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1.
Инвентарный номер: нет.
   


   
    Chemo-Enzymatic Synthesis and Biological Evaluation of 5,6-Disubstituted Benzimidazole Ribo- and 2′-Deoxyribonucleosides / I. D. Konstantinova, O. M. Selezneva, S. K. Kotovskaya, Z. M. Baskakova, V. N. Charushin, A. V. Baranovsky // Synthesis. - 2013. - Vol.45, № 2. - С. 272-280
Кл.слова (ненормированные):
5,6-DISUBSTITUTED BENZIMIDAZOLES -- NUCLEOSIDES -- PURINE NUCLEOSIDE PHOSPHORYLASE
Аннотация: A number of new 5,6-disubstituted benzimidazoles have been prepared and their substrate properties for recombinant E. coli purine nucleoside phosphorylase (PNP; the product of the deoD gene) in the transglycosylation reaction were investigated. The heterocyclic- bases showed good substrate activity for PNP and the ribo- and 2′-deoxyribonucleosides were synthesized. The predominant (OMe and OEt) or exclusive (Oi-Pr, morpholino, and N-methylpiperazino) formation of the 5-substituted 6-fluoro-1-(β-D-ribofuranosyl)benzimidazoles was observed. The formation of the regioisomeric 6- methoxy-, 6-ethoxy-, or 6-isopropoxy-substituted 1-(2-deoxy-β-D-ribofuranosyl)-5-fluorobenzimidazoles was observed in the trans-2-deoxyribosylation reaction of the corresponding bases. The predominant or exclusive formation of the regioisomeric N1-nucleosides with bulky 5-substituents of 6-fluorobenzimidazole points to a large hydrophobic pocket in the E. coli PNP active site that can accommodate these groups. The biological activity of the synthesized nucleosides was studied and revealed no inhibitory activity against a broad variety of DNA and RNA viruses. The compounds also lacked significant cy

\\\\expert2\\nbo\\Synthesis\\2013, v. 45. N 2. p. 272-280.pdf
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2.
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   C 51


   
    Chemo-enzymatic synthesis and biological evaluation of 5,6-disubstituted benzimidazole ribo- and 2′-deoxyribonucleosides [Электронный ресурс] / I. D. Konstantinova, O. M. Selezneva, I. V. Fateev, T. A. Balashova, S. K. Kotovskaya, Z. M. Baskakova, V. N. Charushin, I. A. Mikhailopulo // Synthesis (Germany). - 2013. - Vol.45, №2, art. N SS-2012-T0784-OP. - P272-280
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
5,6-DISUBSTITUTED BENZIMIDAZOLES -- NUCLEOSIDES -- SUBSTRATE PROPERTIES
Аннотация: A number of new 5,6-disubstituted benzimidazoles have been prepared and their substrate properties for recombinant E. coli purine nucleoside phosphorylase (PNP; the product of the deoD gene) in the transglycosylation reaction were investigated. The heterocyclic bases showed good substrate activity for PNP and the ribo- and 2-deoxyribonucleosides were synthesized. The predominant (OMe and OEt) or exclusive (Oi-Pr, morpholino, and N-methylpiperazino) formation of the 5-substituted 6-fluoro-1-(β-d- ribofuranosyl)benzimidazoles was observed. The formation of the regioisomeric 6- methoxy-, 6-ethoxy-, or 6-isopropoxy-substituted 1-(2-deoxy-β-d- ribofuranosyl)-5-fluorobenzimidazoles was observed in the trans-2- deoxyribosylation reaction of the corresponding bases. The predominant or exclusive formation of the regioisomeric N1-nucleosides with bulky 5-substituents of 6-fluorobenzimidazole points to a large hydrophobic pocket in the E. coli PNP active site that can accommodate these groups. The biological activity of the synthesized nucleosides was studied and revealed no inhibitory activity against a broad variety of DNA and RNA viruses. The compounds also lacked significant cytotoxicity

\\\\expert2\\nbo\\Synthesis\\2013, v. 45. N 2. p. 272-280.pdf
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3.
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    Chemo-Enzymatic Synthesis and Biological Evaluation of 5,6-Disubstituted Benzimidazole Ribo- and 2′-Deoxyribonucleosides / I. D. Konstantinova, O. M. Selezneva, S. K. Kotovskaya, Z. M. Baskakova, V. N. Charushin, A. V. Baranovsky // Synthesis. - 2012. - Vol.45. - Article in press
Кл.слова (ненормированные):
5,6-DISUBSTITUTED BENZIMIDAZOLES -- NUCLEOSIDES -- PURINE NUCLEOSIDE PHOSPHORYLASE
Аннотация: A number of new 5,6-disubstituted benzimidazoles have been prepared and their substrate properties for recombinant E. coli purine nucleoside phosphorylase (PNP; the product of the deoD gene) in the transglycosylation reaction were investigated. The heterocyclic- bases showed good substrate activity for PNP and the ribo- and 2′-deoxyribonucleosides were synthesized. The predominant (OMe and OEt) or exclusive (Oi-Pr, morpholino, and N-methylpiperazino) formation of the 5-substituted 6-fluoro-1-(β-D-ribofuranosyl)benzimidazoles was observed. The formation of the regioisomeric 6- methoxy-, 6-ethoxy-, or 6-isopropoxy-substituted 1-(2-deoxy-β-D-ribofuranosyl)-5-fluorobenzimidazoles was observed in the trans-2-deoxyribosylation reaction of the corresponding bases. The predominant or exclusive formation of the regioisomeric N1-nucleosides with bulky 5-substituents of 6-fluorobenzimidazole points to a large hydrophobic pocket in the E. coli PNP active site that can accommodate these groups. The biological activity of the synthesized nucleosides was studied and revealed no inhibitory activity against a broad variety of DNA and RNA viruses. The compounds also lacked significant cy

\\\\expert2\\nbo\\Synthesis\\2012, Article in press.pdf
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4.
Инвентарный номер: нет.
   
   C 51


   
    Chemoenzymatic Synthesis and Antiherpes Activity of 5-Substituted 4,6-Difluorobenzimidazoles Ribo- and 2′-Deoxyribonucleosides [Электронный ресурс] / M. I. Kharitonova, I. V. Fateev, A. L. Kayushin, I. D. Konstantinova, S. K. Kotovskaya, V. L. Andropova, G. A. Galegov, V. N. Charushin, A. I. Miroshnikov // Synthesis (Germany). - 2016. - Vol. 48, № 3. - С. 394-406. - Bibliogr. : p. 405-406 (37 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DRUG DISCOVERY- -- NUCLEOSIDES -- HERPES SIMPLEX VIRUS
Аннотация: A series of 5,6-disubstituted benzimidazole nucleosides, obtained earlier, did not show any significant antiviral activity at relatively low cytotoxicity in vitro. In the course of our research we have succeeded in introducing an additional fluorine atom into the benzimidazole ring system. A new series of 4,6-difluorobenzimidazoles, bearing various groups (fluoro-, methoxy-, ethoxy-, morpholino-, and pyrrolidino-) in the 5-position of the benzene ring, have been synthesized. All these compounds proved to be substrates for recombinant E. coli purine nucleoside phosphorylase (PNP) in the transglycosylation reaction. Effective methods for the synthesis of ribo- and 2′-deoxyribonucleosides with high yields (60–90%) have been described, and the formation of regioisomeric N3-nucleosides of benzimidazoles have been detected. The biological activity of the nucleosides obtained against herpes simplex virus type 1 (HSV-1) has been elucidated. All compounds show a low cytotoxicity in the cell culture Vero E6. 4,5,6-Trifluoro-1-(β-d-ribofuranosyl)benzimidazole and 5-methoxy-4,6-difluoro-1-(β-d-2′-deoxyribofuranosyl)benzimidazole proved to inhibit completely the progression of the virus cytopathic effect (CPE) at a multiplicity of infection (MOI) of 0.01 PFU/cell.

\\\\expert2\\nbo\\Synthesis\\2016, v. 48. p.394-406.pdf
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5.
Инвентарный номер: нет.
   
   C 51


   
    Chemoenzymatic Synthesis of Modified 2′-Deoxy-2′-fluoro-β-d-arabinofuranosyl Benzimidazoles and Evaluation of Their Activity Against Herpes Simplex Virus Type 1 / M. I. Kharitonova, K. V. Antonov, I. V. Fateev, M. Ya. Berzina, S. K. Kotovskaya, V. N. Charushin // Synthesis (Germany). - 2017. - Vol. 49, № 5. - С. 1043-1052
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHEMOENZYMATIC SYNTHESIS -- BENZIMIDAZOLES -- HERPES SIMPLEX VIRUS TYPE 1
Аннотация: 1-(2′-Deoxy-2′-fluoro-β-d-arabinofuranosyl)benzimidazoles containing 4,6-difluoro-, 4,5,6-trifluoro-, 5-fluoro-6-methoxy-, and 5-methoxy-4,6-difluorobenzimidazole fragments were synthesized by using purine nucleoside phosphorylase-catalyzed chemoenzymatic approach. As expected, enzymatic synthesis of nucleosides proceeds in lower yields of target compounds in comparison with the synthesis of ribo- and 2′-deoxyribobenzimidazoles (40–55% vs 60–90%). The compounds obtained were tested against the herpes simplex virus type 1, by using the Vero E6 cells. 5-Methoxy-4,6-difluoro-1-β-d-(2′-deoxy-2′-fluoroarabinofuranosyl)benzimidazole did not show any antiviral activity, when used in nontoxic concentration. All other nucleosides proved to exhibit a selective antiherpes activity. In contrast, it was shown that benzimidazole-β-d-arabinofuranosides of both di- and trisubstituted derivatives, having substituents in positions 4–6 of the benzene ring, as well as unsubstituted compounds, cannot be synthesized by enzymatic transglycosylation. 1-(β-d-Arabinofuranosyl)benzimidazole was obtained through glycosylation of N-trimethylsilylbenzimidazole with 1-chloro-2,3,5-O-methoxymethyl-d-arabinose. The behavior of this compound, as inhibitor of purine nucleoside phosphorylase (PNP) E. сoli, was investigated. 1-(β-d-Arabinofuranosyl)benzimidazole was found to belong to a mixed type of inhibitors of PNP. This fact explains why all attempts to perform enzymatic arabinosylation of 4,6-di-, 5,6-di-, and 4,5,6-trisubstituted benzimidazoles failed

\\\\expert2\\NBO\\Synthesis\\2017, v. 49(5), p. 1043-1052.pdf
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6.
Инвентарный номер: нет.
   
   C 51


   
    Chemoenzymic arabinosylation of 2-aminopurine bearing the chiral fragment of 7,8-difluoro-3-methyl-3,4-dihydro-2H-[1,4]benzoxazines [Electronic resource] / B. Z. Eletskaya, I. D. Konstantinova, A. S. Paramonov, S. E. Esipov, D. A. Gruzdev, A. Yu. Vigorov, G. L. Levit, A. I. Miroshnikov, V. P. Krasnov, V. N. Charushin // Mendeleev Communications. - 2016. - Vol. 26, № 1. - С. 6-8
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PURINE NUCLEOSIDE PHOSPHORYLASE -- 2-AMINOPURINE CONJUGATES
Аннотация: Chemoenzymic transglycosylation of 2-​aminopurine conjugates with enantiomerically pure 7,8-​difluoro-3-​methyl-3,4-dihydro-2H-[1,4]​benzoxazines under the action of recombinant E. coli purine nucleoside phosphorylase afforded the corresponding arabinofuranosides, yields of the target compds. being dependent on both the structure and configuration of the fragment of heterocyclic amine attached at C-​6 position of purine moiety.

\\\\expert2\\nbo\\Mendeleev Communications\\2016, v.26, p. 6-8.pdf
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7.
Инвентарный номер: нет.
   
   N 89


   
    Novel purine conjugates with N-heterocycles: synthesis and anti-influenza activity / V. P. Krasnov, V. V. Zarubaev, D. V. Gruzdev [et al.] // Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 4. - P498-504
УДК
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
6-CHLOROPURINE -- HETEROCYCLIC AMINES -- ANTIVIRAL ACTIVITY -- INFLUENZA A AND B VIRUSES
Аннотация: A number of novel amides were synthesized by coupling of 6-[(9H-purin-6-yl)amino]hexanoic acid to heterocyclic amines. The antiviral activity of the obtained compounds, as well as of purine conjugates in which 7,8-difluoro-3-methyl-3,4-dihydro-2H-1,4-benzoxazine is linked to position 6 of purine through a fragment of ɷ-amino acids with varying lengths of polymethylene chains against influenza A and B viruses was studied in vitro. Purine derivatives have been shown to have moderate activity against influenza A (H1N1) virus. The antiinfluenza activity and cytotoxicity of conjugates with 7,8-difluoro-3-methyl-3,4-dihydro-2H-1,4-benzoxazine depend on the length of the linker fragment.

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8.
Инвентарный номер: нет.
   
   C 57


    Chupakhin, O. N.
    Scientific foundations for the creation of antiviral and antibacterial preparations [Electronic resource] / O. N. Chupakhin, V. N. Charushin, V. L. Rusinov // Herald of the Russian Academy of Sciences. - 2016. - Vol. 86, № 3. - С. 206-212
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TRIAZIDE AND AZOLOAZINE DERIVATIVES -- TRIAZAVIRIN -- PROTEIN DISULFIDE ISOMERASE
Аннотация: The results of the Ural scientific school's organic chemists on the creation of antiviral and antibacterial, including antitubercular, chemopreparations are considered. Basic research data were generalized on the synthesis and study of antiviral activity and the establishment of the metabolism and mechanism of azoloazine series compounds-azaanalogs of adenine and guanine, as well as their nucleosides, which led to the creation of a new family of antiviral substances. One of them, triazavirin, has become a regular therapeutic fixture as an antiflu preparation. The results of synthetic and biological studies on substituted pyrimidines, nucleosides of the benzimidazole and purine series, and other biologically active azaheterocycles are also discussed.

\\\\expert2\\NBO\\Herald of the Russian Academy of Sciences\\2016. V. 86, N 3. P. 206-212.pdf
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9.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and antiherpetic activity of novel purine conjugates with 7,8-difluoro-3-methyl-3,4-dihydro-2H-1,4-benzoxazine / O. A. Vozdvizhenskaya, V. L. Andronova, G. A. Galegov [et al.] // Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 4. - P490–497
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
6-CHLOROPURINE -- ANTIVIRAL ACTIVITY -- HERPES SIMPLEX VIRUS TYPE 1
Аннотация: A method for the synthesis of novel purine conjugates with 7,8-difluoro-3-methyl-3,4-dihydro-2H-1,4-benzoxazine containing fragments of ω-amino acids with different lengths of the polymethylene chain as a linker has been developed. It was found in experiments in vitro that the obtained compounds are active against the herpes simplex virus type 1, including the acyclovir-resistant strain.

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10.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and antimycobacterial activity of N-(2-aminopurin-6-yl) and N-(purin-6-yl) amino acids and dipeptides [Electronic resource] / V. P. Krasnov, A. Yu. Vigorov, V. V. Musiyak, I. A. Nizova, D. A. Gruzdev, T. V. Matveeva, G. L. Levit, V. N. Charushin // Bioorganic and Medicinal Chemistry Letters. - 2016. - Vol. 26, № 11. - С. 2645-2648
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PURINE -- GLUTAMIC ACID -- AMINO ACIDS
Аннотация: Synthetic routes to novel N-(purin-6-yl)- and N-(2-aminopurin-6-yl) conjugates with amino acids and glycine-containing dipeptides were developed. In vitro testing of 42 new and known compounds made it possible to reveal a series of N-(purin-6-yl)- and N-(2-aminopurin-6-yl) conjugates exhibiting significant antimycobacterial activity against Mycobacterium tuberculosis H37Rv, Mycobacterium avium, Mycobacterium terrae, and multidrug-resistant M. tuberculosis strain isolated from tuberculosis patients in the Ural region (Russia). N-(2-Aminopurin-6-yl)- and N-(purin-6-yl)-glycyl-(S)-glutamic acids were the most active compounds. (C) 2016 Elsevier Ltd. All rights reserved

\\\\expert2\\NBO\\Bioorganic and Medicinal Chemistry Letters\\2016, v. 26, p. 2645.pdf
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