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Browsing Гельмбольдт Володимир Олегович by Title

Now showing items 1-20 of 169

2-Aminobenzoic acid hexafluorosilicate as a new potential caries-preventive agent

Gelmboldt, V. O.; Shyshkin, І. О.; Kobenko, K. R.; Nechaieva, D. S.; Fonari, M. S.; Kravtsov, V. Ch. (Одеський національний університет імені І. І. Мечникова, 2026)

Dental caries remains one of the important, socially significant health problems in most countries of the world and therefore the search for new effective and safe anti-caries drugs is an urgent task of modern pharmacy. ...
About hydrolytic stability of the chelate complexes [SiF4(2,2′-Bipy)] and [SiF4(1,10-Phen)]

Gelmboldt, V. O.; Ganin, Ed. V.; Anisimov, Yu.; Fonari, M. S.; Kravtsov, V. Ch. (2014)

The products of reaction of fluorosilicic acid (FSA) with organic bases, the fluorosilicates of the relevant "onium" cations, find an application as anti-caries agents, ionic liquids, reagents for modified zeolite catalytic ...
Aminomethanesulfonic Acids as Reaction Products in SO2–NH2Alk–CH2O–H2O Systems: Synthesis and Structure

Khoma, R. E.; Gelmboldt, V. O.; Baumer, V. N.; Ennan, A. A.; Vodzinskii, S. V.; Ishkov, Yu. V.; Rakipov, I. M. (2021)

An original procedure was proposed for the synthesis of a series of aminomethanesulfonic acids AlkNHCH2SO3 (Alk = n-Bu, n-Hept, n-Oct, Bn) and N-tris(hydroxymethyl)methylammonium hydroxymethanesulfonate. The structure of ...
Ammonium hexafluorosilicates as potential anti-caries agents: influences of cation effects on the properties of salts

Gelmboldt, V.; Lytvynchuk, I.; Shyshkin, I. (2021)

Dental caries is one of the most important socially significant health problems in both industrialized and developing countries. In recent years, a high caries prophylactic efficacy of ammonium hexafluorosilicate (NH4)2SiF6 ...
Ammonium hexafluorosilicates as potential anti-caries agents: synthesis, structures, solubility, biological activity

Gelmboldt, V. O.; Shyshkin, I. O.; Lytvynchuk, I. V.; Khromagina, L. M.; Fonari, M. S.; Kravtsov, V. Ch. (2024)

Ammonium hexafluorosilicates (AHFS) are a class of inorganic compounds widely used in modern technological practice and laboratory research. In recent years, AHFS have been actively studied as promising caries-preventive ...
Ammonium salts of sulfur-containing oxyanions resulting from reaction of sulfur dioxide with aqueous solutions of diethylentriamine and bis(hexamethylene)triamine

Khoma, R. E.; Baumer, V. M.; Gelmboldt, V. O.; Fedko, N. F.; Ishkov, Yu. V.; Vodzinskii, S. V.; Rakipov, I. M.; Menchuk, D. V. (2024)

Interaction in the system «sulfur dioxide–diethylenetriamine (or bis- (hexamethylene)triamine)–water–air oxygen» results in a mixture of double salts (diethylenetriammonium bis(sulfito)-dithionate (Ia) and bis(sulfito)-sulfate ...
Analysis of the structure influence of ammonium hexafluorosilicates on their anti-caries activity

Gelmboldt, V. O.; Ognichenko, L. M.; Sidelnykova, T. A.; Shyshkin, I. O.; Kuz’min, V. E.; Гельмбольдт, В. О.; Огнiченко, Л. М.; Сідельникова, Т. А.; Шишкін, І. О.; Кузьмiн, В. Є. (ONMedU, 2025)

Currently, ammonium hexafluorosilicates (AHFS) are being studied as promising new type of fluorine-containing agents, which, due to their specific mechanism of anti-caries action, have some advantages compared to known ...
Antibacterial activity of ammonium hexafluorosilicates: solvent effect analysis

Bohatu, S.; Shyshkin, I.; Litvinchuk, I.; Gelmboldt, V.; Guenther, S.; Rozhkovskyi, Ya. (2022)

One of the ten global problems of modern medicine behind the tribute of the World Health Organization is the growing antibiotic resistance (ABR) and the growing number of multi-resistant strains of bacteria. So, for the ...
Biological activity of 3-hydroxymethylpyridinium hexafluorosilicate monohydrate and 4-hydroxymethylpyridinium hexafluorosilicate as candidates for anticaries agents

Gelmboldt, V. O.; Khromagina, L. M.; Nikitin, O. V.; Fizor, N. S.; Гельмбольдт, В. О.; Хромагіна, Л. М.; Нікітін, О. В.; Фізор, Н. С. (2024)

The aim of the study. Determination of the biological activity of new compounds – 3-hydroxymethylpyridinium hexafluorosilicate monohydrate (I) and 4-hydroxymethylpyridinium hexafluorosilicate (II), which we synthesized ...
Bis(2‐, 3‐, 4‐carboxyethylpyridinium) hexafluorosilicates as potential caries prophylactic agents

Gelmboldt, V. O.; Lytvynchuk, I. V.; Shyshkin, I. O.; Khromagina, L. N.; Fonari, M. S.; Kravtsov, V. Ch. (2022)

Interaction of 2‐, 3‐, 4‐carboxyethylpyridines (L1, L2, L3) with fluorosilicic acid results in the corresponding bis(pyridinium) hexafluorosilicates I–III, characterized by elemental analysis, IR, 1H, 19F nuclear magnetic ...
Caries-preventive and periodontal protective properties of gels containing hexafluosilicates of pyridinecarboxylic acids

Анисимов, В. Ю.; Шишкин, И. О.; Гельмбольдт, В. О.; Левицкий, А. П.; Anisimov, V. Yu.; Shyshkin, I. O.; Gelmboldt, V. O.; Levitsky, A. P. (2017)

Cariespro-preventive and periodontal protective action of hexaﬂuosilicates (HPS) of 2-, 3-, 4-carboxypyridinium in the composition of phytogels based on Na-salt of carboxymethylcellulose with ﬂuorine content in each gel ...
Caries-preventive efficacy and safety of different doses of cetylpyridinium hexafluorosilicate

Анисимов, В. Ю.; Левицкий, А. П.; Гельмбольдт, В. О.; Anisimov, V. Yu.; Levitsky, A. P.; Gelmboldt, V. O. (ОНМедУ, 2016)

In our previous work, it was shown that the newly synthesized "onium" hexafluorosilicate has caries preventive effect significantly higher than a similar action of sodium fluoride. This study determined caries-preventive ...
Chemisorption of sulfur dioxide by aqueous solutions of ethanolamines under static conditions

Хома, Р. Е.; Длубовский, Р. М.; Гельмбольдт, В. О.; Khoma, R. E.; Dlubovskyi, R. M.; Gelmboldt, V. O. (2016)

Chemisorption of sulfur dioxide by water and aqueous solutions of ethanolamines has been studied under static conditions. The solubility of SO2 in these media depends on its partial pressure and рН as well as basicity and ...
Complexing of Sulfur(IV) Oxide with Hexamethylenetetramine and Hexamethylenediamine in Aqueous Solutions

Khoma, R. E.; Shestaka, A. A.; Gavrilenko, M. I.; Sokhranenko, G. P.; Gel’mbol’dt, V. O. (2011)

Interaction in the sulfur(IV) oxide–hexamethylenetetramine (hexamethylenediamine)–water systems was studied by pH-, redox-, and conductometric titration techniques. The structure and stability of the resulting molecular ...
Condensation reactions in the systems “SO2 – L – CH2O – H2O” (L – primary amines)

Khoma, R. E.; Ennan, A. A.; Gelmboldt, V. O.; Koroeva, L. V. (2012)

We have previously shown that the interaction of sulfur (IV) oxide with hexamethylentetramine (HMTA) in aqueous solution results in the aminometansulfonic acid (AMSA):formulaAn attempt has been made to synthesize the AMSA ...
Crystal structures and solubility of 4,4´-bipyridinium and 2-brom-5-methylpyridinium hexafluorosilicates

Gelmboldt, V. O.; Koroeva, L. V.; Ganin, E. V.; Fonari, M. S. (2012)

Hexafluorosilicates with heterocyclic cations are convenient models for the estimation of H-bonds influence on structural characteristics and properties of this onium salts. As a part of our systematic investigation here ...
Development of methods for identification of cetylpyridinium hexafluorosilicate

Gelmboldt, V. О.; Аnisimov, V. Yu.; Bevz, N. Yu.; Georgiyants, V. А. (2016)

The methods for identification of Cetylpyridinium hexafluorosilicate – a potential caries preventive and antibacterial agent have been developed. To identify Cetylpyridinium hexafluorosilicate according to the requirements ...
Development of the composition and technology of a caries preventive gel

Anisimov, V. Yu.; Gelmboldt, V. O.; Polovko, N. P.; Анісімов, В. Ю.; Гельмбольдт, В. О.; Половко, Н. П.; Анисимов, В. Ю.; Гельмбольдт, В. А.; Половко, Н. П. (2015)

Prevention of dental caries involves remineralization of the tooth surfaces with calcium and phosphorus medicines, but the use of ﬂuorine-containing remedies in the form of a cream, gel and varnish is more effective. The ...
Development of the quantitative determination method for a new caries-preventive compound

Anisimov, V. Yu.; Gelmboldt, V. O.; Bevz, N. Yu.; Georgiyants, V. A.; Анісімов, В. Ю.; Гельмбольдт, В. О.; Бевз, Н. Ю.; Георгіянц, В. A.; Анисимов, В. Ю.; Гельмбольдт, В. О.; Бевз, Н. Ю.; Георгиянц, В. А. (2016)

Fluorides are the most important treatment and preventive additive in the composition of any form; they prevent development of caries by increasing the resistance of enamel, as well as production of acids by bacteria of ...
Effect of Hydrogen Bonding on Properties of Hexafluorosilicates with Heterocyclic Cations

Gel’mbol’dt, V. O. (2014)

The known data regarding the effects of interionic hydrogen bonding on properties of onium hexafluorosilicates with heterocyclic cations are summarized. Thermal stability parameters and water solubilities for this type of ...

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