Results 31 to 40 of about 2,292 (169)

Arylation of β,γ-unsaturated lactones by a Heck-Matsuda reaction: an unexpected route to aryldiazene butenolides and pyridazinones

Química Nova, 2010
The palladium catalysed coupling of aryldiazonium salts with β-γ-unsaturated lactones under basic conditions has been investigated. Both (3H)-furanone and α-angelicalactone were evaluated as substrates in the Heck Matsuda reaction but both
Jason G. Taylor, Carlos Roque D. Correia
doaj   +1 more source

Convenient Synthesis of 3,4-Dichloro-5-hydroxy-2(5H)-Furanone Glycoconjugates

Molecules, 2011
3,4-Dichloro-5-hydroxy-2(5H)-furanone treated with methyl chloroformate in the presence of diisopropylethylamine (Hünig’s base) gave the corresponding carbonate. The labile methoxycarbonyloxy group smoothly undergoes substitution by amino alcohols.
Edyta Gondela, Krzysztof Z. Walczak
doaj   +1 more source

Side-chain Modifications of Highly Functionalized 3(2H)-Furanones

Molecules, 2012
A series of 3(2H)-furanones, based on side-chain modifications of a parent 3(2H)-furanone, was synthesized in good yield. The parent compound was prepared by hydrogenolysis, and subsequent acid hydrolysis, of isoxazole derivatives.
Gil Valdo José da Silva, Maurício Gomes Constantino, Viviani Nardini, Shirley Muniz Machado Rodrigues   +3 more
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THE SYNTHESIS OF (5-HYDROXY-5-(1-METHOXYPROPAN-2-YL) -4-METHYLFURAN-2(5H)-ONE, 5-(1-METHOXYPROPAN-2-YL) -4-METHYLFURAN-2(5H)-ONE) AND BIOLOGICAL ACTIVITY

Journal of Fundamental and Applied Sciences, 2015
Butenolides are a class of lactones with a four carbon heterocyclic ring structure.  They are sometimes considered as oxidized derivatives of furan. The simplest butenolide is 2-furanone, which is a common component of larger natural products and is ...
N. Gherraf, N. Tamma
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Oxidation of Chiral 2(5H)-Furanone Bis-Thioethers to Disulfoxides

Учёные записки Казанского университета: Серия Естественные науки, 2023
Novel disulfinyl derivatives based on 3,4-dichloro-2(5H)-furanone, aliphatic dithiols, and monoterpene alcohols were synthesized. Chiral bis-thioethers in the molecules of which the dithiol fragment links two five-membered cycles at C4 atoms were ...
A. M. Khabibrakhmanova, E. S. Rabbanieva, D. P. Gerasimova, O. A. Lodochnikova, L. Z. Latypova, A.  R. Kurbangalieva   +5 more
doaj   +1 more source

Furanone, morpholinone and tetrahydrofuran derivatives from the marine-derived fungus Talaromyces sp. PSU-MF07

Natural Product Research, 2022
Three new compounds including one furanone, one morpholinone and one tetrahydrofuran together with three known compounds were isolated from the broth extract of the marine-derived fungus Talaromyces sp. PSU-MF07. The structures of the isolated compounds were determined on the basis of spectroscopic methods. The relative configuration was assigned using
Sucheewin Nuansri, Vatcharin Rukachaisirikul, Chatchai Muanprasat, Souwalak Phongpaichit, Sita Preedanon, Jariya Sakayaroj   +5 more
openaire   +2 more sources

Anti-phytopathogenic Bacterial Metabolites From the Seaweed-Derived Fungus Aspergillus sp. D40

Frontiers in Marine Science, 2020
In order to search for new lead compounds with anti-phytopathogenic bacterial activity, three pairs of new furanone derivatives, sclerotiorumins D–F (1–3), and eight known compounds (4–11) were isolated from the seaweed-derived fungus, Aspergillus sp ...
Rui-Huan Huang, Wei Lin, Peng Zhang, Jian-Yang Liu, Dan Wang, Dan Wang, Yi-Qiang Li, Xiao-Qiang Wang, Cheng-Sheng Zhang, Wei Li, Dong-Lin Zhao   +10 more
doaj   +1 more source

Diphenyl-Furanones and Diphenyl-Oxopyrrole Derivatives: From Analytical Reagents for Amino Groups to New Fluorochromes for Cytochemical Staining of Chromatin DNA and Chromosomes: Proposal for Intercalative Binding and Fluorescence Mechanism

Colorants, 2023
Diaryl-furanones are specific analytical reagents for the biochemical detection of primary amines by fluorescence techniques. Well-known reagents are fluorescamine (Fluram) and 2-methoxy-2,4-diphenyl-3(2H)-furanone (MDPF), yielding fluorescent products ...
Juan C. Stockert, Silvina A. Romero, Marcelo N. Felix-Pozzi, Alfonso Blázquez-Castro   +3 more
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Model Substrate/Inactivation Reactions for MoaA and Ribonucleotide Reductases: Loss of Bromo, Chloro, or Tosylate Groups from C2 of 1,5-Dideoxyhomoribofuranoses upon Generation of an α-Oxy Radical at C3

Molecules, 2020
We report studies on radical-initiated fragmentations of model 1,5-dideoxyhomoribofuranose derivatives with bromo, chloro, and tosyloxy substituents on C2.
Stanislaw F. Wnuk, Mukesh M. Mudgal, Ireneusz Nowak, Morris J. Robins   +3 more
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Thio Derivatives of 2(5H)-Furanone As Inhibitors against Bacillus subtilis Biofilms [PDF]

Acta Naturae, 2015
Gram-positive bacteria cause a wide spectrum of infectious diseases, including nosocomial infections. While in the biofilm, bacteria exhibit increased resistance to antibiotics and the human immune system, causing difficulties in treatment. Thus, the development of biofilm formation inhibitors is a great challenge in pharmacology.
Trizna E., Khakimullina E., Latypova L., Kurbangalieva A., Sharafutdinov I., Evtyugin V., Babynin E., Bogachev M., Kayumov A.   +8 more
openaire   +5 more sources