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1.
Инвентарный номер: нет.
   

   
    (E)-1,1,1-trifluoro-4-phenyl-but-2-ene-4-one and trimethyl phosphite [Text] / V. G. Ratner, E. Lork, K. I. Pashkevich, G. -V. Roeschenthaler // Journal of Fluorine Chemistry. - 2000. - Vol. 102, № 1-2. - P73-77
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The interaction of (E)-1,1,1-trifluoro-4-phenyl-but-2-ene-4-one (1) with trimethyl phosphite affords in a [4 + 1] cycloaddition the 1,2?5-oxaphospholene 2 as a sole product which upon hydrolysis is transformed into the fluoroalkyl containing ?-ketophosphonate 4. When the reaction is carried out in the presence of small mounts of water, in addition to 2 as a main product, the phosphoric acid ester 6 of the enolic dimer of ketone 1 is also formed. The molecular structure of compound 6 (monoclinic P 2(1)/c with a = 2088.60(2), b = 1403.1(3), c = 1613.8(1) pm, ? = 90, ? = 100.97(1), ? = 90°, Z = 8) was determined, indicating two independent molecules with (RR) and (SS) configuration and disordered CF3 groups.????

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2.
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   A 18

   
    Acidic hydrolysis of N-acyl-1-substituted 3-amino-1,2-dicarba-closo-dodecaboranes [Electronic resource] / G. L. Levit, A. M. Demin, M. I. Kodess, M. A. Ezhikova, L. Sh. Sadretdinova, V. A. Ol'shevskaya, V. N. Kalinin, V. P. Krasnov, V. N. Charushin // Journal of Organometallic Chemistry. - 2005. - Vol. 690, № 11. - P2783-2786
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Acidic hydrolysis of N-acyl 1-methyl- and 1-phenyl-3-amino-1,2-dicarba-closo-dodecaboranes has been studied. It has been shown that acidic hydrolysis of diastereomeric amides of 1-methyl-3-amino-1,2-dicarba-closo-dodecaborane results in the partial racemization of the target 3-amino-1-methylcarborane. Under the similar conditions, the hydrolysis of N-acyl-3-amino-1-phenyl-1,2-dicarba-closo-dodecaboranes resulted in amide bond cleavage accompanied by simultaneous deboronation with the removal of boron atom at position 6 of carborane cage and formation of 7,8-dicarba-nido-undecaborane derivative according to 11B and 1H NMR spectroscopy.

\\\\Expert2\\nbo\\Journal of Organometallic Chemistry\\2005, v. 690, p.2783.pdf
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3.
Инвентарный номер: нет.
   

   
    Bioactive silicon-iron-containing glycerohydrogel synthesized by the sol-gel method in the presence of chitosan / T. G. Khonina, D. S. Tishin, L. P. Larionov [et al.] // Russian chemical bulletin. - 2022. - Vol. 71, № 11. - P2342-2351
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A novel biologically active nanocomposite glycerohydrogel based on two biocompatible precursors, silicon and iron glycerolates, was synthesized by the sol—gel method in the presence of chitosan (Ch). The composition and structural features of the gel were characterized by advanced analytical methods including transmission electron microscopy, X-ray diffraction, and atomic emission spectroscopy. It was shown that iron(iii) monoglycerolate undergoes partial hydrolysis under the gelation conditions and exists as a separate nanoscale phase along with the hydrolysis products in cells of the 3D Si-containing polymeric gel network. This network is formed as a result of incomplete hydrolysis of silicon glycerolates in excess glycerol followed by homo- and heterofunctional condensation of silanol groups with the formation of Si-O-Si units containing residual glyceroxy groups at the silicon atom. Chitosan forms numerous intermolecular bonds with the 3D gel network, accelerates the process of gelation, makes the gel morphostructure more ordered, and increases the stability of the gel. The Si-Fe-Ch-containing glycerohydrogel is nontoxic and possesses hemostatic and wound-healing activity, being a promising topical medication for medical and veterinary practice.

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4.
Инвентарный номер: нет.
   
   C 52

    Chizhov, D. L.
    Convenient Rout to Regioisomeric Fluorinated Keto-Phosphonic Acids [Text] : доклад, тезисы доклада / D. L. Chizhov, V. N. Charushin, G. -V. Roeschenthaler // 18th ISFC international Symposium on Fluorine Chemistry. Bremen, 30th Jul.-4 Aug. 2006 г. : Final Program. Abstracts. - Bremen, 2006. - P260
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
KETO-PHOSPHONIC -- HYDROLYSIS

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5.
Инвентарный номер: нет.
   
   C 52

    Chizhov, D. L.
    Reaction of trifluoromethylated beta-alkoxyenones with tris(trimethylsilyl) phosphite: A temperature influence on regioselectivity [Text] / D. L. Chizhov, G. -V. Roeschenthaler // Journal of Fluorine Chemistry. - 2006. - Vol. 127, № 2. - P235-239
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The interaction of tris(trimethylsilyl) phosphite (TMSO)3P and E-trifluoromethyl-alkoxyenones CF3C(O)CHCHOEt and CF3C(O)CHC(OMe)Me yielded mixtures of E-1,2- and Z-1,4-adducts, CF3C(OTMS)[P(O)(OTMS)2]CCH(OAlk)R 2 and CF3(OTMS)CCHCR(OAlk)[P(O)(OTMS)2] 3 where R and Alk = H and Me, or both Me. Conversion of these 1,2-adducts to 1,4-isomers was effected by increased temperature or by exposure to more tris(trimethylsilyl) phosphite. Acid hydrolysis of 2b (R and Alk = Me) gave ketophosphonic acid CF3C(OH)[P(O)(OH)2]CH2COMe in 88% yield, whereas hydrolysis of 2a (R = H and Alk = Et) with KOH in methanol gave CF3C(OH)[P(O)(OK)2]CHCHOEt in 37% yield. Acid hydrolysis of 3a (R = H and Alk = Et) and 3b (R and Alk = Me) gave phosphonic acid CF3C(OH)2CHCHP(O)(OH)2 in 82% yield and trifluoromethylated 1,2,5,4-oxaphosphol-3-en

\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2006, v.127, p.235.pdf
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6.
Инвентарный номер: нет.
   
   C 74

   
    Composition, structure, and properties of pharmacologically active silicon dimethylglycerolates [Electronic resource] / T. G. Khonina, E. Yu. Larchenko, E. V. Shadrina, I. N. Ganebnuikh, A. A. Boyko, E. G. Matochkina, M. I. Kodess, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 12. - P2230-2235. - Bibliogr. : p. 2235 (13 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 1H and 29Si NMR spectroscopy showed that the product of the reaction of dimethyldiethoxysilane with glycerol in the molar ratio 1: 2 is an equilibrium mixture of dimethyldiglyceroxysilane and low-molecular-weight condensation products. The change of viscosity of silicon dimethylglycerolates, synthesized using different excesses of glycerol, versus time was studied by viscosimetry. Composition of products of hydrolysis and condensation of silicon dimethylglycerolates is determined by their concentration in the starting aqueous solutions

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (12), 2230-2235.pdf
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7.
Инвентарный номер: нет.
   
   E 54

   
    Enantiomers of 3-amino-1-methyl-1,2-dicarba-closo-dodecaborane [Text] / V. P. Krasnov, G. L. Levit, V. N. Charushin, M. I. Kodess, V. N. Kalinin, O. N. Chupakhin // Tetrahedron: Asymmetry . - 2002. - Vol. 13, № 16. - P1833-1835. - Bibliogr. : p. 1835 (6 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The enantiomers of 3-amino-1-methyl-1,2-dicarba-closo-dodecaborane were prepared by means of resolution of the racemic mixture via acylation by (S)-naproxen chloride followed by separation and subsequent acid hydrolysis of each of the diastereoisomeric amides. Partial racemization of enantiomeric 3-aminocarboranes was observed during acid hydrolysis

\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2002, v.13, p.1833.pdf
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8.
Инвентарный номер: нет.
   
   F 70

   
    Fluoroaryl containing beta,beta-dioxoesters in the synthesis of fluorobenzopyran-4(2)-ones [Text] / S. P. Kisil', Ya. V. Burgart, V. I. Saloutin, O. N. Chupakhin // Journal of Fluorine Chemistry. - 2001. - Vol. 108, № 2. - P125-131
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluoroaryl containing ?,??-dioxoesters and their copper(II) chelates have been prepared by acylation of ethyl acetoacetate with 2,6-dimethoxy-3,4,5-trifluorobenzoyl, 2-methoxy-3,4,5,6-tetrafluorobenzoyl and pentafluorobenzoyl chlorides. Cyclization of these ?,??-dioxoesters leads to formation of substituted fluorochromones. Depending on conditions, 2-methyl-5-methoxy-6,7,8-trifluoro-3-ethoxycarbonylchromone hydrolyzed to 5-hydroxy-2-methyl-6,7,8-trifluorochromone or 5-hydroxy-2-methyl-6,7,8-trifluorochromone-3-carboxylic acid. The same chromone reacts with morpholine to form a seven-substituted product and ammonium hydroxide to give 3-iminoacetyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Hydrolysis of the latter affords 3-acetyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Ethyl-2-(2,6-dimethoxy-3,4,5-trifluorobenzoyl)-3-oxobutanoates undergoes ketone-splitting to 1-(2,6-dimethoxy-3,4,5-trifluorophenyl)-1,3-butandione????

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9.
Инвентарный номер: нет.
   
   H 99

   
    Hydrolysis of 1-methyl- and 1-phenyl-3-amino-1,2-dicarba-closo-dodecarborane amides [Text] : доклад, тезисы доклада / G. L. Levit, A. M. Demin, M. I. Kodess, M. A. Ezhikova, L. Sh. Sadretdinova, V. A. Ol'shevskaya, V. N. Kalinin, V. P. Krasnov, V. N. Charushin // Euroboron 3, The 3rd European Meeting on Boron Chemistry, Pruhonice-by-Prague, Czech Republic, 12-16 Sept. 2004 : abstr. . - Pruhonice-by-Prague, Czech Republic, 2004. - P39
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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10.
Инвентарный номер: нет.
   
   H 99

   
    Hydrolysis of fluoroalkyl-containing beta-aminovinyl ketones [Electronic resource] / L. N. Bazhenova, V. I. Filyakova, V. E. Kirichenko, K. I. Pashkevich // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1991. - Vol. 40, N 3. - P581-585
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1991, 40 (3), 581.pdf
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11.
Инвентарный номер: нет.
   
   K 46

   
    Kinetic resolution of (±)-2,3-dihydro-3-methyl-4H-1,4-benzoxazine, (±)-2-methyl-1,2,3,4-tetrahydroquinoline and (±)-2-methylindoline using N-tosyl-(S)-prolyl chloride [Text] / V. P. Krasnov, G. L. Levit, I. M. Bukrina, I. N. Andreeva, L. Sh. Sadretdinova, M. A. Koroleva, M. I. Kodess, V. N. Charushin, O. N. Chupakhin // Tetrahedron: Asymmetry . - 2003. - Vol. 14, № 14. - P1985-1988. - Bibliogr. : p. 1988 (6 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Acylation of racemic 2,3-dihydro-3-methyl-4H-1,4-benzoxazine, 2-methyl-1,2,3,4-tetrahydroquinoline and 2-methylindoline with N-tosyl-(S)-prolyl chloride resulted in their kinetic resolution with the predominant formation of (R,S)-diastereoisomeric amides, des being 80, 66 and 38%, respectively. Recrystallisation of the amides followed by acid hydrolysis gave individual (R)-enantiomers of heterocyclic amines

\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2003, v.14, p.1985.pdf
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12.
Инвентарный номер: нет.
   
   K 46

   
    Kinetic resolution of (±)-2-methyl-1,2,3,4-tetrahydroquinoline and (±)-2-methylindoline [Electronic resource] / V. P. Krasnov, G. L. Levit, I. N. Andreeva, A. N. Grishakov, V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 2002. - Vol. 12, № 1. - P27-28
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The acylation of racemic 2-methyl-1,2,3,4-tetrahydroquinoline and 2-methylindoline by (S)-naproxen acyl chloride resulted in their kinetic resolution with the predominant formation of (S,S)-diastereoisomeric amides (de 78–76%), recrystallisation of which followed by acid hydrolysis gave individual (S)-isomers of heterocyclic amines????

\\\\expert2\\nbo\\Mendeleev Communications\\2002, v.12, N 1. p.27.pdf
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13.
Инвентарный номер: нет.
   
   K 49

    Kisil', S. P.
    New Fluoroaryl-containing beta,beta'-Dioxoesters in the Synthesis of Fluorobenzopyran-2(4)-ones [Electronic resource] / S. P. Kisil', Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2001. - Vol. 37, № 10. - P1455-1462
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: For the first time were obtained ethyl 2-(2-methoxy-3,4,5,6-tetrafluorobenzoyl)-3-oxobutanoate and ethyl 2-pentafluorobenzoyl-3-oxobutanoate and their copper chelates. The compounds were prepared by acylation of ethyl acetoacetate with 2-methoxy-3,4,5,6-tetrafluoro- and pentafluorobenzoyl chlorides. Cyclization of these ,'-dioxoesters afforded substituted chromones. 2-Methyl-5-methoxy-6,7,8-trifluoro-3-ethoxycarbonylchromone hydrolyzes depending on reaction conditions either to 5-hydroxy-2-methyl-6,7,8-trifluorochromone or to 5-hydroxy-2-methyl-6,7,8-trifluorochromone-3-carboxylic acid. Reaction with morpholine provided 7-substituted product, and with aqueous ammonia as a result of rearrangement forms 3-acetimidoyl-4-hydroxy-5-methoxy-6,7,8-trifluorocoumarin. Hydrolysis of the latter yields 3-acetyl-4-hydroxy-5-methoxy-6,7,8-triflu

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2001, 37 (10), 1455.pdf
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14.
Инвентарный номер: нет.
   
   N 10

   
    N-alkylation of chitosan by beta-halopropionic acids in the presence of various acceptors [Text] / A. V. Pestov, Yu. A. Skorik, G. Kogan, Yu. G. Yatluk // Journal of Applied Polymer Science . - 2008. - Vol. 108, № 1. - P119-127
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: N-carboxyethylation of chitosan by -halopropionic acids in the presence of various proton and halogen ion acceptors was investigated. It has been observed that carboxyethylation of chitosan in aqueous medium is accompanied by the by-processes of hydrolysis and dehydrohalogenation of the -halopropionic acids yielding -hydroxypropionic acid, bis(2-carbox-yethyl) ether, and acrylic acid. Degree of carboxyethyl substitution (DS) of chitosan and the relative rates of the by-processes varied significantly depending on the conditions used and nature of the proton or halogen ion acceptor. At carboxyethylation of chitosan with the alkaline -bromopropionates, the DS increased in the order Cs+ Rb- K+ sim; Na+ Li-.

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15.
Инвентарный номер: нет.
   
   N 89

   
    Novel fluorinated chromones [Text] / V. I. Saloutin, Z. E. Skryabina, I. T. Bazyl, O. N. Chupakhin // Journal of Fluorine Chemistry. - 1993. - Vol. 65, N 1-2. - P37-41
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The self-condensation of ethyl pentafluorobenzoylacetate leads to the formation of 3-pentafluorophenyl-1H-sopyrono[2,3-b]-6,7,8,9-tetrafluorochrom in 37% yeld. On hydrolysis, this gave 2-pentafluorobenzoylmethyl-5,6,7,8-tetrafluorochromone

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16.
Инвентарный номер: нет.
   

   
    Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability / N. S. Boltacheva, P. A. Slepukhin, M. G. Pervova [et al.] // Russian chemical bulletin. - 2022. - Vol. 71, № 4. - P1464-1473
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Nitrosation of lithium 1,3-diketonates bearing fluoroalkyl and aryl (or hetaryl) substituents in positions 1 and 3 results in 3-polyfluoroalkyl-1,2,3-propanetrione 2-oximes (from this point on, oximes). Under similar conditions, lithium (Z)-1,1,1-trifluoro-4-oxo-4-(thien-2-yl)-2-buten-2-olate forms a hydration product of the corresponding oxime. Nitrosation of fluoroalkyl-containing lithium 1,3-diketonates is accompanied by retro-decomposition of the initial lithium 1,3-diketonates and the target oximes (or their hydration products) followed by oxidation and hydrolysis of the reaction products. Under the GC-MS conditions, the oximes undergo partial thermal decomposition to 2-aryl(hetaryl)-2-oxoethanenitriles. An analysis of solutions of the oximes in DMSO-d6 by 1H and 19F NMR spectroscopies revealed isomerization and hydration of these compounds. The temperature ranges of stability of the oximes were determined by thermogravimetric analysis and differential thermal analysis. The molecular and crystal structures of 4,4-difluoro-1-(4-methoxyphenyl)-1,2,3-butanetrione 2-oxime and 4,4,4-trifluoro-1-(thien-2-yl)-1,2,3-butanetrione 2-oxime were determined by X-ray diffraction.

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17.
Инвентарный номер: нет.
   

   
    Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability / N. S. Boltacheva, P. A. Slepukhin, M. G. Pervova [et al.] // Russian chemical bulletin. - 2022. - Vol. 71, № 7. - P1464-1473
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Nitrosation of lithium 1,3-diketonates bearing fluoroalkyl and aryl (or hetaryl) substituents in positions 1 and 3 results in 3-polyfluoroalkyl-1,2,3-propanetrione 2-oximes (from this point on, oximes). Under similar conditions, lithium (Z)-1,1,1-trifluoro-4-oxo-4-(thien-2-yl)-2-buten-2-olate forms a hydration product of the corresponding oxime. Nitrosation of fluoroalkyl-containing lithium 1,3-diketonates is accompanied by retro-decomposition of the initial lithium 1,3-diketonates and the target oximes (or their hydration products) followed by oxidation and hydrolysis of the reaction products. Under the GC-MS conditions, the oximes undergo partial thermal decomposition to 2-aryl(hetaryl)-2-oxoethanenitriles. An analysis of solutions of the oximes in DMSO-d6 by 1H and 19F NMR spectroscopies revealed isomerization and hydration of these compounds. The temperature ranges of stability of the oximes were determined by thermogravimetric analysis and differential thermal analysis. The molecular and crystal structures of 4,4-difluoro-1-(4-methoxyphenyl)-1,2,3-butanetrione 2-oxime and 4,4,4-trifluoro-1-(thien-2-yl)-1,2,3-butanetrione 2-oxime were determined by X-ray diffraction.

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18.
Инвентарный номер: нет.
   

   
    Polyfluorosalicylic acids as ligands for the creation of bioactive metal complexes / E. V. Shchegolkov, I. V. Shchur, Y. V. Burgart, V. I. Saloutin // AIP conference proceedings. - 2022. - Vol. 2390. - Ст. 020076
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
LIGANDS
Аннотация: The reactions of copper(II) and cobalt(II) mixed complexes based on methyl trifluorosalicylate and 2,2’-bipyridine and 1,10-phenanthroline with 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) as the Lewis acid were investigated. In the case of copper(II) complexes, the hydrolysis of ester fragment occurred to form heteroligand complexes of trifluorosalicylic acid and bipyridine-like ligand associated with fluorinated alcohol. The structure of complexes corresponded to [Cu(L3-H2)(bipy or phen)*(HFIP), L3 −trifluorosalicylic acid]. In contrast, cobalt(II) complexes in refluxing HFIP resulted in the complexes [Co(L1-H)2(bipy or phen)*(HFIP), L1 – methyl trifluorosalicylate], in which the ester ligand was preserved.

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19.
Инвентарный номер: нет.
   
   P 80

   
    Polymers Based on Epoxy Resins and Functional Derivatives of Polychlorobiphenyls [Electronic resource] / N. Yu. Ostanina, L. D. Dultseva, A. L. Suvorov, O. N. Chupakhin // Russian Journal of Applied Chemistry. - 2002. - Vol. 75, № 5. - P814-817
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A new way to utilize polychlorobiphenyls was suggested: transformation of Sovol base hydrolysis products into glycidyl ethers and titanates. The resulting products were tested as components of epoxy compounds which are subsequently cured to obtain three-dimensional polymer networks

\\\\Expert2\\nbo\\Russian Journal of Applied Chemistry\\2002, v. 75, N. 5, p.814.pdf
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20.
Инвентарный номер: нет.
   

    Rammohan, A.
    Minireview: Remdesivir, a prominent nucleotide/nucleoside antiviral drug / A. Rammohan, G. V. Zyryanov // Polycyclic aromatic compounds. - 2021. - Vol. 42, № 8. - P5824-5831
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ANTIVIRAL DRUG -- NUCLEOTIDE ANALOGUE -- REMDESIVIR
Аннотация: Nucleotide analogues are the divergent scaffolds that are reliable potential therapeutic drugs to treat the wide range of diseases including viral infections. For instance, Remdesivir is a biologically important nucleotide analogue prodrug that can act as a key drug target for the diseases Ebola and COVID-19. Remdesivir is a structurally chiral aryloxy-phosphoramidate prodrug as it is metabolized into nucleoside triphosphate (active drug form) inside the cell through sequential reactions by ester mediated-hydrolysis. Thus, the current minireview focuses on the earlier reported synthetic approaches of key fragments of remdesivir and their developments to attain the scale-up yields of the drug for clinical/commercial applies. Further, this review serves as a template for the design and development of other complex organic molecules.

https://doi.org/10.1080/10406638.2021.1947331
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