Výsledky vyhledávání - "V. F. Anufriev"

Synthesis of Spinochrome D, A Metabolite of Various Sea-Urchin Species

Autor: O. P. Shestak, N. N. Balaneva, V. F. Anufriev, Vyacheslav L. Novikov

Publikováno v: Chemistry of Natural Compounds. 52:213-217

The sea-urchin metabolite spinochrome D (1) was synthesized in 58% overall yield via oxidation of 2,3-dichloronaphthazarin (13) into 2-hydroxy-6,7-dichloronaphthazarin (14), O-methylation of 14, nucleophilic substitution by MeO groups of the Cl atoms

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e7b32f89b22b0fb1458700fa949f3ac
https://doi.org/10.1007/s10600-016-1597-4

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Chemistry of naphthazarin derivatives. Transetherification selectivity of naphthazarin methoxy derivatives

Autor: V. F. Anufriev, Vladimir A. Denisenko, N. D. Pokhilo

Publikováno v: Russian Journal of Organic Chemistry. 50:647-653

Transetherification of naphthazarin methoxy derivatives in basic conditions occurs only with primary monohydric alcohols. 1,3-Butanediol due to the assistance of the hydroxy group at the C1 atom gives rise to a mixture of transetherification products

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::11455035f98035c6335c56697ab41540
https://doi.org/10.1134/s1070428014050054

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Conversion of 2,3-dihydroxynaphthazarins to isoquinoline-1,3,4(2H)-trione derivatives

Autor: Vladimir A. Denisenko, V. F. Anufriev, Valery P. Glazunov, Galina I. Melman, Ksenia L. Borisova

Publikováno v: Russian Chemical Bulletin. 61:616-622

6(7)-(Di)alkyl- and 6(7)-(di)alkoxy derivatives of 2,3-dihydroxynaphthazarin were converted to 5,8-dihydroxyisoquinoline-1,3,4(2H)-trione derivatives under amination reaction conditions.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c817382c60117e4bbb85f289eaca9678
https://doi.org/10.1007/s11172-012-0089-3

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Synthesis and cytotoxic activity of azidonaphthazarins

Autor: V. F. Anufriev, M. I. Kiseleva, N. D. Pokhilo

Publikováno v: Pharmaceutical Chemistry Journal. 45:522-525

Preparative methods have been developed for the synthesis of azidonaphthazarins. It is established that 2-hydroxy- and 2-alkoxy-6,7-dichloronaphthazarins react regiospecifically with sodium azide in MeOH to yield the corresponding 6-azido derivatives

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2eb6e0e1d5dc935a1f20c45e9535a0aa
https://doi.org/10.1007/s11094-011-0671-2

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Chlorination of 2,3,6-trialkyl-5,8-dihydroxy-1,4-naphthoquinones with HCl-MnO2 in acetic acid. effective transformation of 2,3,6-trialkyl-2,3,7-trichloro-1,2,3,4-tetrahydronaphthalene-1,4-diones into 7-chloro-2,3,6-trialkyl-5,8-dihydroxy-1,4-naphthoquinones

Autor: V. A. Denisenko, N. S. Polonik, Sergey G. Polonik, V. F. Anufriev, O. P. Moiseenko

Publikováno v: Russian Journal of Organic Chemistry. 47:1045-1049

Chlorination of 2,3,6-trialkyl-5,8-dihydroxy-1,4-naphthoquinones with HCl-MnO2 in acetic acid gave a mixture of 7-chloro-2,3,6-trialkyl-5,8-dihydroxy-1,4-naphthoquinones and 2,3,7-trichloro-2,3,6-trialkyl-1,2,3,4-tetrahydronaphthalene-1,4-diones, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9ba947e11baa4916dbd2570bfe840b54
https://doi.org/10.1134/s1070428011070128

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Synthesis of 6,8,9-Trihydroxy-2-Methyl-2H-Naphtho [2,3-b]Pyran-5,10-Dione, a Pigment of Echinothrix diadema, and Its Analogs

Autor: N. D. Pokhilo, G. I. Mel’man V. P. Glazunov, V. F. Anufriev

Publikováno v: Chemistry of Natural Compounds. 50:417-419

6,8,9-Trihydroxy-2-methyl-2H-naphtho[2,3-b]pyran-5,10-dione, a pigment of Echinothrix diadema, was synthesized. It existed as a mixture of two tautomers in CHCl3 solution according to IR spectroscopy. Its analogs 6,9-dihydroxy-2-methyl-2H-naphtho[2,3

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83a6f5d3118025203e63999d278974e6
https://doi.org/10.1007/s10600-014-0974-0

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Synthesis of 2,2’-(ethane-l,l-diyl)bis(3,5,6,7,8-pentahydroxy-l,4-naphthoquinone), a metabolite of the sea urchins Spatangus purpureus, Strongylocentrotus intermedius, and S. droebachiensis

Autor: Dmitry N. Pelageev, V. F. Anufriev, M. N. Panchenko, N. D. Pokhilo

Publikováno v: Russian Chemical Bulletin. 59:1472-1476

A key step in the synthesis of 2,2’-(alkane-l,l-diyl)bis(3,5,6,7,8-pentahydroxy-l,4-naphthoquinones) is an acid-catalyzed condensation of 2-hydroxynaphthazarins, the products of the retro aldol reaction of 2-hydroxy-3-(l-hydroxyalkyl)naphthazarins,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::426a1be31c2ed5c75735018c71d9b26f
https://doi.org/10.1007/s11172-010-0265-2

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Conformational in the IR spectra of 1′-hydroxyethyl derivatives of 1,4-benzo-and 5,8-dihydroxy-1,4-naphthoquinones: A DFT study

Autor: Valery P. Glazunov, V. F. Anufriev, D. V. Berdyshev, N. D. Pokhilo

Publikováno v: Russian Chemical Bulletin. 58:663-674

Detailed conformational analysis of the molecule of ′-hydroxyethyl-1,4-benzoquinone (3) by the B3LYP/cc-pVTZ method revealed predominance of rotamers with the free 1′-OH group in the gas phase. B3LYP/cc-pVTZ calculations with inclusion of solvent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::45a210e678ed083b4b2abbe90a069e67
https://doi.org/10.1007/s11172-009-0077-4

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