Heterociclos com Oxigénio (O)

Hexafluoro-2,5-dihydrofuran is a molecule that consists of one sulfur atom and six fluorine atoms. It has the chemical formula SF6. Hexafluoro-2,5-dihydrofuran is an oxidant with a strong oxidizing power and can be used as an oxidant in organic synthesis. It can react with sodium hypochlorite to form permettant, which is a reagent for the conversion of alcohols to alkyl chlorides. Hexafluoro-2,5-dihydrofuran reacts with oxirane to produce fluoride and hydrogen fluoride. This compound is also known as hexafluorodihydrofluorane or tetrafluoromethane.

5-Chloro-benzofuran-2-carboxylic acid ethylester is a drug that inhibits the enzyme HMG-CoA reductase, which plays an important role in the synthesis of cholesterol. It is used to lower triglyceride levels and reduce serum triglycerides. 5-Chloro-benzofuran-2-carboxylic acid ethylester has also been shown to have antilipidemic activity, as it lowers high levels of cholesterol and triglycerides. This drug is metabolized by cytochrome P450 2C8 and 2C9, which may lead to increased levels of liver enzymes.

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Isobenzofuran-1(3H)-one is a chemical compound that is structurally similar to the drug coumarin. Isobenzofuran-1(3H)-one has shown potential as a drug target and has been shown to have antioxidative properties, inhibitory properties and biological properties. It also has a dihedral angle of about 100°, which may be important for its biological function. Isobenzofuran-1(3H)-one inhibits the production of p-hydroxybenzoic acid by inhibiting basic fibroblast cells, which may be related to its inhibitory effect on cancer cells. This chemical compound also induces mitochondrial membrane depolarization and neuronal death in rat brain cells in vitro.

Methyl 4-oxotetrahydrofuran-3-carboxylate is a tetrahydrofuran with an acyclic structure. It has a potency of 100 µM and is selective for the human receptor. Methyl 4-oxotetrahydrofuran-3-carboxylate binds to the human receptor and activates it, leading to an increase in intracellular cAMP levels. This compound has been shown to have significant affinity for the 5HT2A receptor and can be used as a potential drug lead. Methyl 4-oxotetrahydrofuran-3-carboxylate is synthesized from 3,4,5,6,7,8-hexahydrobenzo[e]pyrrolo[1,2a]pyrazine by sulfonylation with sodium hydroxide followed by hydrolysis with sulfuric acid. The synthesis of methyl 4-ox

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2,3-Dihydro-1-benzofuran-7-carboxylic acid is a synthetic intermediate that is used in the preparation of other compounds. It is an important precursor to the synthesis of 2,3-dihydrobenzo[e]furan. The hydrolysis reaction of this compound requires a reaction time of 24 hours and yields succinic acid as a product. This compound has been shown to be effective in treating inflammatory diseases such as arthritis and rheumatism.

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Methyl 3,5-di-O-(2,4-dichlorobenzyl)-D-ribofuranoside (MBZ) is a reagent that converts benzyl alcohols to the corresponding chloride. This reaction is selective and optimized for the debenzylation of phenols. MBZ is also used as a reagent in the synthesis of 2,5-dichloro-1,4-benzoquinones by hydroxylation of phenols with hydrogen peroxide. The methyl group of MBZ can be removed by treatment with tetrachloride or hydroxylation.

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3-Ketocarbofuranphenol is a metabolite of carbofuran. It is formed by the hydroxide solution method and has a terminal half-life of 6 hours. 3-Ketocarbofuranphenol can be detected in the human serum using gas chromatography with electron capture detection. 3-Ketocarbofuranphenol is produced in plants by the conversion of carbofuran to 3-ketocarbofuranphenol, which is then converted to 3-hydroxycarbofuranphenol and finally to 3-ketocarboxyfuran. The formation rate of 3-ketocarbofuranphenol from carbofuran was found to be dependent on the concentration of carbon dioxide in the atmosphere, temperature, pH, and light intensity. This chemical compound is used as an insecticide for planthoppers and other pests that destroy crops. It also has been used for wastewater treatment because it binds to organic matter and

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3-Acetoxybenzofuran is an ester that can be synthesized by the reaction of methanol with sodium methoxide. It is also formed during the cyclization of 3-acetoxybenzoic acid. The synthesis of 3-acetoxybenzofuran can be achieved through the use of a variety of reagents, including sodium methoxide and dimethyl or methoxymethane. This compound has been shown to have anti-inflammatory properties and has been found to inhibit prostaglandin synthesis in rats.

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(Perfluorobutyl)tetrahydrofuran is a fluorinated phosphazene that has been shown to be effective in the treatment of hypoxia-induced lung injury. It is also used as a polymer film for drug delivery and as a coating on medical devices to prevent blood clotting. This compound has been shown to increase the rate of protein synthesis in animals, but its clinical relevance is unknown. (Perfluorobutyl)tetrahydrofuran has also been shown to have an effect on fertility and fetal heart rate in rats, which may be due to its ability to bind with fatty acids or divalent hydrocarbons.

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