Search Results - "Mazepa, Alexander"

Interaction of Ninhydrin with N-Alkoxy-N’-arylureas and N-Alkoxy-N’-alkylureas. 1-Alkoxy-3-aryl(alkyl)-3a,8a-dihydroxy-1,3,3a,8a-tetrahydroindeno [1,2-d]imidazole-2,8-diones: Synthesis and Structure by Shtamburg, Vasiliy G., Shtamburg, Victor V., Anishchenko, Andrey A., Mazepa, Alexander V., Rusanov, Eduard B.

“…•We have proved that ninhydrin reacts with N-alkoxy-N’-arylureas regioselectively forming only one of the possible diastereomers of…”
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Nucleophilic substitution at nitrogen atom. N-Alkoxy-N-(dimethoxyphosphoryl)ureas, synthesis and structure by Shtamburg, Vasiliy G., Klots, Evgeniy A., Shtamburg, Victor V., Anishchenko, Andrey A., Shishkina, Svitlana V., Mazepa, Alexander V.

“…•A new way to receive the N-phosphorylureas synthetically has been found. N-Alkoxy-N-chloroureas react with trimethyl phosphite in ether forming…”
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A straightforward synthesis of 5-sulfonamidomethyl substituted 4,7-dihydroazolo[1,5-a]pyrimidines by Shvets, Elena H., Pidvorotnia, Anastasiia V., Kulyk, Olesia G., Mazepa, Alexander V., Kolosov, Maksim A.

“…4,7-Dihydroazolo[1,5-a]pyrimidin-5-ylmethanesulfonamides are side-products of the three-component Biginelli-like reaction of aminoazoles, aldehydes and…”
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Reaction of N,N‐Disubstituted Polyfluoroalkanethioamides with Diazomethane: Entry to New Thiirane Derivatives by Shermolovich, Yuriy G., Khyzhan, Aleksandr I., Rusanov, Eduard B., Mazepa, Alexander V., Rakipov, Ildar M., Mykhaylychenko, Sergiy S.

“…New fluorinated thiirane derivatives were formed as a result of the reaction between N,N‐disubstituted polyfluoroalkanethioamides and diazomethane. The…”
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α-Aminophosphonate derivatives of triethoxysilane for the synthesis of surface-modified silica by Kolosov, Maksim A., Chuyko, Yulia I., Kulyk, Olesia G., Mazepa, Alexander V., Zavarzin, Vladimir V., Kholin, Yuriy V.

“…A convenient synthetic route for the preparation of α-aminophosphonate derivatives of triethoxysilane, attractive precursors for silica surface…”
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Synthesis, cytotoxicity, antiviral activity and interferon inducing ability of 6-(2-aminoethyl)-6H-indolo[2,3-b]quinoxalines by Shibinskaya, Marina O., Lyakhov, Sergey A., Mazepa, Alexander V., Andronati, Sergey A., Turov, Alexander V., Zholobak, Nadezhda M., Spivak, Nikolay Ya

“…New 6-(2-aminoethyl)-6H-indolo[2,3-b]quinoxalines were synthesized with high yields using bromoethylisatin and 6-(2-bromoethyl)-6H-indolo[2,3-b]quinoxaline as…”
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Novel (2-amino-4-arylimidazolyl)propanoic acids and pyrrolo[1,2- c ]imidazoles via the domino reactions of 2-amino-4-arylimidazoles with carbonyl and methylene active compounds by Lipson, Victoria V, Pavlovska, Tetiana L, Svetlichnaya, Nataliya V, Poryvai, Anna A, Gorobets, Nikolay Yu, Van der Eycken, Erik V, Konovalova, Irina S, Shiskina, Svetlana V, Borisov, Alexander V, Musatov, Vladimir I, Mazepa, Alexander V

“…The unexpectedly uncatalyzed reaction between 2-amino-4-arylimidazoles, aromatic aldehydes and Meldrum's acid has selectively led to the corresponding…”
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Versatile approaches to a library of building blocks based on 5-acylthiazole skeleton by Kulyk, Olesia G., Biloborodov, Dmytro A., Cherevatenko, Maksim A., Shyriakin, Yevhen Y., Lyapunov, Alexander Yu, Mazepa, Alexander V., Vashchenko, Valerii V., Orlov, Valeriy D., Kolosov, Maksim A.

“…Thiazole derivatives represent an important class of azole heterocycles with a broad spectrum of biological activity and, therefore, the synthesis of these…”
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A synthesis of 6-functionalized 7-unsubstituted- and 7-methyl[1,2,4]azolo[1,5-a]pyrimidine derivatives by Kolosov, Maksim A., Shvets, Elena H., Manuenkov, Dmitriy A., Kulyk, Olesia G., Mazepa, Alexander V., Orlov, Valeriy D.

“…6-Functionalized 7-R-4,7-dihydro[1,2,4]azolo[1,5-a]pyrimidines (R = H or Me) were synthesized by Biginelli-like reaction of formaldehyde or acetaldehyde,…”
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Low Molecular Weight Supramolecular Allobetuline-, Cyclohexanol-, or Undecanol-Appended 1,2,3-Triazole-Based Gelators: Synthesis and Molecular Dynamics Simulation Study by Lipson, Victoria, Zhikol, Oleg, Shishkina, Svetlana, Semenenko, Alexander, Kulyk, Karina, Mateychenko, Pavel, Musatov, Vladimir, Mazepa, Alexander, Vakula, Vladimir, Borisov, Alexander, Kyrychenko, Alexander

“…Three novel isomeric supramolecular allobetuline-appended 1,2,3-triazole-based potential gelators and two model compounds with cyclohexanol or undecanol…”
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New ylidene and spirocyclopropyl derivatives of cholestanone and dehydroepiandrosterone series and their ability to induce cholesteric mesophase in nematic solvent by Semenenko, Alexander N., Babak, Nikolay L., Popov, Stepan S., Shishkina, Svitlana V., Mazepa, Alexander V., Lipson, Victoria V.

“…New ylidene and spirocyclopropyl derivatives of cholestanone and dehydroepiandrosterone series were synthesized and their structure was determined by X-ray…”
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1,3-Dipolar cycloaddition of (E)-4-(4-chlorophenyl)-2-oxobut-3-enic acid to 2-oxindole azomethine ylides by Pavlovska, Tetiana L., Lipson, Victoria V., Shishkina, Svetlana V., Musatov, Vladimir I., Borisov, Alexander V., Mazepa, Alexander V.

“…The α-keto carboxylic acid motif has been embedded to the novel spirooxindolepyrrolizidines via a three-component 1,3-dipolar cycloaddition of 2-oxindole…”
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Pictet–Spengler reaction in the synthesis of condensed benzodiazepines: synthesis of 11-hetaryl derivatives of 11,12-dihydroquinazolino[3,2-c][2,3]benzodiazepin-14(6H)-ones by Tolkunov, Andrey S., Mazepa, Alexander V., Palamarchuk, Gennadiy V., Shishkin, Oleg V., Sujkov, Sergey Yu, Bogza, Sergey L.

“…New derivatives of 11,12-dihydroquinazolino[3,2- c ][2,3]benzodiazepin-14(6 H )-one have been synthesized. 11-(2-Thienyl)- and 11-(5-R-2-furyl)-substituted…”
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Synthesis, crystal structure, and alkali metal picrate extraction capabilities of molecular clips based on diphenylglycoluril and benzocrown ethers by Bogaschenko, Tatiana Yu, Lyapunov, Alexander Yu, Kikot', Leonid S., Mazepa, Alexander V., Botoshansky, Mark M., Fonari, Marina S., Kirichenko, Tatiana I.

“…A convenient method for the synthesis of a series of molecular clips based on the diphenylglycoluril framework and benzocrown ether moieties by the reaction of…”
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Synthesis and structure of N-alkoxyhydrazines and N-alkoxy-N’,N’,N’-trialkylhydrazinium salts by Shtamburg, Vasiliy G., Shishkin, Oleg V., Zubatyuk, Roman I., Shtamburg, Victor V., Tsygankov, Alexander V., Mazepa, Alexander V., Kadorkina, Gulnara K., Kostyanovsky, Remir G.

“…New types of 1,1,1-trialkyl-2-alkoxyhydrazinium chlorides and N-alkoxyhydrazines were obtained by reactions of N-chloro-N-alkoxy- ureas with trimethylamine or…”
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1-Alkoxyamino-4-dimethylaminopyridinium derivatives as new representatives of O–N–N+ geminal systems and their structure by Shtamburg, Vasiliy G., Tsygankov, Alexander V., Shishkin, Oleg V., Zubatyuk, Roman I., Shtamburg, Victor V., Gerasimenko, Mikhail V., Mazepa, Alexander V., Kostyanovsky, Remir G.

“…N-Alkoxy-N-(4-dimethylaminopyridin-1-ium-1-yl)-substituted ureas, benzamides and N-tert-alkylamines were prepared by the reac tion of the corresponding…”
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Chiral ureas with two electronegative substituents at 1-N: An unusual case of coexisting pyramidal and almost planar 1-N atoms in the same crystal by Shishkin, Oleg V., Shtamburg, Vasiliy G., Zubatyuk, Roman I., Olefir, Dmitriy A., Tsygankov, Alexander V., Prosyanik, Alexander V., Mazepa, Alexander V., Kostyanovsky, Remir G.

“…XRD studies of structure of N‐acetoxy‐N‐methoxyurea and N,N‐bis(methoxycarbonyl)‐N‐methoxyimide have revealed that in N‐methoxy‐N‐X‐ureas (X = OAc, Cl, OMe,…”
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New approach to N, N-dialkoxy- N′-arylureas and N, N-dialkoxycarbamates by Shtamburg, Vasiliy G., Tsygankov, Alexander V., Gerasimenko, Mikhail V., Shishkin, Oleg V., Zubatyuk, Roman I., Mazepa, Alexander V., Kostyanovsky, Remir G.

“…Methanolysis of N-chloro- N-alkoxy- N’-arylureas in the presence of silver trifluoroacetate gives the corresponding N, N-dialkoxy- N’-arylureas, whereas…”
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Bis(oxofluorenediyl)oxacyclophanes: Synthesis, Crystal Structure and Complexation with Paraquat in the Gas Phase by Lukyanenko, Nikolay G., Kirichenko, Tatiana I., Lyapunov, Alexander Yu, Mazepa, Alexander V., Simonov, Yurii A., Fonari, Marina S., Botoshansky, Mark M.

“…The first three representatives of the new family of oxacyclophanes incorporating two 2,7‐dioxyfluorenone fragments, connected by [‐CH2CH2O‐]m spacers (m=2–4),…”
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Pyramidal nitrogen in the crystal of N-[(benzoyl)-(hydroxy)methyl]- N-benzyloxy- N’-(2-bromophenyl)urea by Kostyanovsky, Remir G., Shtamburg, Vasiliy G., Shishkin, Oleg V., Zubatyuk, Roman I., Shtamburg, Victor V., Anishchenko, Andrey A., Mazepa, Alexander V.

“…Phenylglyoxal reacts with N-benzyloxy- N’-(2-bromophenyl)urea forming N-[(benzoyl)(hydroxy)methyl]- N-benzyloxy- N’-(2-bromophenyl)urea. As it was found by XRD…”
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