Výsledky vyhledávání - "M. V. Ovcharov"

Akademický článek

Bioequivalence study of ondansetron tablets by HPLC-MS

Autor: E. S. Stepanova, M. V. Ovcharov, S. S. Barsegyan, S. M. Nikonova, V. V. Shilov, V. V. Chistyakov

Publikováno v: Фармакокинетика и Фармакодинамика, Vol 0, Iss 1, Pp 21-26 (2014)

Within the cross, a single, open, randomized study with a week washout period, the two sequences has been studied bioequivalence of tablet forms two ondansetron 18 volunteers (8 mg dosage). Plasma samples were analyzed by a validated HPLC-MS, tropise

Externí odkaz: https://doaj.org/article/8ee76a3e67f24d62b61967a25b045941

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New Approaches to the Application of DART Mass Spectrometry Coupled with Planar Chromatography for the Analysis of Mixtures of Organic Compounds

Autor: S. S. Barsegyan, Larisa N. Kulikova, S. A. Kovaleva, M. V. Ovcharov, Roman S. Borisov

Publikováno v: Journal of Analytical Chemistry. 72:1446-1450

A desorption cell for TLC/DART mass spectrometry is developed. An analysis of mixtures of pharmaceutical substances has shown that the proposed approach can improve the sensitivity of the method and achieve the reproducibility of the recorded mass sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ed16f80a6a608f203ae4b9b33ec4711
https://doi.org/10.1134/s106193481714009x

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Osmium dimethyl sulfoxide complexes: Synthesis and properties of [H(dmso)2][OsIII(dmso)2Br4]

Autor: E. K. Kultyshkina, N. N. Efimov, Elena A. Ugolkova, Olga V. Rudnitskaya, M. V. Ovcharov, E. V. Dobrokhotova, Vadim V. Minin

Publikováno v: Russian Journal of Inorganic Chemistry. 59:678-682

The reaction of H2[OsBr6] with DMSO in ethanol solution resulted in DMSO complex [H(dmso-O)2][OsIII(dmso-S)2Br4] (1) described previously as an intermediate product in the reaction of K2[OsBr6] with DMSO and characterized by EAS and ESR spectra. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9fe6662ace2a7c89a30496e63b99c9b9
https://doi.org/10.1134/s0036023614070195

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Investigation of 1,1′-disubstituted 4,4′-bipyridinium salts by various mass spectrometry techniques

Autor: Roman S. Borisov, M. V. Ovcharov, M. I. Zakirov, Vladimir G. Zaikin

Publikováno v: Journal of Analytical Chemistry. 68:1183-1187

The mass spectrometric behavior of symmetrically disubstituted 4,4′-bipyridinium salts under electron ionization (EI), electrospray ionization (ESI), direct analysis in real time (DART) ionization, and matrix-assisted laser desorption-ionization (M

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac7286e2efd1edd7f433771ee9666c49
https://doi.org/10.1134/s1061934813140037

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Synthesis of 4-amino-substituted tetrahydropyrimido[4,5-d]azocines

Autor: Anna V. Listratova, Elena A. Sorokina, Tatiana N. Borisova, Sergey P. Gromov, Leonid G. Voskressensky, M. V. Ovcharov, Alexey V. Varlamov, Larisa N. Kulikova

Publikováno v: Chemistry of Heterocyclic Compounds. 49:1180-1187

A method for the preparation of 4-amino-substituted tetrahydropyrimido[4,5-d]azocines containing an aromatic pyrimidine fragment has been developed. It was established that tetrahydropyrido[4,3-d]pyri-midines are cleaved by the action of activated al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9586695a9975566250ac353afbfc5766
https://doi.org/10.1007/s10593-013-1361-7

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Preparation of Micronized Ibuprofen Substance and Assessment of Its Bioavailability

Autor: R. A. Abramovich, Yu. A. Obidchenko, A. Yu. Savochkina, A. S. Karamyan, Yu. Yu. Khomyakov, S. S. Barsegyan, N. S. Khuchua, V. V. Chistyakov, M. V. Ovcharov

Publikováno v: Pharmaceutical Chemistry Journal. 47:382-386

A Buchi B-290 mini spray dryer (Switzerland) designed to dry aqueous solutions or suspensions was used to prepare micronized ibuprofen substance, which differed from the starting substance in terms of decreased crystal size. The bioavailability of ib

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5876498d7f4dd393121081d3912371a8
https://doi.org/10.1007/s11094-013-0964-8

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Reactions of tetrahydropyrido[4,5-d][1,2,4]triazolo[1,5-a]-pyrimidin-4-ones with activated alkynes. Synthesis of [1,2,4]triazolo[1′,5′:1,2]pyrimido[4,5-d]azocines

Autor: M. V. Ovcharov, V. N. Khrustalev, Elena A. Sorokina, Alexey V. Varlamov, Tatiana N. Borisova, Leonid G. Voskressensky

Publikováno v: Russian Chemical Bulletin. 61:1603-1608

Triazolo[1′,5′:1,2]pyrimido[4,5-d]azocines were synthesized by the tandem expansion of the tetrahydropyridine ring in tetrahydropyridotriazolopyrimidines by the action of activated alkynes. Under these conditions, triazolopyridopyrimidines benzyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42a2394802cea9e3f67ff5c950f82619
https://doi.org/10.1007/s11172-012-0213-4

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Transformations of tetrahydropyrido[4′,3′:4,5]thieno[2,3-d]pyrimidin-4(3H)-ones in the presence of alkynes bearing electron-withdrawing substituents

Autor: T. N. Borisova, Anna V. Listratova, Leonid G. Voskressensky, Alexey V. Varlamov, V. N. Khrustalev, Larisa N. Kulikova, S. A. Kovaleva, M. V. Ovcharov

Publikováno v: Russian Chemical Bulletin. 61:370-379

Tetrahydropyrido[4′,3′:4,5]thieno[2,3-d]pyrimidines in the presence of activated alkynes were transformed into mixtures of pyrimido[5′,4′:4,5]thieno[3,2-d]azocines and spiro[pyridine-4,5′-thieno[2,3-d]pyrimidines].

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8673bf062f623be4bbbfc63f78854f02
https://doi.org/10.1007/s11172-012-0052-3

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2-Alkyl-4-oxohexahydropyrimido[4,5-d]- and -[5,4-d]azocines

Autor: M. V. Ovcharov, Larisa N. Kulikova, Roman S. Borisov, Anna V. Listratova, Alexey V. Varlamov, Tatiana N. Borisova, Leonid G. Voskressensky

Publikováno v: Chemistry of Heterocyclic Compounds. 47:222-228

It has been established that 2-R-4-oxotetrahydropyrido[4,3-d]pyrimidines, under the action of activated alkynes in methanol, form a mixture of 2-R-4-oxohexahydropyrimido[4,5-d]azocines and products of decomposition of the tetrahydropyridine ring, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e5ae27d5aec07ce7b219f30e8235c415
https://doi.org/10.1007/s10593-011-0744-x

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