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1,3-Disubstituted p-tert-butylcalix[4]arenes as cholinesterase inhibitors

Stoikova E.; Evtugyn G.; Belyakova S.; Khrustalev A.; Stoikov I.; Antipin I.; Budnikov H.; Konovalov A. (2001)

The inhibitory effect of 1,3-substituted p-tert-butylcalix[4]arenes on butyrylcholinesterase from horse serum has been discovered and kinetically investigated with photometric microassay techniques. The interaction of ...
[2π + 2π]-Cycloaddition of biadamantylidene to 4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione. Effects of temperature, high pressure, and solvent

Kiselev V.; Kornilov D.; Anikin O.; Sedov I.; Konovalov A. (2017)

© 2017, Pleiades Publishing, Ltd. The effects of temperature, solvent nature, and high hydrostatic pressure on the rate of the reaction of biadamantylidene with 4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione have been estimated. ...
4-Phenyl-1,2,4-triazoline-3,5-dione in the ene reactions with cyclohexene, 1-hexene and 2,3-dimethyl-2-butene. the heat of reaction and the influence of temperature and pressure on the reaction rate

Kiselev V.; Kornilov D.; Kashaeva H.; Potapova L.; Konovalov A. (2014)

The values of the enthalpy (53.3; 51.3; 20.0 kJ mol-1), entropy (-106; -122; -144 J mol-1K-1), and volume of activation (-29.1; -31.0; -cm3 mol-1), the reaction volume (-25.0; -26.6; -cm3 mol-1) and reaction enthalpy ...
A first report on ternary complex formation between p-sulfonatothiacalix[4] arene, tetramethylammonium ion and gadolinium (III) ion in aqueous solutions

Amirov R.; McMillan Z.; Mustafina A.; Chukurova I.; Solovieva S.; Antipin I.; Konovalov A. (2005)

The three ternary Gd3+-p-sulfonatothiacalix[4]arene- tetramethylammonium complexes formed in aqueous solutions at pH 4-10 have 1:1:1 stoichiometry and enhanced stability due to Gd3+ coordination via phenolate groups at the ...
A new type of polytopic coordination compound: The synthesis and NMR studies of the first hybrid thiacalix[4]arenoclathrochelates

Solovieva S.; Tyuftin A.; Muravev A.; Gruner M.; Habicher W.; Korobko S.; Antipin I.; Konovalov A.; Bubnov Y.; Voloshin Y. (2013)

Nucleophilic substitution of the reactive chlorine atoms of iron(II) dichloroclathrochelate with thiol-terminated thiacalix[4]arene nucleophiles in the 1,3-alternate conformation afforded the first hybrid calixarenoclathrochelates ...
A Prognosis of the Evaporation and Solvation Enthalpies of Organic Compouds on the Basis of the Topological Index 1χS

Antipin I.; Konovalov A. (1996)

The influence of different types of intermolecular interactions, including dispersion, electrostatic, and specific, on the evaporation enthalpy of organic compounds was estimated. A series of quantitative relations between ...
Activation and reaction volumes for [4 + 2] and [3 + 2] additions involving maleic anhydride

Kiselev V.; Iskhakova G.; Kashaeva E.; Shikhab M.; Medvedeva M.; Konovalov A. (2003)

The partial molar volumes of reactants and products of the [3 + 2] addition of C-(p-nitrophenyl)-N-phenylnitrone to maleic anhydride and of the [4 + 2] addition of 9,10-dimethylanthracene to the same dienophile were ...
Activation and reaction volumes of the reactions of o-and p-nitrophenylsulfenyl chlorides with styrene and cyclohexene in some solvents

Kiselev V.; Kashaeva E.; Potapova L.; Konovalov A. (2007)

The effect of hydrostatic pressure below 1000 kg cm-2 on the rate of reactions of o-and p-nitrophenylsulfenyl chlorides with styrene and cyclohexene was studied. The activation and reaction volumes (cm3 mol-1) for the ...
Aggregation and counter ion binding ability of sulfonatomethylcalix[4] resorcinarenes in aqueous solutions

Amirov R.; Nugaeva Z.; Mustafina A.; Fedorenko S.; Morozov V.; Kazakova E.; Habicher W.; Konovalov A. (2004)

1H NMR spectroscopy, 1H NMR spin-lattice relaxation, conductivity and pH-metric titration data have been used to study the aggregation and counter-ion binding of tetrasulfonatomethylcalix[4] resorcinarenes with methyl ...
Aggregation behavior, anticorrosion effect, and antimicrobial activity of alkylmethylmorpholinium bromides

Mirgorodskaya A.; Lukashenko S.; Yatskevich E.; Kulik N.; Voloshina A.; Kudryavtsev D.; Panteleeva A.; Zobov V.; Zakharova L.; Konovalov A. (2014)

Quaternary ammonium derivatives containing a morpholinium moiety in the head group and exhibiting micelle-forming activity have been synthesized and characterized. These compounds exhibit poly-functional properties: they ...
Aminophosphonates: Synthesis and practical application

Stoikov I.; Mostovaya O.; Vavilova A.; Puplampu J.; Antipin I.; Konovalov A. (2012)

There is an increasing interest in amine derivatives of phosphonic acids. The α- aminophosphonates, organophosphorus analogs of natural amino acids are most studied and attracted for the specialists in various branches of ...
Amphiphiles with polyethyleneoxide-polyethylenecarbonate chains for hydrophilic coating of iron oxide cores, loading by Gd(III) ions and tuning R2/R1 ratio

Stepanov A.; Mustafina A.; Soloveva S.; Kleshnina S.; Antipin I.; Rizvanov I.; Nizameev I.; Mendes R.; Rümmeli M.; Giebeler L.; Amirov R.; Konovalov A. (2016)

© 2015 Elsevier B.V. The present work is aimed at the synthesis of hydrophilic colloids with convenient transverse and longitudinal NMR-relaxation times. Core-shell morphology with iron oxide cores and hydrophilic shell ...
Amphiphilic calixresorcinarene associates as effective solubilizing agents for hydrophobic organic acids: Construction of nano-aggregates

Morozova J.; Syakaev V.; Kazakova E.; Shalaeva Y.; Nizameev I.; Kadirov M.; Voloshina A.; Zobov V.; Konovalov A. (2016)

© 2016 The Royal Society of Chemistry.Here we represent the first example of the formation of mixed nanoscale associates, constructed from amphiphilic calixresorcinarenes and hydrophobic carboxylic acids including drugs. ...
Analysis of the 'representative elementary volume' sandstones reservoir properties using the method of X-ray computed tomography in Ashalchinskoye oil field

Zakirov T.; Galeev A.; Konovalov A.; Statsenko E. (2015)

The study deals with a problem of upscaling data which was obtained from the microscopic study of objects on a macroscopic scale. To investigate this issue we use the concept of 'representative elementary volume' (REV). ...
Anomalies in the change of volumetric parameters of the Diels-Alder reaction in solution

Kiselev V.; Bolotov A.; Shakirova I.; Kashaeva H.; Potapova L.; Konovalov A. (2012)

In this article negative values of the activation volume in retro-Diels-Alder reactions are interpreted in terms of the different possibilities of penetration of the solvent molecules into the sterically branched structures ...
Antianemic activity of water-soluble Na,Ca,Fe-polygalacturonate

Vyshtakaliuk A.; Zobov V.; Minzanova S.; Lantsova A.; Mironov V.; Petrova G.; Ziatdinova F.; Tsepaeva O.; Konovalov A. (2010)

A pronounced antianemic effect of water-soluble Na,Ca,Fe-polygalacturonate is demonstrated. The drug in solution is more effective than in the solid form; it promotes absorption of nutrient calcium and iron. During this ...
Apparent molar volumes and enthalpies of solution of tetracyanoethylene in some solvents and of butan-1-ol in n-octane at different concentrations

Kiselev V.; Kashaeva E.; Shihaab M.; Konovalov A. (2000)

The effects of specific solute-solvent and solute-solute interactions on the change in the apparent molar volumes and in the enthalpies of solution, were found to be proportional in the title solutions at 25 °C.
Application of ferrocene-resorcinarene in silver nanoparticle synthesis

Sergeeva T.; Samigullina A.; Gubaidullin A.; Nizameev I.; Kadirov M.; Mukhitova R.; Ziganshina A.; Konovalov A. (2016)

© 2016 The Royal Society of Chemistry.An amphiphilic resorcinarene with ferrocene groups at the lower rim has been applied as both reductant and stabilizer in the synthesis of colloidal silver nanoparticles. The structure ...
Aqueous and salt solutions of quinine of low concentrations: Self-organization, physicochemical properties and actions on the electrical characteristics of neurons

Murtazina L.; Ryzhkina I.; Mishina O.; Andrianov V.; Bogodvid T.; Gainutdinov K.; Muranova L.; Konovalov A. (2014)

© 2014, Pleiades Publishing, Inc. Self-organization, the physicochemical properties of aqueous and salt solutions of quinine and the effects of salt quinine solutions in a wide range of concentrations (1 · 10−22−1 · 10−3 ...
Aqueous systems based on organophosphorous compounds in low concentrations: Interconnection of self-organization and biological properties

Ryzhkina I.; Murtazina L.; Shevelev M.; Akhmetzyanova L.; Galkina I.; Kuznetsova T.; Knyazev I.; Petrov A.; Konovalov A. (2019)

© 2019, © 2019 Taylor & Francis Group, LLC. It has been shown for the first time that aqueous solutions of quaternary phosphonium salts (cetyltributylphosphonium bromide, cetyltriphenylphosphonium bromide) in the range ...

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