibenzo[b,d]thiophene and its S,S-dioxide." Canadian Journal of Chemistry 95, no. 4 (2017): 351–56. http://dx.doi.org/10.1139/cjc-2016-0474.

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Cyclic tetramers of 3,7-dibenzo[b,d]thiophene (DBT) and 3,7-dibenzo[b,d]thiophene-5,5-dioxide (DBTO), i.e., [4]cyclo-DBT ([4]CDBT) and [4]cyclo-DBTO ([4]CDBTO), respectively, are synthesized by the platinum-mediated assembly of bis-metallated DBT and DBTO and the subsequent reductive elimination of platinum. This is the first example of the synthesis of sulfur-containing cycloparaphenylene (CPP) derivatives. The structure of [4]CDBTO is unambiguously determined by the single crystal X-ray analysis. Theoretical and experimental analyses of their physical properties reveal the effect of the sulf

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Gao, Hong-Wen. "Multiwavelength Spectral Correction for the Simultaneous Determination of Cu(II), Fe(II), and Zn(II) with 1-(5-Bromo-2-Pyridylazo)-2-Naphthol-6-Sulfonic Acid." Journal of AOAC INTERNATIONAL 84, no. 1 (2001): 532–36. http://dx.doi.org/10.1093/jaoac/84.1.532.

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Abstract A new analytical method is described for the simultaneous determination of various components by multiwavelength spectrophotometry. Because of the influence of the free ligand and various complexes on spectrophotometric absorption, the spectral correction principle was used to establish the calculation matrix formula. The 3 sensitive reactions of Cu(II), Fe(II), and Zn(II), with 1-(5-bromo-2-pyridylazo)-2-naphthol-6-sulfonic acid were studied at pH 10.5. In analyses of fortified samples, the recoveries of Fe, Zn, and Cu were between 93.0 and 103%, 87.0 and 108%, and 92.5 and 108%, res

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Alvi, Muhammad Azeem U. R., Muhammad Waqas Khalid, Nasir M. Ahmad, et al. "Polymer Concentration and Solvent Variation Correlation with the Morphology and Water Filtration Analysis of Polyether Sulfone Microfiltration Membrane." Advances in Polymer Technology 2019 (March 3, 2019): 1–11. http://dx.doi.org/10.1155/2019/8074626.

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Microfiltration flat sheet membranes of polyether sulfone (PES) were fabricated by incorporating varying concentrations of polymer and investigated the influence of substituting solvents. The membranes were prepared via immersion precipitation method. Different solvents that included NMP (N-methyl-2-pyrrolidone), DMF (dimethylformamide), and THF (tetrahydrofuran) were used to analyse their effect on the performance and morphology of the prepared membranes. Two different coagulation bath temperatures were used to investigate the kinetics of membrane formation and subsequent effect on membrane p

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Gbylik-Sikorska, Małgorzata, Anna Gajda, Ewelina Nowacka-Kozak, Beata Łebkowska-Wieruszewska, and Andrzej Posyniak. "Multi-Class Procedure for Analysis of 50 Antibacterial Compounds in Eggshells Using Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry." Molecules 26, no. 5 (2021): 1373. http://dx.doi.org/10.3390/molecules26051373.

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In this work, for the first time, Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry (UHPLC–MS/MS) method was developed for qualitative and quantitative analysis of veterinary antibiotics (cephalosporins, diaminopyrimidines, fluoro(quinolones), lincosamides, macrolides, penicillins, pleuromutilins, sulfonamides, tetracyclines, and sulfones) in hen eggshells. The sample preparation method is based on a liquid–liquid extraction with a mixture of metaphosphoric acid, ascorbic acid, EDTA disodium salt dihydrate, and acetonitrile. The chromatographic separation was performed on L

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Jasem, Hadeer, Angham G. Hadi, Gamal A. El-Hiti, et al. "Tin-Naphthalene Sulfonic Acid Complexes as Photostabilizers for Poly(vinyl chloride)." Molecules 26, no. 12 (2021): 3629. http://dx.doi.org/10.3390/molecules26123629.

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Poly(vinyl chloride) degrades when exposed to ultraviolet light for long durations; therefore, the photostability of polymeric materials should be enhanced through the application of additives. New organotin complexes containing 4-aminonaphthalene-1-sulfonic acid were synthesized and their role as poly(vinyl chloride) photostabilizers were evaluated. The reaction of 4-amino-3-hydroxynaphthalene-1-sulfonic acid and appropriate di- or trisubstituted tin chloride (triphenyltin chloride, tributyltin chloride, dibutyltin dichloride, and dimethyltin dichloride) in methanol under reflux gave the corr

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Jedziniak, Piotr, Małgorzata Olejnik, Jolanta G. Rola, and Teresa Szprengier-Juszkiewicz. "Anthelmintic residues in goat and sheep dairy products." Bulletin of the Veterinary Institute in Pulawy 59, no. 4 (2015): 515–18. http://dx.doi.org/10.1515/bvip-2015-0077.

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AbstractA multiresidue method (LC-MS/MS) for determination of wide range of anthelmintics was developed. The method covered benzimidazoles: albendazole (and metabolites), cambendazole, fenbendazol (and metabolites), flubendazole (and metabolites), mebendazole (and metabolites), oxibendazole, thiabendazole (and metabolites), triclabendazole (and metabolites); macrocyclic lactones: abamectin, doramectin, emamectin, eprinomectin, ivermectin, moxidectin; salicylanilides: closantel, ioxynil, nitroxynil, oxyclosamide, niclosamide, rafoxanid and others: clorsulon, derquantel, imidocarb, monepantel (a

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Erdem, Beyhan, Sezer Erdem, and Ramis Mustafa Öksüzoğlu. "Catalytic Applications of Large Pore Sulfonic Acid-Functionalized SBA-15 Mesoporous Silica for Esterification." Open Chemistry 16, no. 1 (2018): 1233–41. http://dx.doi.org/10.1515/chem-2018-0132.

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AbstractWe report the preparation of pore expanded and sulfonic acid functionalized mesoporous silica catalysts by using different kinds of swelling agents such as 1,3,5-trimethyl benzene (TMB), n-decane (D), n-tridecane (TD), and n-hexadecane (HD) at two different ratios of swelling agent/surfactant. Non-swelled mesoporous silica catalyst, SBA-15-SO3H, was also prepared for comparison. The performance of the sulfonic acid functionalized solid acid catalysts by using one-pot synthesis procedure was evaluated in terms of their catalytic activity in the esterification of propionic acid with meth

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Bacchella, Chiara, James T. Brewster, Steffen Bähring та ін. "Condition-Dependent Coordination and Peroxidase Activity of Hemin-Aβ Complexes". Molecules 25, № 21 (2020): 5044. http://dx.doi.org/10.3390/molecules25215044.

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The peroxidase activity of hemin-peptide complexes remains a potential factor in oxidative damage relevant to neurodegeneration. Here, we present the effect of temperature, ionic strength, and pH relevant to pathophysiological conditions on the dynamic equilibrium between high-spin and low-spin hemin-Aβ40 constructs. This influence on peroxidase activity was also demonstrated using 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and dopamine (DA) oxidation rate analyses with increasing ratios of Aβ16 and Aβ40 (up to 100 equivalents). Interaction and reactivity studies of aggregat

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Li, Feng Hong, Yong Sun, San Xi Li, and Shao Jun Ma. "Synthesis and Characterization of Thermoplastic Biomaterial Based on Acylated Chitosan Oligosaccharide." Applied Mechanics and Materials 117-119 (October 2011): 1433–36. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.1433.

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A series of acylated chitosan oligosaccharides (LCSOs) were synthesized by reacting chitosan oligosaccharide (CSO) with lauroyl chloride in methane sulfonic acid. The chemical structures of LCSOs were characterized by Fourier transform infrared. Differential scanning calorimetry (DSC) showed that LCSOs had two phase transitions during heating. Thermoplastic chitosan oligosaccharide (LCSO-4) has distinct melting temperature (Tm) at 64 °C and 110°C. X-ray diffraction (XRD) analyses indicated that the crystal structure of CSO was changed through acylation and had created new crystal domains of la

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Önal, Emel, Tuğba Muhlise Okyay, Gülçin Ekineker, et al. "Sulfanyl vs sulfonyl, 4,5- vs 3,6- position. How structural variations in phthalonitrile substitution affect their infra-red, crystallographic and Hirshfeld surface analyses." Journal of Molecular Structure 1155 (March 2018): 310–19. http://dx.doi.org/10.1016/j.molstruc.2017.10.069.

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Alghamdi, Abdulaziz Ali, Yahya Musawi Mrair, Fahad A. Alharthi, and Abdel-Basit Al-Odayni. "Catalytic Performance of SBA-15-Supported Poly (Styrenesulfonic Acid) in the Esterification of Acetic Acid with n-Heptanol." Applied Sciences 10, no. 17 (2020): 5835. http://dx.doi.org/10.3390/app10175835.

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A polystyrene sulfonic acid-functionalized mesoporous silica (SBA-15-PSSA) catalyst was synthesized via an established multistep route, employing 2-bromo-2-methylpropionyl bromide as initiator of atom transfer radical polymerization. Fourier-transform infrared spectroscopy, thermogravimetric/differential thermal, Brunauer–Emmett–Teller, and transmission electron microscopy analyses revealed outstanding structural characteristics of the catalyst, including highly ordered mesopores, high surface area (726 m2/g), and adequate estimated concentrations of active sites (0.70 mmol H+/g). SBA-15-PSSA’

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Baddeley, Thomas C., Marcus V. N. de Souza, James L. Wardell, Mukesh M. Jotani, and Edward R. T. Tiekink. "N′-(1,3-Benzothiazol-2-yl)benzenesulfonohydrazide: crystal structure, Hirshfeld surface analysis and computational chemistry." Acta Crystallographica Section E Crystallographic Communications 75, no. 4 (2019): 516–23. http://dx.doi.org/10.1107/s2056989019003980.

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The asymmetric unit of the title compound, C13H11N3O2S2, comprises two independent molecules (A and B); the crystal structure was determined by employing synchrotron radiation. The molecules exhibit essentially the same features with an almost planar benzothiazole ring (r.m.s. deviation = 0.026 and 0.009 Å for A and B, respectively), which forms an inclined dihedral angle with the phenyl ring [28.3 (3) and 29.1 (3)°, respectively]. A difference between the molecules is noted in a twist about the N—S bonds [the C—S—N—N torsion angles = −56.2 (5) and −68.8 (5)°, respectively], which leads to a m

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