Month: June 2021

57203-01-7, Name is (S)-(Tetrahydrofuran-2-yl)methanol, belongs to tetrahydrofurans compound, is a common compound. Recommanded Product: 57203-01-7In an article, once mentioned the new application about 57203-01-7.

The synthesis and pharmacological activities of the four stereoisomers of methyl tetrahydrofuran-2-ylmethyl 2,6-dimethyl-4-(2′-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate (furnidipine) are reported.The four isomers were synthesized by a modified Hantzsch synthesis by reaction of (-)- or (+)-tetrahydrofuran-2-ylmethyl 3-aminocrotonate and methyl 2-<(2'-nitrophenyl)methylene>acetoacetate or, alternatively, by reaction of (-)- or (+)-tetrahydrofuran-2-ylmethyl 2-<(2'-nitrophenyl)methylene>acetoacetate and methyl 3-aminocrotonate.The 1:1 diasteromeric mixture thus obtained were separated by chromatography, using poly(D-phenylglycine) as the chiral stationary phase.The enantiomeric purity of the stereoisomers was determined by high-performance liquid chromatography-chiral stationary phase technique (HPLC-CSP).Attempts to obtain crystals of a single stereoisomer failed in different solvent, while methanol crystallization of the product obtained from (+/-)-tetrahydrofuran-2-ylmethyl 2-<(2'-nitrophenyl)methylene>acetoacetate and methyl 3-aminocrotonate yielded good-quality crystals of the most insoluble racemate which proved to be a mixture of the (SS)/(RR) enantiomers by X-ray crystaloography.Conformational analysis of the stereoisomers, assuming rotation of the aryl substituent and ester groups, shows small energy differences (about 4 kcal*mol-1) between the most and the least favorable conformations.Binding studies were performed using <3H>isradipine as a reference ligand.The results showed stereospecificity of the furnidipine isomers in brain, ileum, and cardiac tissues, the (SS) and (SR)-isomers clearly being more potent than their (RR)- and (RS)-enantiomers.The (SS)- and (SR)-isomers were also more selective on cerebral tissue when compared with ileal and cardiac preparations.

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

Application of 52079-23-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.52079-23-9, Name is (S)-(-)-alpha-Hydroxy-gamma-butyrolactone, molecular formula is C4H6O3. In a Article，once mentioned of 52079-23-9

Analogs of the methyl alpha-glycosides of the terminal residues of the O-specific polysaccharides (O-PS) of Vibrio cholerae O:1, serotype Inaba and Ogawa, have been prepared as probes to study their interaction with anti V. cholerae O:1 antibodies. They differ from the termini of the respective O-PSs in anomeric or absolute configuration of perosamine, position of the O-methyl group in d-perosamine, and nature of the N-acyl side chain.

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

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. category: Tetrahydrofurans. Introducing a new discovery about 57203-01-7, Name is (S)-(Tetrahydrofuran-2-yl)methanol

Disclosed herein are cannabinoid receptor ligands of formula (I) wherein Y, X1, X2, X3, R1, and R2 are as defined in the specification. Compositions comprising such compounds, and methods for treating conditions and disorders using such compounds and compositions are also disclosed.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.category: Tetrahydrofurans, you can also check out more blogs about57203-01-7

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

Electric Literature of 77513-58-7, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.77513-58-7, Name is Ethyl 2-oxotetrahydrofuran-3-carboxylate, molecular formula is C7H10O4. In a Article，once mentioned of 77513-58-7

The synthesis and 14C-labeling of 3 alpha, 7 alpha, 12 alpha-trihydroxy-27-carboxymethyl-5 beta-cholestan-26-oic acid by two different approaches is described. One of them involves chain elongation of cholic acid via Wittig-Horner condensation of its formylated 24-aldehyde with tetraethyl phosphonoglutarate. The resulting cholestenoate, on deprotection and hydrogenation, affords the unusual C29 bile acid in good yield. An alternative procedure consists in a malonic ester synthesis starting from the formylated 24-alcohol which, after conversion into a mesylate, is reacted with sodium salt of 2-carboethoxy-gamma-butyrolactone. Alkaline hydrolysis, decarboxylation, esterification with diazomethane and selective tosylation of the newly introduced primary hydroxyl function give a C28 precursor, which is easily chain-elongated into a labeled or unlabeled C29 bile acid by reaction with cyanide and hydrolysis. Due to the easy lactonization of some of the C28 intermediates, the latter method provides a better way for introducing a C-29 label than the sequence usually employed for carboxyl labeling of bile acids and consisting in a decarboxylative halogenation of the parent acid followed by substitution of the norhalogenide with [14C]cyanide and hydrolysis. The structure of the synthesized acid or its dimethyl ester is confirmed by 13C nuclear magnetic resonance spectroscopy and mass spectrometry, and is also shown by gas liquid chromatography to be identified with an authentic sample of biosynthetic C29 dioic bile acid extracted from body fluids of Zellweger patients.

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

Application of 453-20-3, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.453-20-3, Name is 3-Hydroxytetrahydrofuran, molecular formula is C4H8O2. In a Patent，once mentioned of 453-20-3

The invention relates to a fused imidazole compound, its preparation method and application thereof. The structure of the compound of the general formula I as shown, wherein the definition of each group in the specification. These compounds are capable of selectively inhibiting the indocyanine 2, 3 – dioxygenase (IDO). The compounds of the invention can be used as the IDO inhibitor for the treatment and/or prevention of IDO-mediated with tryptophan metabolic pathway is characterized by pathology of the disease, such as cancer, eye diseases, autoimmune disease, mental disorder, depression, anxiety disorders and other diseases. (by machine translation)

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

Reference of 4971-56-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.4971-56-6, Name is Furan-2,4(3H,5H)-dione, molecular formula is C4H4O3. In a Review，once mentioned of 4971-56-6

Sesterterpenes form a small group of terpenoids that are mainly present in the marine world although they are also produced by terrestrial organisms such as fungi, and in minor extent higher plants, lichens and insects. Sesterterpenes are diverse and these compounds display significant biological activities such as anti-inflammatory, cytotoxic, anticancer, antimicrobial, antitubercular, and anti-biofilm. This review presents the sesterterpenoid compounds identified from marine sources between 2013 and 2017. Structures are grouped as scalaranes, linear sesterterpenes and other sesterterpenes. Natural sources and reported biological activities are summarized in a table format.

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

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. Quality Control of 3-Methyldihydrofuran-2(3H)-one. Introducing a new discovery about 1679-47-6, Name is 3-Methyldihydrofuran-2(3H)-one

Dynamic headspace (DHS) sampling, direct solvent extraction (DSE) and vacuum simultaneous steam distillation-solvent extraction (V-SDE) were used for sample preparation in volatile compound analysis in Thai soy sauce. The extracts obtained from two brands were then analyzed by gas chromatography-mass spectrometry (GC-MS). A comparative study of volatile compounds obtained from these preparation techniques was performed. Some similarities were observed among different characteristic volatile profiles obtained from each preparation technique. Highly volatile compounds were detected only by DHS whereas DSE and V-SDE gave a wide spectrum of chemical classes of compounds detected. Moreover, differences of volatile compounds detected from both soy sauces were noted. This might be due to the differences of production process employed and strains of microorganism used.

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

Synthetic Route of 7175-81-7, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 7175-81-7, Name is (S)-(Tetrahydrofuran-2-yl)methanamine,introducing its new discovery.

Compounds of the general formula (I) or its salt or a compound in which one or more atoms are replaced by their stable, nonradio-active isotopes, in particular its pharmaceutically acceptable salt; in which X is-CH2-; R1 is a mono-to tetrasubstituted, mono-or bicyclic, unsaturated heterocyclic radical having 1 to 4 nitrogen atoms, R2 is C1-6alkyl or C3-6cycloalkyl; R3 is independently of one another H, C1-6alkyl, C1-6alkoxycarbonyl or C1-6alkanoyl; R4 is C2-6alkenyl, C1-6alkyl, unsubstituted or substituted aryl-C1-6alkyl or C3-8cycloalkyl; R5 is-Lm-R6; L is C1-6alkylene which is optionally substituted by 1-4 halogen, or a linker: formula (II) n = 0, 1 or 2; m = 0 or 1; R6 is a radical composed of 2 cyclic systems selected from bicyclo[x.y.z]alkyl, spiro[o.p]alkyl, mono-or bioxabicyclo[x.y.z]alkyl or mono-or bioxaspiro[o.p]alkyl, all of which may be substituted by 1-3 substituents selected from C1-6alkyl, C1-6alkoxy, cyano, halogen, C1-6alkoxy-C1-6alkyl, hydroxy-C1-6alkyl or dialkylamino, or if m = 0: is also saturated C3-8heterocyclyl which comprises 1-2 oxygen atoms, substituted by 1-3 substituents selected from C1-6alkyl, C1-6alkoxy, cyano, halogen, C1-6alkoxy-C1-6alkyl, hydroxy-C1-6alkyl or dialkylamino, or if m = 1: is also saturated C3-8heterocyclyl which comprises 1-2 oxygen atoms, optionally substituted by 1-3 substituents selected from C1-6alkyl, C1-6alkoxy, cyano, halogen, C1-6-alkoxy-C1-6alkyl, hydroxy-C1-6alkyl or dialkylamino; have renin-inhibiting properties and can be used as medicines for the treatment of hypertension.

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

Related Products of 1679-47-6, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1679-47-6, Name is 3-Methyldihydrofuran-2(3H)-one, molecular formula is C5H8O2. In a Article，once mentioned of 1679-47-6

Deoxyfrenolicin and nanaomycin A have been synthesized.Key steps in the synthesis include a phtalide annulation reaction to produce a naphthoquinone, a tandem Diels-Alder/retro-Claisen reaction to produce the carbon skeleton, and a stereoselective reduction of a hemiketal.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Related Products of 1679-47-6. In my other articles, you can also check out more blogs about 1679-47-6

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

Chemistry is traditionally divided into organic and inorganic chemistry. Computed Properties of C11H17NO4S, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 111769-27-8

A compound of formula (I): as well as pharmaceutically acceptable salts thereof, and a pharmaceutical composition comprising the compound. The compound is useful for the treatment of disorder selected from inflammatory diseases, nociceptive pain, auto-immune disease, breathing disorders, fever, cancer, inflammation related anorexia, Alzheimer¿s disease and cardiovascular diseases

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