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Journal articles on the topic 'Carbohydrate derivatives of ketones'

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1

Henderson, Alexander S., John F. Bower, and M. Carmen Galan. "Carbohydrate-based N-heterocyclic carbenes for enantioselective catalysis." Org. Biomol. Chem. 12, no. 45 (2014): 9180–83. http://dx.doi.org/10.1039/c4ob02056a.

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Versatile syntheses of C2-linked and C<sub>2</sub>-symmetric carbohydrate-based NHC·HCls from functionalised amino-carbohydrate derivatives are reported. The corresponding Rh complexes were evaluated in asymmetric hydrosilylation of ketones.
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2

Maram, Lingaiah, and Fujie Tanaka. "Mannich Reactions of Carbohydrate Derivatives with Ketones To Afford Polyoxy-Functionalized Piperidines." Organic Letters 21, no. 4 (2019): 1165–69. http://dx.doi.org/10.1021/acs.orglett.9b00105.

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3

SHARIPOV, B. T., A. N. DAVYDOVA, and F. A. VALEEV. "SYNTHESIS OF CARBOHYDRATE BLOCKS FOR 2'.3'-DIDEOXYNUCLEOSIDES FROM LEVOGLUCOSENONE." Izvestia Ufimskogo Nauchnogo Tsentra RAN, no. 4 (December 11, 2020): 33–39. http://dx.doi.org/10.31040/2222-8349-2020-0-4-33-39.

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Nucleosides containing five-membered deoxy-carbohydrates in the glycosidic part, such as zalcitabine, 2'.3'-dideoxyuridine, stavudine, are widely used in acquired immunodeficiency syndrome (AIDS). A number of 2'.3'-dideoxynucleosides is an effective inhibitor of type-1 immunodeficiency virus (HIV-1) in humans. Levoglucosenone and cyrene (dihydrolevoglucosenone) are unique compounds, optically pure ketones of carbohydrate nature obtained from renewable bio-raw materials and available by pyrolysis of any cellulose-containing materials. They are promising carbohydrates for the production of modif
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4

Kim, Chang Soo, Yanuar Philip Wijaya, Kevin J. Smith, and Elod L. Gyenge. "Electrocatalytic Upgrading of Biomass Fast Pyrolysis Oil." ECS Meeting Abstracts MA2022-01, no. 27 (2022): 2452. http://dx.doi.org/10.1149/ma2022-01272452mtgabs.

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Attempts to electrocatalytically upgrade bio-oil have been made in recent years. Mostly, the ECH (Electrocatalytic Hydrogenation) experiments of bio-oil were done using fixed bed electrode configurations at room temperatures and low current densities (&lt;100 cm-2). The main goal was to demonstrate the viability of ECH as a bio-oil stabilization strategy, mainly through reduction of carbonyl contents (aldehydes and ketones) which could cause polymerization. High temperature may promote condensation polymerization of fast pyrolysis oil, low-temperature ECH is therefore considered a promising ap
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5

Bella, Maroš, Bohumil Steiner, Vratislav Langer, and Miroslav Koóš. "Reaction of selected carbohydrate aldehydes with benzylmagnesium halides: benzyl versus o-tolyl rearrangement." Beilstein Journal of Organic Chemistry 10 (August 20, 2014): 1942–50. http://dx.doi.org/10.3762/bjoc.10.202.

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The Grignard reaction of 2,3-O-isopropylidene-α-D-lyxo-pentodialdo-1,4-furanoside and benzylmagnesium chloride (or bromide) afforded a non-separable mixture of diastereomeric benzyl carbinols and diastereomeric o-tolyl carbinols. The latter resulted from an unexpected benzyl to o-tolyl rearrangement. The proportion of benzyl versus o-tolyl derivatives depended on the reaction conditions. Benzylmagnesium chloride afforded predominantly o-tolyl carbinols while the application of benzylmagnesium bromide led preferably to the o-tolyl carbinols only when used in excess or at higher temperatures. Th
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Park, Min-Kyung, Soyeon Lee, and Young-Suk Kim. "Effects of pH and Osmotic Changes on the Metabolic Expressions of Bacillus subtilis Strain 168 in Metabolite Pathways including Leucine Metabolism." Metabolites 12, no. 2 (2022): 112. http://dx.doi.org/10.3390/metabo12020112.

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Bacillus subtilis is often exposed to diverse culture conditions with the aim of improving hygiene or food quality. This can lead to changes in the volatile metabolite profiles related to the quality of fermented foods. To comprehensively interpret the associated metabolic expressions, changes in intracellular primary and extracellular secondary volatile metabolites were investigated by exposing B. subtilis to an alkaline pH (BP, pH 8.0) and a high salt concentration (BS, 1 M). In particular, B. subtilis was cultured in a leucine-enriched medium to investigate the formation of leucine-derived
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7

Lee, Sang, Young Hwang, Moon Kim, Myung Chung, and Young-Suk Kim. "Comparison of Volatile and Nonvolatile Compounds in Rice Fermented by Different Lactic Acid Bacteria." Molecules 24, no. 6 (2019): 1183. http://dx.doi.org/10.3390/molecules24061183.

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The production of rice-based beverages fermented by lactic acid bacteria (LAB) can increase the consumption of rice in the form of a dairy replacement. This study investigated volatile and nonvolatile components in rice fermented by 12 different LABs. Volatile compounds of fermented rice samples were analyzed using gas chromatography-mass spectrometry (GC-MS) combined with solid-phase microextraction (SPME), while nonvolatile compounds were determined using gas chromatography-time-of-flight/mass spectrometry (GC-TOF/MS) after derivatization. The 47 identified volatile compounds included acids,
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8

Silva, Jadyellen Rondon e., Anderson de Oliveira Souza, Italo Curvelo dos Anjos, Geilly Mara Silva de Pádua, Lucas Campos Curcino Vieira, and Bibiana Mozzaquatro Gai. "Evaluation of chalcones derivatives in lipid peroxidation reduction induced by Fe2+/EDTA in vitro." Research, Society and Development 12, no. 1 (2023): e16012139541. http://dx.doi.org/10.33448/rsd-v12i1.39541.

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Reactive oxygen species (ROS), when in excess, cause damage to biomolecules (DNA, lipids, carbohydrates, and proteins), which are related to several pathologies. There is a growing study of substances that act to inhibit or reduce the action of these ROS. Chalcones are aromatic ketones with a naturally occurring and easily synthesized α,β-unsaturated system. In this work, we investigated the in vitro protective action of a new class of chalcones functionalized by the thiobarbituric acid reactive substances (TBARS) assay. The most promising molecule (Chalcone E) was submitted to the DPPH radica
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9

Davydova, Anna N., Bulat T. Sharipov, and Farid A. Valeev. "Hydroxyderivatives of levoglucosenone in reactions of enantioselective reduction of 1,3-diphenylpropan-1-one." Butlerov Communications 63, no. 9 (2020): 19–25. http://dx.doi.org/10.37952/roi-jbc-01/20-63-9-19.

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The enantioselective reduction of prochiral ketones is an important method for the preparation of enanti-enriched secondary alcohols, which can serve as starting materials for optically active compounds. Chiral metal hydride reagents, such as lithium aluminum hydride (LiAlH4) and sodium borohydride (NaBH4), modified with chiral ligands, have been developed to effect enantioselective reduction. However, in most cases, derivatives are used to obtain chiral hydride reagents, which are rare and hardly available. Therefore, the search for more accessible and effective derivatives suitable for the m
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10

Rachmawati, S. H., I. Widiastuti, S. Ridhowati, A. Umami, I. Vandiwinata, and S. D. Lestari. "Characterization of flavor-related compounds and sensory profiles of four fermented fish products prepared from silver rasbora (Rasbora argyrotaenia) and anchovy (Stolephorus sp.)." Food Research 8, Supplementary 2 (2024): 162–69. http://dx.doi.org/10.26656/fr.2017.8(s2).131.

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Fermented fish products are grouped into salt and salt-carbohydrate types based on the fermentation substrate. A series of biochemical reactions on the substrate affects the flavor characteristics of the resulting products. This study compared the amino acids, fatty acids, and volatile compound profiles of four fermented fish products: bekasam, rusip, fish paste, and fish sauce made from silver rasbora and anchovy. The quantitative descriptive analysis (QDA) was carried out to determine the sensory profiles of those products. The results indicated that rusip and bekasam, which belong to salt-c
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11

Khaperskaya, L., B. Sarymzakova, A. Ibragimova, and R. Sarymzakova. "INFLUENCE OF THE CARBOHYDRATE COMPONENT OF THE SYNTHETIZED HETEROCYCLIC COMPOUNDS ON THEIR BIOLOGICAL ACTIVITY." Journal of science. Lyon, no. 35 (September 30, 2022): 11–17. https://doi.org/10.5281/zenodo.7154829.

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<strong>Abstract</strong> The searching of new biologically active compounds with the highest efficiency and the least side effects is an important goal, the achievement of which has not only scientific, but also humanitarian and economic significance, because this, in fact, is the optimization of synthesis routes. In the research of the pathways for the synthesis of carbohydrate derivatives of heterocyclic compounds of the piperidine series, the reaction of the synthesis of N-glycosylcarbamides using N-aryl glycosides was studied. By computer prediction of biological activity demonstrated, th
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12

Zhang, Beina, Mao Shu, Chunmei Xu, Chunhong An, Rui Wang та Zhihua Lin. "Virtual Screening, Docking, Synthesis and Bioactivity Evaluation of Thiazolidinediones as Potential PPARγ Partial Agonists for Preparation of Antidiabetic Agents". Letters in Drug Design & Discovery 16, № 6 (2019): 608–17. http://dx.doi.org/10.2174/1570180815666180827123512.

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Background:Peroxisome proliferator-activated receptor gamma (PPARγ) is one of the key targets of insulin resistance research, in addition to being ligand-activated transcription factors of the nuclear hormone receptor superfamily with a leading role in adiposeness activation and insulin sensitivity. They regulate cholesterol and carbohydrate metabolism through direct actions on gene expression. Despite their therapeutic importance, there are dose limiting side effects associated with PPARγ drug treatments, thus a new generation of safer PPARγ drugs are being actively sought after treatment.Met
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13

Tkaczenko, Halina, Joanna Grudniewska, Agnieszka Pękala-Safińska, Elżbieta Terech-Majewska, and Natalia Kurhaluk. "Time-dependent changes in oxidative stress biomarkers and activities of lysosomal and antioxidant enzymes in hepatic tissue of rainbow trout (Oncorhynchus mykiss Walbaum) following vaccination against Yersinia ruckeri." Fisheries & Aquatic Life 31, no. 3 (2023): 133–46. http://dx.doi.org/10.2478/aopf-2023-0014.

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Abstract This study analyzed time-dependent effects of vaccination against Y. ruckeri on the oxidative mechanism underlying those effects by detecting relevant lipid peroxidation (2-thiobarbituric acid reactive substances, TBARS) and protein oxidation biomarkers [aldehydic and ketonic derivatives of oxidatively modified proteins (OMP)], antioxidant defenses [activities of superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), glutathione peroxidase (GPx), total antioxidant capacity (TAC)], as well as activities of lysosomal functioning [alanyl aminopeptidase (AAP), leucyl amin
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14

Panova, T. I., and O. I. Myronenko. "INFLUENCE OF KETOSIS AND GLYCEMIA LEVELS ON CRAVING FOR ETHANOL IN ALCOHOLIZED RATS." Medical Science of Ukraine (MSU) 18, no. 4 (2022): 14–20. http://dx.doi.org/10.32345/2664-4738.4.2022.03.

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Relevance. In case of developed alcoholic disease, under conditions of alcoholic hypoglycemia, ketone bodies act as an energy substrate for the brain. However, the role of ketone hunger for maintaining the craving for alcohol has not been established. The assumption of such a connection has a right to exist, since it is alcohol that stimulates the formation of ketone bodies. Therefore, with developed alcoholism, the desire to consume alcohol (and, in fact, "saturate" the brain with ketone bodies) can be considered as a consequence of hypoketonemia. Accordingly, the hunger of the alcoholic is t
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15

Guibourdenche, Christel, Joachim Podlech та Dieter Seebach. "Selective Acylations of Multifunctional Nucleophiles, Including Carbohydrates and Nucleosides, with Intermediates Generated by Wolff Rearrangement of Amino Acid Derived Diazo Ketones: Preparation of β-Amino Acid Derivatives". Liebigs Annalen 1996, № 7 (2006): 1121–29. http://dx.doi.org/10.1002/jlac.199619960710.

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16

GUIBOURDENCHE, C., J. PODLECH, and D. SEEBACH. "ChemInform Abstract: Selective Acylations of Multifunctional Nucleophiles, Including Carbohydrates and Nucleosides, with Intermediates Generated by Wolff Rearrangement of Amino Acid Derived Diazo Ketones: Preparation of . beta.-Amino Acid Derivatives." ChemInform 27, no. 40 (2010): no. http://dx.doi.org/10.1002/chin.199640070.

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17

Hertkorn, N., M. Harir, B. P. Koch, B. Michalke, and P. Schmitt-Kopplin. "High-field NMR spectroscopy and FTICR mass spectrometry: powerful discovery tools for the molecular level characterization of marine dissolved organic matter." Biogeosciences 10, no. 3 (2013): 1583–624. http://dx.doi.org/10.5194/bg-10-1583-2013.

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Abstract. High-performance, non-target, high-resolution organic structural spectroscopy was applied to solid phase extracted marine dissolved organic matter (SPE-DOM) isolated from four different depths in the open South Atlantic Ocean off the Angola coast (3° E, 18° S; Angola Basin) and provided molecular level information with extraordinary coverage and resolution. Sampling was performed at depths of 5 m (Angola Current; near-surface photic zone), 48 m (Angola Current; fluorescence maximum), 200 m (still above Antarctic Intermediate Water, AAIW; upper mesopelagic zone) and 5446 m (North Atla
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18

Roberts, S. M., and N. M. Williamson. "The Use of Enzymes for the Preparation of Biologically Active Natural Products and Analogues in Optically Active Form." Current Organic Chemistry 1, no. 1 (1997): 1–20. http://dx.doi.org/10.2174/1385272801666220121181731.

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The enantioselective hydrolysis of chiral esters using esterases and lipases gives access to key optically active intermediates en route to prostaglandins, coriolic acid, the anti-HIV agent carbovir and mevinic acid type hypocholestemic agents. The hydrolysis of meso-esters using hydrolases is a very efficient strategy in organic synthesis and has been used to prepare the carbocyclic nucleosides neplanocin and risteromycin. Acylases have been used to prepare (-)-carbovir and both enantiomers of a GABA-mimetic from 2-azabicyclo[2.2.1)hept-5-en-3-one. The employment of nitrilases and nitrile hyd
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19

Hertkorn, N., M. Harir, B. P. Koch, B. Michalke, P. Grill, and P. Schmitt-Kopplin. "High field NMR spectroscopy and FTICR mass spectrometry: powerful discovery tools for the molecular level characterization of marine dissolved organic matter from the South Atlantic Ocean." Biogeosciences Discussions 9, no. 1 (2012): 745–833. http://dx.doi.org/10.5194/bgd-9-745-2012.

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Abstract. Non target high resolution organic structural spectroscopy of marine dissolved organic matter (DOM) isolated on 27 November 2008 by means of solid phase extraction (SPE) from four different depths in the South Atlantic Ocean off the Angola coast (3.1° E; −17.7° S; Angola basin) provided molecular level information of complex unknowns with unprecedented coverage and resolution. The sampling was intended to represent major characteristic oceanic regimes of general significance: 5 m (FISH; near surface photic zone), 48 m (FMAX; fluorescence maximum), 200 m (upper mesopelagic zone) and 5
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20

Maya, Kadek, Iswari Pauzi, and Siti Zaetun. "Effect of Carbohydrate Diet Program on Urine Ketone Positivity with A Long Time on A Diet of One until Three Years." THRIVE Health Science Journal 1, no. 1 (2024): 24–29. http://dx.doi.org/10.56566/thrive.v1i1.165.

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Carbohydrate diet is a diet pattern that reduces carbohydrate consumption. Therefore, the body will use fat as an alternative energy source. The continuous use of fat causes the accumulation of fatty acids so it is often the cause of ketone positivity in the urine. Objective: Find out the effect of a carbohydrate diet program on the positivity of urine ketones. Method this research is an analytic observational study with a cross-sectional approach. The sample used was urine from respondents who had been on a carbohydrate diet for 1 year, 2 years, and 3 years, then urine ketones were examined u
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21

Maya, Dyah Astining, Iswari Pauzi, Siti Zaetun, and Yudha Anggit Jiwantoro. "Effects of Carbohydrate Diet Programs on Urine Ketones Positiveness with Long Time on a Diet 1 Year, 2 Years and 3 Years." Jurnal Analis Medika Biosains (JAMBS) 10, no. 1 (2023): 42. http://dx.doi.org/10.32807/jambs.v10i1.303.

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Carbohydrate diet is a diet pattern that reduces carbohydrate consumption. Therefore, the body will use fat as an alternative energy source. The continuous use of fat causes the accumulation of fatty acids so that it often causes ketone positivity in the urine. Objective : Find out the effect of a carbohydrate diet program on the positivity of urine ketones. Method : This research is an analytic observational study with a cross sectional approach. The sample used was urine from respondents who had been on a carbohydrate diet for 1 year, 2 years and 3 years, then urine ketones were examined usi
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22

Nilsson, U. J., E. J. L. Fournier, E. J. Fryz, and O. Hindsgaul. "Parallel Solution Synthesis of a ..Carbohybrid.. Library Designed to Inhibit Galactose-Binding Proteins." Combinatorial Chemistry & High Throughput Screening 2, no. 6 (1999): 335–52. http://dx.doi.org/10.2174/1386207302666220206123051.

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Parallel solution S-alkylations of a 1-thio--D-galactopyranoside derivative with Michael acceptors and a.-chloroketones, followed by ketone reductions, reductive aminations, and acylations were developed to yield a library of 1-thio--D-galactopyranosides carrying small and diverse polar-neutral, hydrophobic, aromatic, cationic, or anionic non-carbohydrate aglycon structures. Screening of the library against a panel of galactose recognizing plant lectins revealed J.!M inhibitors of toxin A of A. precatorius superior to the reference ligands lactose and N-acetyllactosamine. Such small, monosacch
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23

Liu, Hongming, Xiaoxing Liu, Lei Liu, Xixi Zhang, and Chunbao Li. "Practical aqueous reactions leading to skeletally diverse carbohydrate-derived ketones." RSC Advances 5, no. 16 (2015): 11831–36. http://dx.doi.org/10.1039/c4ra14457k.

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24

Mijatovic, Jovana, Jimmy Chun Yu Louie, Marion E. C. Buso, et al. "Effects of a modestly lower carbohydrate diet in gestational diabetes: a randomized controlled trial." American Journal of Clinical Nutrition 112, no. 2 (2020): 284–92. http://dx.doi.org/10.1093/ajcn/nqaa137.

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ABSTRACT Background Lower carbohydrate diets have the potential to improve glycemia but may increase ketonemia in women with gestational diabetes (GDM). We hypothesized that modestly lower carbohydrate intake would not increase ketonemia. Objective To compare blood ketone concentration, risk of ketonemia, and pregnancy outcomes in women with GDM randomly assigned to a lower carbohydrate diet or routine care. Methods Forty-six women aged (mean ± SEM) 33.3 ± 0.6 y and prepregnancy BMI 26.8 ± 0.9 kg/m2 were randomly assigned at 28.5 ± 0.4 wk to a modestly lower carbohydrate diet (MLC, ∼135 g/d ca
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25

Vudmaska, I., S. Sachko, A. Petruk, N. Pakholkiv, V. Hudyma, and A. Skorokhid. "Correction the blood biochemical parameters in transition dairy cows by hop cones and vitamin E supplement." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 21, no. 95 (2019): 117–21. http://dx.doi.org/10.32718/nvlvet9522.

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In the prevention and treatment of cow ketosis, the regulation of glucose and fatty acids is the main focus, while ammonia intoxication is largely ignored. The intensity of formation of the rumen ammonia can be reduced by ionophore antibiotic monensin. Hop cones contain a number of biologically active components including phytoionoрhores: prenylated polyphenols lupulon, humulon and their derivatives. Therefore, hop cones can be considered as a potential substitute for antibiotics-ionophores. Vitamin E, fed to ruminants in large quantities, stimulates the cellulosolytic bacteria of the rumen. A
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26

Ledet, Thomas, and Lene Heickendorff. "Insulin, ketones, glucose and glucagon:." Acta Endocrinologica 115, no. 1 (1987): 139–43. http://dx.doi.org/10.1530/acta.0.1150139.

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Abstract. The influence of insulin in physiological concentrations on basement membrane (BM)-like material from arterial smooth muscle cells was studied in cell cultures. BM-like material was isolated from the cell layer by a sonication-differential centrifugation technique after a 24-h incubation period with insulin and [3H]leucine added to the culture medium. Insulin in concentrations of 50, 100, 200 and 500 mU/l was found to exert no influence on incorporation of amino acids into BM-like material. Neither glucose, 16 mmol/l, ketones, 1 mmol/l, nor glucagon 100 ng/l were able to induce alter
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27

Nishino, Shigeyoshi, Hatsuko Takamura, and Yoshiharu Ishido. "Regioselective protection of carbohydrate derivatives." Tetrahedron 42, no. 7 (1986): 1995–2004. http://dx.doi.org/10.1016/s0040-4020(01)87616-x.

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28

Zsoldos‐Mády, Virág, Pál Sohár, József Kovács, István Pintér, and Zoltán Szakács. "New Carbohydrate Derivatives of Norfloxacin." Journal of Carbohydrate Chemistry 24, no. 1 (2005): 19–39. http://dx.doi.org/10.1081/car-200049410.

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29

Foster, A. B., and M. Stacey. "Ionophoresis of some carbohydrate derivatives." Journal of Applied Chemistry 3, no. 1 (2007): 19–21. http://dx.doi.org/10.1002/jctb.5010030104.

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30

Bonar-Law, Richard P., Anthony P. Davis, and Brian A. Murray. "Artificial Receptors for Carbohydrate Derivatives." Angewandte Chemie International Edition in English 29, no. 12 (1990): 1407–8. http://dx.doi.org/10.1002/anie.199014071.

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31

Zeng, Qing-le, Guang-xun Li, Zhuo Tang та Ling-yu Li. "Solvent-Free Synthesis of α-Amino Ketones from α-Hydroxyl Ketones via A Novel Tandem Reaction Sequence Based on Heyns Rearrangement". Synlett 30, № 06 (2019): 694–98. http://dx.doi.org/10.1055/s-0037-1611731.

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Heyns rearrangement have been famous for carbohydrate chemists for several decades. However, this reaction was underrated as a useful method for synthetic chemists due to preparative shortcomings. Herein we developed an efficient method for the synthesis of pharmaceutically important α-amino ketones from readily available α-hydroxy ketones and secondary amines through a tandem reaction sequence based on Heyns rearrangement. The reaction smoothly proceeded by using catalytic PTSA as catalyst without solvent. Primary and secondary α-hydroxy ketones were readily used and regioselectively afforded
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Sawengngen, Nattawut, Petrakis N. Chalikidi, Sara Araby, Frank Hampel, Peter Gmeiner, and Olga V. Serdyuk. "Synthesis of pyrazolylvinyl ketones from furan derivatives." Organic & Biomolecular Chemistry 17, no. 19 (2019): 4850–55. http://dx.doi.org/10.1039/c9ob00701f.

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33

Zeifman, Yu V. "gem-Diacyloxy derivatives of polyfluoro ketones." Russian Chemical Bulletin 58, no. 7 (2009): 1531–32. http://dx.doi.org/10.1007/s11172-009-0209-x.

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34

Yang, Ru Chun, Tao Hu, Xiao Jun Wang, and Qiang Xiao. "Synthesis of Carbohydrate-Conjugated Flavone Derivatives." Advanced Materials Research 1094 (March 2015): 53–56. http://dx.doi.org/10.4028/www.scientific.net/amr.1094.53.

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A series of flavone derivatives conjugated with carbohydrate were synthesized from 2-(3,4-dimethoxyphenyl)-4H-chromen-4-one. The key step is its cross coupling with the carbohydrate under Sonogashira reaction.
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Heinrich, Angelica, Shahnaz Perveen, Gerardo Janairo, et al. "Synthesis of First Tetrathiafulvalene-Carbohydrate Derivatives." Letters in Organic Chemistry 3, no. 11 (2006): 865–67. http://dx.doi.org/10.2174/157017806779117021.

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36

Shetty, Nitinkumar S., Jae-Ho Jeon, and Chul-Jin Ahn. "Synthesis of New PCDA-Carbohydrate Derivatives." Journal of the Korean Chemical Society 54, no. 5 (2010): 650–52. http://dx.doi.org/10.5012/jkcs.2010.54.5.650.

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37

Allen, Douglas K., and Bernard Y. Tao. "Carbohydrate-alkyl ester derivatives as biosurfactants." Journal of Surfactants and Detergents 2, no. 3 (1999): 383–90. http://dx.doi.org/10.1007/s11743-999-0093-4.

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38

Herczegh, Pál, Imre Kovács, Gyöngyi Erdösi, et al. "Stereoselective cycloaddition reactions of carbohydrate derivatives." Pure and Applied Chemistry 69, no. 3 (1997): 519–24. http://dx.doi.org/10.1351/pac199769030519.

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39

Nestler, James R. "Metabolic substrate change during daily torpor in deer mice." Canadian Journal of Zoology 69, no. 2 (1991): 322–27. http://dx.doi.org/10.1139/z91-052.

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Various metabolic substrates were measured in plasma (glucose, free fatty acids (FFA), ketones, lactate), heart, liver, and skeletal muscle (glycogen, ketones, lactate) of deer mice (Peromyscus maniculatus) in association with their daily torpor cycle. Immediately after feeding, substrate levels were similar to those observed in other mammals. However, within 8–10 h carbohydrate indices (glucose, glycogen) decreased significantly in plasma, liver, and skeletal muscle, with prominent increases in FAA and ketones. Thus the metabolic condition of normothermic deer mice (body temperature 35–38 °C)
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40

Thompson, E. Anne, and Hatem H. Salem. "Modification of Human Thrombin: Effect on Thrombomodulin Binding." Thrombosis and Haemostasis 59, no. 03 (1988): 415–20. http://dx.doi.org/10.1055/s-0038-1647507.

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SummaryThrombomodulin, an endothelial cell protein, binds thrombin with high affinity and alters thrombin from a procoagulant to an anticoagulant molecule. In this study, chemical and/or proteolytic modification of thrombin was carried out to identify the essential components required for its interaction with thrombomodulin.Modification of thrombin at the catalytic site serine and histidine residues, with Diisopropylfluorophosphate and Tosyl-Llysine chloromethyl ketone, resulted in loss of clotting and amidolytic activity. Both Diisopropyl phosphoryl-thrombin and Tosyl-L-chloromethyl ketone-th
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41

Matsubara, Teruhiko. "Potential of Peptides as Inhibitors and Mimotopes: Selection of Carbohydrate-Mimetic Peptides from Phage Display Libraries." Journal of Nucleic Acids 2012 (2012): 1–15. http://dx.doi.org/10.1155/2012/740982.

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Glycoconjugates play various roles in biological processes. In particular, oligosaccharides on the surface of animal cells are involved in virus infection and cell-cell communication. Inhibitors of carbohydrate-protein interactions are potential antiviral drugs. Several anti-influenza drugs such as oseltamivir and zanamivir are derivatives of sialic acid, which inhibits neuraminidase. However, it is very difficult to prepare a diverse range of sugar derivatives by chemical synthesis or by the isolation of natural products. In addition, the pathogenic capsular polysaccharides of bacteria are ca
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42

Santra, Abhishek, Tamashree Ghosh, and Anup Kumar Misra. "Removal of benzylidene acetal and benzyl ether in carbohydrate derivatives using triethylsilane and Pd/C." Beilstein Journal of Organic Chemistry 9 (January 14, 2013): 74–78. http://dx.doi.org/10.3762/bjoc.9.9.

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Clean deprotection of carbohydrate derivatives containing benzylidene acetals and benzyl ethers was achieved under catalytic transfer hydrogenation conditions by using a combination of triethylsilane and 10% Pd/C in CH3OH at room temperature. A variety of carbohydrate diol derivatives were prepared from their benzylidene derivatives in excellent yield.
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43

Bentourkia, M'hamed, Sébastien Tremblay, Fabien Pifferi, Jacques Rousseau, Roger Lecomte, and Stephen Cunnane. "PET study of 11C-acetoacetate kinetics in rat brain during dietary treatments affecting ketosis." American Journal of Physiology-Endocrinology and Metabolism 296, no. 4 (2009): E796—E801. http://dx.doi.org/10.1152/ajpendo.90644.2008.

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Normally, the brain's fuel is glucose, but during fasting it increasingly relies on ketones (β-hydroxybutyrate, acetoacetate, and acetone) produced in liver mitochondria from fatty acid β-oxidation. Although moderately raised blood ketones produced on a very high fat ketogenic diet have important clinical effects on the brain, including reducing seizures, ketone metabolism by the brain is still poorly understood. The aim of the present work was to assess brain uptake of carbon-11-labeled acetoacetate (11C-acetoacetate) by positron emission tomography (PET) imaging in the intact, living rat. To
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44

Forman, Grant S., Adrian Scaffidi та Robert V. Stick. "An Alternative Synthesis of Some Carbohydrate α-Amino Acids". Australian Journal of Chemistry 57, № 1 (2004): 25. http://dx.doi.org/10.1071/ch03214.

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Several carbohydrate ketones have been converted into their trichloromethyl-branched tertiary alcohols. A subsequent treatment of these alcohols under Corey–Link conditions (base, sodium azide, methanol) has given rise to α-azido esters, transformable into azido acids, amino esters, and amino acids. An amino ester and an azido acid have been coupled to form a dipeptide.
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45

Driver, GE, та JD Stevens. "Septanose Carbohydrates. III. Oxidation-Reduction Products From 1,2-3,4-Di-O-isopropylidene-α-D-glucoseptanose: Preparation of L-Idose Derivatives". Australian Journal of Chemistry 43, № 12 (1990): 2063. http://dx.doi.org/10.1071/ch9902063.

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Oxidation of 1,2:3,4-di-O-isopropylidene-α-D-glucoseptanose (1a) with dimethyl sulfoxide and acetic anhydride has yielded methylthiomethyl ether (1b), ketone (2), and a novel product (3). Reduction of (2) gave (1a) and its L-ido isomer (4a) which yielded the mono-O-isopropylidene compound (5a) on aqueous acid hydrolysis. Treatment of (5a) with acidified acetone gave (4a) and 1,2:4,5-di-O-isopropylidene-β-L- idoseptanose (7a). Reaction of (2) with methylmagnesium iodide yielded the two 5-C-methyl compounds (8) and (9). Hydrolysis of (8) and (9) gave 5-C-methyl-D-glucose (10) and 5-C-methyl-L-id
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46

B., P. SINGH, K. KARMAKAR P., K. D. MAZUMDAR A., and P. BANERJEE K. "Syntheses of some Pyrimido-2-carboxamidopyrazoline Derivatives." Journal of Indian Chemical Society Vol. 69, Jun 1992 (1992): 312–13. https://doi.org/10.5281/zenodo.6004710.

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University Department of Chemistiy,&nbsp;Bhagalpur University, Bhagalpur-812 007 <em>Manuscript received 17 June 1991,&nbsp; revised 10 March 1992, accepted 10 April 1992</em> 2-Acetoacetamidopyrimidine (2), prepared by heating 2-aminopyrimidine and ethyl acetoacetate at 160<sup>&deg;</sup>&nbsp;was converted to pyrimido-2-carboxamide-<strong>&alpha;</strong> \(\beta\)-unsaturated-ketones (4) by the condensation with different aromatic aldehydes. The ketones on refluxing with hydrazine hydrate/phenyl hydrazine produced the title compounds 5 and 6. &nbsp;
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V. Kanchana, L. Mayavan, A. Kistan, and S. Mohan. "SPECTRAL ELUCIDATION, ANTIMICROBIAL AND ANTIOXIDANT STUDY OF NEWLY SYNTHESIZED PYRAZOLINE DERIVATIVES." RASAYAN Journal of Chemistry 17, no. 01 (2024): 281–87. http://dx.doi.org/10.31788/rjc.2024.1718720.

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The preparation of Chalcones and Pyrazoline derivatives from different aromatic ketones and substituted aldehydes is detailed. Chalcones were produced by reacting aldehydes with substituted aromatic ketones, such as acetophenones, in the Claisen-Schmidt condensation reaction. Cyclohexenone derivatives are produced when ethyl aceto aromatic ketones undergo base-catalyzed cyclo-condensation to Chalcones under microwave radiation. The synthesized compounds are characterized using spectrum techniques from 1H NMR, 13C NMR, and IR. These are examined for their antioxidant qualities as well as their
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48

Schilde, Uwe, Alexandra Kelling, Sumaira Umbreen, and Torsten Linker. "Crystal structures of three bicyclic carbohydrate derivatives." Acta Crystallographica Section E Crystallographic Communications 72, no. 12 (2016): 1839–44. http://dx.doi.org/10.1107/s2056989016018727.

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The title compounds, [(1R,3R,4R,5R,6S)-4,5-bis(acetyloxy)-7-oxo-2-oxabicyclo[4.2.0]octan-3-yl]methyl acetate, C14H18O8, (I), [(1S,4R,5S,6R)-5-acetyloxy-7-hydroxyimino-2-oxobicyclo[4.2.0]octan-4-yl acetate, C11H15NO6, (II), and [(3aR,5R,6R,7R,7aS)-6,7-bis(acetyloxy)-2-oxooctahydropyrano[3,2-b]pyrrol-5-yl]methyl acetate, C14H19NO8, (III), are stable bicyclic carbohydrate derivatives. They can easily be synthesized in a few steps from commercially available glycals. As a result of the ring strain from the four-membered rings in (I) and (II), the conformations of the carbohydrates deviate strongly
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Han, Jianlin, Greg Butler, Hiroki Moriwaki, Hiroyuki Konno, Vadim A. Soloshonok, and Tsugio Kitamura. "Kitamura Electrophilic Fluorination Using HF as a Source of Fluorine." Molecules 25, no. 9 (2020): 2116. http://dx.doi.org/10.3390/molecules25092116.

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This review article focused on the innovative procedure for electrophilic fluorination using HF and in situ generation of the required electrophilic species derived from hypervalent iodine compounds. The areas of synthetic application of this approach include fluorination of 1,3-dicarbonyl compounds, aryl-alkyl ketones, styrene derivatives, α,β-unsaturated ketones and alcohols, homoallyl amine and homoallyl alcohol derivatives, 3-butenoic acids and alkynes.
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Cho, Hye Jeong, Jeong Soon You, Kyung Ja Chang, Kyung Soo Kim, and Sung Hoon Kim. "Anti-adipogenic Effect of Taurine-Carbohydrate Derivatives." Bulletin of the Korean Chemical Society 35, no. 6 (2014): 1863–66. http://dx.doi.org/10.5012/bkcs.2014.35.6.1863.

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