Search Results - "Levina, I. I."

Expanding Stereoelectronic Limits of endo-tet Cyclizations: Synthesis of Benz[b]azepines from Donor–Acceptor Cyclopropanes by Vartanova, Anna E, Plodukhin, Andrey Yu, Ratmanova, Nina K, Andreev, Ivan A, Anisimov, Mikhail N, Gudimchuk, Nikita B, Rybakov, Victor B, Levina, Irina I, Ivanova, Olga A, Trushkov, Igor V, Alabugin, Igor V

“…The importance of intramolecular constraints in cyclic transition-state geometries is especially pronounced in n-endo-tet cyclizations, where the usual…”
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Dissolution Efficiency of Wood Pulp in Ionic Liquids Based on 1-Butyl-3-Methylimidazolium with Different Anions by Mikhaleva, M., Vedenkin, A., Usachev, S., Levina, I.

“…The synthesis of ionic liquids based on 1-butyl-3-methylimidazolium with different anions—Cl – , Br – and CH 3 C(O)O – was performed. [BMIm]Cl and [BMIm]Br…”
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Ring Opening of Donor–Acceptor Cyclopropanes with Cyanide Ion and Its Surrogates by Boichenko, Maksim A, Andreev, Ivan A, Chagarovskiy, Alexey O, Levina, Irina I, Zhokhov, Sergey S, Trushkov, Igor V, Ivanova, Olga A

“…A straightforward method for ring opening of donor–acceptor cyclopropanes with trimethylsilyl cyanide as a surrogate of cyanide ion in the presence of…”
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Immunomodulatory effects of progesterone and selective ligands of membrane progesterone receptors by Polikarpova, A.V., Levina, I.S., Sigai, N.V., Zavarzin, I.V., Morozov, I.A., Rubtsov, P.M., Guseva, A.A., Smirnova, O.V., Shchelkunova, T.A.

“…•The immunomodulatory effects of new ligands of the mPR were similar to the action of progesterone.•Progesterone and its analogues acted differentially on…”
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Optimization of the synthesis of 21-benzylidene-substituted steroids and pitfalls of the Claisen-Schmidt condensation by Knyazev, V. V., Kuznetsov, Yu. V., Tserfas, M. O., Kolotyrkina, N. G., Zavarzin, I. V., Levina, I. S.

“…Data on the influence of solvents, ratios and nature of reagents on the distribution of typical impurities and yields of target products of the reaction of…”
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Synthesis of (Het)aryl 2-(2-hydroxyaryl)cyclopropyl Ketones by Fadeev, Alexander A, Chagarovskiy, Alexey O, Makarov, Anton S, Levina, Irina I, Ivanova, Olga A, Uchuskin, Maxim G, Trushkov, Igor V

“…A simple general method for the synthesis of 1-acyl-2-( -hydroxyaryl)cyclopropanes, which belong to the donor-acceptor cyclopropane family, has been developed…”
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Convenient Synthesis of Functionalized Cyclopropa[ c ]coumarin-1a-carboxylates by Ivanova, Olga A, Andronov, Vladimir A, Levina, Irina I, Chagarovskiy, Alexey O, Voskressensky, Leonid G, Trushkov, Igor V

“…A simple method has been developed for the synthesis of cyclopropa[ ]coumarins, which belong to the donor-acceptor cyclopropane family and, therefore, are…”
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New azo dyes based on 8-methoxy-2,2,4-trimethyl-1,2-dihydroquinoline and N-substituted tetrazoles by Khodot, E. N., Golovina, G. V., Timokhina, E. N., Samigullina, A. I., Levina, I. I., Kuzmin, V. A., Nekipelova, T. D.

“…A new procedure for the synthesis of azo dyes based on 8-methoxy-2,2,4-trimethyl-1,2-dihydroquinoline and 1- or 2-substituted tetrazoles results in a crucial…”
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Spectral Study of the Structure and Properties of Complexes of Unsubstituted Indoline Spiropyran with Aluminum Ions by Belikov, N. E., Lukin, A. Yu, Varfolomeev, S. D., Levina, I. I., Petrovskaya, L. E., Demina, O. V., Barachevsky, V. A., Khodonov, A. A.

“…The methods of absorption electronic and NMR spectroscopy were used to study the processes of complexation during the interaction of molecules of unsubstituted…”
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Synthesis of 19-hydroxypregn-4-en-20-one and 19-hydroxy-5β-pregn-3-en-20-one that selectively bind to membrane progesterone receptors, and assessment of their immunomodulatory effects by Levina, I. S., Shchelkunova, T. A., Polikarpova, A. V., Kuznetsov, Yu. V., Zavarzin, I. V.

“…A new approach to the synthesis of isomeric 19-hydroxypregn-4-en-20-one ( 1 ) and 19-hydroxy-5β-pregn-3-en-20-one ( 2 ), the selective ligands of membrane…”
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Kinetics and Mechanism of Synthesis of Carboxyl-Containing N-Vinyl-2-Pyrrolidone Telehelics for Pharmacological Use by Kuskov, Andrey N., Luss, Anna L., Gritskova, Inessa A., Shtilman, Mikhail I., Motyakin, Mikhail V., Levina, Irina I., Nechaeva, Anna M., Sizova, Oksana Yu, Tsatsakis, Aristidis M., Mezhuev, Yaroslav O.

“…It was found that sulfanylethanoic and 3-sulfanylpropanoic acids are effective regulators of molecular weight with chain transfer constants of 0.441 and 0.317,…”
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Key structures in the synthesis of steroid antitumor agents. Methods for upbuilding the 17β-pregnane side chain of 3-methoxy-19-norpregna-1,3,5(10)-trien-20-ones with and without an additional 16α,17α-carbocycle by Tserfas, M. O., Kuznetsov, Yu. V., Knyazev, V. V., Levina, I. S., Zavarzin, I. V.

“…Methods for extending the side chain of 20-oxopregnanes were summarized. The possibilities of alkylation of 3-methoxy-19-norpregna-1,3,5(10)-trien-20-one and…”
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Investment models for enterprise architecture (EA) and IT architecture projects within the open innovation concept by Ilin, Igor V, Levina, Anastasia I, Dubgorn, Alissa S, Abran, Alain

“…Information technologies (IT) architecture and infrastructure is a significant cost item, especially for enterprises with complex production infrastructure and…”
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Selective synthesis of the two main progesterone metabolites, 3α-hydroxy-5α-pregnanolone (allopregnanolone) and 3α-hydroxypregn-4-en-20-one, and an assessment of their effect on proliferation of hormone-dependent human breast cancer cells by Tserfas, M. O., Levina, I. S., Kuznetsov, Y. V., Scherbakov, A. M., Mikhaevich, E. I., Zavarzin, I. V.

“…A directed synthesis of two progesterone metabolites, allopregnanolone and 3a-hydroxy-pregn-4-en-20-one, from Δ 16 -pregnanolone and progesterone,…”
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Key structures for the synthesis of steroid antitumor agents. Synthesis of 16-dehydro-17-carbaldehydes of 13β- and 13α-estratriene series by Tserfas, M. O., Kuznetsov, Yu. V., Levina, I. S., Zavarzin, I. V.

“…A convenient preparative synthesis of 3-methoxyestra-1,3,5(10),16-tetraene-17-carb-aldehyde and its epimeric 13α-analog, the key structures in the synthesis of…”
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Kinetics of Synthesis of N-Vinyl-2-Pyrrolidone Oligomers with Amino End Groups for Stabilization of Aqueous Gossypol Dispersions by Kuskov, A. N., Motyakin, M. V., Levina, I. I., Nechaeva, A. M., Artyukhov, A. A., Shtilman, M. I., Mezhuev, Ya. O.

“…By radical telomerization of N -vinyl-2-pyrrolidone in the presence of 2-aminoethanethiol an oligomer containing amino end groups and capable of stabilizing…”
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Dichloromethane as solvent and reagent: a case study of photoinduced reactions in mixed phosphonium‐iodonium ylide by Levina, Irina I., Klimovich, Olga N., Vinogradov, Dmitrii S., Podrugina, Tatyana A., Bormotov, Denis S., Kononikhin, Alexey S., Dement'eva, Olga V., Senchikhin, Ivan N., Nikolaev, Evgeny N., Kuzmin, Vladimir A., Nekipelova, Tatiana D.

“…Several years ago the photoinduced reaction of mixed phosphonium‐iodonium ylides (1) with acetylenes (2) to give λ5‐phosphinolines (3) and substituted furans…”
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An efficient synthesis of 3-methoxy-19-norpregna-1,3,5(10),16-tetraen-20-one by Kuznetsov, Yu. V., Levina, I. S., Shashkov, A. S., Zavarzin, I. V.

“…An efficient preparative method for the synthesis of 3-methoxy-19-norpregna-1,3,5(10), 16-tetraen-20-one was suggested. This compound is a key intermediate…”
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Synthesis of 4-hetero-16α,17α-cyclohexanopregnanes and evaluation of their cytotoxicity against the HeLa cell line by Levina, I. S., Kulikova, L. E., Semeikin, A. V., Zavarzin, I. V.

“…The oxidation of the ring A of 16α,17α-cyclohexanoprogesterone gave 5-oxo-A-nor-3,5-secopregnan-3-oic acid. The subsequent ring A closure in the latter…”
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Selection of progesterone derivatives specific to membrane progesterone receptors by Polikarpova, A. V., Maslakova, A. A., Levina, I. S., Kulikova, L. E., Kuznetsov, Y. V., Guseva, A. A., Shchelkunova, T. A., Zavarzin, I. V., Smirnova, O. V.

“…The search of selective agonists and antagonists of membrane progesterone receptors (mPRs) is a starting point for the study of progesterone signal…”
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