Results 111 to 120 of about 451 (159)
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Russian Chemical Bulletin, 1994
(2-Bromo-2-hydroxyiminoacetyl)furazans and -furoxans were synthesized by nitrosation of bromoacetylfurazans and -furoxans with nitrosylsulfuric acid in conc. H2SO4 An efficient method for preparing the previously unknown 3,4-bis[furazanoyl(or furoxanoyl)]furoxans has been proposed; it consists of the reaction of acetylfurazans and acetylfuroxans with a
Nina N Makhova +2 more
exaly +2 more sources
(2-Bromo-2-hydroxyiminoacetyl)furazans and -furoxans were synthesized by nitrosation of bromoacetylfurazans and -furoxans with nitrosylsulfuric acid in conc. H2SO4 An efficient method for preparing the previously unknown 3,4-bis[furazanoyl(or furoxanoyl)]furoxans has been proposed; it consists of the reaction of acetylfurazans and acetylfuroxans with a
Nina N Makhova +2 more
exaly +2 more sources
Thiol-mediated generation of nitric oxide accounts for the vasodilator action of furoxans
Biochemical Pharmacology, 1992 Furoxans (1,2,5-oxadiazole-2-oxides) are widely used in organic chemistry as intermediate compounds for the synthesis of various heterocycles. Despite the fact that some furoxans have been found to possess remarkable biological activities, up to now no ...
Martin Feelisch, E Noack
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Furoxans and tocopherol analogs–furoxan hybrids as anticancer agents
Anti-Cancer Drugs, 2019We determined the antiproliferative and nitric oxide (NO)-releasing activity of furoxans and tocopherol analogs-furoxan hybrids by tandem Griess/resazurin/sulforhodamin B assays in HeLa, 253J, T24, and HepG2 cancer cells. In addition, to investigate the NO implications in the inhibition of cell growth, cells were pretreated with the NO scavenger ...
Florencia, Pérez +6 more
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Unsymmetrically Substituted Furoxans. 10. Acetyl-methyl-furoxans
HETEROCYCLES, 1985Par action de N 2 O 3 sur le butene-3one-2, synthese des 2 acetyl methyl furoxannes isomeres; discussion de leur structure; cinetique de l'isomerisation thermique de l'isomere methyl-3 en isomere methyl ...
Alberto Gasco +3 more
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Journal of Materials Chemistry A, 2020
Dinitromethyl groups form an unstable nitrile oxide and its dipole isomer which cyclize to a furoxan ring.
Qiong Yu +5 more
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Dinitromethyl groups form an unstable nitrile oxide and its dipole isomer which cyclize to a furoxan ring.
Qiong Yu +5 more
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Mutagenesis by 4-nitrobenzofurazans and furoxans
Chemico-Biological Interactions, 197715 nitrobenzofurazans and 10 nitrobenzofuroxans synthesized primarily for testing as potential anti-rheumatic drugs were also tested for mutagenicity in Salmonella typhimurium strains TA98 and TA100. The method used involved placing each compound in a "well" cut out of a plate of selective medium previously seeded with the appropriate tester strain ...
D G, Macphee +4 more
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Monocyclic and cascade rearrangements of furoxans
Pure and Applied Chemistry, 2004Monocyclic rearrangements of azoles are extensively studied as alternative methods for the preparation of new heterocyclic systems. The present work is devoted to investigation of monocyclic and cascade rearrangements of 1,2,5-oxadiazole 2-oxide (furoxan) derivatives.
Nina N. Makhova +4 more
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Explosive properties of furoxanes
Combustion, Explosion, and Shock Waves, 2008The detonation characteristics of explosives from the class of furoxanes are calculated. It is shown that furoxanes containing other explosophoric groups have very high detonation parameters. The high sensitivity of furoxanes, which is their common property, can be eliminated, at the expense of a decrease in their power, by increasing their ...
V. I. Pepekin +2 more
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Furoxans as nitrile oxide precursors: Cycloaddition reactions of bis(benzenesulfonyl)furoxan.
Tetrahedron Letters, 1981Abstract Bis(benzenesulfonyl)furoxan has been shown to undergo cycloaddition reactions with dipolarophiles in refluxing xylene to give benzenesulfonylnitrile oxide cycloadducts.
Ralph A. Whitney, Everton S. Nicholas
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