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Общее количество найденных документов : 43
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1.
Инвентарный номер: нет.
   

    Charushin, V. N.
    Chemical elements in medicine / V. N. Charushin, Y. A. Titova, E. R. Milaeva // Herald of the Russian academy of sciences. - 2020. - Vol. 90, № 2. - P229-238
Кл.слова (ненормированные):
BETA-LACTAM ANTIBIOTICS -- BORON NEUTRON CAPTURE THERAPY -- FLUOROQUINOLONES -- HETEROCYCLES
Аннотация: A brief review of chemical elements, compounds from which find application in medicine, ranging from the commonly occurring organogenic elements (carbon, hydrogen, nitrogen, oxygen, sulfur, and phosphorus), composing the structure of proteins and nucleic acids of the cells of living organisms and determining the genetic transmission, to native rarely encountered organic fluorine compounds, synthetic derivatives of which have become firmly ingrained in the arsenal of modern pharmaceutical drugs, is given. Strong emphasis is put on metalloproteins, which play a significant role in the biochemistry of vitally essential processes, as well as metal compounds that are widely used in medicine. Of particular importance are the chemical elements and the isotopes, compounds of which are employed in nuclear medicine for diagnostics and treatment of a wide range of diseases, oncological and cardiovascular in particular.

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2.
Инвентарный номер: нет.
   

   
    Assembly of annulated 1,3-diazapyrenes by consecutive cross-coupling and cyclodehydrogenation of (het)arene moieties / E. V. Verbitskiy, E. M. Dinastiya, O. S. Eltsov [et al.] // Mendeleev communications. - 2020. - Vol. 30, № 2. - P142-144
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Di(het)areno[e,l][1,3]diazapyrene core was constructed by FeCl3-mediated intramolecular oxidative cyclodehydrogenation of 5-[2,6-di(het)arylphenyl]pyrimidine precursors, which in turn were obtained by the Suzuki cross-coupling of 5-(2,6-dibromophenyl)pyrimidine derivative with the corresponding (het)arylboronic acids. Molecular orbital calculations as well as redox and photophysical measurements show that the fused products are promising for organic electronic application.

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3.
Инвентарный номер: нет.
   

    Chupakhin, O. N.
    Application of electrochemical oxidative methods in the C(SP2)–H functionalization of heterocyclic compounds / O. N. Chupakhin, A. V. Shchepochkin, V. N. Charushin // Advances in heterocyclic chemistry. - 2020. - Т. 131. - P1-47
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
C-H FUNCTIONALIZATION -- ELECTROCHEMICAL OXIDATION -- GREEN CHEMISTRY -- OCDC -- SN H REACTIONS
Аннотация: New atom-economic and environmentally friendly processes should replace the traditional ways of building C–C, C–N, C–O, C–P, C–S bonds, which are usually based on the replacement of a halogen atom, and, therefore, required the preliminary modification of substrates, and the use of aggressive reagents, harsh conditions or expensive catalysts. In recent years, the direct metal-free functionalization of the C(sp2)–H bond, which provides the most efficient and low-waste pathway for molecular transformation, has attracted increasing attention. However, these transformations usually require stoichiometric amounts of chemical oxidizing agents. The modern world and its sustainable development trends are forcing the chemical industry to improve in an environmentally friendly direction and meet the requirements of “green chemistry.” In this regard, the use of electrochemical methods is extremely important. Electrochemical anodic oxidation is an ideal option for the replacement of chemical oxidizers in C–H functionalization reactions. The data on the main electrochemical methods and approaches used for the direct functionalization of the C(sp2)–H bond in heterocyclic compounds are classified and summarized in this paper.

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4.
Инвентарный номер: нет.
   

   
    Pyrrolylquinoxaline-2-one derivative as a potent therapeutic factor for brain trauma rehabilitation / E. A. Dutysheva, M. A. Mikeladze, N. D. Aksenov [и др.] // Pharmaceutics. - 2020. - Vol. 12, № 5. - С. 414
Кл.слова (ненормированные):
APOPTOSIS -- CEREBROSPINAL FLUID -- HSP70 -- SMALL MOLECULE -- TRAUMATIC BRAIN INJURY
Аннотация: Traumatic brain injury (TBI) often causes massive brain cell death accompanied by the accumulation of toxic factors in interstitial and cerebrospinal fluids. The persistence of the damaged brain area is not transient and may occur within days and weeks. Chaperone Hsp70 is known for its cytoprotective and antiapoptotic activity, and thus, a therapeutic approach based on chemically induced Hsp70 expression may become a promising approach to lower post-traumatic complications. To simulate the processes of secondary damage, we used an animal model of TBI and a cell model based on the cultivation of target cells in the presence of cerebrospinal fluid (CSF) from injured rats. Here we present a novel low molecular weight substance, PQ-29, which induces the synthesis of Hsp70 and empowers the resistance of rat C6 glioma cells to the cytotoxic effect of rat cerebrospinal fluid taken from rats subjected to TBI. In an animal model of TBI, PQ-29 elevated the Hsp70 level in brain cells and significantly slowed the process of the apoptosis in acceptor cells in response to cerebrospinal fluid action. The compound was also shown to rescue the motor function of traumatized rats, thus proving its potential application in rehabilitation therapy after TBI.

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5.
Инвентарный номер: нет.
   

   
    Azaheterocyclic derivatives of ortho - carborane: synthetic strategies and application opportunities / L. A. Smyshliaeva, M. V. Varaksin, V. N. Charushin, O. N. Chupakhin // Synthesis. - 2020. - Vol. 52, № 3. - P337-352
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AZAHETEROCYCLES -- CARBORANES -- CARBORYNE -- CROSS-COUPLING REACTIONS -- DECABORANE
Аннотация: Azaheterocyclic derivatives of 1,2-dicarba- closo -dodeca borane (ortho -carborane) are known to be of particular interest due to numerous plausible applications, particularly, in medicine, materials science, and advanced technologies. Three principal synthetic strategies resulting in azaheterocyclic carboranes, in which boron-enriched and azaheterocyclic fragments are linked to each other, either directly by means of the C-C bonds or through a short spacer (CH 2, CH 2 S, CH 2 O, etc.), have been outlined. These synthetic approaches are of general character and can be used both individually and in combination to afford promising organoboron clusters of diverse architectures. 1 Introduction 2 C-C Cross-Coupling Strategies in the Synthesis of Azahetero cyclic Carboranes 3 Carboryne-Based Transformation Strategies 4 Condensation Strategies: Reactions of Decaborane B 10 H 14 with Substituted Acetylenes 5 Conclusion and Outlook.

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6.
Инвентарный номер: нет.
   
   H 99

   
    Hypervalent Iodine(III) in Direct Oxidative Amination of Arenes with Heteroaromatic Amines [Electronic resource] / S. Manna, P. O. Serebrennikova, I. A. Utepova, A. P. Antonchick, O. N. Chupakhin // Organic Letters. - 2015. - Vol. 17, № 18. - С. 4588-4591. - Bibliogr. : p. 4591 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
N BOND FORMATION -- CROSS-COUPLING REACTIONS -- C-H AMINATION
Аннотация: A novel, mild, and practical method of amination of simple nonfunctionalized arenes under metal free conditions has been developed. The approach allows coupling of electron-rich arenes with amino derivatives of electron-deficient heterocycles providing rapid access to scaffolds of bioactive compounds and is based on the application of the hypervalent iodine(III) reagent as an oxidant. Regioselective functionalization of C-H bonds of arenes by the formation of C-N bonds under organocatalytic conditions was demonstrated.

\\\\expert2\\nbo\\Organic Letters\\2015, v.17, N 18, p.4588-4591.pdf
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7.
Инвентарный номер: нет.
   
   K 81

    Krasnov, V. P.
    Nonenzymatic Acylative Kinetic Resolution of Racemic Amines and Related Compounds / V. P. Krasnov, D. A. Gruzdev, G. L. Levit // European Journal of Organic Chemistry. - 2012. - Vol.2012, №8. - С. 1471-1493. - Bibliogr. : p. 1491-1493 (76 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
KINETIC RESOLUTION -- ACYLATION -- AMINES -- AMIDES
Аннотация: Acylative kinetic resolution of racemic amines occupies a highly important place among the methods for preparation of enantio enriched or pure amines. Nonenzymatic acylative kinetic resolution is usually carried out in the presence of chiral acyl-transfer catalysts or under the action of chiral enantio- or diastereoselective resolving agents. Recently, this line of investigations has been rapidly developed and very interesting results of design and synthetic application of both new catalysts and chiral acylating agents have been obtained. This microreview summarizes the recent advances in this area.

\\\\expert2\\NBO\\European Journal of Organic Chemistry\\2012, p.1471.pdf
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8.
Инвентарный номер: нет.
   
   A 67

   
    Application of chitosan and its N-heterocyclic derivatives forpreconcentration of noble metal ions and their determination usingatomic absorption spectrometry / Yu. A. Azarova, A. V. Pestov, A. Yu. Ustinov, S. YU. Bratskaya // Carbohydrate Polymers. - 2015. - Vol. 134. - С. 680-686
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHITOSAN -- N-HETEROCYCLIC DERIVATIVES -- SPECTROMETRY

\\\\expert2\\NBO\\Carbohydrate Polymers\\2015, v. 134, p. 680.pdf
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9.
Инвентарный номер: нет.
   
   N 89

   
    Novel push-pull thieno[2,3-b]indole-based dyes for efficient dye-sensitized solar cells (DSSCs) / R. A. Irgashev, A. A. Karmatsky, G. A. Kim, G. L. Rusinov, V. N. Charushin, A. A. Sadovnikov, V. K. Ivanov, S. A. Kozyukhin, V. V. Emets, V. A. Grinberg // Arkivoc. - 2017. - Vol. 4. - P34-50
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DYE-SENSITIZED SOLAR CELLS -- ELECTRON-RICH HETEROCYCLES -- METAL-FREE DYES -- PHOTOVOLTAIC PROPERTIES -- PUSH-PULL STRUCTURE -- THIENO[2,3-B]INDOLE
Аннотация: New metal-free sensitizers (IK 3-6), based on the thieno[2,3-b]indole ring system, bearing various aliphatic substituents at the nitrogen atom (electron-donating part), several thiophene units (π-bridge linker) and 2-cyanoacrylic acid (the electron-accepting and anchoring group) have been synthesized for application in dye-sensitized solar cells (DSSCs). The relationship between the IK dye structure and efficiency of the corresponding DSSC has been elucidated. Power conversion efficiency (PCE) up to 6.3% (short-circuit photocurrent density (JSC) 19.0 mA cm-2, open-circuit voltage (VOC) 0.59 V, and fill factor (FF) 56.4%) were obtained for the DSSC, based on 2-cyano-3-{5-[8-(2-ethylhexyl)-8H-thieno[2,3-b]indol-2-yl]thiophen-2-yl}acrylic acid (IK 3), which proved to be a highly synthetic available compound, under simulated AM 1.5 G irradiation (100 mW cm-2), thus indicating that thieno[2,3-b]indole-based organic dyes are perspective candidates for DSSCs.

\\\\Expert2\\NBO\\ARKIVOC\\2017 v.4 p.34-50.pdf
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10.
Инвентарный номер: нет.
   
   N 52

   
    New V-shaped push-pull systems based on 4,5-di(hetero)aryl substituted pyrimidines: their synthesis and application to the detection of nitroaromatic explosives. / E. V. Verbitskiy, A. A. Baranova, K. I. Lugovik, K. O. Khokhlov, E. M. Cheprakova, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // ARKIVOC. - 2016. - Vol. III. - С. 360-373. - Bibliogr. : p. 370-373 (50 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINES -- SYNTHESIS -- NITROAROMATIC EXPLOSIVES

\\\\expert2\\NBO\\ARKIVOC\\2016, p.360-373.pdf
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