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Общее количество найденных документов : 39
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 1-10    11-20   21-30   31-39 
1.

Вид документа : Статья из журнала
Шифр издания : 54
Автор(ы) : Deev S. L., Yasko M. V., Karpenko I. L., Ulomskii E. N., Chupakhin O. N.
Заглавие : 1,2,4-Triazoloazine derivatives as a new type of herpes simplex virus inhibitors
Место публикации : Bioorganic Chemistry . - 2010. - Vol. 38, № 6. - С. 265-270
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A new class of inhibitors of herpes simplex virus replication was found. The compounds under study are derived from condensed 1,2,4-triazolo[5,1-c][1,2,4]triazines and 1,2,4-triazolo[1,5-a]pyrimidines, structural analogues of natural nucleic bases. Antiherpetic activity and cytotoxicity of the compounds were studied. The corresponding triphosphates of several active compounds were prepared and tested as inhibitors of DNA synthesis catalyzed by herpes simplex virus polymerase. The potential mechanism of their action is blocking of DNA dependent DNA polymerase, a key enzyme of viral replication
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Smyshliaeva L. A., Varaksin M. V., Fomina E. I., Medvedeva M. V., Svalova T. S., Kozitsina A. N., Charushin V. N., Chupakhin O. N., Demidov O. P., Borovlev I. V., Mensch C., Mampuys P., Maes B. U. W.
Заглавие : 1,3,7-triazapyrene-based ortho-carborane fluorophores: convenient synthesis, theoretical studies, and aggregation-induced emission properties
Место публикации : Organometallics. - 2021. - Vol. 40, № 16. - С. 2792-2807
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient transition-metal-free approach, based on nucleophilic substitution of hydrogen (SNH), for consecutive regioselective C–H functionalization of 1,3,7-triazapyrene scaffolds with carboranyllithium and phenyllithium is reported. The theoretical calculations disclosed highlight key features in the regioselectivity and mechanism of the investigated SNH transformations. The novel 1,3,7-triazapyrene-based ortho-carboranes obtained have large potential in the field of molecular electronics as organic luminophores, which are characterized by the aggregation-induced emission and dual-emission effects.
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3.

Вид документа : Статья из журнала
Шифр издания : 54
Автор(ы) : Shchegol'kov E. V., Burgart Ya. V., Khudina O. G., Saloutin V. I., Chupakhin O. N.
Заглавие : 2-(Het)arylhydrazono-1,3-dicarbonyl compounds in organic synthesis
Место публикации : Russian Chemical Reviews. - 2010. - Vol. 79, № 1. - С. 31-62: рис.
Примечания : 20.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The data on the synthesis, structure and chemical transformations of 2-(het)arylhydrazono-1,3-dicarbonyl compounds is surveyed. The synthetic potential and possible applications of the title compounds are analyzed
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4.

Вид документа : Статья из журнала
Шифр издания : 54/A 10
Автор(ы) : Verbitskiy E. V., Rusinov G. L., Chupakhin O. N., Charushin V. N.
Заглавие : A new route towards dithienoquinazoline and benzo[f]thieno[3,2-h]quinazoline systems using Pd-catalyzed intramolecular cyclization under microwave irradiation [Электронный ресурс]
Место публикации : ARKIVOC. - 2016. - № 4. - С. 204-216
Систем. требования: http://apps.webofknowledge.com/full
Примечания : 1.11.16
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrimidines --intramolecular cyclizations --fused ring systems--thienoacenes
Аннотация: A novel synthetic route to novel thienoacene systems bearing a fused pyrimidine ring is proposed. The commercially available 5-bromopyrimidine is used as the starting material to obtain various dithienoquinazoline and benzo[f]thieno[3,2-h] quinazoline systems through the Suzuki cross-coupling, nucleophilic aromatic substitution of hydrogen (the S-N(H) reaction), and finally palladium-catalyzed intramolecular cyclization under microwave irradiation. Redox properties of some of the new compounds have been investigated. The data obtained show that these systems have plausible potential for use in organic electronic applications.
\\\\expert2\\NBO\\ARKIVOC\\2016, p.204-216.pdf
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mochulskaya N. N., Nosova E. V., Charushin V. N.
Заглавие : Antiviral agents – benzazine derivatives
Место публикации : Chemistry of heterocyclic compounds. - 2021. - Vol. 57. - С. 374–382
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 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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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volobueva A. S., Zarubaev V. V., Fedorchenko T. G., Lipunova G. N., Tungusov V. N., Chupakhin O. N.
Заглавие : Antiviral properties of verdazyls and leucoverdazyls and their activity against group b enteroviruses
Место публикации : Russian journal of infection and immunity. - 2023. - Vol. 13, № 1. - С. 107-118
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
ЗДРАВООХРАНЕНИЕ. МЕДИЦИНСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): enteroviruses--enteroviral infection--coxsackievirus
Аннотация: Enteroviruses are non-enveloped viruses of Enterovirus genus, Picornaviridae family, causing a variety of human diseases: from acute respiratory and intestinal infections to more severe pathologies including poliomyelitis, encephalitis, myocarditis, pancreatitis. Currently, no approved direct-acting antiviral drugs for treatment of enterovirus infections exists, whereas vaccination is available only for prevention of poliomyelitis and enterovirus 71 infection. Therefore, it is promising to conduct a search for inhibitors of enteroviruses life cycle in drug development to treat enterovirus infections. Here, antiviral properties of stable free radicals, verdazyls, and their precursors, leucoverdazyls, were investigated. It has been shown that leucoverdazyls vs verdazyls increased the survival of permissive cell culture infected with coxsackievirus. The activity range of the lead leucoverdazyl against RNA-containing and DNA-containing human viruses (in the viral yield reduction assay) and its proposed mechanism of action (time of addition assay) was studied. The lead compound suppressed reproduction of group B enteroviruses in vitro, with modest activity against influenza A virus and no activity against herpes virus type 1 and adenovirus type 5. The maximum decrease in viral titers was observed upon its addition to infected cells during early and middle stages of the virus life cycle. Thus, we concluded that the studied compound has a pronounced inhibitory activity against group B enteroviruses not belonging to the class of capsid binder inhibitors, without virucidal properties. Previously, we described antioxidant properties of leucoverdazyls. It is known that many viral infections are accompanied by production of reactive oxygen species and oxidative stress, and some compounds with antioxidant properties exhibit antiviral potential. Targeted chemical modifications of leucoverdazyls and further studies of leucoverdazyl mechanism of action as well as in vivo animal studies are needed. However, the results obtained may be useful for future development of new antiviral drugs to treat enteroviral infections.
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7.

Вид документа : Статья из журнала
Шифр издания : 54/C 57
Автор(ы) : Chupakhin O. N., Shchepochkin A. V., Charushin V. N.
Заглавие : Atom- and step-economical nucleophilic arylation of azaaromatics via electrochemical oxidative cross C–C coupling reactions
Место публикации : Green Chemistry. - 2017. - Vol. 19, № 13. - С. 2931-2935
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The synthesis of asymmetrical bi(het)aryls through direct functionalization of the C(sp2)–H bond in azaaromatics with fragments of (hetero)aromatic nucleophiles has first been carried out under electrochemical oxidative conditions. This versatile method for C–C bond formation between two aryl fragments can be realized under very mild potential-controlled oxidative conditions, and it does require neither incorporation of any halogen atoms or other leaving groups, nor the use of metal catalysts. The use of the electrochemical SHN methodology for modification of azaaromatic compounds has first been demonstrated.
\\\\Expert2\\NBO\\Green Chemistry\\2017 v.19 p.2931-2935.pdf
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nikonov I. L., Khalymbadzha I. A., Sadieva L. K., Savchuk M. I., Starnovskaya E. S., Kopchuk D. S., Kovalev I. S., Kim G. A., Chupakhin O. N.
Заглавие : Benzo[de]naphtho[1,8-gh]quinolines: synthesis, photophysical studies and nitro explosives detection
Место публикации : Chimica Techno Acta. - 2021. - Vol. 8, № 4. - Ст.20218415
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): benzo[de]naphtha [1,8-gh]quinolones--fluorescence--sensor--explosives
Аннотация: A rational synthetic approach to substituted naphtho[1,8-gh]quinolines based on intramolecular cyclization in the presence of potassium in the series of (naphthalen-1-yl)isoquinolines is described. The photophysical properties of the obtained compounds were studied; in particular, fluorescence emission was detected in the range 454-482 nm with a quantum yield of up to 54%. We also calculated the HOMO-LUMO energies and optimized molecular structures for the resulting fluorophores. Based on the results of fluorescence titration, the Stern-Volmer constants (up to 21587 M-1) and the detection limits of nitroanalytes (up to 1.4 ppm) were calculated, confirming the possibility of their use as potential chemosensors for the visual detection of nitro-containing explosives.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovalev I. S., Sadieva L. K., Taniya O. S., Yurk V. M., Minin A. S., Kopchuk D. S., Zyryanov G. V., Charushin V. N., Chupakhin O. N.
Заглавие : Bispyrenylalkane chemosensor for the naked-eye detection of nitro-explosives
Место публикации : Chimica Techno Acta. - 2021. - Vol. 8, № 2. - С. 20218209
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): detection of explosives in aqueous media--chemical sensors--fluorescence quenching--pyrene-based fluorophores
Аннотация: Pyrene-based compounds have a great potential as fluorescent chemosensors for various analytes including common nitroexplosives, such as 2,4,6-trinitrotoluene (TNT). Compounds having two pyrene units in one molecule, such as bispyrenylalkanes, are able to form stable, bright emissive in a visual wavelength region excimers both in non-polar and polar environments. In this work we wish to report that in non-polar solvents the excimer has poor chemosensing properties while in aqueous solutions it provides significant “turn-off” fluorescence response to TNT in the subnanomolar concentrations.
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10.

Вид документа : Статья из журнала
Шифр издания : Г/B 68
Автор(ы) : Akulov A. A., Varaksin M. V., Tsmokalyuk A. N., Charushin V. N., Chupakhin O. N.
Заглавие : Blue-light-promoted radical c-h azolation of cyclic nitrones enabled by selectfluor®
Место публикации : Green Chemistry. - 2021. - Vol. 23, № 5. - С. 2049-2057
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: An original approach to achieve the C(sp2)–H azolation of cyclic aldonitrones mediated by Selectfluor® has first been employed. By exploiting a metal-free, visible-light-promoted cross-dehydrogenative C–N coupling reaction between model aldonitrones, 2H-imidazole 1-oxides, and NH-containing azoles, a series of novel azaheterocyclic derivatives have been obtained in yields up to 94%. The elaborated protocol has proved to be appropriate for gram-scale processes and displayed potential for utilization in the synthesis of novel structural analogues of lanabecestat. Besides, mechanistic studies have revealed that this coupling reaction is likely to proceed via a nitroxide-involving radical pathway, encompassing a chain of electron transfer events, such as hydrogen atom transfer (HAT) and single electron transfer (SET).
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