نتایج جستجو برای: benzene derivatives

تعداد نتایج: 123637  

Journal: :Molecules 2017
Gregory M Rankin Sally-Ann Poulsen

The synthesis of saccharin (1,2-benzisothiazol-3-one-1,1-dioxide) derivatives substituted on the benzene ring has seen limited development despite the longevity of this compound's use as an artificial sweetener. This type of saccharin derivative would however present attractive properties for the development of new bioactive, drug-like small molecule compounds. Here we report the derivatisation...

2010
Xueshu Li Sean Parkin Michael W. Duffel Larry W. Robertson Hans-Joachim Lehmler

The mol-ecular structure of the title compound, C(14)H(11)Cl(3)O(4)S, displays a biphenyl dihedral angle of 4.9 (2)° between the benzene rings, which is significantly smaller than the calculated dihedral angle of 41.2° of biphenyl derivatives without ortho substituents. The C(Ar)-O bond length of 1.432 (4) Å is comparable with other sulfuric acid biphenyl-4-yl ester 2,2,2-trichloro-ether ester ...

Journal: :Chemical & pharmaceutical bulletin 1999
S Igarashi T Kimura R Naito H Hara M Fujii H Koutoku H Oritani T Mase

In a search for novel nonsteroidal inhibitors of human prostatic 5 alpha-reductase, we found a new series of phenoxybenzoic acid derivatives to be potent human prostatic 5 alpha-reductase inhibitors. Among them, 4-(biphenyl-4-yloxy)benzoic acid derivatives (2n, YM-31758), 2o and 2s showed more potent inhibitory activities than finasteride with IC50 values of 0.87, 0.67 and 0.56 nM, respectively...

2015
S Devikala

Multi-walled carbon nanotubes (MWCNT) modified DNA based biosensors were prepared by immobilizing dsDNA over MWCNT coated graphite electrode. The film forming abilities of MWCNT coated graphite electrodes were studied using Electrochemical Impedance Spectroscopy (EIS) and Cyclic Voltammetry (CV) by placing the electrodes in electrolyte containing redox couple. Differential Pulse Voltammetry (DP...

Journal: :Electrophoresis 1997
C Akbay S A Shamsi I M Warner

A double alkyl chain di(2-ethylhexyl)phosphate (DEHP) is introduced as a potential anionic micellar pseudophase for a wide range of benzene derivatives and/or polycyclic aromatic hydrocarbons (PAHs). Several parameters such as concentration of phosphated surfactant, type and concentration of organic solvents (acetonitrile, isopropanol, and methanol), as well as capillary electrophoresis separat...

Journal: :Acta biochimica Polonica 2011
Danuta Wojcieszyńska Izabela Greń Katarzyna Hupert-Kocurek Urszula Guzik

The purpose of this study was purification and characterization of phenol monooxygenase from Stenotrophomonas maltophilia strain KB2, enzyme that catabolises phenol and its derivatives through the initial hydroxylation to catechols. The enzyme requires NADH and FAD as a cofactors for activity, catalyses hydroxylation of a wide range of monocyclic phenols, aromatic acids and dihydroxylated deri...

Journal: :Chemical Record 2021

The cover picture shows the electrochemical detection of dihydroxy benzene by nano-electrocatalysts based on carbonaceous nanomaterials (i.e., carbon nanotubes, graphene, and their derivatives) non-carbonaceous metal-organic frameworks, molecular imprinted polymers, other nanomaterials). See Reviews Part 1 (DOI:10.1002/tcr.202100043) 2 (DOI:10.1002/tcr.202100044) Md. Abdul Aziz, A. J. Saleh Aha...

Journal: :Journal of enzyme inhibition and medicinal chemistry 2016
Kaan Kucukoglu Fatih Oral Tevfik Aydin Cem Yamali Oztekin Algul Hiroshi Sakagami Ilhami Gulcin Claudiu T Supuran Halise Inci Gul

A series of polymethoxylated-pyrazoline benzene sulfonamides were synthesized, investigated for their cytotoxic activities on tumor and non-tumor cell lines and inhibitory effects on carbonic anhydrase isoenzymes (hCA I and hCA II). Although tumor selectivity (TS) of the compounds were less than the reference compounds 5-Fluorouracil and Melphalan, trimethoxy derivatives 4, 5, and 6 were more s...

The three components one pot synthesis of 2-amino-4H-benzo-[b] -pyran derivatives were obtained in good to excellent yields within short reaction time by condensing dimedone, aldehydes and malanonitrile or ethylcyanoacetate using a catalytic amount of (diacetoxyiodo)benzene as hypervalent iodine in aqueous ethanol under reflux conditions have been discussed. This aqua mediated Knoevenagel-cyclo...

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