Category: Tetrahydropyrans

Related Products of 499-40-1, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 499-40-1, Name is (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal, molecular formula is C12H22O11. In a Article£¬once mentioned of 499-40-1

Sequential amination of heteroaromatic halides with aminopyridine 1-oxides and their N-protected derivatives based on novel aza-Smiles rearrangement

The SNAr and Pd-catalyzed amination of chloro derivatives of azines, diazines, and triazines with 2-aminopyridine 1-oxides and their N-protected derivatives was described.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Application of 19752-84-2, An article , which mentions 19752-84-2, molecular formula is C5H10O2. The compound – Tetrahydro-2H-pyran-3-ol played an important role in people’s production and life.

Discovery of Selective Small Molecule Inhibitors of Monoacylglycerol Acyltransferase 3

Inhibition of triacylglycerol (TAG) biosynthetic enzymes has been suggested as a promising strategy to treat insulin resistance, diabetes, dyslipidemia, and hepatic steatosis. Monoacylglycerol acyltransferase 3 (MGAT3) is an integral membrane enzyme that catalyzes the acylation of both monoacylglycerol (MAG) and diacylglycerol (DAG) to generate DAG and TAG, respectively. Herein, we report the discovery and characterization of the first selective small molecule inhibitors of MGAT3. Isoindoline-5-sulfonamide (6f, PF-06471553) selectively inhibits MGAT3 with high in vitro potency and cell efficacy. Because the gene encoding MGAT3 (MOGAT3) is found only in higher mammals and humans, but not in rodents, a transgenic mouse model expressing the complete human MOGAT3 was used to characterize the effects of 6f in vivo. In the presence of a combination of diacylglycerol acyltransferases 1 and 2 (DGAT1 and DGAT2) inhibitors, an oral administration of 6f exhibited inhibition of the incorporation of deuterium-labeled glycerol into TAG in this mouse model. The availability of a potent and selective chemical tool and a humanized mouse model described in this report should facilitate further dissection of the physiological function of MGAT3 and its role in lipid homeostasis.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Synthetic Route of 2081-44-9, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 2081-44-9, Name is Tetrahydro-2H-pyran-4-ol, molecular formula is C5H10O2. In a Article£¬once mentioned of 2081-44-9

Synthesis and anti-cancer activity of ND-646 and its derivatives as acetyl-CoA carboxylase 1 inhibitors

Acetyl-coA carboxylase 1 (ACC1) is the first and rate-limiting enzyme in the de novo fatty acid synthesis (FASyn) pathway. In this study, through public database analysis and clinic sample test, we for the first time verified that ACC1 mRNA is overexpressed in non-small-cell lung cancer (NSCLC), which is accompanied by reduced DNA methylation at CpG island S shore of ACC1. Our study further demonstrated that higher ACC1 levels are associated with poor prognosis in NSCLC patients. Besides, we developed a novel synthetic route for preparation of a known ACC inhibitor ND-646, synthesized a series of its derivatives and evaluated their activity against the enzyme ACC1 and the A549 cell. As results, most of the tested compounds showed potent ACC1 inhibitory activity with IC50 values 3?10 nM. Among them, compounds A2, A7 and A9 displayed strong cancer inhibitory activity with IC50 values 9?17 nM by impairing cell growth and inducing cell death. Preliminary SAR analysis clearly suggested that (R)-configuration and amide group were vital to ACC1 and A549 inhibition, since compound (S)-A1 (the enantiomer of ND-646) had poor activity of ACC1 inhibition and the carboxylic acid ND-630 almost lost anticancer effect on A549 cells. Collectively, these findings indicate that ACC1 is a potential biomarker and target for non-small-cell lung cancer, and ND-646 and its derivatives as ACC1 inhibitors deserve further study for treatment of NSCLC.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.14215-68-0, Name is N-((2S,3R,4R,5R,6R)-2,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)acetamide, molecular formula is C8H15NO6. In a Article£¬once mentioned of 14215-68-0, Computed Properties of C8H15NO6

Direct glycosylation of unprotected and unactivated sugars using bismuth nitrate pentahydrate

Bi(NO3)3, a low-cost, mild, and environmentally green catalyst, has been successfully utilized for Fischer glycosylation for the synthesis of alkyl/aryl glycopyranosides by reacting unprotected sugars, namely, D-glucose, L-rhamnose, D-galactose, D-arabinose, and N-acetyl-D-glucosamine with various alcohols in good to excellent yields. The glycosides were formed with high alpha-selectivity. Further, an expedient separation of alpha- and beta-glycosides using silver nitrate-impregnated silica gel flash liquid chromatography has been developed.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

31608-22-7, Name is 2-(4-Bromobutoxy)tetrahydro-2H-pyran, molecular formula is C9H17BrO2, belongs to Tetrahydropyrans compound, is a common compound. In a patnet, once mentioned the new application about 31608-22-7, name: 2-(4-Bromobutoxy)tetrahydro-2H-pyran

Reductive Opening of alpha-Methylspiroketals

Syntheses of 5-methyl-1,7-dioxaspiro<5.5>undecane 4 and its three congeners 5, 6, and 7 (alpha-methylspiroketals), and their reductive ring opening using aluminum hydride or silane – Lewis acid system have been investigated.Each spiroketal was synthesized through stereocontrolled acetalization with 42 – 96percent diastereomeric excess (de).The diisobutylaluminum hydride reduction of alpha-methylspiroketals proceeded via the tight oxocarbenium ion pair complex wherein the C-O bond which located at the opposite site against the C(alpha) – methyl bond was cleaved, affording a configuration-retentive product with 50 – 100percent de.The regioselectivity in the silane – Lewis acid reduction of the simplest monomethylspiroketal 4 was controlled by the equilibration of the two possible oxocarbenium ionic intermediates.On the other hand, dimethylspiroketal 5 and siloxyspiroketal 6 showed moderate to high regio- and stereoselectivity (10-100percent de), that originated from regioselective formation of the oxocarbenium ionic species and the subsequent stereoselective hydride attack.In these cases, the coordination site of the Lewis acid was controlled by the steric interaction of the methyl group on C(alpha) with the Lewis acid.To the resultant oxocarbenium ion, stereoelectronically-favored axial hydride attack occured with high stereoselection.The reduction of benzyloxyspiroketal 7 also exhibited good selectivity (62 – 100percent de) while the outcome was opposite to those of 5 and 6.Such a dramatic change could be attributed to the bidentate chelation of the Lewis acid to both the benzyl ether and the neighboring acetal oxygens.The whole procedure, the thermodynamic spiroketalization and the subsequent reductive ring opening, could be regarded as a remote stereochemical control using the spiroketal templates.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 10343-06-3, Name is 2,3,4,6-Tetra-o-acetyl-D-glucopyranose, name: 2,3,4,6-Tetra-o-acetyl-D-glucopyranose.

Glycosyl Imidates, 12. – Direct Synthesis of O-alpha- and O-beta-Glycosyl Imidates

1-O-Unsubstituted aldoses afford with halogen-activated nitriles under base catalysis directly O-alpha- and O-beta-glycosyl imidates which can be isolated as stable compounds.Investigations with 2,3,4,6-tetra-O-benzyl- and -acetylglucose (1a, b), trichloroacetonitrile and trifluoroacetonitrile and NaH and K2CO3, respectively, as base have demonstrated, that the beta-glucopyranosyl-1-oxido oxygen atom is more nucleophilic (rapid formation of 3a-beta, 3b-beta, 4a-beta, and 4b-beta) than the alpha-glycopyranosyl-1-oxido oxygen atom.Because of the reversibility of these reactions, however,due to the anomeric effect finally the thermodynamically more stable alpha-imidates 3a-alpha, 3b-alpha, 4a-alpha, and 4b-alpha are formed exclusively.Therefore O-alpha- and O-beta-glycosyl imidate formation can be conducted highly diastereoselectively. – From trichloroacetonitrile and other 1-O-unsubstituted carbohydrates the imidates 7-alpha – 13-beta were obtained as stable compounds. – Less activated nitriles (chloroacetonitrile, dichloroacetonitrile) have proven not or not so successful in the direct O-glycosyl imidate formation. – N-Aryl ketenimines yielded cleanly base-catalyzed direct O-glycosyl imidate formation.However, because of the irreversibility of this reaction under the reaction conditions only kinetic product formation was observed (leading to the beta-imidates 14a-beta – 14d-beta and 15d-beta.Similarly 1-O-unprotected mannose gave only the beta-product 16d-beta.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. 10343-06-3, C14H20O10. A document type is Article, introducing its new discovery., Recommanded Product: 2,3,4,6-Tetra-o-acetyl-D-glucopyranose

Expeditious synthesis of glycosylated phthalocyanines

3,4-Dicyanophenyl O- and S-glycosides in the gluco, galacto, lacto, and cellobiose series were prepared in virtually quantitative yield through nucleophilic aromatic substitution of 4-nitrophthalonitrile with acetyl-protected glycoses and 1-thio-glycoses. Similarly, 2-(3,4-dicyanophenoxy) ethyl 2,3,4,6-tetra-O-acetyl-beta-D-gluco- and galacto-pyranosides were obtained by nucleophilic substitution of 2-(tosyloxy)ethyl 2,3,4,6-tetra-O- acetyl-beta-D-gluco- and -galactopyranoside with 3,4-dicyanophenol in 82% and 94% yields, respectively. All glycosides were deacetylated and tetramerized to the corresponding glycosylated zinc(II) phthalocyanines without further purification using a template condensation in 42-54% yields. Georg Thieme Verlag Stuttgart.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Application of 14215-68-0. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 14215-68-0, Name is N-((2S,3R,4R,5R,6R)-2,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)acetamide. In a document type is Article, introducing its new discovery.

Characterization and inhibitor studies of chitinases from a parasitic blowfly (Lucilia cuprina), a tick (Boophilus microplus), an intestinal nematode (Haemonchus contortus) and a bean (Phaseolus vulgaris)

The molecular weight pattern and the stage-specific activities of chitinases from the blowfly Lucilia cuprina, the tick Boophilus microplus and the intestinal nematode Haemonchus contortus were examined. Chitinolytic enzymes could be detected in all parasite species tested, but the activity was different between the stages. Highest chitinolytic titers were found in blowfly pupae (83 kDa, 118 kDa), hatching larvae of ticks (58 kDa, 94 kDa) and nematode eggs (43 kDa). Leaves from ethylene-treated bean plants Phaseolus vulgaris expressed two basic Class I chitinases (Ia, Ib) of 34 kDa, differing in their amino acid sequences at residue 33 and 34 (Ia: glycine, proline; Ib: lysine, aspartic acid). Inhibitor studies with blowfly pupae revealed that allosamidin (IC50 = 0.32 (¡À0.02) muM) was by far the best inhibitor when compared with various amino sugar derivatives. This compound also inhibited chitinases from tick larvae (IC50 = 0.69(¡À0.10) muM) and nematode eggs (IC50 = 0.048(¡À0.0045) muM) specifically. Whereas Class Ia chitinase from bean leaves was inhibited only up to 18% by 10 muM allosamidin, it had an IC50 of 1(¡À0.14) muM for the Ib type, which is the first plant chitinase described to be highly sensitive to allosamidin.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.53911-68-5, Name is 4-(4-Chlorophenyl)dihydro-2H-pyran-2,6(3H)-dione, molecular formula is C11H9ClO3. In a Patent£¬once mentioned of 53911-68-5, name: 4-(4-Chlorophenyl)dihydro-2H-pyran-2,6(3H)-dione

ALLOSTERIC PROTEIN KINASE MODULATORS

The invention provides specific small molecule compounds that allosterically regulate the activity or modulate protein-protein interactions of AGC protein kinases and the Aurora family of protein kinases, methods for their production, pharmaceutical compositions comprising same, and their use for preparing medicaments for the treatment and prevention of diseases related to abnormal activities of AGC protein kinases or of protein kinases of the Aurora family.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

In an article, published in an article, once mentioned the application of 10034-20-5, Name is (2S,3R,4R,5S,6R)-6-(Acetoxymethyl)-3-aminotetrahydro-2H-pyran-2,4,5-triyl triacetate hydrochloride,molecular formula is C14H22ClNO9, is a conventional compound. this article was the specific content is as follows.Product Details of 10034-20-5

Synthesis of fluorescently labeled UDP-GlcNAc analogues and their evaluation as chitin synthase substrates

(Chemical Equation Presented) Chitin synthase (CS) polymerizes UDP-GlcNAc to form chitin (poly-beta(1,4)-GlcNAc), a key component of fungal cell wall biosynthesis. Little is known about the substrate specificity of chitin synthase or the scope of substrate modification the enzyme will tolerate. Following a previous report suggesting that 6-O-dansyl GlcNAc is biosynthetically incorporated into chitin, we became interested in developing an assay for CS activity based on incorporation of a fluorescent substrate. We describe the synthesis of two fluorescent UDP-GlcNAc analogues and their evaluation as chitin synthase substrates.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics