S 98 Synthesis of fluorinated furo- and pyrrolo[3,4-b]quinoxaline 4,9-dioxides [Electronic resource] / S. K. Kotovskaya, N. M. Perova, V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 1999. - Vol. 9, N 2. - P76-77 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\expert2\\nbo\\Mendeleev Communications\\1999, v.9, N 2. p.76.pdf |
O-57 One-step route to fluorinated furo[2,3-b]quinoxalines [Electronic resource] / V. N. Charushin, G. A. Mokrushina, G. M. Petrova, G. G. Alexandrov, O. N. Chupakhin, // Mendeleev Communications. - 1998. - Vol. 8, N 4. - P133-134 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The reaction of 6,7-difluoro-1-ethylquinoxalinium salts with 2,4-pentandione, ethyl and bornyl acetoacetates and other beta-ceto esters results in the formation of 6,7-difluoro-3a,4,9,9a-tetrahydrofuro[2,3-b]quinoxalines \\\\expert2\\nbo\\Mendeleev Communications\\1998, v.8, N 4. p.133.pdf |
R 30 Reactions of N-aminoquinolones with ketones - a new approach to the synthesis of tricyclic 6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxilic acids [Electronic resource] / O. N. Chupakhin, Y. A. Azev, S. G. Alexeev, S. V. Shorshnev, E. Tsoi, V. N. Charushin // Mendeleev Communications. - 1992. - Vol. 2, N 4. - P151-153 . - ISSN 0959-9436 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Reactions of 7-(X)-substituted ethyl 1-amino-4-oxo-1,4-dihydroquinoline-3-carboxilates (1a-c; X=F, Cl and 4-methylpiperazin-1-yl) with mono- and di-ketones have been studied. Treatment of 1a; X=F with cyclohexanone and cyclopentanone in acetic acid resulted in the corresponding azomethynes \\\\expert2\\nbo\\Mendeleev Communications\\1992, v.2, N 4. p.151.pdf |
О-42 1-Alkyl-1,2,4-triazinium ylides as 1,3-dipoles in a cycloaddition reaction with diethyl acetylenedicarboxylate [Electronic resource] / O. N. Chupakhin, B. V. Rudakov, S. G. Alexeev, S. V. Shorshnev, V. N. Charushin // Mendeleev Communications. - 1992. - N 3. - P85-86 . - ISSN 0959-9436 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 1-АЛКИЛ-1.2.4-ТРИАЗИНИЛИДЫ -- ИЛИДЫ -- ДИПОЛИ -- 1.3-ДИПОЛИ -- ЦИКЛОПРИСОЕДИНЕНИЕ -- ДИЭТИЛАЦЕТИЛЕНДИКАРБОКСИЛАТ -- ДЕПРОТОНАЦИЯ -- 1-АЛКИЛ-5-ФЕНИЛ-1.2.4-ТРИАЗИНА СОЛИ -- триэтиламины -- АЗОМЕТИНИЛИДЫ -- ЦИКЛОПРИСОЕДИНЕНИЕ ДИПОЛЯРНОЕ -- ДИПОЛЯРНОЕ ЦИКЛОПРИСОЕДИНЕНИЕ -- ПИРРОЛО[2.1-F]1.2.4-ТРИАЗИНЫ -- СОЛИ -- ОРГАНИЧЕСКАЯ ХИМИЯ -- ХИМИЯ ОРГАНИЧЕСКАЯ Аннотация: Deprotonation of 1-alkyl-5-phenyl-1,2,4-triazinium salts by triathylamine results in the formation of azomethyne ylides which undergo a 1,3-dipolar cycloaddition reaction with diethyl acetylenedicarboxylate to yield pyrrolo[2,1-f]1,2,4-triazines \\\\expert2\\nbo\\Mendeleev Communications\\1992, v.2, N 3. p.85-86.pdf |
U 62 Unusual dimerization of 1-ethyl-1,2,4-triazinium salts into 4a,4b,9,10-tetrahydro-1,3,6,8,8a,10a-hexaazaphenanthrenes [Electronic resource] / O. N. Chupakhin, B. V. Rudakov, S. G. Alexeev, V. N. Charushin, V. A. Chertkov // Tetrahedron Letters. - 1990. - Vol. 31, N 52. - P7665-7668. - Bibliogr. : p. 7668 (14 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 1-Ethyl-3-alkylthio-5-phenyl-1,2,4-triazinium tetrafluoroborates were found to undergo an unusual dimerization on treatment with triethylamine in methanol or ethanol solution. A mechanism for the formation of 4a,4b,9,10-tetrahydro-1,3,5,8,8a,10a-hexaaza-phenanthrenes is proposed \\\\expert2\\nbo\\Tetrahedron Letters\\1990, v 31, p.7665.pdf |
N 89 Novel 1-trifluoromethyl substituted 1,2-ethylenediamines and their use for the synthesis of fluoroquinolones [Text] / A. Y. Aizikovich, M. V. Nikonov, M. I. Kodess, V. Yu. Korotaev, V. N. Charushin, O. N. Chupakhin // Tetrahedron. - 2000. - Vol. 56, N 13. - P1923-1927 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A common approach to the synthesis of 1-trifluoromethyl-1,2-ethylenediamines was deweloped. Based on these original building blocks the new derivatives of N-substituted fluoroquinolones bearing the trifluoromethyl group were obtined \\\\expert2\\nbo\\Tetrahedron\\2000, v.56, p. 1923-1927, . Aizikovich.pdf |
H 99 Ipso-Substitution of an acyl group in reactions of 3-acyl-substituted ethyl 7,8-difluoro-5-oxoelectrophilic reagents [Electronic resource] / Y. A. Azev, S. V. Shorshnev, S. G. Alexeev, V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 1993. - N 3. - P99-100 . - ISSN 0959-9436 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\expert2\\nbo\\Mendeleev Communications\\1993, v.3, N 3. p.99.pdf |
T 44 The synthesis of fluorinated 4H-1,4-benzothiazine-2-carboxylic acid 1,1-dioxides - thionated analogues of perfloxacin [Electronic resource] / V. I. Vysokov, V. N. Charushin, G. B. Afanasyeva, O. N. Chupakhin // Mendeleev Communications. - 1993. - Vol. 3, N 4. - P159-160 . - ISSN 0959-9436 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\expert2\\nbo\\Mendeleev Communications\\1993, v.3, N 4. p.159.pdf |
Q 32 Quaternary Salts of Fluorinated Quinoxalines: Synthesis and Cyclizations with 1,3-dinucleophiles [Text] : доклад, тезисы доклада / G. A. Mokrushina, G. M. Petrova, O. M. Chasovskikh, V. N. Charushin, O. N. Chupakhin // International Memorial I.Postovsky Conference on Organic Chemisty, Ekaterinburg, March 17-20, 1998 : program and abstracts. - Ekaterinburg, 1998. - P97 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
R 31 Recent advances in the chemistry of as-triazinium salts [Text] / O. N. Chupakhin, S. G. Alexeev, B. V. Rudakov, V. N. Charushin // Heterocycles. - 1992. - Vol. 33, N 2. - P931-972 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\expert2\\nbo\\Heterocycles\\1992. V. 33, N 2. P. 931-972.pdf |
K 46 Kinetic resolution of (+/-)-2,3-dihydro-3-methyl-4H-1,4-benzoxazines with (S)-naproxen [Text] / V. N. Charushin, V. P. Krasnov, G. L. Levit, M. A. Koroleva, M. I. Kodess, O. N. Chupakhin, M. N. Kim, H. S. Lee, Y. J. Park, K. -C. Kim // Tetrahedron: Asymmetry . - 1999. - Vol. 10, N 14. - P2691-2702 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\expert2\\nbo\\Tetrahedron Asymmetry\\1999. v. 10. p.2691.pdf |
A 53 An unusual aromatisation of dihydropyrimidines facilitated by reduction of the nitro group [Electronic resource] / G. L. Rusinov, E. B. Gorbunov, V. N. Charushin, O. N. Chupakhin // Tetrahedron Letters. - 2007. - Vol. 48, № 33. - P5873-5876 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: An unusual aromatisation of the dihydropyrimidine fragment in 6-nitro-7-substituted-4,7-dihydro-1,2,4-triazolo[1,5-a]pyrimidines has first been found to occur in parallel with reduction of the nitro group using a number of reducing agents. \\\\Expert2\\nbo\\Tetrahedron Letters\\2007, v. 48, p.5873.pdf |
O-57 One-Step Heterylation at the Upper Rim of Calix[4]arene with 1,2,4-Triazin-5(2H)-ones [Electronic resource] / D. G. Beresnev, N. A. Itsikson, O. N. Chupakhin, V. N. Charushin, M. I. Kodess, A. I. Butakov, G. L. Rusinov, Yu. Yu. Morzherin, A. I. Konovalov, I. S. Antipin // Journal of Organic Chemistry. - 2006. - Vol. 71, № 21. - P8272-8275 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A convenient way to modify calix[4]arenes based on the direct C-C coupling reaction of their phenol moiety with 1,2,4-triazines has been advanced, and the ability of modified calixarenes to provide transport of La3+ and Ga3+ cations through organic membranes has been examined. ?? \\\\Expert2\\nbo\\Journal of Organic Chemistry\\2006, v.71, N 21, p.8272.pdf |
C 51 Chemistry of O- and C-adducts derived from 1,4-diazinium salts: the use of tetrahydropyrazines in the synthesis of condensed systems [Electronic resource] / G. L. Rusinov, P. A. Slepukhin, V. N. Charushin, O. A. Dyachenko, O. N. Kazheva, A. N. Chekhlov, E. V. Verbitskiy, M. I. Kodess, O. N. Chupakhin // Mendeleev Communications. - 2006. - Vol. 16, № 1. - P26-29 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 1-Ethyl-2,3-dicyano-5-nitromethyl-6-methoxy-1,4,5,6-tetrahydropyrazine reacts with N-methylquinoxalinium iodide in the presence of triethylamine to form octahydro-2,4a,5,10-tetraazabenzo[b]fluorene-3,4-dicarbonitrile, while our attempts to obtain similar polycyclic products from stereoisomeric 5-(S)- and 5-(R)-(1`-nitroprop-1`-yl)-6-methoxy-1,4,5,6-tetrahydropyrazines derived from the reaction of 1-nitropropane with 2,3-dicyano-5,6-dimethoxy-1-ethyl-1,4,5,6-tetrahydropyrazine. \\\\Expert2\\nbo\\Mendeleev Communications\\2006, v.1, p.26.pdf |
M 39 Matern, A. I. Progress in the studies of oxidation of dihydropyridines and their analogues [Electronic resource] / A. I. Matern, V. N. Charushin, O. N. Chupakhin // Russian Chemical Reviews. - 2007. - Vol. 76, № 1. - P23-40 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Published data on oxidation of dihydropyridines and on the mechanisms and the role of hydride shifts in bioorganic chemistry, enantioselective synthesis and supramolecular chemistry are generalised. \\\\Expert2\\nbo\\Russian Chemical Reviews\\2007, V.76, N1, p.23.pdf |
U 92 Utepova, I. A. Azinylferrocenes: synthesis and properties [Text] / I. A. Utepova, O. N. Chupakhin, V. N. Charushin // Heterocycles. - 2008. - Vol. 76, № 1. - P39-72 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
C 47 Charushin, V. N. Nucleophilic aromatic substitution of hydrogen and related reactions [Electronic resource] / V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 2007. - Vol. 17, № 5. - P249-254 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The classical concept of nucleophilic aromatic substitution (SNAripso) has been complemented with a new synthetic methodology (SNH), enabling one to build new carbon–carbon C(sp2)–C(sp3), C(sp2)–C(sp2) and C(sp2)–C(sp) or carbon–heteroatom C(sp2)–X (X is O, N, P, S, halogen) bonds through nucleophilic displacement of hydrogen in an aromatic ring. \\\\Expert2\\nbo\\Mendeleev Communications\\2007, v.17, p.249.pdf |
S 98 Synthesis and antiviral activity of fluorinated 3-phenyl-1,2,4-benzotriazines [Electronic resource] / S. K. Kotovskaya, G. A. Zhumabaeva, N. M. Perova, Z. M. Baskakova, V. N. Charushin, O. N. Chupakhin, E. F. Belanov, N. I. Bormotov, S. M. Balakhnin, O. A. Serova // Pharmaceutical Chemistry Journal. - 2007. - Vol. 41, № 2. - P62-68. - Библиогр. : с. 68 (18 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: New synthetic approaches to fluorinated 3-phenyl-1,2,4-benzotriazines for biological testing have been elaborated. 1-(3,4-Difluorophenyl)-3,5-diphenylformazan (IVa) was synthesized via dinitriding of 3,4-difluoroaniline, followed by azo-addition of the resulting azobenzenediazonium chloride with acetaldehyde phenylhydrazone. 6,7-Difluoro-3-phenyl-1,2,4-benzotriazine (Va) was obtained via intramolecular cyclization of formazan IVa in the presence of BF3/AcOH complex. Monofluoro-substituted 6-R-7-fluoro-3-phenyl-1,2,4-benzotriazine derivatives (Vb-Vq) were prepared by substituting fluorine atom with alkoxides in 3,4-difluoronitrobenzene. Conditions for nucleophilic substitution of the second fluorine atom in benzotriazines V have been established. Fluorinated 3-phenyl-1,2,4-benzotriazines have been tested for antiviral and cytotoxic activity on Vero cell cultures and proved to be active against severe diseases caused by smallpox and some other pathogenic viruses. ?? \\\\Expert2\\nbo\\Pharmaceutical Chemistry Journal\\2007, 41 (2), 62.pdf |
R 48 Reversible dimerization of 9-cyano-10-methylacridinyl radical [Electronic resource] / A. I. Matern, V. V. Yanilkin, V. N. Nastapova, V. I. Morosov, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2006. - Vol. 55, № 8. - P1498-1499. - Библиогр. : с. 1499 (10 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The electrochemical reduction of the 9-cyano-10-methylacridinium cation in acetonitrile yielded the corresponding radical, which was rather stable at 20 °C and gave a resolved ESR spectrum. This radical reversibly dimerized in the temperature range from 20 to ?30 °C. \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2006, 55 (8), 1498.pdf |
S 98 Synthesis and antiviral activity of fluorinated pyrido[1,2-a]benzimidazoles [Electronic resource] / S. K. Kotovskaya, Z. M. Baskakova, V. N. Charushin, O. N. Chupakhin, E. F. Belanov, N. I. Bormotov, S. M. Balakhnin, O. A. Serova // Pharmaceutical Chemistry Journal. - 2005. - Vol. 39, № 11. - P574-578. - Библиогр. : с. 578 (16 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SYNTHESIS -- ANTIVIRAL ACTIVITY Аннотация: Methods for the synthesis of fluorinated pyrido[1,2-a]benzimidazoles have been developed, and a series of such compounds has been obtained and studied for biological activity. In particular, 5,6-difluoro-2-cyanobenzimidazole (II) was synthesized for the first time using the reaction of 1,2-diamino-4,5-difluorobenzole (I) with cyanoacetic ether. Pyrido[1,2-a]benzimidazoles (III, IV) were obtained via condensation of benzimidazole II with diethylethoxymethylene malonate and ethyl acetoacetate. The synthesized pyrido[1,2-a]benzimidazoles (III–XIII) were subjected to screening on a culture of Vero cells for antiviral activity and cytotoxicity with respect to ortho-poxviruses that are pathogenic for humans. ?? \\\\Expert2\\nbo\\Pharmaceutical Chemistry Journal\\2005, 39 (11),574.pdf |