S 83 Stereoselective hetero-Diels–Alder reaction of 3-nitro-2-trihalomethyl-2H-chromenes with 2,3-dihydrofuran and ethyl vinyl ether under solvent-free conditions [Text] / V. Yu. Korotaev, V. Ya. Sosnovskikh, M. A. Barabanov, E. S. Yasnova, M. A. Ezhikova, M. I. Kodess, P. A. Slepukhin // Tetrahedron. - 2010. - Vol. 66, № 6. - P1404-1409 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 3-Nitro-2-trifluoro(trichloro)methyl-2H-chromenes undergo heterodiene cycloaddition to 2,3-dihydrofuran and ethyl vinyl ether under solvent-free conditions producing novel cyclic nitronates with high stereoselectivity and in good yields. 3,6-Dinitro-2-trifluoromethyl-2H-chromene reacts with two molecules of ethyl vinyl ether to give the tandem [4+2]/[3+2] cycloaddition adduct in 48% yield. The stereochemistry of the products was established based on 2D COSY, NOESY, HSQC, and HMBC experiments and an X-ray diffraction study \\\\Expert2\\nbo\\Tetrahedron\\2010, v.66, N 6, p.1404.pdf |
S 83 Stereoselective tandem [4 + 2]/[3 + 2] cycloaddition reactions of 3,3,3-trichloro(trifluoro)-1-nitropropenes and 2,3-dihydrofuran [Electronic resource] / V. Yu. Korotaev, V. Ya. Sosnovskikh, M. A. Barabanov, A. Yu. Barkov, M. I. Kodess // Mendeleev Communications. - 2010. - Vol. 20, № 1. - P17-19 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The first example of the domino hetero-Diels–Alder/1,3-dipolar cycloaddition, in which 3,3,3-trichloro(trifluoro)-1-nitropropenes act as both the heterodiene and the dipolarophile in the reaction with 2,3-dihydrofuran, is described. The trichloromethylated nitroolefin gave tricyclic nitroso acetal as a single regio- and stereoisomer, while the trifluoromethylated derivative afforded a 3:1 mixture of two regioisomeric cycloadducts \\\\Expert2\\nbo\\Mendeleev Communications\\2010, v.20, p.17.pdf |
U 52 Unexpected dimerization of 5,7-dimethyl-2-trifluoromethyl-8-azachromone induced by hydrogen sulfide [Electronic resource] / M. A. Barabanov, V. Ya. Sosnovskikh, V. S. Moshkin, M. I. Kodess // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 11. - P2094-2097. - Bibliogr. : p. 2097 (18 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Depending on the reaction conditions, the reaction of 5,7-dimethyl-2-trifluoromethyl-8-azachromone with hydrogen sulfide afforded cyclic and linear dimers with the S-S bond. The regio- and stereochemistry of the reaction products were determined by 1H and 13C NMR spectroscopy \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (11), 2094-2097.pdf |
S 98 Synthesis of a new class of carbinol linked bis-heterocycles via the reaction of 2-(trifluoroacetyl)chromones with indoles and pyrroles / A. V. Safrygin, R. A. Irgashev, M. A. Barabanov, V. Ya. Sosnovskikh // Tetrahedron. - 2016. - Vol. 72. - С. 227-233. - Bibliogr. : p. 233 (25 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SYNTHESIS -- CARBINOL LINKED BIS-HETEROCYCLES -- INDOLES \\\\expert2\\nbo\\Tetrahedron\\2016, v. 72 , p. 227-233.pdf |
B 24 Barabanov, M. A. Biological activity and synthesis of 5,6-dihydroxyindole-2-carboxylic acid – biosynthetic precursor of melanins (microreview) / M. A. Barabanov, G. S. Martyanov, A. V. Pestov // Chemistry of Heterocyclic Compounds. - 2021. - Vol. 57, № 4. - P417-419
Аннотация: The microreview considers the biological activity and methods of obtaining natural melanin pigments and their biosynthetic precursor 5,6-dihydroxyindole-2-carboxylic acid. The key methods for the synthesis of 5,6-dihydroxyindole-2-carboxylic acid, published over the past 8 years (20122020), are presented. |
New epoxy resin polymerization catalysts based on N,N-dimethylaminoalkylamides of perfluoroalkanoic acids / V. A. Osipova, T. I. Gorbunova, M. I. Barabanov [et al.] // Russian Journal of Applied Chemistry. - 2022. - Vol. 95, № 1. - P53-58 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
Pharmacological characterization of a novel putative nootropic beta-alanine derivative, MB-005, in adult zebrafish / T. O. Kolesnikova, K. A. Demin, A. V. Kalueff [et al.] // Journal of Psychopharmacology. - 2022. - Vol. 36, № 7. - P779-902 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Cognitive deficits represent an urgent biomedical problem, and are commonly reduced by nootropic drugs. Animal models, including both rodents and zebrafish, offer a valuable tool for studying cognitive phenotypes and screening novel nootropics. Beta-alanine and its derivatives have recently been proposed to exert nootropic activity. |