Zobrazeno 1 - 10 of 19 pro vyhledávání: '"Aleksandr P Yengoyan"'
1
Akademický článek
Ultrasound-assisted green syntheses of novel pyrimidine derivatives and their comparison with conventional methods
Autor: Vergush A. Pivazyan, Emma A. Ghazaryan, Armen V. Karapetyan, Roza S. Shainova, Siranush V. Harutyunyan, Asya S. Vorskanyan, Aleksandr P. Yengoyan, Tiruhi A. Gomktsyan
Publikováno v: Journal of Saudi Chemical Society, Vol 27, Iss 3, Pp 101628- (2023)
Ultrasound-assisted green syntheses of novel potentially bioactive pyrimidine derivatives have been carried out. The same compounds were obtained by conventional methods of synthesis, and the reaction times and yields of final products obtained by th
Externí odkaz: https://doaj.org/article/1ed104bd41b24049879266bd07d3dbcf
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2
Akademický článek
Synthesis and Growth Stimulant Properties of 2-Acetyl-3,7-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one Derivatives
Autor: Vergush A. Pivazyan, Emma A. Ghazaryan, Roza S. Shainova, Rafael A. Tamazyan, Armen G. Ayvazyan, Aleksandr P. Yengoyan
Publikováno v: Journal of Chemistry, Vol 2017 (2017)
A convenient, accessible, and high yield method for preparing of 6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (1) by treatment of acetoacetic acid ethyl ester with thiourea in sodium methylate was developed. The alkylation of the latter with 3-ch
Externí odkaz: https://doaj.org/article/e024f4321c1c42a7835336906fc9b65c
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3
Synthesis and Preliminary Biological Properties Assessment of Novel 2-S-, 4-, 5-Substituted and Bicyclic Derivatives of 6-Methylpyrimidine-4-ol
Autor: Aleksandr P. Yengoyan, Zhermen A. Azaryan, Vergush A. Pivazyan, A. G. Ayvazyan, Rafael A. Tamazyan, Emma A. Ghazaryan
Publikováno v: Letters in Organic Chemistry. 17:149-156
A series of novel 2-S-, 4-, 5-substituted and bicyclic 6-methylpyrimidine-4-ol derivatives including pyrazole, 1,2,4-triazole and pyridazine moieties in the molecule were synthesized by accessible and efficient methods. Thiopyrazolyl derivatives were
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a4b91ed35655a50e245651aaa4abc2c
https://doi.org/10.2174/1570178616666190411110415
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4
Synthesis and biological evaluation of 3-O-substituted 1-benzyl-6-oxo-1,6-dihydropyridazine derivatives
Autor: Aleksandr P Yengoyan, Tiruhi A Gomktsyan, Armen V Karapetyan, Roza S Shainova
Publikováno v: Journal of Chemical Research. 43:352-358
On the basis of 2-benzyl-6-hydroxypyridazin-3(2 H)-one, a series of its novel O-substituted (including 6-(1,3,5-triazin-2-yl)oxy) derivatives is prepared. It is proven that the substitution reactions in the initial compound occur mainly at the oxygen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e73468b004aa1f2199c8339272428107
https://doi.org/10.1177/1747519819866402
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7
Synthesis and Growth Stimulant Properties of 2-Acetyl-3,7-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one Derivatives
Autor: A. G. Ayvazyan, Roza S. Shainova, Emma A. Ghazaryan, Aleksandr P. Yengoyan, Vergush A. Pivazyan, Rafael A. Tamazyan
Publikováno v: Journal of Chemistry, Vol 2017 (2017)
A convenient, accessible, and high yield method for preparing of 6-methyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (1) by treatment of acetoacetic acid ethyl ester with thiourea in sodium methylate was developed. The alkylation of the latter with 3-ch
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef49925005ec936aefd7a22f4adbb77c
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8
Synthesis of Novel 2-Amino-(2-thioxo-3-alkyl-4-methyl-3H-thiazol-5-yl)-[1,3,4]thiadiazole Derivatives and Their Growth Stimulant Activity
Autor: Vergush A. Pivazyan, Aram M. Knyazyan, Siranush V. Harutyunyan, Karine A. Eliazyan, Emma A. Ghazaryan, Aleksandr P. Yengoyan
Publikováno v: Journal of Heterocyclic Chemistry. 50:1281-1289
On the base of synthesized 2-amino and 2-ethylamino-(2-thioxo-3-alkyl-4-methyl-3H-thiazol-5-yl)-[1,3,4]thiadiazoles, their alkyl, acetyl, and alkylacetylamino derivatives are obtained. The alkylation of 2-ethylamino derivatives can occur at both exo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24ea55f27fd67ebd1a7ddf582448c3e6
https://doi.org/10.1002/jhet.1667
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9
Synthesis of novel 2-arylsulfonylimino-3,4- dimethyl-5-(5-S-substituted [1,3,4]oxadiazol- 2-yl)-2,3-dihydrothiazole derivatives and their plant growth stimulant activity
Autor: Vergush A. Pivazyan, Aleksandr P. Yengoyan, Karine A. Eliazyan, Ruzanna S. Hakobyan, Emma A. Ghazaryan, Siranush V. Harutyunyan
Publikováno v: hc. 19:275-280
2-Arylsulfonylimino-3,4-dimethyl-2,3-dihydrothiazole-5-carboxylic acid hydrazides 2 were obtained from corresponding 2-arylsulfonylimino-4-methyl-2,3-dihydrothiazole-5-carboxylic acid ethyl esters 1 in a two-step synthesis. Heterocyclization of the h
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3143a20bfa3d7b55f5316e7ca3d7f44b
https://doi.org/10.1515/hc-2013-0055
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10
Synthesis and transformations of 1-[2-(toluene-4-sulfonamido)ethyl]thiourea
Autor: Aleksandr P. Yengoyan, Emma A. Ghazaryan, Vergush A. Pivazyan, Ruzanna S. Hakobyan, Karine A. Eliazyan
Publikováno v: hc. 19:121-124
Readily available 2-(toluene-4-sulfonylamino)ethylamine is a convenient starting material for a two-step synthesis of 1-[2-(toluene-4-sulfonamido)ethyl]thiourea (2). Heterocyclization of the thiourea moiety in 2 furnished a thiazole derivative 3 whic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8072dc8f64d065f56270e751e6ecfb79
https://doi.org/10.1515/hc-2013-0005
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