Heterocycles with Oxygen (O)

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2-Methoxyfuran is a furanic compound and an intermediate in the preparation of trifluoroacetic acid. It has been used in the production of dyes, such as 2-methoxy-5-methylbenzaldehyde. The Friedel-Crafts reaction is one of the most widely used methods for converting alkyl halides to alkenes. In this reaction, 2-methoxyfuran is converted to ethyl diazoacetate by reacting with hydrogen over an aluminum chloride catalyst. The ethyl diazoacetate can then be reacted with a variety of electrophiles, including alcohols and phenols, to produce different products. The reaction proceeds via nucleophilic attack on the carbonyl group by the oxygen atom on carbon 2. This stereoselective reaction produces only one enantiomer (the S configuration). 2-Methoxyfuran is also used in asymmetric synthesis via transfer reactions

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Perfluoro(2-butyltetrahydrofuran) is a fluorinated, non-polar organic solvent with a high boiling point. It can be used for thermal expansion measurements of dextran sulfate solutions and in the preparation of cell culture samples prior to histological analysis. The phase transition temperature of perfluoro(2-butyltetrahydrofuran) is 4.6°C, which means that it is liquid at room temperature and can be used as a vehicle to deliver magnetic particles to lung tissue. Perfluoro(2-butyltetrahydrofuran) also has an experimental model for studying the effects of laser ablation on lung cells.

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Applications (3aR,7aS)-rel-Hexahydro-1,3-isobenzofurandione is a reagent used in the synthesis of Pregabalin (P704800), a GABA analogue used as an anticonvulsant. Also used to prepare P2X7 receptor antagonists. References Taylor, C.P., at al.: Epilepsy Res., 14, 11 (1993), Field, M.J., et al.: Pain, 80, 391 (1999); Eur. J. Org. Chem., 2013, 4495 (2013); Yang, H. et al.: Chinese. Chem. Lett., 24, 553 (2013);

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Trans-4-Methylene-2-octyl-5-oxotetrahydrofuran-3-carboxylic acid is a modulator that interacts with focusing and modifying enzymes. It is a synthetic analogue of the natural molecule, 5-hydroxytetrahydrofolate, which has been shown to be an enzymatic inhibitor and anti-cancer drug. Trans-4-Methylene-2-octyl-5-oxotetrahydrofuran-3-carboxylic acid has been shown to inhibit the growth of cancer cells by inhibiting the production of proteins vital for cell division. Trans 4 methylene 2 octyl 5 oxotetrahydrofuran 3 carboxylic acid is being investigated as a possible treatment for cancer globally.

(2R,3R,4S,5R)-2-(6-((2-Hydroxyethyl)amino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (also known as 6-(2-(2'-hydroxyethoxy)ethylamino)-9H-purin-9-ol or Adoxostat), is an organic compound that belongs to the family of purine analogues. It is a potent antioxidant and has anti-inflammatory properties. The compound inhibits the production of reactive oxygen species (ROS) by scavenging free radicals and by inhibiting the activity of enzymes involved in ROS production. The compound also stimulates the production of growth factors and prevents apoptosis. Adoxostat has been shown to be effective in both biochemical and animal studies.