Zobrazeno 1 - 10 of 16 pro vyhledávání: '"R. Ya. Okmanov"'
1
Akademický článek
Withanolides from Physalis angulata L.
Autor: R. Ya. Okmanov, M. M. Makhmudova, I. D. Bobaev, B. Tashkhodjaev
Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 77, Iss 8, Pp 804-808 (2021)
The compounds (17S,20R,22R,24R,25S)-5β,6β:20,24-diepoxy-4β,25-dihydroxy-1-oxowith-2-en-26,22-olide and (20R,22R)-5α,14α,20-Trihydroxy-1-oxo-6α,7α-epoxywitha-2-enolide were isolated from a chloroform extract of the aerial parts of Physalis angu
Externí odkaz: https://doaj.org/article/32f05953a1fa4ba7b1a05e064c9fc910
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2
Akademický článek
1-Isobutyl-8,9-dimethoxy-3-phenyl-5,6-dihidroimidazo[5,1-a]isoquinolin-2-ium chloride
Autor: R. Ya. Okmanov, D. B. Tukhtaev, A. Sh. Saidov, B. Tashkhodjaev
Publikováno v: IUCrData, Vol 4, Iss 10, p x191390 (2019)
The molecular salt, C23H26N2O2+·Cl−, was obtained from 1-isobutyl-8,9-dimethoxy-3-phenyl-5,6-dihydroimidazo[5,1-a]isoquinoline, which was synthesized by cyclocondensation of α-benzoylamino-γ-methyl-N-[2-(3,4-dimethoxyphenyl)ethyl]valeramide in t
Externí odkaz: https://doaj.org/article/2c0726e219594c948f095e9520691967
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3
Akademický článek
N-(5-Benzylsulfanyl-1,3,4-thiadiazol-2-yl)-2-(piperidin-1-yl)acetamide
Autor: D. S. Ismailova, R. Ya. Okmanov, A. A. Ziyaev, Kh. M. Shakhidoyatov, B. Tashkhodjaev
Publikováno v: Acta Crystallographica Section E, Vol 70, Iss 3, Pp o241-o241 (2014)
The title compound, C16H20N4OS2, was synthesized by the reaction of 2-benzylsulfanyl-5-chloroacetamido-1,3,4-thiadiazole and piperidine in a 1:2 ratio. The planes of the acetamide and 1,3,4-thiadiazole units are twisted by 10.8 (4)°. The thiadiazole
Externí odkaz: https://doaj.org/article/06f636d27cea49299df1854ad34a7564
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4
Akademický článek
2-n-Butyl-6-chloro-1-(2,4-dimethylphenylsulfonyl)-1H-benzimidazole–2-n-butyl-5-chloro-1-(2,4-dimethylphenylsulfonyl)-1H-benzimidazole (0.759/0.241)
Autor: K. B. Abdireymov, N. S. Mukhamedov, R. Ya. Okmanov, M. J. Ayimbetov, B. Tashkhodjaev
Publikováno v: Acta Crystallographica Section E, Vol 67, Iss 12, Pp o3345-o3346 (2011)
The title compound, 0.759C19H21ClN2O2S·0.241C19H21ClN2O2S, was synthesized by arylsulfonylation of 2-n-butyl-5-chloro-1H-benzimidazole in the presence of triethylamine. The crystal structure is composed of two molecules, 2-n-butyl-6-chloro-1-(2,4-di
Externí odkaz: https://doaj.org/article/5aac7e671a754d378008ecf2f1574eeb
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6
Withanolides from Physalis angulata L
Autor: M M Makhmudova, Bakhodir Tashkhodjaev, R. Ya. Okmanov, I D Bobaev
Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 77, Iss 8, Pp 804-808 (2021)
Acta Crystallographica Section E: Crystallographic Communications
The chemical structures of two withanolides, isolated from the leaves of Physalis angulata by column chromatography, were studied. The isolated compounds are (17S,20R,22R,24R,25S)-5β,6β:20,24-diep­oxy-4β,25-dihy­droxy-1-oxowith-2-en-26,22-olide
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d006a6448b6896e2579084c7155fb189
http://scripts.iucr.org/cgi-bin/paper?S205698902100709X
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7
Benzazoles: II. Synthesis and arenesulfonylation of 1-methyl-1H-benzimidazol-2-amine
Autor: N. S. Mukhamedov, R. Ya. Okmanov, F. B. Zhonkhozhaeva, T. N. Kaipnazarov, G. E. Berdimbetova
Publikováno v: Russian Journal of Organic Chemistry. 49:1744-1747
The reaction of 1-methyl-1H-benzimidazol-2-amine with arenesulfonyl chlorides in the presence of triethylamine afforded 1-arenesulfonyl-3-methyl-2,3-dihydro-1H-benzimidazol-2-imines instead of expected N-(1-methyl-1H-benzimidazol 2-yl)arenesulfonamid
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c412991f43233d25a05264338a7da432
https://doi.org/10.1134/s1070428013120063
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8
Benzazoles. 6*. Synthesis and Arylsulfonation of 2-Hydroxymethylbenzimidazole
Autor: Kh. M. Shakhidoyatov, R. Ya. Okmanov, B. Tashkhodzhaev, M. Zh. Aiymbetov, N. S. Mukhamedov, K. B. Abdireimov
Publikováno v: Chemistry of Heterocyclic Compounds. 49:760-765
2-Hydroxymethylbenzimidazole was synthesized by the cyclization of o-phenylenediamine with glycolic acid. Its interaction with arylsulfonyl chlorides in the presence of triethylamine showed that in addition to the expected 1-arylsulfonyl-2-hydroxymet
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5fbf7c457367e2920d3ffa3168ac3c85
https://doi.org/10.1007/s10593-013-1307-0
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9
Synthesis and structure of 6-bromo-4-hydroxy-2,3-tetramethylene-3,4-dihydroquinazoline and its mixed crystal with 4-hydroxy-2,3-tetramethylene-3,4-dihydroquinazoline
Autor: N. I. Mukarramov, B. Tashkhodzhaev, F. R. Utaeva, R. Ya. Okmanov, Z. M. Khakimova, Kh. M. Shakhidoyatov, Kambarali K. Turgunov
Publikováno v: Chemistry of Natural Compounds. 45:854-858
Bromination of the alkaloid 2,3-tetramethylene-3,4-dihydroquinazoline by N-bromosuccinimide was studied. It was shown that either 4-hydroxy-2,3-tetramethylene-3,4-dihydroquinazoline or 6-bromo-4-hydroxy-2,3tetramethylene-3,4-dihydroquinazoline was fo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88c6765ee93ab3d4e7dc23dc86c33663
https://doi.org/10.1007/s10600-010-9491-y
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