Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Alla K. Shestakova"'
Autor:
Vyacheslav V. Samoshin, Dmitriy E. Gremyachinskiy, Vyacheslav A. Chertkov, Barbora Brazdova, Elena K. Dobretsova, Alla K. Shestakova, Lidia P. Vatlina, Hans-Jörg Schneider
Publikováno v:
ARKIVOC, Vol 2005, Iss 4, Pp 129-141 (2005)
Externí odkaz:
https://doaj.org/article/4e85dbc7a459439dbb39993806e06360
In this work, we carried out an extended verification of the 13C15N spinspin coupling constants as a new structural indicator of nitrogen-containing organic compounds. In this regard, we performed a quantum-chemical calculation (B3LYP with basis set
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28c7f4c265148827963812a8dc63c87b
https://doi.org/10.21203/rs.3.rs-1979393/v2
https://doi.org/10.21203/rs.3.rs-1979393/v2
In this work, we carried out an extended verification of the 13C‑15N spin‑spin coupling constants as a new structural indicator of nitrogen-containing organic compounds. In this regard, we performed a quantum-chemical calculation of a set of 193
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cffd90539d867b86bd039f7729cbf6e
https://doi.org/10.21203/rs.3.rs-1979393/v1
https://doi.org/10.21203/rs.3.rs-1979393/v1
Nitrogen is an essential element involved in many interactions in living chemistry, the formation of hydrogen bonds, participation in the acidbase balance in vital systems. It plays a key role in the construction of a huge number of organic and natur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fd192ba7a5ef5f084955a1c7c7629b1
https://doi.org/10.21203/rs.3.rs-1735476/v1
https://doi.org/10.21203/rs.3.rs-1735476/v1
Autor:
E. A. Zaitseva, Galina Shumakovich, Vyacheslav A. Chertkov, Olga Morozova, M. E. Khlupova, Alexander V. Kisin, Alla K. Shestakova, I. S. Vasil’eva, Alexander I. Yaropolov
Publikováno v:
Moscow University Chemistry Bulletin. 73:237-243
Multicopper oxidases such as bilirubin oxidase (BOD) from Myrothecium verrucaria and laccase (LC) from the basidial fungus Trametes hirsuta have been used as catalysts in dihydroquercetin (DHQ) oxidative polymerization. The conditions selected enable
Autor:
Natalya V. Pashintseva, Alla K. Shestakova, Alexander I. Yaropolov, Galina Shumakovich, M. E. Khlupova, Olga Morozova, Vyacheslav A. Chertkov, Alexander V. Kisin, I. S. Vasil’eva, S. S. Shishkin, L. I. Kovalev
Publikováno v:
Biochemistry (Moscow). 83:992-1001
Derivatization of the natural flavonoid dihydroquercetin with p-aminobenzoic acid was carried out in an ethyl acetate/citric buffer biphasic system using laccase from the fungus Trametes hirsuta. The main reaction product yield was ~68 mol %. The pro
Autor:
Vyacheslav A. Chertkov, E. A. Zaitseva, Olga Morozova, M. E. Khlupova, Alexander I. Yaropolov, I. S. Vasil’eva, Galina Shumakovich, Alla K. Shestakova
Publikováno v:
Catalysts
Volume 11
Issue 5
Catalysts, Vol 11, Iss 639, p 639 (2021)
Volume 11
Issue 5
Catalysts, Vol 11, Iss 639, p 639 (2021)
Deep eutectic solvents (DESs) are an alternative to conventional organic solvents in various biocatalytic reactions. Meanwhile, there have been few studies reporting on synthetic reactions in DESs or DES-containing mixtures involving oxidoreductases.
Autor:
Alexander I. Yaropolov, I. S. Vasil’eva, Alla K. Shestakova, Olga Morozova, M. E. Khlupova, Galina Shumakovich, Vyacheslav A. Chertkov, Alexander V. Kisin
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 123:62-66
A laccase (LC) from the basidial fungus Trametes hirsuta has been used for the first time as a catalyst in dihydroquercetin (DHQ) oxidative polymerization. The conditions selected enabled good yields of DHQ oligomers, which were then analyzed using U
Publikováno v:
Chemistry of Heterocyclic Compounds. 48:412-421
An original method was developed for the synthesis of THF labeled selectively with the 13C isotope at the α-carbon atom. The effective reduction of symmetry brought about by the insertion of the isotopic label removes the excess degeneracy of the sp
Autor:
Alla K. Shestakova, I. S. Veselov, Vyacheslav A. Chertkov, Leyna Huynh, Andrey V. Samoshin, Vyacheslav V. Samoshin, G. V. Grishina
Publikováno v:
Tetrahedron Letters. 52:5375-5378
An acid-induced conformational flip of trans -3,4-diacetoxy-1-benzylpiperidine has been determined by 1 H NMR. It occurs while the apparent pH (pD) of the d 4 -methanol solution decreases from 6 to 3. Due to an intramolecular hydrogen bond, the confo