Tag: M.W:200-300

Chemical Research Letters, May 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis. Category: pyrrolines,67604-48-2, Name is 5,7-Dihydroxy-2-(4-hydroxyphenyl)chroman-4-one, SMILES is O=C1CC(C2=CC=C(O)C=C2)OC3=C1C(O)=CC(O)=C3, belongs to pyrrolines compound. In a document, author is Dickenson, JM, introduce the new discover.

Transfected adenosine A(1) receptor-mediated modulation of thrombin-stimulated phospholipase C and phospholipase A(2) activity in CHO cells

Thrombin receptor activation in Chinese hamster ovary (CHO) cells stimulates the hydrolysis of inositol phospholipids and the release of arachidonic acid. Our previous studies have shown that activation of the human transfected adenosine A(1) receptor in CHO cells (CHO-A1) potentiates the accumulation of inositol phosphates elicited by endogenous P-2U purinoceptors and CCKA receptors. In this study we have investigated whether adenosine A(1) receptor activation can modulate thrombin-stimulated arachidonic acid release and/or inositol phospholipid hydrolysis in CHO-A1 cells. Thrombin stimulated [H-3]arachidonic acid release and total [H-3]inositol phosphate accumulation in CHO-A1 cells. Both these responses to thrombin were insensitive to pertussis toxin. The protein kinase C activator, phorphbol 12-myristate 13-acetate (PMA), potentiated thrombin-stimulated [H-3]arachidonic acid. In marked contrast, PMA inhibited thrombin-stimulated [H-3]inositol phosphate accumulation. The selective protein kinase C inhibitor Ro 31-8220 (3-{1-[3-(2-isothioureido)propyl]indol-3-yl}-4-(1-methylindol-3-yl)-3-pyrrolin-2,5-dione) had no effect on thrombin-stimulated [H-3]arachidonic acid release but reversed the potentiation of thrombin-stimulated [H-3]arachidonic acid release elicited by PMA. The selective adenosine A(1) receptor agonist N-6-cyclopentyladenosine (CPA) augmented the release of [H-3]arachidonic acid produced by thrombin. Co-activation of the adenosine A(1) receptor also potentiated thrombin-stimulated [H-3]inositol phosphate accumulation. The synergistic interactions between the adenosine A(1) receptor and thrombin were abolished in pertussis-toxin-treated cells. The potentiation of [H-3]arachidonic acid release by CPA was blocked by the protein kinase C inhibitors Ro 31-8220 and GF 109203X (3-[1-[3-(dimethylamino)propyl]-1H-indol-3-yl]-4-(1H-indol-3-yl)-1H-pyrrole-2,5-dione). In conclusion, thrombin receptor activation in CHO-A1 cells stimulates the accumulation of [H-3]inositol phosphates and the release of [H-3]arachidonic acid through pertussis-toxin-insensitive G-proteins. Experiments using PMA suggest that protein kinase C differentially regulates thrombin receptor activation of phospholipase C and phospholipase A(2). Co-activation of the transfected human adenosine A(1) receptor augments thrombin-stimulated phospholipase C and phospholipase A(2) activity. Finally, the augmentation of phospholipase A(2) activity by the adenosine A(1) receptor is inhibited by selective protein kinase C inhibitors, suggesting the involvement of protein kinase C.

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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

Research speed reading in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 1977-07-7, Name is 11-(4-Methylpiperazin-1-yl)-5H-dibenzo[b,e][1,4]diazepine, molecular formula is C18H20N4. In an article, author is Gein, V. L.,once mentioned of 1977-07-7, Application In Synthesis of 11-(4-Methylpiperazin-1-yl)-5H-dibenzo[b,e][1,4]diazepine.

Synthesis and antibacterial activity of 5-aryl-4-acyl-3-hydroxy-1-(2-hydroxyethyl)-3-pyrrolin-2-ones

5-Aryl-4-acyl-3-hydroxy-1-(2-hydroxyethyl)-3-pyrrolin-2-ones were synthesized using the reaction of ethanolamine with a mixture of aromatic aldehyde and methyl acylpyruvates. The antibacterial activity of the synthesized compounds was studied.

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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

Chemical Research Letters, May 2021. As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world., Computed Properties of https://www.ambeed.com/products/1707-03-5.html, Introducing a new discovery about 1707-03-5, Name is Diphenylphosphinic acid, molecular formula is C12H11O2P, belongs to pyrrolines compound. In a document, author is Esme, Asli.

Spectroscopic calculations, Hirshfeld surface analysis, and molecular docking studies of anticancer 6-(4-Aminophenyl)-4-(4-methoxyphenyl)-2-methoxynicotinonitrile

The title compound 6-(4-Aminophenyl)-4-(4-methoxyphenyl)-2-methoxynicotinonitrile was deliberated by proton nuclear magnetic resonance, ultraviolet-visible, and Fourier transform infrared spectroscopy techniques. The theoretical optimized geometrical parameters (bond lengths, bond angles and dihedral angles), vibrational wavenumbers, and the non-linear optical properties were calculated using the density functional theory with the Becke, 3-parameter, Lee-Yang-Parr functional method. Hirshfeld surface and two-dimensional fingerprint plot analyses have been performed to study the nature of intermolecular interactions within the crystal structure. The ultraviolet-visible spectrum, global chemical reactivity descriptors, the highest occupied molecular orbital and the lowest unoccupied molecular orbital energies in acetonitrile solvent have performed by Time-Dependent Density Functional Theory approach. The molecular electrostatic potential used to predict the reactive sites indicates that the nitrogen atom of the nitrile group is prone to electrophilic attack, and the hydrogen atoms belonging to the amino group to nucleophilic attack. The first-order hyperpolarizability value indicates that the title compound is a useful claimant as non-linear optical material studies. The reduced density gradient function based on electron density provides a simple, clear, and practical method to research non-covalent interactions was investigated. Molecular docking studies of the title compound have been performed, which suggests that the title molecule may act as a potential anticancer agent.

Therefore, this conceptually novel strategy might open impressive avenues to establish green and sustainable chemistry platforms. 1707-03-5, you can contact me at any time and look forward to more communication. Computed Properties of https://www.ambeed.com/products/1707-03-5.html.

Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

Electric Literature of 38609-97-1, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 38609-97-1, Name is 2-(9-Oxoacridin-10(9H)-yl)acetic acid, SMILES is O=C(O)CN(C1=C2C=CC=C1)C3=CC=CC=C3C2=O, belongs to pyrrolines compound. In a article, author is El-Dine, SAS, introduce new discover of the category.

Reactions with pyrrolidine-2,4-diones, part 4*: Synthesis of some 3-substituted 1,5-diphenylpyrrolidine-2,4-diones as potential antimicrobial, anti-HIV-1 and antineoplastic agents

The condensation of 1,5-dipheiiylpyrrolidine-2,4-dione (1) with ethyl orthoformate yielded 3-ethoxymethylene-1,5-diphenylpyrrolidinc-2,4-dione (2). Reaction of the latter with hydrazine hydrate, secondary amines 7a-c or urea afforded the corresponding 3-substituted aminomethylene-1,5-diphenylpyrrolidene-2,4-diones 3, 8a-c or 9. On the other hand, condensation of 3 With veratraldehyde (5a) yielded 3-[(3,4-dimethoxybenzylidene)hydrazinomethylene]-1,5-diphenylpyrrolidine-24-dione (6). Whereas, cyclization of 9 with the reactive malonate ester 11 produced 3-[(5-butyl-4-hydroxy-2,6dioxo- 1,2,3,6- tetralhydropyrimidin-1-yl) methylene]-1,5-diphenylpyrrolidine-2,4-dione (12). The condensation of some selected aromatic aldehydes 5a-c and addition of morpholine (7c) or piperidine (7d) to some of the resulting 3-arylidene,1,5-diphenylpyrrolidine-2,4-diones 13b, e gave the respective 3-substituted methyl-4-hydroxy-1,5-diphenyl-Delta (3)-pyrrolin-2-ones 14a-c. Selected members of the new series were screened for their in vitro antimicrobial, anti-HIV-1 and antineoplastic activities. Two compounds 14a, b showed pronounced inhibitory activities against Gram-positive bacteria; whereas, in the in vitro anti-HIV-1 screening, only one compound Be displayed a moderate activity. However, in the antineoplastic screening protocol, the tested compounds were devoid of activity.

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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Application In Synthesis of Bis(2,4,4-trimethylpentyl)phosphinic acid, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 83411-71-6, Name is Bis(2,4,4-trimethylpentyl)phosphinic acid, molecular formula is C16H35O2P. In an article, author is Yang, Dan,once mentioned of 83411-71-6.

Enhanced thermal conductivity of carboxyl nitrile butadiene rubber composites with low-cost poly(catechol/polyamine) modified Al2O3 via biomimetic method

With the miniaturization, integration, and functionalization of the electronic components, heat dissipation in the electronic devices has become a challenging issue. Owing to high polarity, carboxyl nitrile butadiene rubber (XNBR) is usually employed as a dielectric material in the electronic devices. However, low thermal conductivity of XNBR hardly satisfies the increasingly stricter demands for heat dissipation. Herein, we used low-cost poly (catechol/polyamine) (PCPA) to modify Al2O3 nanoparticles via biomimetic method for enhancing the interfacial interaction between the Al2O3 filler and XNBR. The ortho-polyphenols in catechol were oxidized into orthoquinone groups in the alkaline solution. Then, the ortho-quinone groups formed a cross-linked structure to obtain PCPA via the Michael addition or Schiff base reaction with amine. The process decreased the interfacial thermal resistance and phonon scattering, resulting in an enhanced thermal conductivity. When the Al2O3-PCPA nanoparticles content was 30 vol%, the thermal conductivity of XNBR based composites reached up to 0.51 W/ mK, which was 3.19 times that of pure XNBR (0.16 W/mK). The proposed method has potential applications in large scale production of thermally conductive composites in industries, such as electronic packaging materials and thermal management materials.

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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 54-47-7, Name is Pyridoxal phosphate, molecular formula is C8H10NO6P. In an article, author is Conti, P,once mentioned of 54-47-7, SDS of cas: 54-47-7.

Synthesis of new bicyclic analogues of glutamic acid

Regioisomeric 3-hydroxyisoxazolinyl prolines [HIP-A (+/-)-6 and HIP-B (+/-)-7], which represent a restricted conformation of NMDA, AMPA, and kainic acid, potent and selective agonists at ionotropic glutamate receptors, have been prepared through two different strategies. In the first approach bromonitrile oxide was added to N-BOC-Delta(3)-pyrroline or N-BOC-Delta(3)-pyrrolin-2-one and the carboxylic group was subsequently appended. The alternative strategy is based on the cycloaddition of the same 1,3-dipole to NBOC-3,3-didehydroproline methyl ester, (C) 1999 Elsevier Science Ltd. All rights reserved.

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Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

229625-50-7, Name is Di-tert-butyl chloromethyl phosphate, molecular formula is C9H20ClO4P, Formula: https://www.ambeed.com/products/229625-50-7.html, belongs to pyrrolines compound, is a common compound. In a patnet, author is Armstrong, Brandon D., once mentioned the new application about 229625-50-7.

Overhauser dynamic nuclear polarization and molecular dynamics simulations using pyrroline and piperidine ring nitroxide radicals

The efficiency of Overhauser dynamic nuclear polarization (DNP) depends on the local dynamics modulating the dipolar coupling between the two interacting spins. By attaching nitroxide based spin labels to molecules and by measuring the H-1 DNP response of solvent water, information about the local hydration dynamics near the spin label can be obtained. However, there are two commonly used types of nitroxide ring structures; a pyrroline based and a piperidine based molecule. It is important to know when comparing different experiments, whether changes in DNP enhancements are due to changes in local hydration dynamics or because of the different spin label structures. In this study we investigate the key parameters affecting DNP signal enhancements for 3-carbamoyl-2,2,5,5-tetramethyl-3-pyrrolin-1-oxyl, a 5-membered ring nitroxide radical, and for 4-oxo-2,2,6,6-tetramethyl-1-piperidinyloxy, a 6-membered ring nitroxide radical. Using X-Band DNP, field cycling relaxometry, and molecular dynamics simulations, we conclude that the key parameters affecting the DNP amplitude of the H-1 signal of water to be equal when using either nitroxide. Thus, experiments measuring hydration dynamics using either type of spin labels may be compared. (C) 2009 Elsevier Inc. All rights reserved.

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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

In an article, author is Demir, Ayhan S., once mentioned the application of 54-47-7, Product Details of 54-47-7, Name is Pyridoxal phosphate, molecular formula is C8H10NO6P, molecular weight is 247.1419, MDL number is MFCD00006333, category is pyrrolines. Now introduce a scientific discovery about this category.

Selective one-pot synthesis of substituted pyrrole-3-phosphonates from alpha-cyanomethyl-beta-ketoesters

A one-step synthesis of 5-alkoxypyrrole-3-phosphonates is presented starting from suitable alpha-cyanomethyl-beta-ketophosphonates. The key step in the synthesis involves a one-pot addition and heteroannulation sequence. The zinc perchlorate-catalyzed addition of alcohols to the nitrile carbon of alpha-cyanomethyl- beta-ketophosphonates followed by annulation furnished 5-alkoxypyrrole-3-phosphonates. The addition-annulation process is carried out in the presence of water and 4,5-dihydro-5-oxo-1H-pyrrole-3-phosphonates (pyrrolinones) are obtained in good yields. (C) 2007 Elsevier Ltd. All rights reserved.

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Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

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. 1119-34-2, Name is Argininine monohydrochloride, molecular formula is C6H15ClN4O2. In an article, author is Damian, G,once mentioned of 1119-34-2, Safety of Argininine monohydrochloride.

ESR study of the dynamics of adsorbed nitroxide radicals on porous surfaces in the dehydration process

The dynamics of 3-carbamoyl-2,2,5,5-tetramethyl-3-pyrrolin-1-yloxy (Tempyo), 4-oxo-2,2,6,6-tetramethyl-1-piperinyloxy (4-oxo-Tempo) and 4-acetamide-2,2,6,6-tetramethyl-1-piperidin-yloxy (4-acetamide-Tempo) nitroxide radicals in aqueous solutions adsorbed on hydrophilic and hydrophobic SiO2, Al2O3 and NaY zeolites with respect to dehydration degree were studied by ESR spectroscopy. The viscosity and the correlation times for the rotational motion of the adsorbed radicals depend on the dehydration degree, the nature of the support surfaces and the characteristics of the spin probe molecules. (C) 1998 Elsevier Science B.V.

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Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem

Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Basnet, Prakash, once mentioned the application of 272786-64-8, Name is 2-((4-Fluorophenyl)sulfonyl)hexahydropyrrolo[1,2-a]pyrazin-6(2H)-one, molecular formula is C13H15FN2O3S, molecular weight is 298.3332, MDL number is MFCD20526948, category is pyrrolines. Now introduce a scientific discovery about this category, Recommanded Product: 272786-64-8.

Copper Catalyzed Oxidative Arylation of Tertiary Carbon Centers

We describe herein a Cu(OTf)(2) catalyzed oxidative arylation of a tertiary carbon-containing substrate including aryl malononitriles, 3-aryl benzofuran-2-ones, and 3-aryl oxindoles. In some cases, the nitrile groups of the aryl malononitriles undergo further reactions leading to lactones or imines. These reaction conditions are applicable for a range of arenes, including phenols, anilines, anisoles, and heteroarenes. Mechanistic studies support the formation of a cationic intermediate via a two-electron oxidation.

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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem