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 1-10    11-15 
1.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and Antitubercular Evaluation on Novel 1-Ethyl-5-(hetero)aryl- 1,6-dihydropyrazine-2,3-dicarbonitriles and 3-Cyano-1-ethyl-5-(hetero) aryl-2(1H)-pyrazinones / M. A. Kravchenko, E. V. Verbitskiy, S. N. Skornyakov, P. A. Slepukhin, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Anti-Infective Agents. - 2016. - Vol. 14, № 2. - С. 139-144
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRAZINES -- ANTITUBERCULOSIS ACTIVITY -- 2(1H)-PYRAZINONE
Аннотация: A simple method based on hydrolysis of 2,3-dicyanopyrazinium salts has been used for the synthesis of the corresponding 5-(hetero)aryl-3-cyano-1-ethyl-2(1H)-pyrazinones. Also, the series of novel 1-ethyl-5-(hetero)aryl-1,6-dihydropyrazine-2,3-dicarbonitriles have been obtained through reduction of the same pyrazinium salts with triethylsilane. The obtained compounds proved to be active in micromolar concentrations in vitro against Mycobacterium tuberculosis H37Rv, Mycobacterium avium, Mycobacterium terrae, as well as against rifampicin and isoniazid-resistance strains of Mycobacterium tuberculosis. The data for acute in vivo toxicity in mice have been obtained for these compounds which appear to be promising antitubercular agents

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2.
Инвентарный номер: нет.
   
   A 10


   
    A facile, metal-free, oxidative coupling of new 6-(hetero)aryl-[1,2,5]oxadiazolo[3,4-b]pyrazines with pyrroles, indoles and carbazoles. / Yu. A. Kvashnin, N. A. Kazin, E. V. Verbitskiy, T. S. Svalova, A. V. Ivanova, A. Kozitsina, P. A. Slepukhin, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // ARKIVOC. - 2016. - Vol. V. - С. 279-300. - Bibliogr. : p. 297-300 (45 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRAZINES -- PYRROLES -- INDOLES

\\\\expert2\\NBO\\ARKIVOC\\2016, p.279-300.pdf
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3.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis, antimycobacterial and antifungal evaluation of some new 1-ethyl-5-(hetero)aryl-6-styryl-1,6-dihydropyrazine-2,3-dicarbonitriles [Electronic resource] / E. V. Verbitskiy, P. A. Slepukhin, M. A. Kravchenko, S. N. Skornyakov, N. P. Evstigneeva, N. V. Kungurov, N. V. Zil'berberg, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Bioorganic and Medicinal Chemistry Letters. - 2015. - Vol. 25, № 3. - С. 524-528. - Bibliogr. : p. 528 (16 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRAZINES -- ANTITUBERCULOSIS ACTIVITY -- PETASIS REACTION
Аннотация: The Petasis reaction of 6-hydroxy adducts of 1-alkyl-2,3-dicyano-5-arylpyrazinium salts with trans-styrylboronic acids proved to proceed smoothly at room temperature to give the corresponding 5-(hetero)aryl-6-styryl substituted 1,6-dihydropyrazine derivatives. Also it has been found that C(6) unsubstituted 1,6-dihydro- or 1,4,5,6-tetrahydropyrazine derivatives can be easy prepared in high yields from the corresponding pyrazinium salts by reduction with triethylsilane. All synthesized compounds were screened in vitro for their antifungal activities against seven pathogenic fungal strains and antimycobacterial activities against Mycobacterium tuberculosis H(37)Rv, avium, terrae and multi-drug-resistant strains isolated from tuberculosis patients in the Ural region (Russia)

\\\\expert2\\nbo\\Bioorganic and Medicinal Chemistry Letters\\2015, v. 25, p. 524.pdf
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4.
Инвентарный номер: нет.
   
   D 62


   
    Direct arylalkenylation of furazano[3,4-b]pyrazines via a new C-H functionalization protocol [Electronic resource] / N. A. Kazin, Yu. A. Kvashnin, R. A. Irgashev, W. Dehaen, G. L. Rusinov, V. N. Charushin // Tetrahedron Letters. - 2015. - Vol. 56, № 14. - С. 1865-1869. - Bibliogr. : p. 1869 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
NUCLEOPHILIC-SUBSTITUTION -- DERIVATIVES -- HYDROGEN
Аннотация: 6-Styryl-5-(het)arylfurazano[3,4-b]pyrazines have been obtained by novel C-H functionalization, which is a particular case of the nucleophilic substitution of hydrogen (S-N(H)). The process is initiated by the Michael addition of morpholine at the C=C double bond of beta-nitrostyrenes, and the subsequent addition of the generated carbanion to C-6 of 5-(het)arylfurazano[3,4-b]pyrazines, followed by elimination of nitrous acid and morpholine. It has been shown that in this case, only beta-nitrostyrenes bearing electron-rich substituents on the aromatic ring are involved in arylalkenylation of furazano[3,4-b]pyrazines

\\\\expert2\\nbo\\Tetrahedron Letters\\2015, v. 56, p. 1865.pdf
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5.
Инвентарный номер: нет.
   
   R 30


   
    Reactions of radicals generated from 1-ethyl-1,4-diazinium salts: addition to the C-C triple bond dimerization [Text] / G. L. Rusinov, E. V. Verbitskiy, P. A. Slepukhin, O. N. Zabelina, M. I. Kodess, M. A. Ezhikova, V. N. Charushin, O. N. Chupakhin // Heterocycles : an International Journal for Reviews and communications in Heterocyclic Chemistry. - 2011. - V. 78, № 9. - P2315-2324 : граф., табл. - Библиогр.: с. 2323-2324 (32 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Radical species generated from 5-aryl-substituted 1-ethyl-2,3-dicyano-1,4-diazinium salts by action of sodium iodide undergo dimerization into [2,2']bipyrazinyl derivatives, as evidenced by NMR and X-ray crystallography data. The pyraziny! radicals can also be involved into the addition reaction on the C-C tziple bond, thus demonstrating a new synthetic route to modify the structure of pyrazines. The structures of E- and Z-isomers of 1-(1',2'-dihydropyrazinyl-2')-2-iodoethenes have been proved by 1H and 13C NMR spectroscopy and X-ray analysis.

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6.
Инвентарный номер: нет.
   
   R 30


   
    Reactions of sigma(H)-adducts of 1-ethyl-1,4-diazinium salts with arylalkynes as a one-step approach to pyrrolo[1,2-a]pyrazine derivatives [Electronic resource] / E. V. Verbitskiy, P. A. Slepukhin, M. A. Ezhikova, M. I. Kodess, G. L. Rusinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2009. - Vol. 58, № 6. - P1291-1293
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The O- and C-adducts of 5-aryl and 5-hetaryl-2,3-dicyano-1-ethylpyrazinium salts are hidden sources of ylides, which can be used for the cyclization with arylacetylenes giving rise to pyrrolo[1,2-a]pyrazines

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2009, 58 (6), 1291-1293.pdf
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7.
Инвентарный номер: нет.
   
   R 30


   
    Reactions of radicals generated from 1-ethyl-1,4-diazinium salts: Addition to the C-C triple bond versus dimerization [Text] / G. L. Rusinov, E. V. Verbitskiy, P. A. Slepukhin, O. N. Zabelina, M. I. Kodess, M. A. Ezhikova, V. N. Charushin, O. N. Chupakhin // Heterocycles. - 2009. - Vol. 78, № 9. - P2315-2324
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Radical species generated from 5-aryl-substituted 1-ethyl-2,3-dicyano-1,4-diazinium salts by action of sodium iodide undergo dimerization into [2,2?]bipyrazinyl derivatives, as evidenced by NMR and X-ray crystallography data. The pyrazinyl radicals can also be involved into the addition reaction on the C-C triple bond, thus demonstrating a new synthetic route to modify the structure of pyrazines. The structures of E- and Z-isomers of 1-(1?,2?-dihydropyrazinyl-2?)-2-iodoethenes have been proved by 1H and 13C NMR spectroscopy and X-ray analysis

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8.
Инвентарный номер: нет.
   
   T 82


   
    Transformations of 8-substituted tetrazolo[1,5-a]pyrazines [Electronic resource] / P. A. Slepukhin, G. L. Rusinov, S. Dedeneva, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2007. - Vol. 56, № 2. - P345-350
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reactions of 8-chlorotetrazolo[1,5-a]pyrazine with N-, O-, and S-nucleophiles involve the ipso substitution of the chlorine atom. Heating of this compound with benzotriazole or phenyltetrazole results in elimination of the nitrogen molecule from one of the tetrazole rings to form new annelated azapentalenes

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2007, 56 (2), 345.pdf
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9.
Инвентарный номер: нет.
   
   П 71


   
    Превращения 8-замещенных тетразоло[1,5-a]пиразинов [] = Transformations of 8-substituted tetrazolo[1,5-a]pyrazines / П. А. Слепухин, Г. Л. Русинов, С. С. Деденева, В. Н. Чарушин // Изв. АН. Сер. Химическая. - 2007. - № 2. - С. 334-338 : рис., табл. - Библиогр. : с. 338 (12 назв.) . - ISSN 0002-3353
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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10.
Инвентарный номер: нет.
   
   Q 32


   
    Quaternization of pyrido[2,3-b]pyrazines: 1H and 13C NMR Study [Electronic resource] / O. N. Chupakhin, V. N. Charushin, A. I. Chernyshev, S. E. Esipov // Magnetic Resonance in Chemistry. - 1985. - Vol. 23, № 6. - С. 437-441. - Bibliogr. : p. 441 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
N-METHYLPYRIDO[2,3-B]PYRAZINIUM SALTS -- PYRIDO[2,3-b]PYRAZINES
Аннотация: The structure of N-methylpyrido[2,3-b]pyrazinium salts has been examined by 1H and 13C NMR. 6-Dimethylamino- and 6-morpholino-pyrido[2,3-b]pyrazines were shown to undergo quaternization by methyl iodide at N-4 of the pyrazine ring, whereas the pyridine ring N-5 was the N-alkylation site in the reaction of unsubstituted pyrido[2,3-b]pyrazine with methyl iodide under the same conditions. The effects of quaternization on the 1H and 13C chemical shifts and the nJ(CH) values are discussed.

\\\\expert2\\nbo\\Magnetic Resonance in Chemistry\\1985, v.23, N 6, p.437.pdf
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