Hétérocycles oxygénés (O)

Applications (R)-2-(Benzyloxy)-5-((5-oxotetrahydrofuran-2-yl)methyl)phenyl Neopentyl Sulfate is an intermediate in the synthesis of metabolite of (-)-Epicatechin (E582260).

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Applications 5-Fluorobenzofuran-3-one

2-Methyl-3-(methylthio)furan is an antiproliferative compound. It has been shown to inhibit the growth of cancer cells in vitro at optimal conditions. The antiproliferative effect was determined by a number of techniques, including reaction system and food chemistry. 2-Methyl-3-(methylthio)furan reacts with carbon source such as maltol to form volatile compounds, which are detected using gas chromatography-mass spectrometry (GC-MS). The volatile compounds were identified using GC-MS analysis and headspace analysis. The temperature range for the reaction was between 40°C and 60°C, while the reaction time was around 20 minutes at 50°C.

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Hexahydro-1H-4,6-ethenocyclopropa[4,5]benzo[1,2-c]furan-1,3(3aH)-dione is a cyclohexane anhydride that has been used as a precursor to other organic compounds. It is formed by the condensation of hexahydrobenzene with ethylene oxide. Hexahydro-1H-4,6-ethenocyclopropa[4,5]benzo[1,2-c]furan-1,3(3aH)-dione can be crystallized in several different forms depending on the conditions and solvent used for its synthesis. Hexahydro-1H-4,6-ethenocyclopropa[4,5]benzo[1,2-c]furan-1,3(3aH)-dione has been

2-Methyl-2,5-dimethoxy-2,5-dihydrofuran is a furan compound that can be synthesized from methanol. The hydrolytic reaction of 2-methyl-2,5-dimethoxyfuran with hydrochloric acid provides 2,5-dimethoxyphenethylamine and 2,5-dimethoxybenzaldehyde. The synthesis of racemates starts by reacting the corresponding racemic acid with an alcohol in the presence of an acid catalyst to produce the enantiomers. This process can be carried out using either hydrolysis or electrolysis as a means of separating the stereoisomers. Hydrolysis is accomplished by adding water to a mixture containing the racemic acid and alcohol in an organic solvent such as benzene or chloroform. In this reaction, one half of the ester group reacts with water to form a carboxylic acid and an alcohol. The

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Applications 2-(4-Hydroxybutoxy)tetrahydrofuran is an impurity of Poly(butylene terephthalate) and a by-product of 1,4-Butanediol. References Rafler, G., et al.: Acta Polymerica, 39, 661 (1988);

2,3-Dihydrobenzofuran-5-carboxaldehyde (DBF) is an aldehyde that has been synthesised with high resistance to the mitochondria. DBF inhibits the mitochondrial membrane potential and induces necrotic cell death in staphylococcus. Mitochondrial membrane potential is essential for the production of ATP by oxidative phosphorylation and is crucial for bacterial growth. DBF has inhibitory effects on P. aeruginosa and chalcones have also shown antimycobacterial activity.

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2,5-Dibromofuran is a synthetic chemical that is synthesized from acetonitrile and palladium-catalyzed cross-coupling reaction. It can be obtained by the reaction of sodium in anhydrous form with bromine and subsequent evaporation to dryness. 2,5-Dibromofuran has been shown to reversibly react with chloride at room temperature for one hour, which can be attributed to its electron withdrawing properties. The FTIR spectra of 2,5-dibromofuran show bands corresponding to carbonyl and hydroxyl groups. This chemical has been used in synthesis methods involving surfactants and anhydrous sodium chloride as well as uv irradiation.

5-Methoxybenzofuran-2-carboxylic acid is a formylation reagent that is used to synthesize amides. It can be prepared through the reaction of furan with formic acid and methanol. 5-Methoxybenzofuran-2-carboxylic acid can also undergo a solvolysis using tetrahydrofuran as a solvent. This compound has been shown to react with serine protease at temperatures below 100°C and form an amide. It is soluble in organic solvents such as tetrahydrofuran, benzene, and dioxane.

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Applications Methyl 4-Bromofuran-2-carboxylate is used to prepare pyrimidinamines and pyridinamines as adenosine receptor modulators for treatment of CNS disorders. References Borroni, E., et al.; PCT Int. Appl., WO 2001062233 A2 20010830 (2001)