Syntesis of novel N-substituted 3-(aminosulfonyl)-2H-1-benzopyran-2-one derivatives and their biological activity
Method of syntesis of novel N-substituted 3-(aminosulfonyl)-2H-1-benzopyran-2-one in the Knoevenagel condensation conditions. Studing the biological activity of derivatives against protozoan and helminth parasites, active against Onchocerca lienalis.
Подобные документы
The conditions of a reaction between pyrite medium-metamorphized coal and air-steam mixture in the kinetic area. Development of experimental-statistical mathematical models. Determination of the optimal factors for the oxidative desulfurization of coal.
статья, добавлен 23.02.2016The role of the technique of volumetric titration with a working solution of sodium thiosulfate with a visual indication of the starch equivalence point during the analysis of the residual active chlorine. Evaluation of its advantages and disadvantages.
статья, добавлен 10.05.2018The development of selective oxidation of simply accessible dihydroxy-dypropoxycalix[4]arene to nitrocalixmonoquinone by mixture of 75 % nitric acid and glacial acetic acid. Synthone for design of optical sensors and redox-sensitive bio-active compounds.
статья, добавлен 11.02.2014Investigations concerning the processes of plugging stone structure formation, using X-ray diffraction, electronic microscopy were implemented. Influence of active mineral additives of metakaolin on the properties of plugging mortar were established.
статья, добавлен 21.12.2016Analysis of the results of the design and selection of compounds antimicrobial ointments containing gentamicin as the main active ingredient gallotannin and succinyl as a component of antiresistant against multiresistant strain of Pseudomonas aeruginosa.
статья, добавлен 29.10.2016Study of the process of intramolecular cyclization products of epichlorohydrin aminolysis of secondary amines. Analysis of the energy characteristics obtained in vacuum and in acetonitrile solution with water as an "active" solvation partner of reaction.
статья, добавлен 30.10.2016Effect of the segregation of electrically active dopants. Diffusion theory of the hole current. Polysilicon emitter contacts and its dependence on dopant concentration. Hole mobility versus grain size for two values of the total dopant concentration.
статья, добавлен 29.04.2017We studied the effect of addition of urea (NH2)2C=O] capable of complex formation with chromium ion (Cr+3) with the formate on the coating layer specifications. Study the correlation ratio between chromium ion and urea content in a manner that changes pH.
статья, добавлен 04.11.2020The mechanism of binding of Cr(acac)3 molecules at active sites of the surface of silica and alumina supports. Silica support due to hydrogen bonding with acetylacetonate ligand. Interaction of p-electrons of acetylacetonate ligands with Al3+ sites.
статья, добавлен 19.03.2014Catalytic, electrical, optical and magnetic properties of cobalt sulfide. Chemical structure and application of inorganic compounds and salts the sulfurous acid. Brief description of the structure of pyrite. Methods for the synthesis of the metals.
статья, добавлен 30.07.2016The hydrothermal method for preparation nanostructures with controllable morphologies. Synthesis of different morphologies of PbTe such as nanoparticles, nanorods of PbTe with using of Pb(NO3)2, TeCl4 and N2H4H2O in presence of different surfactants.
статья, добавлен 30.07.2016Preparing of mesoporous organic-inorganic hybrid composites on glass substrates by the sol-gel method for testing the proteins adhesion. The coatings of colloidal silica, polysiloxane sol methyl-modified sols and with various wettability properties.
статья, добавлен 02.04.2014The use of cation exchanger as a catalyst for the esterification reaction of diisopropyl ether absolutes - a method for creating waste-free technology for the production of isopropyl alcohol. The physical-chemical properties of received esterificates.
статья, добавлен 20.09.2018- 89. Study of processes during electrolysis of organic dye solution by means of ion-photon spectrometry
Spectral composition and quantum yield of radiation of the excited particles sputtered by an ion beam from surfaces of the dried sediment formed on electrodes at the electrolysis of the organic dye were studied by the method of ion-photon spectrometry.
статья, добавлен 27.07.2016 Research and characteristics of the methanation of carbon dioxide under atmospheric pressure over a catalyst containing 5% of metals prepared by the impregnation method. Measured of the specific surface area by low-temperature adsorption of argon.
статья, добавлен 29.09.2016- 91. Reactions of 1-(4-hydroxyphenyl)-3-(4-nitrophenyl)-5-ethyl-1,2,4-triazole with electrophilic agents
To synthesize new biologically active compounds, the reactions of electrophilic substitution of 1-(4-hydroxyphenyl)-3-(4-nitrophenyl)-5-ethyl-1, 2, 4-triazole (I) have been studied. The structure of the new compounds was confirmed by 1H NMR spectra.
статья, добавлен 27.07.2016 New facile method for the controllable synthesis of high quality single-phase nanowires with from nanowires templates. Detailed characterization of the superconducting and transport properties of nanowires. Synthesis of porous nanowires and nanotubes.
статья, добавлен 30.07.2016A new universal method of estimating the chemical shifts values of the methylene groups. Change the values of 1H and 13C each methylene group in the result of the conversion by replacing the long fragments –(CH2)K– and –(CH2)I– of the Vice alculated.
статья, добавлен 23.02.2016Anodic deposition of own and extrinsic hydroxides on aluminium from electrolyte was studied by voltastatic method at low and high voltages. The mechanism of precipitation using the conception of fast neutralization coagulation, the models of nucleation.
статья, добавлен 27.07.2016Plastic additives as a wide range of chemicals used by resin manufacturers, compounds and manufacturers to improve the properties, processing and characteristics of polymers. Features of their chemical composition and conditions of effective use.
статья, добавлен 10.03.2019Technique of chemical etching as a promising method for creating nanostructures of si. The development of photovoltaic converters and methods of production resoursesaving for silicon micro - and nanostructures based on isotropic and anisotropic etching.
статья, добавлен 30.07.2016The modification action of polyvinylpyrolidone on morphological peculiarities of magnesium hydrosilicate powder has been investigated. The most effective modification method is observed during joint precipitation of the system liquid components and PVP.
статья, добавлен 30.08.2016Development of a method of mixing the hydroxides for the preparation of Lі[Ni0.5Co0.25Mn0.25]O2 from the respective products. Determination of average grain size, the measurement of impedance. Study of electrochemical properties using cyclic voltammetry.
статья, добавлен 21.12.2016To study antimicrobial properties of the synthesized surfactants, the method of consequent dilution was used. The experiments were carried out in the test tubes contained a surfactant at different concentrations and 1 ml of the physiological solution.
статья, добавлен 03.03.2021Obtaining JBW zeolite from hydrogels under hydrothermal conditions by alkaline reaction using NaOH as an activating agent. Orthorhombic space group Pmc21 with unit cell parameters, X-ray powder diffraction. Comprehensive study of the synthetic zeotype.
статья, добавлен 18.01.2021