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Heterocyclic CompoundsMethaneStereoisomerismCatalysisChemistry, OrganicAlkenesChemistry Techniques, SyntheticCaffeic AcidsPhenylethyl AlcoholQuantitative Structure-Activity RelationshipPropolisChlorogenic AcidEstersMolecular StructureHazardous SubstancesChemical Hazard ReleasePatents as TopicRoboticsOdorsExplosive AgentsSurgery, Computer-AssistedIridiumOrganometallic CompoundsSpectroscopy, Electron Energy-LossPhthalazinesAldehyde OxidaseBenzaldehydesPoly(ADP-ribose) PolymerasesPoly Adenosine Diphosphate RiboseInventionsResearch ReportDatabases, ProteinInternetUser-Computer InterfaceSoftwareArchivesProteinsBooksCuldoscopyMusicMobile ApplicationsBook SelectionBook Reviews as TopicElectrodesElectrochemistryOrganic Chemistry PhenomenaEvolution, ChemicalOrganic Chemistry ProcessesImidazoline ReceptorsIdazoxanReceptors, DrugMetforminAgmatineImidazolesBenzofurans
Heterocyclic Compounds: Ring compounds having atoms other than carbon in their nuclei. (Grant & Hackh's Chemical Dictionary, 5th ed)Methane: The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed)Stereoisomerism: The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Catalysis: The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.Chemistry, Organic: The study of the structure, preparation, properties, and reactions of carbon compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Alkenes: Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)Chemistry Techniques, Synthetic: Methods used for the chemical synthesis of compounds. Included under this heading are laboratory methods used to synthesize a variety of chemicals and drugs.Caffeic Acids: A class of phenolic acids related to chlorogenic acid, p-coumaric acid, vanillic acid, etc., which are found in plant tissues. It is involved in plant growth regulation.Phenylethyl Alcohol: An antimicrobial, antiseptic, and disinfectant that is used also as an aromatic essence and preservative in pharmaceutics and perfumery.Quantitative Structure-Activity Relationship: A quantitative prediction of the biological, ecotoxicological or pharmaceutical activity of a molecule. It is based upon structure and activity information gathered from a series of similar compounds.Propolis: A resinous substance obtained from beehives that is used traditionally as an antimicrobial. It is a heterogeneous mixture of many substances.Chlorogenic Acid: A naturally occurring phenolic acid which is a carcinogenic inhibitor. It has also been shown to prevent paraquat-induced oxidative stress in rats. (From J Chromatogr A 1996;741(2):223-31; Biosci Biotechnol Biochem 1996;60(5):765-68).EstersMolecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Hazardous Substances: Elements, compounds, mixtures, or solutions that are considered severely harmful to human health and the environment. They include substances that are toxic, corrosive, flammable, or explosive.Chemical Hazard Release: Uncontrolled release of a chemical from its containment that either threatens to, or does, cause exposure to a chemical hazard. Such an incident may occur accidentally or deliberately.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Robotics: The application of electronic, computerized control systems to mechanical devices designed to perform human functions. Formerly restricted to industry, but nowadays applied to artificial organs controlled by bionic (bioelectronic) devices, like automated insulin pumps and other prostheses.Odors: The volatile portions of substances perceptible by the sense of smell. (Grant & Hackh's Chemical Dictionary, 5th ed)Explosive Agents: Substances that are energetically unstable and can produce a sudden expansion of the material, called an explosion, which is accompanied by heat, pressure and noise. Other things which have been described as explosive that are not included here are explosive action of laser heating, human performance, sudden epidemiological outbreaks, or fast cell growth.Surgery, Computer-Assisted: Surgical procedures conducted with the aid of computers. This is most frequently used in orthopedic and laparoscopic surgery for implant placement and instrument guidance. Image-guided surgery interactively combines prior CT scans or MRI images with real-time video.Iridium: A metallic element with the atomic symbol Ir, atomic number 77, and atomic weight 192.22.Organometallic Compounds: A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed)Spectroscopy, Electron Energy-Loss: A technique for analysis of the chemical composition of molecules. A substance is bombarded with monochromatic ELECTRONS. Some of the electrons passing through the specimen will lose energy when they ionize inner shell electrons of the atoms in the specimen. The energy loss is element dependent. Analysis of the energy loss spectrum reveals the elemental composition of a specimen. ENERGY-FILTERED TRANSMISSION ELECTRON MICROSCOPY is a type of electron energy loss spectroscopy carried out in electron microscopes specially outfitted to analyze the spectrum of electron energy loss.PhthalazinesAldehyde Oxidase: An aldehyde oxidoreductase expressed predominantly in the LIVER; LUNGS; and KIDNEY. It catalyzes the oxidation of a variety of organic aldehydes and N-heterocyclic compounds to CARBOXYLIC ACIDS, and also oxidizes quinoline and pyridine derivatives. The enzyme utilizes molybdenum cofactor and FAD as cofactors.BenzaldehydesPoly(ADP-ribose) Polymerases: Enzymes that catalyze the transfer of multiple ADP-RIBOSE groups from nicotinamide-adenine dinucleotide (NAD) onto protein targets, thus building up a linear or branched homopolymer of repeating ADP-ribose units i.e., POLY ADENOSINE DIPHOSPHATE RIBOSE.Poly Adenosine Diphosphate Ribose: A polynucleotide formed from the ADP-RIBOSE moiety of nicotinamide-adenine dinucleotide (NAD) by POLY(ADP-RIBOSE) POLYMERASES.Inventions: A novel composition, device, or process, independently conceived de novo or derived from a pre-existing model.Research Report: Detailed account or statement or formal record of data resulting from empirical inquiry.Databases, Protein: Databases containing information about PROTEINS such as AMINO ACID SEQUENCE; PROTEIN CONFORMATION; and other properties.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.User-Computer Interface: The portion of an interactive computer program that issues messages to and receives commands from a user.Software: Sequential operating programs and data which instruct the functioning of a digital computer.ArchivesProteins: Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.BooksCuldoscopy: Endoscopic examination, therapy or surgery of the female pelvic viscera by means of an endoscope introduced into the pelvic cavity through the posterior vaginal fornix.Music: Sound that expresses emotion through rhythm, melody, and harmony.Mobile Applications: Computer programs or software installed on mobile electronic devices which support a wide range of functions and uses which include television, telephone, video, music, word processing, and Internet service.Book SelectionBook Reviews as Topic: Critical analyses of books or other monographic works.Electrodes: Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.Electrochemistry: The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes.Organic Chemistry Phenomena: The conformation, properties, reaction processes, and the properties of the reactions of carbon compounds.Evolution, Chemical: Chemical and physical transformation of the biogenic elements from their nucleosynthesis in stars to their incorporation and subsequent modification in planetary bodies and terrestrial biochemistry. It includes the mechanism of incorporation of biogenic elements into complex molecules and molecular systems, leading up to the origin of life.Organic Chemistry Processes: The reactions, changes in structure and composition, the properties of the reactions of carbon compounds, and the associated energy changes.Imidazoline Receptors: Receptors of CLONIDINE and other IMIDAZOLINES. Activity of the ligands was earlier attributed to ADRENERGIC ALPHA-2 RECEPTORS. Endogenous ligands include AGMATINE, imidazoleacetic acid ribotide, and harman.Idazoxan: A benzodioxane-linked imidazole that has alpha-2 adrenoceptor antagonist activity.Receptors, Drug: Proteins that bind specific drugs with high affinity and trigger intracellular changes influencing the behavior of cells. Drug receptors are generally thought to be receptors for some endogenous substance not otherwise specified.Metformin: A biguanide hypoglycemic agent used in the treatment of non-insulin-dependent diabetes mellitus not responding to dietary modification. Metformin improves glycemic control by improving insulin sensitivity and decreasing intestinal absorption of glucose. (From Martindale, The Extra Pharmacopoeia, 30th ed, p289)Agmatine: Decarboxylated arginine, isolated from several plant and animal sources, e.g., pollen, ergot, herring sperm, octopus muscle.Imidazoles: Compounds containing 1,3-diazole, a five membered aromatic ring containing two nitrogen atoms separated by one of the carbons. Chemically reduced ones include IMIDAZOLINES and IMIDAZOLIDINES. Distinguish from 1,2-diazole (PYRAZOLES).Benzofurans: Compounds that contain a BENZENE ring fused to a furan ring.

Studies on tellurium-containing heterocycles. Part 20. Reactions of 2-benzoselenopyrylium salts and 2-benzotelluropyrylium salts with nucleophiles: formation of 1-functionalized 1H-isoselenochromenes and 1H-isotellurochromenes. (1/8)

The reactions of the 2-benzoselenopyrylium (1A) and 2-benzotelluropyrylium cations (1B) with a variety of nucleophiles have been investigated. LiAlH(4), sodium alkoxide (NaOMe, NaOi-Pr and NaOt-Bu), diethylamine, n-butylamine and acetone reacted with 1 to give the 1H-isochromenes (2) and the corresponding 1-substituted products (4-9) under mild conditions in almost good to high yields. The 1-alkyl(phenyl)isoselenochromenes (10-13) and 1-benzylisochromenes (18A, 18B), which were produced by the reaction of the salts 1 with Grignard reagents, were converted to the corresponding 1,3-disubstituted 2-benzopyrylium salts (14-17, 19) by treatment with triphenylcarbenium tetrafluoroborate (Ph(3)C(+) BF(4)(-)), respectively. The 1-benzylselenopyrylium salts (19A) and 1-benzyltelluropyrylium salts (19B) exist in the solvent as an equilibrium mixture of the salts (19) and the corresponding (Z)-benzylidene compounds (20).  (+info)

Highly regioselective palladium-catalyzed annulation reactions of heteroatom-substituted allenes for synthesis of condensed heterocycles. (2/8)

We have developed a highly regioselective synthesis of heterocycles via palladium-catalyzed annulation reaction of heteroatom-substituted allenes. Various aryl halides were reacted and one regioisomer was observed exclusively in all reactions. In addition, subsequent functionalizations of annulated products were carried out using alkyl metal reagents, and the introduction of alkyl moieties was accomplished.  (+info)

Experimental and theoretical studies on the functionalization reactions of 4-benzoyl-1,5-diphenyl-1H-pyrazole-3-carboxylic acid and acid chloride with 2,3-diaminopyridine. (3/8)

The 1H-pyrazole-3-carboxylic acid 2 was converted in good yield (69%) into the corresponding 1H-pyrazole-3-carboxamide 5 via reaction of the acid chloride 3 with 2,3- diaminopyridine (4). A different product, the 3H-imidazo[4,5-b] pyridine derivative 6, was formed from the reaction of 3 with 4 and base in benzene for 5 hours. The structures of the synthesized compounds were determined spectroscopically. The mechanism of the reaction between 3 and 4 was examined theoretically.  (+info)

Endogenous and synthetic agonists of GPR119 differ in signalling pathways and their effects on insulin secretion in MIN6c4 insulinoma cells. (4/8)

 (+info)

Peptide YY is critical for acylethanolamine receptor Gpr119-induced activation of gastrointestinal mucosal responses. (5/8)

 (+info)

Radioiodination of aryl-alkyl cyclic sulfates. (6/8)

 (+info)

Stimulating beta-cell regeneration by combining a GPR119 agonist with a DPP-IV inhibitor. (7/8)

 (+info)

Synthesis, electrochemistry, and photophysics of a family of phlorin macrocycles that display cooperative fluoride binding. (8/8)

 (+info)

19.18: The Robinson Annulation - Chemistry LibreTexts19.18: The Robinson Annulation - Chemistry LibreTexts
Study Notes. The building of an alicyclic compound from acyclic starting materials can present an interesting challenge to the synthetic organic chemist. One route by which such a synthesis can be achieved is through the use of the Robinson annulation reaction. This reaction, which may at first look very complex, can be readily understood once you realize that it simply involves a Michael reaction followed by an intramolecular aldol condensation. Both of these steps involve attack by enolate anions.. As in some of the other syntheses that you have studied, when you are simply given the structure of a compound and asked how it could have been prepared, it can be difficult to recognize which reactions might have been used. In this instance, keep in mind that you have studied relatively few reactions which have resulted in the formation of an alicyclic compound. Thus, when asked how such a compound might be prepared, you should keep the possibility of using a Robinson annulation reaction in ...
Iron-Catalyzed Aerobic Oxidation and Annulation Reaction of Pyridine and α-Substituted Allenoate toward Functionalized...Iron-Catalyzed Aerobic Oxidation and Annulation Reaction of Pyridine and α-Substituted Allenoate toward Functionalized...
shu.edu.cn. T. Jin, Z. Tang, J. Hu, H. Yuan, Y. Chen, C. Li, X. Jia, J. Li, Org. Lett., 2018, 20, 413-416.. DOI: 10.1021/acs.orglett.7b03696 (free Supporting Information). ...
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Synthesis and reactivity of donor-acceptor substituted aminocyclopropanes and aminocyclobutanes (eBook, 2016) [WorldCat.org]Synthesis and reactivity of donor-acceptor substituted aminocyclopropanes and aminocyclobutanes (eBook, 2016) [WorldCat.org]
Get this from a library! Synthesis and reactivity of donor-acceptor substituted aminocyclopropanes and aminocyclobutanes. [Florian de Nanteuil] -- This thesis presents a general approach to accessing nitrogen-substituted hetero- and carbocycles. In short, the annulation reactions developed in the thesis make it possible to access ...
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Single-molecule photophysics, from cryogenic to ambient conditions - Chemical Society Reviews (RSC Publishing)Single-molecule photophysics, from cryogenic to ambient conditions - Chemical Society Reviews (RSC Publishing)
We review recent progress in characterizing and understanding the photophysics of single molecules in condensed matter, mostly at cryogenic temperatures. We discuss the central role of the triplet state in limiting the number of useful host-guest systems, notably a new channel, intermolecular intersystem cro Single-molecule optical spectroscopy
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Synthesis and biological evaluation of new aryl-alkyl(alkenyl)-4-benzylpiperidines, novel Sigma Receptor (SR) modulators, as...Synthesis and biological evaluation of new aryl-alkyl(alkenyl)-4-benzylpiperidines, novel Sigma Receptor (SR) modulators, as...
TY - JOUR. T1 - Synthesis and biological evaluation of new aryl-alkyl(alkenyl)-4-benzylpiperidines, novel Sigma Receptor (SR) modulators, as potential anticancer-agents. AU - Rui, Marta. AU - Rossi, Daniela. AU - Marra, Annamaria. AU - Paolillo, Mayra. AU - Schinelli, Sergio. AU - Curti, Daniela. AU - Tesei, Anna. AU - Cortesi, Michela. AU - Zamagni, Alice. AU - Laurini, Erik. AU - Pricl, Sabrina. AU - Schepmann, Dirk. AU - Wűnsch, Bernhard. AU - Urban, Ernst. AU - Pace, Vittorio. AU - Collina, Simona. PY - 2016/11/29. Y1 - 2016/11/29. N2 - In the early 2000s, the Sigma Receptor (SR) family was identified as potential "druggable" target in cancer treatment. Indeed, high density of SRs was found in breast, lung, and prostate cancer cells, supporting the idea that SRs could play a role in tumor growth and progression. Moreover, a link between the degree of SR expression and tumor aggressiveness has been postulated, justified by the presence of SRs in high metastatic-potential cancer cells. As a ...
Comparative Photophysics of Platinium(II) and Platinum(IV) Porphyrins<...Comparative Photophysics of Platinium(II) and Platinum(IV) Porphyrins<...
TY - JOUR. T1 - Comparative Photophysics of Platinium(II) and Platinum(IV) Porphyrins. AU - Kim, Dongho. AU - Holten, Dewey. AU - Gouterman, Martin. AU - Buchler, Johann W.. PY - 1984/1/1. Y1 - 1984/1/1. UR - http://www.scopus.com/inward/record.url?scp=85012350988&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=85012350988&partnerID=8YFLogxK. U2 - 10.1021/ja00332a604. DO - 10.1021/ja00332a604. M3 - Article. AN - SCOPUS:85012350988. VL - 106. JO - Journal of the American Chemical Society. JF - Journal of the American Chemical Society. SN - 0002-7863. IS - 20. ER - ...
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CAS No : 247583-69-3| Product Name : Ethyl 1-methyl-5-propyl-1H-pyrazole-3-carboxylate | PharmaffiliatesCAS No : 247583-69-3| Product Name : Ethyl 1-methyl-5-propyl-1H-pyrazole-3-carboxylate | Pharmaffiliates
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Optically active 2,5-disubstituted bicyclo[2.2.2]octa-2,5-dienes (bod) have found use within synthetic organic chemistry as chiral ligands for rhodium asymmetric catalysis reactions. These chiral ligands often provide greater enantioselectivity than their phosphorus-based chiral ligand cousins when employed in the formation of carbon-carbon bonds under rhodium catalysis. The drawback to using these types of 2,5-disubstituted bicyclo[2.2.2]octa-2,5-diene ligands is that they are very expensive to buy if they are commercially available or they must be synthesized if they are not commercially available. Present literature syntheses of these bod ligands rely on the physical separation of diastereomeric derivatives via recrystallization with low recovery or the separation of enantiomers via chiral HPLC, in which only small amounts of material may be separated. We have devised a synthesis of phenyl, benzyl, and methyl substituted bod ligands based on a bridged Robinson annulation reaction of ...
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INORGANIC PHOTOPHYSICS IN SOLUTION .7. LUMINESCENCE KINETICS AND ELECTRON-TRANSFER QUENCHING OF EXCITED BIS(POLYPYRIDYL)...INORGANIC PHOTOPHYSICS IN SOLUTION .7. LUMINESCENCE KINETICS AND ELECTRON-TRANSFER QUENCHING OF EXCITED BIS(POLYPYRIDYL)...
1984) INORGANIC PHOTOPHYSICS IN SOLUTION .7. LUMINESCENCE KINETICS AND ELECTRON-TRANSFER QUENCHING OF EXCITED BIS(POLYPYRIDYL) COMPLEXES OF RUTHENIUM(II). JOURNAL OF CHEMICAL RESEARCH-S (7). 212 ...
2-Aroylquinoline-5,8-diones as potent anticancer agents displaying tubulin and heat shock protein 90 (HSP90) inhibition<...2-Aroylquinoline-5,8-diones as potent anticancer agents displaying tubulin and heat shock protein 90 (HSP90) inhibition<...
TY - JOUR. T1 - 2-Aroylquinoline-5,8-diones as potent anticancer agents displaying tubulin and heat shock protein 90 (HSP90) inhibition. AU - Nepali, Kunal. AU - Kumar, Sunil. AU - Huang, Hsiang Ling. AU - Kuo, Fei Chiao. AU - Lee, Cheng Hsin. AU - Kuo, Ching Chuan. AU - Yeh, Teng Kuang. AU - Li, Yu Hsuan. AU - Chang, Jang Yang. AU - Liou, Jing Ping. AU - Lee, Hsueh Yun. PY - 2015. Y1 - 2015. N2 - This study reports the synthesis of a series of 2-aroylquinoline-5,8-diones (11-23) on the basis of scaffold hopping. The presence of a methoxy group at C6 assists the highly regioselective incorporation with various amines, and simplifies the structural identification process. Among the synthetic compounds, 6-dimethylamino-2-(3,4,5-trimethoxybenzoyl)-quinoline-5,8-dione (12) and 7-pyrrolidin-1-yl-2-(3,4,5-trimethoxybenzoyl)-quinoline-5,8-dione (23) exhibit remarkable anti-proliferative activity against the cancer cell lines tested with mean IC50 values of 0.14 and 0.27 μM, respectively. Compound 23 ...
Polyphosphoric Acid Chloride Paints Leather Guilin - WorldBid B2B MarketPolyphosphoric Acid Chloride Paints Leather Guilin - WorldBid B2B Market
Chemicals - Acids China, Polyphosphoric Acid Chloride Paints Leather, Usage: polyphosphate acid is not only a intermediate chemical products, but also an important chemical products, it is w...
Acid Chloride Nomenclature - Organic Chemistry Video | Clutch PrepAcid Chloride Nomenclature - Organic Chemistry Video | Clutch Prep
Video explaining Acid Chloride Nomenclature for Organic Chemistry. This is one of many videos provided by Clutch Prep to prepare you to succeed in your college
SNAr-Based Cycloetherification Methodology: Application in the Synthesis of Heterodectic Macrocyclic Peptides with Endo Aryl...SNAr-Based Cycloetherification Methodology: Application in the Synthesis of Heterodectic Macrocyclic Peptides with Endo Aryl...
The endo aryl-aryl and aryl-alkyl ether bonds exist in a number of biologically important macrocyclic natural products, such as vancomycin family glycopeptide antibiotics (1, 2, 3), antitumor series...
Arndt-Eistert reaction - WikipediaArndt-Eistert reaction - Wikipedia
The Arndt-Eistert synthesis is a series of chemical reactions designed to convert a carboxylic acid to a higher carboxylic acid homologue (i.e. contains one additional carbon atom) and is considered a homologation process. Named for the German chemists Fritz Arndt (1885-1969) and Bernd Eistert (1902-1978), Arndt-Eistert synthesis is a popular method of producing β-amino acids from α-amino acids. Acid chlorides react with diazomethane to give diazoketones. In the presence of a nucleophile (water) and a metal catalyst (Ag2O), diazoketones will form the desired acid homologue. While the classic Arndt-Eistert synthesis uses thionyl chloride to convert the starting acid to an acid chloride, any procedure can be used that will generate an acid chloride. Diazoketones are typically generated as described here, but other methods such as diazo-group transfer can also apply. Since diazomethane is toxic and violently explosive, many safer alternatives have been developed, such as the usage of ynolates ...
INT18399 - wiki-painINT18399 - wiki-pain
Future studies from us will estimate the effects of this DPP-IV inhibitor on the enzyme activity/expression, as well as on levels of GLP-1 and glucagon, in order to have a more detailed picture of how the incretins pathway is affected and its relative contribution for the effects of sitagliptin here reported ...
DSpace at Saint Petersburg State University: CHEMISTRYDSpace at Saint Petersburg State University: CHEMISTRY
Cyclometallated platinum(II) complexes containing NHC ligands: synthesis, characterization, photophysics and their application as emitters in OLEDs See ...
Palmira F. Silva website | Instituto Superior TécnicoPalmira F. Silva website | Instituto Superior Técnico
Since 2002, my research interests lie in the fields of photochemistry and photophysics. This work encompasses a wide range of related topics, including the determination of fundamental photophysical and kinetic parameters pertaining multiequilibria of anthocyanins in ground and excited states. It is only by having a detailed understanding of all these factors that we can design systems in which we have control over the direction and outcome of photo-induced reactions, such as energy transfer or electron transfer. These processes are studied towards the development of commercially important materials, mainly electroluminescent materials and materials suitable for photovoltaic apllications ...
Five Reasons to Buy an Xbox One | N4GFive Reasons to Buy an Xbox One | N4G
But PSN+ is compulsory for the PS4 like live is for the One so they are in the same boat as they both do the same thing except PSN+ offers the distribution service and Live doesnt. It doesnt matter how you see it as they are in competition with each other. PSN is like the Silver account for the Xbox One ...
Influence of sulphur dioxide on chlorophyll content and catalase activity in some chosen lichen species (Journal Article) |...Influence of sulphur dioxide on chlorophyll content and catalase activity in some chosen lichen species (Journal Article) |...
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; LICHENS; ENZYME ACTIVITY; SULFUR DIOXIDE; BIOLOGICAL EFFECTS; AIR POLLUTION; CATALASE; CHLOROPHYLL; MAIZE; METABOLISM; ALGAE; CARBOXYLIC ACIDS; CEREALS; CHALCOGENIDES; ENZYMES; FUNGI; GRASS; HETEROCYCLIC ACIDS; HETEROCYCLIC COMPOUNDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDES; OXIDOREDUCTASES; OXYGEN COMPOUNDS; PEROXIDASES; PHYTOCHROMES; PIGMENTS; PLANTS; POLLUTION; PORPHYRINS; SULFUR COMPOUNDS; SULFUR OXIDES; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987 ...
3,4-diaminopyridine | definition of 3,4-diaminopyridine by Medical dictionary3,4-diaminopyridine | definition of 3,4-diaminopyridine by Medical dictionary
Looking for online definition of 3,4-diaminopyridine in the Medical Dictionary? 3,4-diaminopyridine explanation free. What is 3,4-diaminopyridine? Meaning of 3,4-diaminopyridine medical term. What does 3,4-diaminopyridine mean?
Design and Synthesis of Novel Thiazolidine and Pyrrolidine Derivatives as DPP-IV InhibitorsDesign and Synthesis of Novel Thiazolidine and Pyrrolidine Derivatives as DPP-IV Inhibitors
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ETHYL 5-(2-FURYL)-1H-PYRAZOLE-3-CARBOXYLATE 34020-22-9 H-NMR | C-NMR Spectral Analysis NMR SpectrumETHYL 5-(2-FURYL)-1H-PYRAZOLE-3-CARBOXYLATE 34020-22-9 H-NMR | C-NMR Spectral Analysis NMR Spectrum
ETHYL 5-(2-FURYL)-1H-PYRAZOLE-3-CARBOXYLATE 34020-22-9 NMR spectrum, ETHYL 5-(2-FURYL)-1H-PYRAZOLE-3-CARBOXYLATE H-NMR spectral analysis, ETHYL 5-(2-FURYL)-1H-PYRAZOLE-3-CARBOXYLATE C-NMR spectral analysis ect.
Chemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureHumanitiesInformation ScienceHealth Care
Heterocyclic CompoundsMethaneStereoisomerismCatalysisChemistry, OrganicAlkenesChemistry Techniques, SyntheticCaffeic AcidsPhenylethyl AlcoholQuantitative Structure-Activity RelationshipPropolisChlorogenic AcidEstersMolecular StructureHazardous SubstancesChemical Hazard ReleasePatents as TopicRoboticsOdorsExplosive AgentsSurgery, Computer-AssistedIridiumOrganometallic CompoundsSpectroscopy, Electron Energy-LossPhthalazinesAldehyde OxidaseBenzaldehydesPoly(ADP-ribose) PolymerasesPoly Adenosine Diphosphate RiboseInventionsResearch ReportDatabases, ProteinInternetUser-Computer InterfaceSoftwareArchivesProteinsBooksCuldoscopyMusicMobile ApplicationsBook SelectionBook Reviews as TopicElectrodesElectrochemistryOrganic Chemistry PhenomenaEvolution, ChemicalOrganic Chemistry ProcessesImidazoline ReceptorsIdazoxanReceptors, DrugMetforminAgmatineImidazolesBenzofurans
Glycol nucleic acidGlycol nucleic acid
Journal of Heterocyclic Chemistry. 8 (5): 827-9. doi:10.1002/jhet.5570080527.. ... Glycol nucleic acid (GNA) is a polymer similar to DNA or RNA but differing in the composition of its "backbone". GNA is not ... Zhang L, Peritz A, Meggers E (March 2005). "A simple glycol nucleic acid". Journal of the American Chemical Society. 127 (12): ... It is possibly the simplest of the nucleic acids, making it a hypothetical precursor to RNA. ...
Benzoin condensationBenzoin condensation
The reaction is catalyzed by a nucleophile such as the cyanide anion or an N-heterocyclic carbene. The reaction product is an ... Cyanohydrins regarded as complex acids". Journal of the Chemical Society, Transactions. 85: 1206-1214. doi:10.1039/CT9048501206 ... In one study, a custom-designed N-heterocyclic carbene (NHC, the framework is related to thiazolium salts) was found to ... These compounds are important in the synthesis of heterocyclic compounds. The addition is also possible with enones; for ...
Edward AbrahamEdward Abraham
Hale, C. W.; Newton, G. G. F.; Abraham, E. P. (1 May 1961). "Derivatives of cephalosporin C formed with certain heterocyclic ... Abraham showed that modification of the 7-amino-cephalosporanic acid nucleus was able to increase the potency of this ... Loder, Bronwen; Newton, G. G. F.; Abraham, E. P. (1 May 1961). "The cephalosporin C nucleus (7-aminocephalosporanic acid) and ... a New Antibiotic containing Sulphur and D-α-Aminoadipic Acid". Nature. 175 (4456): 548-548. doi:10.1038/175548a0. "Obituary: ...
AluminiumAluminium
This allows aluminium to be used to store reagents such as nitric acid, concentrated sulfuric acid, and some organic acids.[10] ... There are also some heterocyclic and cluster organoaluminium compounds involving Al-N bonds.[43] ... Van Ginkel, M.F.; Van Der Voet, G.B.; D'haese, P.C.; De Broe, M.E.; De Wolff, F.A. (1993). "Effect of citric acid and maltol on ... Oxidizing acids do not effectively attack high-purity aluminium because an oxide layer forms and protects the metal; aqua regia ...
GrepafloxacinGrepafloxacin
"Synthesis of 5-methyl-4-oxo-quinolinecarboxylic acids". Journal of Heterocyclic Chemistry. 27 (6): 1609. doi:10.1002/jhet. ... aqueous acid then hydrolyzes the oxazoline to afford the free acid (6). This last intermediate is then taken on to the ... The scheme starts with the conversion of the carboxylic acid in (1) to its dimethyloxazoline derivative (3) by reaction with ... 8-trisubstituted-6-fluoroquinoline-3-carboxylic acids". Journal of Medicinal Chemistry. 34 (3): 1155. doi:10.1021/jm00107a040. ...
Edmund KornfeldEdmund Kornfeld
The Total Synthesis of Lysergic Acid. Edmund C. Kornfeld, E. J. Fornefeld, G. Bruce Kline, Marjorie J. Mann, Dwight E. Morrison ... Condensation of heterocyclic bases with acetylene dicarboxylic ester. Publisher: Harvard University, 1945. ... The purification method employed during that time utilised picric acid - a potentially explosive chemical; because of this an ... "The Total Synthesis of Lysergic Acid". Journal of the American Chemical Society 78: 3087-3114. L. Esposito, Anthony. "That ...
Bucherer-Bergs reactionBucherer-Bergs reaction
are important heterocyclic scaffolds that induce biological effects. are useful precursors to amino acids, e. g. methionine. ... An example taken from "Name Reactions: Heterocyclic Chemistry" by Jie Jack Li shows a case of stereospecificity in the Bucherer ... For comparison, the amino acid product for the Strecker synthesis has also been included. The hydantoins formed by the Bucherer ... 5,5-diphenylhydantoin, also known as Dilantin) Urech hydantoin synthesis Strecker amino acid synthesis Bucherer, H. T.; ...
PDE3 inhibitorPDE3 inhibitor
An adjacent acid proton. A small sized alkyl substituent on the heterocyclic ring. A relatively flat overall topography. An ... The heterocycle region: Within each heterocycle there is the presence of a dipole and an adjacent acid proton (an amide ... Alkyl groups, limited to either methyl or ethyl, on the heterocyclic ring usually enhance potency, with occasional exceptions. ... A large number of heterocyclic compounds have been synthesized during related research. These compounds constitute a second ...
IndolIndol
Katritzky A.R., Pozharskii A.F. (2000). Handbook of Heterocyclic Chemistry. Academic Press. ISBN 0080429882. ... 2012). "ChEMBL: a large-scale bioactivity database for drug discovery". Nucleic Acids Res 40 (Database issue): D1100-7. PMID ... Joule, J. A.; Mills, K. (2000). Heterocyclic Chemistry. Oxford, UK: Blackwell Science. ISBN 0-632-05453-0. ...
IndoxylIndoxyl
Obermayer's reagent is a dilute solution FeCl3 in hydrochloric acid. Katritzky, A. R.; Pozharskii, A. F. (2000). Handbook of ... Heterocyclic Chemistry (2nd ed.). Academic Press. ISBN 0080429882. Clayden, J.; Greeves, N.; Warren, S.; Wothers, P. (2001). ...
Soy sauceSoy sauce
Alcohols, acids, esters, aldehydes, ketones, phenols, heterocyclic compounds, alkynes and benzenes are identified in Chinese ... Based on the result of free amino acid analysis, the most abundant amino acids in Chinese soy sauce product are glutamic acid, ... Acid-hydrolyzed vegetable protein[edit]. Some brands of soy sauce are made from acid-hydrolyzed soy protein instead of brewed ... Lactic acid bacteria ferments the sugars into lactic acid and yeast makes ethanol, which through aging and secondary ...
1,2,4-Triazole1,2,4-Triazole
... oxydation of thiol by nitric acid yelds 1,2,4-triazole. The ring structure appears in certain N-heterocyclic carbenes. Used in ... Unsubstituted 1,2,4-triazole can be prepared from thiosemicarbazide by acyation with formic acid and subsequent cyclization of ...
Streptomyces amakusaensisStreptomyces amakusaensis
Bycroft, Matthew; Herbert, Richard B.; Ellames, George J. (1996). "Heterocyclic ?-hydroxy-?-amino acids as substrates for a ... Herbert, Richard B.; Wilkinson, Barrie; Ellames, George J. (1994). "Preparation of (2R,3S)-β-hydroxy-α-amino acids by use of a ...
BiotinBiotin
... is a heterocyclic, S-containing monocarboxylic acid. It is made from two precursors, alanine and pimeloyl-CoA via three ... A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring. Biotin is a coenzyme for ... 7,8Diaminopelargonic acid (DAPA) aminotransferase is unusual in using S-adenosyl methionine (SAM) as the NH2 donor. ... 8-Amino-7-oxopelargonic acid synthase is a pyridoxal 5'-phosphate enzyme. The pimeloyl-CoA, could be produced by a modified ...
ThiolactoneThiolactone
... s can be hydrolyzed back to the thiol acids under basic conditions. β-Thiolactones can be opened by reaction at the ... Thiolactones are a class of heterocyclic compounds in organic chemistry. They are analogs of the more common lactones in which ... Thiolactones can be prepared by dehydration of thiol-containing carboxylic acids. ...
Edwards equationEdwards equation
This observation led Pearson to develop his hard-soft acid-base theory, which is arguably the most important contribution that ... Hudson, Michael J.; Laurence M. Harwood; Dominic M. Laventine; Frank W. Lewis (2013). "Use of Soft Heterocyclic N‑Donor Ligands ... Pearson, Ralph G. (1963). "Hard and Soft Acids and Bases". J. Am. Chem. Soc. 85 (22): 3533-3539. doi:10.1021/ja00905a001. ... Yingst, Austin; MacDaniel, Darl H. (1967). "Use of the Edwards Equation to Determine Hardness of Acids". Inorganic Chemistry. 6 ...
Organic chemistryOrganic chemistry
Heterocyclic compounds. Main article: Heterocyclic compound. The characteristics of the cyclic hydrocarbons are again altered ... The family of carboxylic acids contains a carboxyl (-COOH) functional group. Acetic acid, shown here, is an example. ... Thus, the informally named lysergic acid diethylamide is systematically named (6aR,9R)-N,N-diethyl-7-methyl-4,6,6a,7,8,9- ... The heteroatom of heterocyclic molecules is generally oxygen, sulfur, or nitrogen, with the latter being particularly common in ...
1,4,2-Dithiazole1,4,2-Dithiazole
... is a heterocyclic compound consisting of an unsaturated five-membered ring containing two carbon atoms, one ... These compounds may be protonated by strong acids to give synthetically useful aromatic cations. Argyropoulos, Nikolaos G. ( ... 1996). "1,4-Oxa/thia-2-azoles". Comprehensive Heterocyclic Chemistry II: 491-543. doi:10.1016/B978-008096518-5.00092-7. ISBN ...
Pudovik reactionPudovik reaction
Ali, Tarik E.; Abdel-Kariem, Somaia M. (2015). "Methods for the synthesis of α-heterocyclic/heteroaryl-α-aminophosphonic acids ... 1952). "Новый метод синтеза сс-аминофосфиновых кислот" [A new method for the synthesis of α-amino phosphoric acids]. Doklady ... Fields, Ellis K. (1952). "The synthesis of esters of substituted amino phosphonic acids". Journal of the American Chemical ...
AzetidineAzetidine
... is a saturated heterocyclic organic compound containing three carbon atoms and one nitrogen atom. It is a liquid at ... Notably, they are a key component of mugineic acids and penaresidins. Perhaps the most abundant azetidine containing natural ... Azete, the unsaturated analog Bansal, R.K. "Heterocyclic Chemistry" 3rd Ed. 1999, p. 96 ChemSynthesis. ... product is azetidine-2-carboxylic acid, a non-proteinogenic homolog of proline. ...
GrillingGrilling
Heterocyclic amines (HCAs) are formed when amino acids, sugars, and creatine react at high temperatures. Polycyclic aromatic ... Sugimura, Takashi; Wakabayashi, Keiji; Nakagama, Hitoshi; Nagao, Minako (April 2004). "Heterocyclic amines: Mutagens/ ... and fish at high temperatures can lead to the formation of heterocyclic amines, benzopyrenes, and polycyclic aromatic ...
ThianthreneThianthrene
... is a sulfur-containing heterocyclic chemical compound. It is a derivative of the parent heterocycle called dithiin ... Thianthrene is oxidized by sulfuric acid forming a red radical cation. Thianthrene•+ has been characterized by Electron ... "Molecular shapes of thianthrene and related heterocyclic compounds". Acta Crystallographica. 16 (4): 310-312. doi:10.1107/ ...
ProlaminProlamin
For the heterocyclic compound, see Pyrrolidine.. Prolamins are a group of plant storage proteins having a high proline content ... light acids, and alkaline solution. They do not coagulate in heat. They hydrolyse into prolin and ammonia. Some prolamins, ...
BoroxineBoroxine
These compounds are solids that are usually in equilibrium with their respective boronic acids at room temperature. Beside ... Boroxine (B3H3O3) is a 6-membered, heterocyclic compound composed of alternating oxygen and singly-hydrogenated boron atoms. ... As discovered in the 1930s, boroxines are produced from their corresponding boronic acids by dehydration. This dehydration can ... Hall, Dennis G. (2005). Boronic Acids - Preparation and Applications in Organic Synthesis and Medicine. John Wiley & Sons ISBN ...
PteridinePteridine
The enzyme dihydropteroate synthetase converts pteridine and 4-aminobenzoic acid to dihydrofolic acid in the presence of ... A pteridine is also a group of heterocyclic compounds containing a wide variety of substitutions on this structure. Pterins and ... Pteridine is a precursor in the synthesis of dihydrofolic acid in many microorganisms. ...
OxazolineOxazoline
Aminomethyl propanol is the classical precursor to oxazolines using acid chloride method.[12] As applied to fatty acids, the ... Oxazoline is a five-membered heterocyclic chemical compound containing one atom each of oxygen and nitrogen. It was likely ... From carboxylic acids[edit]. Modification of the Appel reaction allows for the synthesis of oxazoline rings.[13] This method ... From acid chlorides[edit]. A routine route to oxazolines entails reactions of acyl chlorides with 2-amino alcohols. Thionyl ...
Chemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureHumanitiesInformation ScienceHealth Care
Heterocyclic CompoundsMethaneStereoisomerismCatalysisChemistry, OrganicAlkenesChemistry Techniques, SyntheticCaffeic AcidsPhenylethyl AlcoholQuantitative Structure-Activity RelationshipPropolisChlorogenic AcidEstersMolecular StructureHazardous SubstancesChemical Hazard ReleasePatents as TopicRoboticsOdorsExplosive AgentsSurgery, Computer-AssistedIridiumOrganometallic CompoundsSpectroscopy, Electron Energy-LossPhthalazinesAldehyde OxidaseBenzaldehydesPoly(ADP-ribose) PolymerasesPoly Adenosine Diphosphate RiboseInventionsResearch ReportDatabases, ProteinInternetUser-Computer InterfaceSoftwareArchivesProteinsBooksCuldoscopyMusicMobile ApplicationsBook SelectionBook Reviews as TopicElectrodesElectrochemistryOrganic Chemistry PhenomenaEvolution, ChemicalOrganic Chemistry ProcessesImidazoline ReceptorsIdazoxanReceptors, DrugMetforminAgmatineImidazolesBenzofurans
Synthesis, Evaluation of Anticancer Activity and QSAR Study of Heterocyclic Esters of Caffeic AcidSynthesis, Evaluation of Anticancer Activity and QSAR Study of Heterocyclic Esters of Caffeic Acid
A group of heterocyclic esters of caffeic acid was synthesized using Mitsunobu reaction and the esters were subjected to ... HeLa cells showed the highest sensitivity to the compounds and heterocyclic esters with no substituent on catechol ring showed ... Both heterocycle esters of caffeic acid and their arylsulfonyl derivatives were evaluated for their cytotoxic activity against ... Caffeic acid phenethyl ester(CAPE) suppresses the growth of transformed cells such as human breast cancer cells, ...
ijpr.sbmu.ac.ir
Amino esters of heterocyclic dicarboxylic acids | SpringerLinkAmino esters of heterocyclic dicarboxylic acids | SpringerLink
8-tetracyanoquinodimethane were obtained by the condensation of the acid dichlorides of furan-2,5-dicarboxylic acid and... ... 5-dicarboxylic acid and tetrahydrothiophene-2,5-dicarboxylic acid with 8-hydroxy- and 5,7-dibromo-8-hydroxyquinolines. Almost ... Ester Organic Chemistry Antimicrobial Activity Dicarboxylic Acid Dichloride Translated from Khimiya Geterotsiklicheskikh ... 8-tetracyanoquinodimethane were obtained by the condensation of the acid dichlorides of furan-2, ...
link.springer.com
Acids, Heterocyclic | Harvard Catalyst Profiles | Harvard CatalystAcids, Heterocyclic | Harvard Catalyst Profiles | Harvard Catalyst
Heterocyclic" by people in Harvard Catalyst Profiles by year, and whether "Acids, Heterocyclic" was a major or minor topic of ... "Acids, Heterocyclic" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... Below are the most recent publications written about "Acids, Heterocyclic" by people in Profiles. ... Below are MeSH descriptors whose meaning is more general than "Acids, Heterocyclic". ...
connects.catalyst.harvard.edu
N-linked sulfonamides of N-heterocyclic carboxylic acids or carboxylic acid isosteres - Guilford Pharmaceuticals Inc.N-linked sulfonamides of N-heterocyclic carboxylic acids or carboxylic acid isosteres - Guilford Pharmaceuticals Inc.
This invention relates to novel N-linked sulfonamides of N-heterocyclic carboxylic acid and carboxylic acid isosteres, their ... A carboxylic acid or carboxylic acid isostere of an N-heterocyclic ring or a pharmaceutical composition comprising the same is ... A carboxylic acid or carboxylic acid isostere of an N-heterocyclic ring or a pharmaceutical composition comprising the same is ... N-linked sulfonamides of N-heterocyclic carboxylic acids or carboxylic acid isosteres ...
freepatentsonline.com
Naphthenic and heterocyclic retinoic acid analogues - Patent # 4456618 - PatentGeniusNaphthenic and heterocyclic retinoic acid analogues - Patent # 4456618 - PatentGenius
2-naphthoic acid, (E)-1-(5-carbethoxy-2-furanyl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1- yl)-1,3-butadiene, (E)-1-(5- ... Naphthenic and heterocyclic retinoic acid analogues such as (E)-6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2- ... Naphthenic and heterocyclic retinoic acid analogues such as (E)-6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2- ... A principal object of this invention is to provide new naphthenic and heterocyclic retinoic acid analogues that are ...
patentgenius.com
US Patent # 8,143,423. N-heterocyclic carbene (NHC) catalyzed synthesis of hydroxamic acids - Patents.comUS Patent # 8,143,423. N-heterocyclic carbene (NHC) catalyzed synthesis of hydroxamic acids - Patents.com
The process comprises reacting an aldehyde with a nitroso compound in the presence of a N-heterocyclic carbene (NHC) catalyst. ... A process for preparing hydroxamic acids is provided. ... C. Hydroxamic Acid In an embodiment of the present invention, ... N-heterocyclic carbene (NHC) catalyzed synthesis of hydroxamic acids Abstract. A process for preparing hydroxamic acids is ... Yields above 75% of the corresponding hydroxamic acids for a variety of aryl, alkyl, alkenyl, and heterocyclic aldehydes were ...
patents.com
R&d laboratory of heterocyclic amino acids synthesisR&d laboratory of heterocyclic amino acids synthesis
... R&D Laboratory of «Heterocyclic amino acids» was found in 2009 at the ... a-amino acids of various nature and structure with heterocyclic radicals, to synthesize new heterocycle substituted amino acids ... Development of asymmetric synthesis methods for new optically active (S)- and (R)-a-amino acids containing heterocyclic rings ... to study asymmetric condensation reactions of heterocyclic electrophilic agents with amino acid complexes generating ...
ysu.am
New 2H-Azirin-3-amines as Synthons for Sulfur-Heterocyclic α-Amino Acids - Zurich Open Repository and ArchiveNew 2H-Azirin-3-amines as Synthons for Sulfur-Heterocyclic α-Amino Acids - Zurich Open Repository and Archive
Download PDF New 2H-Azirin-3-amines as Synthons for Sulfur-Heterocyclic α-Amino Acids. Item availability may be restricted. ... New 2H-Azirin-3-amines as Synthons for Sulfur-Heterocyclic α-Amino Acids ... New 2H-Azirin-3-amines as Synthons for Sulfur-Heterocyclic α-Amino Acids. Phosphorus, Sulfur and Silicon and the Related ... were prepared and successfully used for the synthesis of oligopeptides containing sulfur-heterocyclic α-amino acids via the ...
zora.uzh.ch
Synthesis and characterization of Au(I) and Au(III) complexes containing N-heterocyclic carbene ligands derived from amino...Synthesis and characterization of Au(I) and Au(III) complexes containing N-heterocyclic carbene ligands derived from amino...
... complexes containing N-heterocyclic carbene ligands derived from amino acids.. Alvarado Rodríguez, José Guadalupe. 2014 ... complexes containing N-heterocyclic carbene ligands derived from amino acids. Mario A. Reynoso-Esparza, Irma I. Rangel-Salas, A ...
uaeh.edu.mx
WO1985002847A1 - Carbocyclic and heterocyclic carbon acid esters and amides of nitrogenous or non nitrogenous bridged or...WO1985002847A1 - Carbocyclic and heterocyclic carbon acid esters and amides of nitrogenous or non nitrogenous bridged or...
hydrochloric acid, malonic acid, hydrobromic acid, maleic acid, malic acid, fumaric acid, methanesulfonic acid, oxalic acid and ... Aromatic esters or amides of carboxylic acid and sulfonic acid EP0765924B1 (en) * 1992-07-10. 2002-05-22. E.I. Du Pont De ... Carbocyclic and heterocyclic carbon acid esters and amides of nitrogenous or non nitrogenous bridged or unbridged amines or ... Carbocyclic and heterocyclic carbon acid esters and amides of nitrogenous or non nitrogenous bridged or unbridged amines or ...
patents.google.com
31. N-Heterocyclic Carbene Catalyzed Photoenolization/Diels-Alder Reaction of Acid Fluorides • Hopkinson Group • Department of...31. N-Heterocyclic Carbene Catalyzed Photoenolization/Diels-Alder Reaction of Acid Fluorides • Hopkinson Group • Department of...
N-Heterocyclic Carbene Catalyzed Photoenolization/Diels-Alder Reaction of Acid Fluorides. N-Heterocyclic Carbene-Catalyzed ... The combination of light activation and N-heterocyclic carbene (NHC) organocatalysis has enabled acid fluoride substrates to ...
bcp.fu-berlin.de
N-Heterocyclic Carbene/Brønsted Acid Cooperative Catalysis as a Powerful Tool in Organic SynthesisN-Heterocyclic Carbene/Brønsted Acid Cooperative Catalysis as a Powerful Tool in Organic Synthesis
... News Aug 25, 2012 ... This Commentary will briefly highlight the concept of N-heterocyclic carbene/Brønsted acid cooperative catalysis as a new and ... The recent successful combination of Brønsted acids with NHCs has added a new dimension to the field of cooperative catalysis, ... The interplay between metals and N-heterocyclic carbenes (NHCs) has provided a window of opportunities for the development of ...
technologynetworks.com
Controlled β-protonation and [4+2] cycloaddition of enals and chalcones via N-heterocyclic carbene/acid catalysis : toward...Controlled β-protonation and [4+2] cycloaddition of enals and chalcones via N-heterocyclic carbene/acid catalysis : toward...
Controlled β-protonation and [4+2] cycloaddition of enals and chalcones via N-heterocyclic carbene/acid catalysis : toward ... cycloaddition of enals and chalcones via N-heterocyclic carbene/acid catalysis: toward substrate independent reaction control. ... Acid co-catalysts play vital roles in control of the reaction pathways, allowing for individual access to diverse products from ...
dr.ntu.edu.sg
Heterocyclic Chemistry: SYNTHESIS OF 3-HydroxyCinchoninic acidHeterocyclic Chemistry: SYNTHESIS OF 3-HydroxyCinchoninic acid
After the workup the 3-hydroxycinchoninic acid is isolated as a yellow solid(60-71%).. For more information:. Organic Syntheses ... The synthesis of the 3-hydroxycinchoninic acid has been performed with the reaction a commercially available isatin in presence ... of chloropyruvic acid (previously synthesized from pyruvic acid and sulfuryl chloride in 95-98% Yield.) in a aqueous potassium ...
hetchem.blogspot.com
Benzene Substitutions|Heterocyclics|Boronic Acid|Other Chemicals--ChemiKBenzene Substitutions|Heterocyclics|Boronic Acid|Other Chemicals--ChemiK
Our core strengh chemistry includes Substituted benzene rings and heterocyclics. We have over 1,000 products listed on our ...
chemik.com
Электронный научный архив УрФУ: Triacetic acid lactone in the synthesis of heterocyclic compoundsЭлектронный научный архив УрФУ: Triacetic acid lactone in the synthesis of heterocyclic compounds
Triacetic acid lactone in the synthesis of heterocyclic compounds - Institutional repository of Federal State Autonomous ... Triacetic acid lactone in the synthesis of heterocyclic compounds. Authors: El-Tantawy, A. I.. Obydennov, D. L.. Sosnovskikh, V ... El-Tantawy A. I. Triacetic acid lactone in the synthesis of heterocyclic compounds / A. I. El-Tantawy, D. L. Obydennov, V. Ya. ...
elar.urfu.ru
Quality preparation of heterocyclic compounds - buy from 168 preparation of heterocyclic compoundsQuality preparation of heterocyclic compounds - buy from 168 preparation of heterocyclic compounds
168 preparation of heterocyclic compounds suppliers & manufacturers from China. ... Buy preparation of heterocyclic compounds from China preparation of heterocyclic compounds suppliers - ... Home > Products > organic chemicals > heterocyclic compounds > Acid n-butyl Send date2010-11-03 08:59 Visitor5 CAS Reference ... Assay 99% 4-Aminopyridine Heterocyclic CAS 504-24-5 EINECS 207-987-9 Avitrol 200 Product Description 4- aminopyridine, white ...
phrmg.org
NDL India: Studies On The Complexes Of Transition Metals With Amino Acids And Heterocyclic AminesNDL India: Studies On The Complexes Of Transition Metals With Amino Acids And Heterocyclic Amines
Studies On The Complexes Of Transition Metals With Amino Acids And Heterocyclic Amines Studies On The Complexes Of Transition ...
ndl.iitkgp.ac.in
What are the heterocyclic compounds in nucleic acids? - CBSE Class 11 Biology - Learn CBSE ForumWhat are the heterocyclic compounds in nucleic acids? - CBSE Class 11 Biology - Learn CBSE Forum
The heterocyclic compounds in nucleic acids are of two types - purines and pyrimidines. Purines are adenine and guanine and ... What are the heterocyclic compounds in nucleic acids? CBSE Class 11 CBSE Class 11 Biology ... The heterocyclic compounds in nucleic acids are of two types - purines and pyrimidines. Purines are adenine and guanine and ...
ask.learncbse.in
CPC Definition - C07D HETEROCYCLIC COMPOUNDSCPC Definition - C07D HETEROCYCLIC COMPOUNDS
Heterocyclic compounds in which a 4-thia-1-azabicyclo[3.2.0]heptane ring system is substituted with a carbonic acid-acylated ... but only as the cations of heterocyclic organic acid salts, alcoholates, phenolates or mercaptides, or as chelating atoms, e.g ... Heterocyclic. Wherein at least one ring member in a molecule containing a ring of atoms is not a carbon atom. For the purposes ... and in which position 3 is substituted with a heterocyclic ring or a condensed heterocyclic ring. ...
uspto.gov
Patent US6631333 - Methods for remote characterization of an odor - Google PatentsPatent US6631333 - Methods for remote characterization of an odor - Google Patents
poly(furantetracarboxylic acid. heterocyclic polymers. diimides), poly(benzoxazoles),. poly(oxadiazoles),. poly( ... The oxidation of pyrrole by phosphomolybdic acid represents such a system. In this reaction, the phosphomolybdic acid and ... Such insulators would include main-chain carbon polymers, main chain acyclic heteroatom polymers, main-chain heterocyclic ... fatty acids and derivatives, etc. Accordingly, commercial applications of the sensors, arrays and noses include environmental ...
google.com
Reactions and Syntheses: In the Organic Chemistry Laboratory, 2nd, Completely Revised and Updated Edition | Methods - Synthesis...Reactions and Syntheses: In the Organic Chemistry Laboratory, 2nd, Completely Revised and Updated Edition | Methods - Synthesis...
Other Heterocyclic Systems;. Heterocyclic Dyes. SELECTED NATURAL PRODUCTS. Isoprenoids. Carbohydrates. Amino Acids and Peptides ... HETEROCYCLIC COMPOUNDS. Three- and Four-Membered Heterocycles Five-Membered Heterocycles. Six-Membered Heterocycles. Condensed ... Alkylation of Aldehydes/Ketones, Carboxylic Acids, and beta-Dicarbonyl Compounds. Reactions of the Aldol and Mannich Type. ... Nucleophilic Addition to Aldehydes, Ketones, Carboxylic Acid Derivatives (Esters, Anhydrides) and alpha,beta-Unsaturated ...
wiley.com
Glycol nucleic acid - WikipediaGlycol nucleic acid - Wikipedia
Journal of Heterocyclic Chemistry. 8 (5): 827-9. doi:10.1002/jhet.5570080527.. ... Glycol nucleic acid (GNA) is a polymer similar to DNA or RNA but differing in the composition of its "backbone". GNA is not ... Zhang L, Peritz A, Meggers E (March 2005). "A simple glycol nucleic acid". Journal of the American Chemical Society. 127 (12): ... It is possibly the simplest of the nucleic acids, making it a hypothetical precursor to RNA. ...
en.wikipedia.org
Stable luminescent iridium( iii ) complexes with bis(N-heterocyclic carbene) ligands: photo-stability, excited state properties...Stable luminescent iridium( iii ) complexes with bis(N-heterocyclic carbene) ligands: photo-stability, excited state properties...
The yield of cyclization of B1 was improved to up to 90% (entry 5, Table 3) when formic acid was added and 6Hb was used as a ... 1) with ascorbic acid as reductant, but both the substrate conversion and product yield were low. The use of ... Stable luminescent iridium(III) complexes with bis(N-heterocyclic carbene) ligands: photo-stability, excited state properties, ... N-heterocyclic carbene) (bis-NHC) ligands has been synthesized. These complexes display strong emission in deaerated solutions ...
pubs.rsc.org
Patent US6903098 - Use of phthalazine derivatives - Google PatentsPatent US6903098 - Use of phthalazine derivatives - Google Patents
Heterocyclic oxophthalazinyl acetic acids. EP0722936A1. Aug 8, 1995. Jul 24, 1996. Eisai Co., Ltd.. Fused pyridazine compound. ... citric acid, tartaric acid, lactic acid, phosphoric acid, methanesulfonic acid, acetic acid, formic acid, maleic acid, fumaric ... which can be obtained by reacting compounds I with a suitable acid or base. Examples of suitable acids and bases are listed in ... Lipoic acid and nitroxide derivatives and uses thereof. WO2012074840A2 *. Nov 22, 2011. Jun 7, 2012. The General Hospital ...
google.com
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Heterocyclic CompoundsMethaneStereoisomerismCatalysisChemistry, OrganicAlkenesChemistry Techniques, SyntheticCaffeic AcidsPhenylethyl AlcoholQuantitative Structure-Activity RelationshipPropolisChlorogenic AcidEstersMolecular StructureHazardous SubstancesChemical Hazard ReleasePatents as TopicRoboticsOdorsExplosive AgentsSurgery, Computer-AssistedIridiumOrganometallic CompoundsSpectroscopy, Electron Energy-LossPhthalazinesAldehyde OxidaseBenzaldehydesPoly(ADP-ribose) PolymerasesPoly Adenosine Diphosphate RiboseInventionsResearch ReportDatabases, ProteinInternetUser-Computer InterfaceSoftwareArchivesProteinsBooksCuldoscopyMusicMobile ApplicationsBook SelectionBook Reviews as TopicElectrodesElectrochemistryOrganic Chemistry PhenomenaEvolution, ChemicalOrganic Chemistry ProcessesImidazoline ReceptorsIdazoxanReceptors, DrugMetforminAgmatineImidazolesBenzofurans
Journal of Heterocyclic ChemistryAminesNucleicCarboxylic acidCatalysisChemistry of Heterocyclic CompoundsAmineLigandsComplexesPeptidesSynthesis of heterocyclicAldehydes and KetonesCarbenesAlcoholsReactionsFattyCondensationSaltsAnaloguesReactionAmino acidBoronic AcidOxidationRadicalsEnzymesSubstancesDyesAsymmetric synthesisSynonymsPeptideAssayMeSH
Journal of Heterocyclic Chemistry1
Amines3
  • Since oxadiazolediamines with ether links are designed to develop flexible aromatic polyimides [ 16 , 17 ], postpolymer modification of specific carboxylic acid pendant polymers is easily performed by oxadiazole amines via mild reaction conditions, which effectively tunes the dielectric properties of the resulting polymers for specialized applications [ 18 , 19 ]. (mdpi.com)
  • Ligands could be 17- β -estradiol (E2), phytoestrogens, heterocyclic amines, and many other identified food additives and heavy metals. (hindawi.com)
  • This invention relates to substituted pyridines prepared by reacting aldehydes, amines, lower carboxylic acids such as acetic acid in the presence of oxygen. (google.es)
Nucleic13
Carboxylic acid10
Catalysis3
Chemistry of Heterocyclic Compounds1
Amine1
Ligands1
  • These modified amino acids often contribute to special biological activity, and are often incorporate into therapeutic peptidomimetic ligands for enhance peptide pharmacological activity and potency. (biosyn.com)
Complexes1
  • The corresponding amino esters and their complexes with 7,7,8,8-tetracyanoquinodimethane were obtained by the condensation of the acid dichlorides of furan-2,5-dicarboxylic acid and tetrahydrothiophene-2,5-dicarboxylic acid with 8-hydroxy- and 5,7-dibromo-8-hydroxyquinolines. (springer.com)
Peptides2
  • Hence, while individual heterocycle-containing amino acids are classified in this subclass C07D , peptides are generally classified in subclass C07K . (uspto.gov)
  • Natural occurring unusual amino acids such as citrulline (Cit), hydroxyproline (Hyp), beta-alanine, ornithine (Orn), norleucine (Nle), 3-nitrotyrosine, pyroglutamic acid (Pyr), nitroarginine are also routinely incorporated to our peptides. (biosyn.com)
Synthesis of heterocyclic2
Aldehydes and Ketones1
Carbenes1
Alcohols5
Reactions4
Fatty10
  • Coenzyme A (CoA, CoASH, or HSCoA) is a coenzyme, notable for its role in the synthesis and oxidation of fatty acids, and the oxidation of pyruvate in the citric acid cycle. (rcsb.org)
  • A vitamin-like, C 8 thia fatty acid with anti-oxidant properties. (ebi.ac.uk)
  • Furan fatty acids - Beneficial or harmful to health? (lipidmaps.org)
  • (EN) This disclosure relates to the surprising and unexpected finding that the well-known cancer protein, Myeloid Cell Leukemia-1 (MCL-1), binds to and modulates the enzymatic activity of Very Long Chain Acyl CoA Dehydrogenase (VLCAD), thereby regulating fatty acid β-oxidation. (wipo.int)
  • What is the role of omega fatty acids in the etiology of prostate cancer? (medscape.com)
  • Much attention has been devoted to the benefits of the omega-3 and the deleterious effects of the omega-6 long-chain unsaturated fatty acids. (medscape.com)
  • The marine omega-3 fatty acids are potent antioxidants that have demonstrated a beneficial effect in the development of prostate cancer, in animal and epidemiologic studies. (medscape.com)
  • Whether the omega-3 fatty acids themselves or the ratio between omega-3 and omega-6 is important has not been elucidated. (medscape.com)
  • [ 29 , 30 ] Multiple studies of omega-3 fatty acids and heart health are being conducted, and their results and secondary endpoints should provide more clarity in the area of cancer research. (medscape.com)
  • Although marine sources of omega-3 fatty acids receive a good deal of attention, perhaps because of the popularity of these dietary supplements, healthy plant sources of omega-3 fatty acids exist (eg, nuts, seeds). (medscape.com)
Condensation1
  • 1-[5-(4-Tolyl)-1,3,4-oxadiazol-2-yl]methanamine ( 3 ) has been successfully synthesized by reacting p -toluic hydrazide ( 1 ) and glycine ( 2 ) via the polyphosphoric acid condensation route. (mdpi.com)
Salts2
Analogues1
Reaction3
  • Acid co-catalysts play vital roles in control of the reaction pathways, allowing for individual access to diverse products from identical substrates. (ntu.edu.sg)
  • The synthesis of the 3-hydroxycinchoninic acid has been performed with the reaction a commercially available isatin in presence of chloropyruvic acid (previously synthesized from pyruvic acid and sulfuryl chloride in 95-98% Yield. (blogspot.com)
  • A group of heterocyclic esters of caffeic acid was synthesized using Mitsunobu reaction and the esters were subjected to further structural modification by electrooxidation of the catechol ring of caffeic acid esters in the presence of sodium benenesulfinate and sodium toluensulfinate as nucleophiles. (ac.ir)
Amino acid4
  • Nowadays there are a number of antitumor, antiviral, antihypertensive and other drug preparations, pharmaceutically active aglycone of which is considered as a non-protein amino acid or a peptide composed of non-protein amino acid. (ysu.am)
  • Unnatural amino acid are widely used in combinatorial libraries or as chiral building blocks. (biosyn.com)
  • Bio-Synthesis is committed to become your peptide based drug discovery partner by providing a wide range of unnatural, non-standard amino acid peptide modifications. (biosyn.com)
  • 14 . The polishing composition of claim 13 , wherein the amino acid is selected from the group consisting of proline, glycine, alanine, and combinations thereof. (google.com.au)
Boronic Acid1
  • However, to the best of our knowledge, general methods to distinguish the multiple anions simultaneously using simple boronic acid-based chemosensors have not been established owing to the complex interference among analytes. (frontiersin.org)
Oxidation1
  • Acetic acid acts as a catalyst in both steps, i.e., in both the formation of and in the oxidation of the dihydropyridine. (google.es)
Radicals2
  • To develop productive methods for the asymmetric synthesis of optically active (S)- and (R)-a-amino acids of various nature and structure with heterocyclic radicals, to synthesize new heterocycle substituted amino acids, to study and clarify their structure and absolute configuration and to investigate their antimicrobial and other properties. (ysu.am)
  • Similarly, compounds containing saccharide radicals are classified in subclass C07H , and heterocyclic steroids are classified in subclass C07J . (uspto.gov)
Enzymes2
  • Non-protein amino acids as non-reversible inhibitors of enzymes are also among such compounds. (ysu.am)
  • In pharmacy a great deal of interest can be provoked by optically active a-amino acids with acetylene bond in the side chain radical, as they are active inhibitors of different enzymes. (ysu.am)
Substances1
Dyes2
Asymmetric synthesis2
Synonyms1
  • Acid CAS 96-97-9 Light Yellow Crystalline Powder Quick detail Product Name: 5-Nitrosalicylic acid Synonyms: 2-hydroxy-5-nitro-benzoicaci;AURORA KA-2534;ANILOTIC ACID ;2-HYDROXY-5-NITROBENZOIC ACID ;5-NITROSALICYLIC ACID ;5-NITRO-2-HYDROXY-BENZOIC ACID . (chinacomputerparts.com)
Peptide2
Assay1
  • Assay 99% 4-Aminopyridine Heterocyclic CAS 504-24-5 EINECS 207-987-9 Avitrol 200 Product Description 4- aminopyridine, white crystal. (phrmg.org)
MeSH1