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1.
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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

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2.
Инвентарный номер: нет.
   
   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.
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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