Category: 22929-52-8

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COMPOUNDS

Anti-viral agents of compounds of Formula (I) : wherein A, R1, R2 and R3 are as defined in the specification, processes for their preparation and their use in HCV treatment are provided.

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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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SULPHAMOYLPYRROLAMIDE DERIVATIVES AND THE USE THEREOF AS MEDICAMENTS FOR THE TREATMENT OF HEPATITIS B

Inhibitors of HBV replication of Formula (ID) including stereochemically isomeric forms, and salts, hydrates, solvates thereof, wherein X, Ra to Rd and R4 to R6 have the meaning as defined herein. The present invention also relates to processes for preparing said compounds, pharmaceutical compositions containing them and their use, alone or in combination with other HBV inhibitors, in HBV therapy.

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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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Photochemical generation and trapping of 3-oxacyclohexyne

The strained heterocyclic alkyne, 3-oxacyclohexyne, was generated photochemically for the first time using a cyclopropanated phenanthrene precursor, and trapped by cyclopentadienones as Diels-Alder adducts. The precursor initially produced the putative 3-oxacyclopentylidenecarbene that subsequently rearranged to the cycloalkyne. Computational studies indicate that the carbene favors a singlet state, and the barrier for its ring expansion by a 1,2-shift of the carbon proximal to oxygen is lower in energy than the corresponding shift of the distal carbon.

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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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OXEPAN-2-YL-PYRAZOL-4-YL-HETEROCYCLYL-CARBOXAMIDE COMPOUNDS AND METHODS OF USE

Oxepan-2-yl pyrazol-4-yl-heterocyclyl-carboxamide compounds of Formula I, including stereoisomers, geometric isomers, tautomers, and pharmaceutically acceptable salts thereof, wherein X is thiazolyl, pyrazinyl, pyridinyl, or pyrimidinyl, are useful for inhibiting Pim kinase, and for treating disorders such as cancer mediated by Pim kinase. Methods of using compounds of Formula I for in vitro, in situ, and in vivo diagnosis, prevention or treatment of such disorders in mammalian cells, or associated pathological conditions, are disclosed.

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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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SPIROCYCLIC HAT INHIBITORS AND METHODS FOR THEIR USE

Compounds having a structure of Formula (IX) or a stereoisomer, tautomer or pharmaceutically acceptable salt thereof, wherein R1, R2a, R2b, R3a, R3b, R4a, R4b, Q1—-Q2, R6, R7, A, B, W, x, and y are as defined herein and are provided. Pharmaceutical compositions comprising such compounds and methods for treating various HAT-related conditions or diseases, including cancer, by administration of such compounds are also provided.

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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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Widely applicable background depletion step enables transaminase evolution through solid-phase screening

Directed evolution of transaminases is a widespread technique in the development of highly sought-after biocatalysts for industrial applications. This process, however, is challenged by the limited availability of effective high-throughput protocols to evaluate mutant libraries. Here we report a rapid, reliable, and widely applicable background depletion method for solid-phase screening of transaminase variants, which was successfully applied to a transaminase from Halomonas elongata (HEWT), evolved through rounds of random mutagenesis towards a series of diverse prochiral ketones. This approach enabled the identification of transaminase variants in viable cells with significantly improved activity towards para-substituted acetophenones (up to 60-fold), as well as tetrahydrothiophen-3-one and related substrates. Rationalisation of the mutants was assisted by determination of the high-resolution wild-type HEWT crystal structure presented herein.

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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PROTEASE INHIBITORS

The invention relates to 3-hydroxy-and 3-keto-cyclohetero-substituted leucine compounds that are inhibitors of cysteine proteases, particularly cathepsin K, and are useful in the treatment of diseases in which inhibition of bone loss is a factor. The 3-hydroxy-or 3-keto-moiety is bonded to a tetrahydrothiophene, tetrahydrothiopyran, tetrahydrofuran or tetrahydropyran ring.

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Safety of Dihydrofuran-3(2H)-one, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 22929-52-8, Name is Dihydrofuran-3(2H)-one, molecular formula is C4H6O2

2-PYRIDYL CARBOXAMIDE-CONTAINING SPLEEN TYROSINE KINASE (SYK) INHIBITORS

The invention provides certain 2-pyridyl carboxamide-containing compounds of the Formula (I) or pharmaceutically acceptable salts thereof, wherein A and B are as defined herein. The invention also provides pharmaceutical compositions comprising such compounds, and methods of using the compounds for treating diseases or conditions mediated by Spleen Tyrosine Kinase (Syk) kinase

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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Catalytic asymmetric hydrogenation of heterocyclic ketone-derived hydrazones, pronounced solvent effect on the inversion of configuration

An enantioselective hydrogenation of hydrazones derived from heterocyclic ketones was developed with up to 85% ee. The enantiomeric purity was enriched to >99% ee by crystallization from EtOAc in >80% yield. Optimization studies have revealed a notable solvent effect that resulted in inversion of enantioselectivity from 85% ee in MeOH to -27% ee in DCE. The hydrazone geometry and possible hydrogenation via endocyclic alkene were examined as possible factors for the inversion of enantioselectivity.

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

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Enantioselective Oxidative Cyclization/Mannich Addition Enabled by Gold(I)/Chiral Phosphoric Acid Cooperative Catalysis

An enantioselective Mannich-type reaction of 3-butynol and nitrones is described, which affords dihydrofuran-3-ones in good yields and with excellent enantioselectivities. The reaction is initiated by gold-catalyzed alkyne oxidation and modification of the resulting gold carbene species with a tethered hydroxy group to form enolate species; the reaction terminates with an enantioselective Mannich-type addition with the assistance of chiral phosphoric acid (CPA) and hydrogen bonding. This novel pattern of alkyne transformation involving chemical bond cleavage, and a fragment modification and reassembly process, provides an atom- and step-economic method, and is the first example of cooperative asymmetric catalysis in gold-catalyzed alkyne oxidations via an alpha-oxo gold carbene route.

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem