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 Найдено в других БД:Публикации Чарушина В.Н. (29)
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полныйинформационныйкраткий
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Поисковый запрос: (<.>K=QUINOXALINE<.>)
Общее количество найденных документов : 26
Показаны документы с 1 по 10
 1-10    11-20   21-26 
1.
Инвентарный номер: нет.
   

   
    New approach to biologically active indolo[2,3-b]quinoxaline derivatives through intramolecular oxidative cyclodehydrogenation / G. Sadykhov, D. V. Belyaev, M. G. Pervova [et al.] // ChemistrySelect. - 2022. - Vol. 7, № 18. - Pe202200497
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient synthetic protocol to antiviral agent B-220 and a series of similar indolo[2,3-b]quinoxaline derivatives has been developed. This synthetic approach is based on Buchwald-Hartwig cross-coupling and subsequent annulation by intramolecular oxidative cyclodehydrogenation. For the first time, 6H-indolo[2,3-b]quinoxaline amine derivatives were evaluated for antimycobacterial activity. The moderate bacteriostatic effect against Mycobacterium tuberculosis H37Rv was found. A plausible mechanism of antibacterial action was elucidated by the molecular docking.

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2.
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    Push–pull derivatives based on 2,4'-biphenylene linker with quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine electron withdrawing parts / E. V. Verbitskiy, Y. A. Kvashnin, G. L. Rusinov [et al.] // Molecules. - 2022. - Vol. 27, № 13. - Ст. 4250
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of novel V-shaped quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine push–pull derivatives with 2,4′-biphenylene linker were designed and their electrochemical, photophysical and nonlinear optical properties were investigated. [1,2,5]Oxadiazolo[3,4-b]pyrazine is the stronger electron-withdrawing fragment as shown by electrochemical, and photophysical data. All compounds are emissive in a solid-state (from the cyan to red region of the spectrum) and quinoxaline derivatives are emissions in DCM solution. It has been found that quinoxaline derivatives demonstrate important solvatochromism and extra-large Stokes shifts, characteristic of twisted intramolecular charge transfer excited state as well as aggregation induced emission. The experimental conclusions have been justified by theoretical (TD-)DFT calculations.

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3.
Инвентарный номер: нет.
   

    Mochulskaya, N. N.
    Antiviral agents – benzazine derivatives / N. N. Mochulskaya, E. V. Nosova, V. N. Charushin // Chemistry of heterocyclic compounds. - 2021. - Vol. 57. - P374–382
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BENZAZINES -- QUINAZOLINE -- QUINOLINE -- QUINOXALINE
Аннотация: The review outlines the results of studies of the antiviral activity of quinoline, quinoxaline, and quinazoline derivatives published over the past 5 years. The supplied data indicate the enormous potential of benzazines for the design of effective antiviral drugs.

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4.
Инвентарный номер: нет.
   

   
    Synthesis, characterization, and in vitro assessment of cytotoxicity for novel azaheterocyclic nido-carboranes – Candidates in agents for boron neutron capture therapy (BNCT) of cancer / M. V. Varaksin, L. A. Smyshliaeva, V. L. Rusinov [et al.] // Tetrahedron. - 2021. - Vol. 102. - P132525
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AZAHETEROCYCLES -- BNCT -- CYTOTOXICITY -- CARBORANES
Аннотация: A series of novel water-soluble azaheterocyclic derivatives of nido-carborane bearing quinoxaline, 2H-imidazole or 1,2,4-triazine moieties were first synthesized in 82–91% yields. The structures of these boron-enriched compounds were confirmed by the data of NMR, IR spectroscopy, and mass spectrometry. To access the toxicity level for these organoboron compounds, the cytotoxicity indexes (IC50) were determined using by the MTT test on both human glioblastoma cell A-172 (IC50 = 150–243 μM) and human embryonic lung cells (IC50 = 424–944 μM) lines. The obtained preliminary results from in vitro analysis enable the synthesized water-soluble azaheterocyclic carboranes to be considered as challenging candidates in the design of agents for boron-neutron capture therapy (BNCT) of malignant tumors.

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5.
Инвентарный номер: нет.
   

   
    One-pot two-step synthesis of 4H-thieno[2',3':4,5]pyrrolo[2,3-b]quinoxaline derivatives / G. Sadykhov, E. V. Verbitskiy, G. L. Rusinov [et al.] // Современные синтетические методологии для создания лекарственных препаратов и функциональных материалов" (MOSM 2021): V международная конференция: сборник тезисов. - Екатеринбург, 2021. - С. PR-95
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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6.
Инвентарный номер: нет.
   

   
    Synthesis, crystal structures and properties of carbazolebased [6]helicenes fused with an azine ring / D. I. Tonkoglazova, A. V. Gulevskaya, O. I. Askalepova, K. A. Chistyakov // Beilstein journal of organic chemistry. - 2021. - Vol. 17. - P11-21
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AZINE-FUSED HELICENES -- CARBAZOLE-BASED [6]HELICENES -- HELICAL STRUCTURES
Аннотация: Novel carbazole-based [6]helicenes fused with an azine ring (pyridine, pyrazine or quinoxaline) have been prepared through a five-step synthetic sequence in good overall yields. Commercially available 2,3-dihaloazines were used as starting materials. To discern the effect of merging an azine moiety within a helical skeleton, the X-ray structures, UV–vis absorption and fluorescence spectra of the helicenes were investigated and compared to that of the parent carbazole-based [6]helicene (7H-phenanthro[3,4-c]carbazole).

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7.
Инвентарный номер: нет.
   

   
    Synthesis and characterization of linear 1,4-diazine-triphenylamine–based selective chemosensors for recognition of nitroaromatic compounds and aliphatic amines / E. V. Verbitskiy, Y. A. Kvashnin, E. F. Zhilina [et al.] // Dyes and pigments. - 2020. - Vol. 178. - P108344
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ALIPHATIC AMINES -- FLUORESCENCE QUENCHING -- NITROAROMATIC COMPOUNDS -- PYRAZINE -- QUINOXALINE -- SOLVATOCHROMISM
Аннотация: Novel 1,4-diazine-based dyes of the D–π–A type, possessing triphenylamine as an electron-donating group, have been developed. Fluorescence studies have demonstrated that emission of these fluorophores is sensitive towards different nitroaromatic compounds and aliphatic amines, both in solutions and in a vapor phase. Moreover, these compounds can be considered as “naked-eye” fluorescent probes for solution polarity because they possess pronounced solvatochromic properties. Therefore, these compounds have to be regarded as potential multifunctional chemosensors for monitoring hazardous organic substances.

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8.
Инвентарный номер: нет.
   

   
    Synthesis and photophysical studies of novel v-shaped 2,3-bis{5-aryl-2-thienyl}(dibenzo[f,h])quinoxalines / T. N. Moshkina, E. V. Nosova, A. E. Kopotilova [et al.] // Asian journal of organic chemistry. - 2020. - Vol. 9, № 4. - P673-681
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CROSS-COUPLING -- DIBENZO[F,H]QUINOXALINE -- DONOR-ACCEPTOR-DONOR CHROMOPHORES -- FLUORESCENCE -- SENSORS
Аннотация: A series of novel V-shaped luminophores containing electron-withdrawing dibenzo[f,h]quinoxaline core and arylthienyl donor fragments at positions 2 and 3 has been synthesized. The absorption spectra (UV/vis) were recorded in several solvents, whereas emission spectra were recorded in solutions and powders. The solvatochromism as well as halochromism of obtained compounds was also explored. Electronic-structure calculations using quantum-chemistry methods were performed to further analyse experimental results. All characteristics were compared with that of 2,3-bis(arylthienyl)quinoxaline counterparts. The halochromic effect studies showed that upon gradual addition of trifluoroacetic acid (TFA) to the toluene solution of diethylaminophenyl-substituted dibenzo[f,h]quinoxaline chromophore, absorption and emission changed. Observed band shifts were more distinct in the case of mentioned quinoxaline than for other derivatives. All of the (dibenzo[f,h])quinoxaline chromophores exhibited good sensitivity toward nitro-containing explosives with high Stern-Volmer constants up to 57800 M−1, these results are remarkable for such heterocyclic systems.

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9.
Инвентарный номер: нет.
   
   D 62

   
    Direct nuclophilic C-H functionalization of azines and their N-oxides by lithium derivatives of aldonitrones [Electronic resource] / M. V. Varaksin, I. A. Utepova, O. N. Chupakhin, V. N. Charushin // Tetrahedron. - 2015. - Vol. 71, №38. - С. 7077-7082. - Bibliogr. : p. 7082 (23 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DIPOLE-STABILIZED CARBANIONS -- ORGANIC-SYNTHESIS -- CHEMICAL-PROPERTIES;
Аннотация: Novel ligands of the azine family for complexing with metals have been obtained as a result of the uncatalyzed C-C coupling reactions of quinoline, quinoxaline, 1,10-phenantroline, and their N-oxides with (1-oxido-3-phenyl-1,4-diazaspiro[4.5]deca-1,3-dien-2-yl)lithium

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10.
Инвентарный номер: нет.
   
   R 35

   
    Regioselective C2-and C8-Acylation of 5,11-Dihydroindolo[3,2-b]carbazoles and the Synthesis of Their 2,8-Bis(quinoxalinyl) Derivatives [Electronic resource] / R. A. Irgashev, N. A. Kazin, G. A. Kim, G. L. Rusinov, V. N. Charushin // Synthesis-Stuttgart. - 2015. - Vol. 47, № 22. - С. 3561-3572. - Bibliogr. : p. 3572 (11 ref)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
5,11-DIHYDROINDOLO[3,2-B]CARBAZOLES -- 2-ARYLGLY-OXALS -- ACYLATION
Аннотация: An efficient approach for the double acetylation of 5,11-dihexyl- 6,12-di(hetero) aryl-substituted 5,11-dihydroindolo[3,2-b] carbazoles with acetic anhydride in the presence of boron trifluoride etherate has been developed, thus affording the corresponding 2,8-diacetyl derivatives in good yields. A similar acylation has been shown to occur by the reaction of anhydrides of other carboxylic acids. Oxidation of the obtained 2,8-diacetyl derivatives with selenium dioxide takes place on heating or under microwave irradiation, thus resulting in the formation of the corresponding 2,8-diglyoxals. The latter proved to react with aromatic o-diamines to afford new indolo[3,2-b] carbazoles bearing quinoxalinyl fragments at C-2 and C-8. Major optical properties of quinoxaline- containing indolo[3,2-b] carbazoles have been measured.

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