Výsledky vyhledávání - "A. S. Tolkunov"

Convenient synthesis of imidazo[1,5-a]pyrimidine derivatives and their unusual recyclization into 3H-imidazo[4,5-b]pyridine derivatives

Autor: Valery S. Tolkunov, Sergei V. Tolkunov, Olga V. Smirnova, Andrew S. Tolkunov

Publikováno v: Chemistry of Heterocyclic Compounds. 57:554-559

New derivatives of imidazo[1,5-a]pyrimidine have been synthesized by cyclization of in situ generated 1H-imidazol-4(5)-amine with 1,3-diketones or malondialdehyde derivatives. Utilization of asymmetrical 1,3-diketones leads to the formation of a mixt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b369981bee2e54ba7e258a24289342f5
https://doi.org/10.1007/s10593-021-02942-2

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Fused Diazepines. Synthesis of 2-Methyl-8-aryl-4,6-dihydro-5H-thieno[3',2':4,5]thieno[2,3-d][1,2]diazepin-5-ones

Autor: S. V. Tolkunov, A. V. Muratov, V. S. Tolkunov, A. B. Eresko

Publikováno v: Russian Journal of Organic Chemistry. 57:180-185

Heterocyclization of ethyl 2-acetyl(aroyl)-5-methylthieno[2,3-b]thiophene-3-acetates with hydrazine hydrate has been studied. A dependence of the reaction direaction on the nature of the substituent in the acyl fragment was established. The heterocyc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8c541553e8cd8afb8faeb30b99311d7
https://doi.org/10.1134/s107042802102007x

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Synthesis, NMR Spectroscopy, and Molecular Modeling of 2-Methyl-2,3,4,5-tetrahydro-1H-[1]benzothieno[2,3-c]azepine

Autor: E. V. Raksha, V. S. Tolkunov, A. A. Voitash, S. V. Tolkunov, A. V. Muratov, Yu. V. Berestneva, A. B. Eresko

Publikováno v: Russian Journal of Organic Chemistry. 56:1929-1936

A new synthetic approach to fused azepines was demonstrated on an example of the synthesis of 2-methyl-2,3,4,5-tetrahydro-1H-[1]benzothieno[2,3-c]azepine. The key stage of the synthesis is the formation of the azepine ring under the Eschweiler–Clar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eba7563cc936c07a48347d239c2a36a4
https://doi.org/10.1134/s1070428020110068

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1-Substituted 5,10-Dihydro[1,2]diazepino[4,5-b]indol-4(3H)-ones. Synthesis and Functionalization

Autor: S. V. Tolkunov, V. S. Tolkunov, A. B. Eresko, A. V. Muratov

Publikováno v: Russian Journal of Organic Chemistry. 55:345-350

A number of new 1-substituted 5,10-dihydro[1,2]diazepino[4,5-b]indole-4(3H)-ones were synthesized, and their structural modification was performed to obtain previously unknown amino and fused triazolo derivatives.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58f000612ab063503c887af8c71fc6b3
https://doi.org/10.1134/s1070428019030126

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Synthesis of 6-R-5-aryl-1,3-dioxo-1,2,3,4-tetrahydro-[1]benzothieno[3',2':4,5]pyrido[2,3-d]pyrimidin-5-ium salts and 6-R-5-aryl-5,6-dihydro[1]benzothieno-[3',2':4,5]pyrido[2,3-d]pyrimidine-1,3(2H,4H)-diones

Autor: V. S. Tolkunov, A. B. Eresko, S. V. Tolkunov, A. V. Mazepa

Publikováno v: Chemistry of Heterocyclic Compounds. 49:941-948

Acylation of 5-(benzothiophen-3-yl)pyrimidine-2,4,6(1H,3H,5H)-trione using acetic and propionic anhydride in the presence of 70% perchloric acid gave the 6-methyl(ethyl)-1,3-dioxo-1,2,3,4-tetra-hydro[1]benzothieno[3',2':4,5]pyrano[2,3-d]pyrimidin-5-i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5aed5b295f7bece27fec3229069d9a5f
https://doi.org/10.1007/s10593-013-1329-7

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Recyclization of benzofuropyridines by the action of activated alkynes in the synthesis of spiro[benzofuropyridines], representatives of a new class of acetylcholinesterase inhibitors

Autor: Tatiana N. Borisova, Cosimo Altomare, Leonid G. Voskressensky, Anna V. Listratova, S. A. Kovaleva, S. V. Tolkunov, V. S. Tolkunov, M. De Candia, Alexey V. Varlamov, A. B. Eresko

Publikováno v: Chemistry of Heterocyclic Compounds. 49:930-940

A study was carried out on the domino transformations of tetrahydrobenzofuro[2,3-c]pyridines and tetrahydrobenzofuro[3,2-c]pyridines by the action of activated alkynes in methanol and acetonitrile. This reaction is a new method for the synthesis of s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7ee1eae6593855ec3379d2d414c4840
https://doi.org/10.1007/s10593-013-1328-8

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