Category: thiazolidine

Related Products of 76186-04-4, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 76186-04-4, (S)-4-Isopropylthiazolidine-2-thione, introducing its new discovery.

Assessing stereoelectronic effects in dipolar cycloadditions yielding fused thiazolopyridone rings

We report a combined experimental and computational study on the cycloadditions of bicyclic 1,3-thiazolium-4-olates, derived from thiazolidin-2-thiones, with asymmetrically-substituted acetylenes. These results provide further mechanistic insights into the above dipolar cycloadditions and enable an unequivocal characterization by NMR spectroscopy of regiochemical patterns as previous derivatives had substituents at both C-2 (in the dipole) and C-6 (in products). Accordingly, new dihydrothiazolopyrid-2-ones have been obtained from a thioisomuenchnone lacking substitution at C-2. With the aim of assessing the steric hindrance as well as the facial stereoselection induced by a bulky group on the Si face (relative to C-7a) of the mesoionic heterocycle, a chiral thioisomuenchnone has also been obtained along with the resulting optically active thiazolopyridones. A computational study of these particular cycloadditions, largely based on an NBO analysis, allowed us to evaluate the influence of substituents on intermolecular steric repulsions, charge transfers, as well as solvent effects.

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Quinuclidine – Wikipedia,
Quinuclidine | C7H723N | ChemSpider

Synthetic Route of 19771-63-2, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Patent, and a compound is mentioned, 19771-63-2, (R)-2-Oxothiazolidine-4-carboxylic acid, introducing its new discovery.

Metalloproteinase inhibitors, their therapeutic use and process for the production of the starting compound in the synthesis thereof

Objects of the present invention are compounds of a peptido-mimetic character having the capacity of acting as inhibitors of metalloproteinases produced by venom of snake, and of other metalloproteinases of human origin which have been put in relation with various pathologies in man, including tumoral growth and metastatization, aterosclerosis, multiple sclerosis, Alzheimer’s disease, osteoporosis, hypertension, rheumatoid arthritis and other inflammatory diseases.Object of the present invention is also the procedure for the production of diethylester of (1)-phosphotryptophan, as an initial product necessary to synthesize all compounds mentioned above.

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Quinuclidine – Wikipedia,
Quinuclidine | C7H647N | ChemSpider

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. name: (S)-4-Phenylthiazolidine-2-thione, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 185137-29-5, name is (S)-4-Phenylthiazolidine-2-thione. In an article£¬Which mentioned a new discovery about 185137-29-5

Stereoselective synthesis of protectin D1: A potent anti-inflammatory and proresolving lipid mediator

A convergent stereoselective synthesis of the potent anti-inflammatory, proresolving and neuroprotective lipid mediator protectin D1 (2) has been achieved in 15% yield over eight steps. The key features were a stereocontrolled Evans-aldol reaction with Nagao’s chiral auxiliary and a highly selective Lindlar reduction of internal alkyne 23, allowing the sensitive conjugated E,E,Z-triene to be introduced late in the preparation of 2. The UV and LC/MS-MS data of synthetic protectin D1 (2) matched those obtained from endogenously produced material.

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Quinuclidine | C7H767N | ChemSpider

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 2682-49-7, name is Thiazolidin-2-one, introducing its new discovery. Product Details of 2682-49-7

A hydrogen peroxide responsive prodrug of Keap1-Nrf2 inhibitor for improving oral absorption and selective activation in inflammatory conditions

Transcription factor Nuclear factor erythroid 2-related factor 2 (Nrf2) and its negative regulator, the E3 ligase adaptor Kelch-like ECH-associated protein 1 (Keap1), control the redox and metabolic homeostasis and oxidative stress. Inhibitors of Keap1-Nrf2 interaction are promising in oxidative stress related inflammatory diseases but now hit hurdles. By utilizing thiazolidinone moiety to shield the key carboxyl pharmacophore in Keap1-Nrf2 inhibitor, a hydrogen peroxide (H2O2)-responsive prodrug pro2 was developed. The prodrug modification improved the physicochemical properties and cell membrane permeability of the parent drug. Pro2 was stable and stayed inactive under various physiological conditions, while became active by stimulation of H2O2 or inflammation derived reactive oxygen species. Moreover, pro2 exhibited proper pharmacokinetic profile suitable for oral administration and enhanced anti-inflammatory efficiency in vivo. Thus, this novel prodrug approach may not only provide an important advance in the therapy of chronic inflammatory diseases with high level of H2O2, but also offer a fresh solution to improve the drug-like and selectivity issues of Keap1-Nrf2 inhibitors.

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Quinuclidine | C7H366N | ChemSpider

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 2682-49-7, name is Thiazolidin-2-one, introducing its new discovery. Application In Synthesis of Thiazolidin-2-one

Assessment of the Production of Value-Added Chemical Compounds from Sewage Sludge Pyrolysis Liquids

A procedure to analyze sewage sludge (SS) pyrolysis liquids based on solvent fractionation has been developed. Pyrolysis liquids are separated into three different fractions: heptane soluble (Hep-sol), dichloromethane soluble (DCM-sol), and hydrochloric acid soluble (HCl-sol). Diverse techniques (GC-MS, UPLC-TOF-MS) were employed to qualitatively and quantitatively analyze liquid fractions to assess the potential production of value-added chemicals. Aliphatic hydrocarbons, aliphatic nitriles, and steroids were mostly separated in the Hep-sol fraction, phenols and fatty acids in the DCM-sol fraction, and carboxylic acids and amides in the HCl-sol fraction. The largest production was obtained for ammonia (10?14 kg per tonne of SS) and alpha-olefins (8?9 kg per tonne of SS). The potential production of some of these value-added chemicals from SS pyrolysis liquid was compared with their current European production. In the case of alpha-olefins, 16 % of their European production could be achieved by SS pyrolysis.

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Quinuclidine | C7H284N | ChemSpider

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 76186-04-4, name is (S)-4-Isopropylthiazolidine-2-thione, introducing its new discovery. SDS of cas: 76186-04-4

Asymmetric transfer hydrogenation of ketones using Ru(0) nanoparticles modified by Chiral Thiones

The catalytic asymmetric transfer hydrogenation (ATH) of acetophenone in isopropanol by Ru(0) nanoparticles (NPs) obtained by the in-situ reduction of Ru (II) half-sandwich complexes of chiral 2-oxazolidinethiones and 2-thiozolidinethiones was examined and compared with the catalytic activity of Ru(0) NPs formed in-situ by the reduction of [Ru(p-cymene)(Cl)2]2 in presence of optically active ligands such as (S)-4-isobutylthiazolidine-2-thione, (S)-4-Isopropyl-2(?2-pyridinyl)-2-oxazoline, (8S, 9R)-(?)-cinchonidine, (S)-leucinol, (S)-phenylalaninol, and (S)-leucine. Three of the best catalytic systems were then examined for ATH of thirteen aromatic ketones with different electronic and steric properties. A maximum of 24% ee was obtained using NPs generated from the Ru (II) half-sandwich complex with (S)-4-isobutylthiazolidine-2-thione in the TH of acetophenone. The NPs were characterized by TEM and DLS measurements. Kinetic studies and poisoning experiments confirmed that the reaction is catalyzed by the chiral NPs formed in-situ. Complete characterization of the complexes, including the X-ray crystallographic characterization of two complexes, was also carried out.

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Quinuclidine – Wikipedia,
Quinuclidine | C7H726N | ChemSpider

Electric Literature of 5908-62-3, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 5908-62-3, molcular formula is C3H7NO2S, introducing its new discovery.

HETEROCYCLIC ANTIVIRAL COMPOUNDS

Chemokine receptor antagonists, in particular, 3,7-diazabicyclo[3.3.0]octane compounds according to formula (I) wherein R1-R3 R6c and X1 are as defined herein are antagonists of chemokine CCR5 receptors which are useful for treating or preventing an human immunodeficiency virus (HIV-1) infection, or treating AIDS or ARC. The invention further provides methods for treating diseases that are alleviated with CCR5 antagonists. The invention includes pharmaceutical compositions and methods of using the compounds for the treating diseases mediated by the CCR5 receptor.

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Quinuclidine | C7H533N | ChemSpider

Reference of 2682-49-7, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 2682-49-7, Name is Thiazolidin-2-one, molecular formula is C3H5NOS. In a Article£¬once mentioned of 2682-49-7

Studies on schiff bases from methyl-1-naphthyl ketone. Part-II: Synthesis and characterization of ketimines from 1-acetylnaphthalene with derivatives of aniline

The Ketimines (Schiff bases) were prepared from Methyl-1-naphthyl-ketone with Aniline, 2-Chloro-aniline, 3- Chloro-aniline, 4-Chloro-aniline and 2-Nitroaniline using toluene as solvent by azeotropic(reflux) method using Dean and Stark. The synthesized ketimines were characterized and confirmed by colour, physical constant, TLC and spectral(UV-Vis and FTIR) information.

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Quinuclidine – Wikipedia,
Quinuclidine | C7H411N | ChemSpider

Application of 2682-49-7, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 2682-49-7, Thiazolidin-2-one, introducing its new discovery.

Antiinflammatory activity of triazine thiazolidinone derivatives: Molecular docking and pharmacophore modelling

Some 3-(4,6-dichloro-1,3,5-triazin-2-yl)-2-phenylthiazolidin-4-one derivatives were prepared by cyclo-condensation reaction between 2-amino-4,6-dichloro-1,3,5-triazine, substituted aromatic aldehyde and ethyl-2-mercaptoacetate, with an yield in the range 76-86 %. Prepared compounds showed antiinflammatory activity. The halogenated electron-withdrawing groups on the phenyl ring of 4-thiazolinone generated antiinflammatory activity. Among the synthesized compounds, 3-(4,6-dichloro-1,3,5-triazin-2-yl)-2-(2,5-difluorophenyl)thiazolidin-4-one showed better antiinflammatory activity with 72 and 79 % inhibition for TNF-alpha and IL-6, respectively. Also, molecular docking and pharmacophore modelling performed for this active antiinflammatory compound highlighted that hydrophobicity as an important feature for activity optimization.

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Quinuclidine – Wikipedia,
Quinuclidine | C7H451N | ChemSpider

Electric Literature of 1055361-35-7, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1055361-35-7, Name is 4-(4-((2,4-Dioxothiazolidin-5-ylidene)methyl)-2-methoxyphenoxy)-3-(trifluoromethyl)benzonitrile, molecular formula is C19H11F3N2O4S. In a Article£¬once mentioned of 1055361-35-7

Further studies of regioselective alkoxydehalogenation of 2,4-dichloroquinolines, 2,6-dichloropyridine and 2,4-dichloronitrobenzene

Regioselective alkoxydehalogenation reactions using solid alkoxide in toluene have been studied. 2-Alkoxy-4-haloquinolines were obtained from 2,4-dichloroquinolines. With 2,6-dichloropyridine, alpha-regioselectivity occurred to furnish the 2-alkoxy-6-chloropyridine. The reaction failed with 2,4-dichloronitrobenzene indicating that alkoxide surface contact with a basic heterocyclic nitrogen lone pair was essential for success. Comparative studies with the standard alkoxydehalogenation reaction (alcoholic alkoxide solution) have been performed, all compounds have been identified by 1H and 13C NMR.

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Quinuclidine | C7H916N | ChemSpider