Month: November 2022

Yamane, Daisuke; Hayashi, Yuri; Matsumoto, Moe; Nakanishi, Hiroki; Imagawa, Haruka; Kohara, Michinori; Lemon, Stanley M.; Ichi, Ikuyo published the artcile< FADS2-dependent fatty acid desaturation dictates cellular sensitivity to ferroptosis and permissiveness for hepatitis C virus replication>, Safety of Ethyl 3-amino-4-(cyclohexylamino)benzoate, the main research area is HCV replication FADS fatty acid desaturation ferroptosis cellular sensitivity; FADS2; Mead acid; direct-acting antivirals; ferroptosis; hepatitis C virus; lipid peroxidation; polyunsaturated fatty acid.

The metabolic oxidative degradation of cellular lipids severely restricts replication of hepatitis C virus (HCV), a leading cause of chronic liver disease, but little is known about the factors regulating this process in infected cells. Here we show that HCV is restricted by an iron-dependent mechanism resembling the one triggering ferroptosis, an iron-dependent form of non-apoptotic cell death, and mediated by the non-canonical desaturation of oleate to Mead acid and other highly unsaturated fatty acids by fatty acid desaturase 2 (FADS2). Genetic depletion and ectopic expression experiments show FADS2 is a key determinant of cellular sensitivity to ferroptosis. Inhibiting FADS2 markedly enhances HCV replication, whereas the ferroptosis-inducing compound erastin alters conformation of the HCV replicase and sensitizes it to direct-acting antiviral agents targeting the viral protease. Our results identify FADS2 as a rate-limiting factor in ferroptosis, and suggest the possibility of pharmacol. manipulating the ferroptosis pathway to attenuate viral replication.

Cell Chemical Biology published new progress about Albumins Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 347174-05-4 belongs to class esters-buliding-blocks, and the molecular formula is C15H22N2O2, Safety of Ethyl 3-amino-4-(cyclohexylamino)benzoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Lange, Heiko; Bergander, Klaus; Froehlich, Roland; Kehr, Seda; Nakamura, Shuichi; Shibata, Norio; Toru, Takeshi; Hoppe, Dieter published the artcile< Highly enantioselective reactions of configurationally labile epimeric diamine complexes of lithiated S-benzyl thiocarbamates>, Product Details of C19H34O2, the main research area is enantioselective reaction configuration labile epimeric diamine complex lithiation benzylthiocarbamate.

Substitution reactions that employ primary-carbamoyl-protected arylmethanethiols are described. The enantio-determination step was found to occur in the post-deprotonation step as a dynamic thermodn. resolution with a chiral bis(oxazoline) ligand. The configurationally labile lithium complexes were trapped with various electrophiles to yield different substitution products in good to excellent yields and enantiomeric excesses. The absolute configurations of the substitution products were determined, and the stereochem. pathway of the substitution reaction was elucidated for different classes of electrophiles. The temperature-dependent epimerization process was monitored by 1H and 6Li NMR spectroscopy.

Chemistry – An Asian Journal published new progress about Absolute configuration. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gong, Haiyue; Zhang, Ka; Dicko, Cedric; Bulow, Leif; Ye, Lei published the artcile< Ag-Polymer Nanocomposites for Capture, Detection, and Destruction of Bacteria>, Recommanded Product: 2-Ethyl-2-((methacryloyloxy)methyl)propane-1,3-diyl bis(2-methylacrylate), the main research area is silver nanoparticle polymer nanocomposite bacteria capture detection destruction.

Bacterial infection is 1 of the major problems for human health. To prevent outbreak of bacteria-caused diseases, early diagnosis of bacterial pathogen and effective destruction of pathogenic microorganisms are in urgent need. We developed a new multifunctional nanocomposite material that can effectively capture and destroy bacteria. Epoxide-modified nanoparticles were synthesized by micro-emulsion polymerization and precipitation polymerization The epoxide groups on the particle surface were reacted with polyethyleneimine to introduce cationic amine groups. The amine groups on the nanoparticle surface enhanced the colloidal stability of the particles’ suspension, and provided multivalent interactions to bind and destroy the bacteria. After further modification with Ag nanoparticles, the final composite nanomaterial was able to not only capture and destroy Gram-neg. bacteria, but also allow the bacteria’s fingerprint spectra to be obtained through surface-enhanced Raman scattering. The multifunctional nanoparticles developed offer a new approach towards fast capture, detection, and destruction of pathogenic bacteria.

ACS Applied Nano Materials published new progress about Antibacterial agents. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Recommanded Product: 2-Ethyl-2-((methacryloyloxy)methyl)propane-1,3-diyl bis(2-methylacrylate).

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Danyi; Yuan, Li; Liang, Guozheng; Gu, Aijuan published the artcile< Self-Healable and Remoldable Transparent Polyurethane Film with High Dielectric Constant from the Synergistic Effect between Lithium Salt and Ionic Liquid>, Application of C19H34O2, the main research area is self healable remoldable transparent polyurethane dielec lithium ionic liquid.

The rapid development of new-generation flexible touch display panels puts forward more requirements on the overlays, not only including colorlessness and transparency but also having self-healing and remolding abilities as well as high dielec. constant Herein, new self-healable and remoldable polyurethane films (PULEx) with high dielec. constant were developed through building of reversible crosslinked networks with special synergistic effect between lithium salt and ionic liquid The integrated performance of PULEx was systematically investigated. Results show that as the loadings of lithium salt and ionic salt increase, films show increased dielec. constant and self-healing ability. The film with suitable composition (PULE7.5) has the best comprehensive performance; its dielec. constants (104-106 Hz) range from 9.6 to 6.1, which are comparable to those of glass (commonly used overlay for rigid capacitive touchscreen panels). The construction of reversible covalent crosslinking endows PULE7.5 with good mech. strength, high self-healing efficiency after complete fracture (92.7%), and high recovery of mech. properties after remolding (91.8%). In addition, the colorless PULE7.5 has high transparency (90.7% transmittance at 550 nm) and can freely convert among three shapes of bending, scrolling, and S-shape, showing great prospects in fabricating flexible display devices. The mechanism behind these outstanding integrated performances of PULE films is investigated through correlation with structures.

Industrial & Engineering Chemistry Research published new progress about Dielectric constant. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Prabhu, C.; Rajasekar, V.; Prakash, T. published the artcile< Characterisation and assessment of physicochemical properties of grapeseed methyl ester using predictive correlations and ASTM standards for CI engine application>, Electric Literature of 112-63-0, the main research area is grape seed methyl ester physicochem property CI engine application.

In the present work, a detailed investigation of the physio-chem. characteristics of grapeseed Me ester (GSME) obtained from winery biomass waste has been carried out to evaluate its suitability as an energy alternate, for CI engines. GSME was subjected to Gas chromatog. and mass spectrometry anal. from which fatty acids compositions were determined followed by other interpretations such as carbon number, number of double bonds, etc. Two different predictive correlations were identified from the literature for predicting the properties that are considered important, for using GSME as a fuel. The predicted properties of GSME are compared with the exptl. results obtained through standard ASTM procedures, for diesel, neat grapeseed oil (GSO) and GSME, resp. Further, the influence of the structural and compositional characteristics of GSME on the physicochem. properties like d., kinematic viscosity, lower calorific value, etc. has been evaluated and found to be closer to diesel.

Nature, Environment and Pollution Technology published new progress about Cetane number. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

de Souza, I.; Monteiro, L. K. S.; Guedes, C. B.; Silva, M. M.; Andrade-Tomaz, M.; Contieri, B.; Latancia, M. T.; Mendes, D.; Porchia, B. F. M. M.; Lazarini, M.; Gomes, L. R.; Rocha, C. R. R. published the artcile< High levels of NRF2 sensitize temozolomide-resistant glioblastoma cells to ferroptosis via ABCC1/MRP1 upregulation>, Computed Properties of 112-63-0, the main research area is .

Abstract: Glioblastoma patients have a poor prognosis mainly due to temozolomide (TMZ) resistance. NRF2 is an important transcript factor involved in chemotherapy resistance due to its protective role in the transcription of genes involved in cellular detoxification and prevention of cell death processes, such as ferroptosis. However, the relation between NRF2 and iron-dependent cell death in glioma is still poorly understood. Therefore, in this study, we analyzed the role of NRF2 in ferroptosis modulation in glioblastoma cells. Two human glioblastoma cell lines (U251MG and T98G) were examined after treatment with TMZ, ferroptosis inducers (Erastin, RSL3), and ferroptosis inhibitor (Ferrostatin-1). Our results demonstrated that T98G was more resistant to chemotherapy compared to U251MG and showed elevated levels of NRF2 expression. Interestingly, T98G revealed higher sensitivity to ferroptosis, and significant GSH depletion upon system xc- blockage. NRF2 silencing in T98G cells (T98G-shNRF2) significantly reduced the viability upon TMZ treatment. On the other hand, T98G-shNRF2 was resistant to ferroptosis and reverted intracellular GSH levels, indicating that NRF2 plays a key role in ferroptosis induction through GSH modulation. Moreover, silencing of ABCC1, a well-known NRF2 target that diminishes GSH levels, has demonstrated a similar collateral sensitivity. T98G-siABCC1 cells were more sensitive to TMZ and resistant to Erastin. Furthermore, we found that NRF2 pos. correlates with ABCC1 expression in tumor tissues of glioma patients, which can be associated with tumor aggressiveness, drug resistance, and poor overall survival. Altogether, our data indicate that high levels of NRF2 result in collateral sensitivity on glioblastoma via the expression of its pro-ferroptotic target ABCC1, which contributes to GSH depletion when the system xc- is blocked by Erastin. Thus, ferroptosis induction could be an important therapeutic strategy to reverse drug resistance in gliomas with high NRF2 and ABCC1 expression.

Cell Death & Disease published new progress about 112-63-0. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Wenbiao; Jiang, Shangxu; Xie, Yuan; Yan, Xiaoqing; Zhao, Fugang; Pang, Xinchang; Zhang, Kai; Jia, Zhongfan published the artcile< Anthraquinone-Catalyzed TEMPO Reduction to Realize Two-Electron Energy Storage of Poly(TEMPO-methacrylate)>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is anthraquinone catalyzed reduction electron energy storage poly methacrylate.

2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO) functional polymers are a type of organic electroactive material featuring a two-electron redox process. However, the electrochem. reduction of TEMPO (TEMPO•/-) is rarely adopted for energy storage due to its slow reaction kinetics. Here, we report using anthraquinone (AQ) as an organic redox mediator to promote TEMPO reduction kinetics. The catalytic effect of AQ is verified by electrochem. in situ FTIR spectroscopy in a model three-electrode system and further evidenced by cyclic voltammetry and chronoamperometry, providing a turnover frequency of 69 h-1. To exemplify the AQ catalytic effect in energy storage performance, we incorporate AQ groups into a typical TEMPO polymer (i.e., poly(TEMPO-methacrylate), PTMA). The AQ-catalyzed TEMPO reduction and AQ/carbon π-π interaction synergistically reduce the heterogeneous charge transfer resistance and accelerate the kinetics of the TEMPO•/- process in the PTMA electrode. The half-cell tests of the AQ functional PTMA show two prominent discharge plateaus with an initial capacity of 174 mAh g-1 and a 0.18% capacity loss per cycle. Moreover, the discharge capacity based on the TEMPO•/- couple is about 85 mAh g-1, 30% higher than that of the pristine PTMA. This new strategy could be widely applied to various organic redox systems to enhance their electrochem. kinetics and particularly improve the energy storage performance of organic polymer redox materials.

ACS Energy Letters published new progress about Carbon black Role: TEM (Technical or Engineered Material Use), USES (Uses). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Dove, Stefan published the artcile< Picolinic acids as inhibitors of dopamine β-monooxygenase: QSAR and putative binding site>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is dopamine monooxygenase picolinic acid derivative inhibitor QSAR.

Dopamine β-monooxygenase (DBM, EC 1.14.17.1) catalyzes the oxidation of dopamine into (R)-noradrenaline. DBM inhibitors may act as antihypertensive drugs. A series of 22 picolinic acids substituted in 4- and 5-position was previously synthesized and tested for inhibition of DBM from bovine adrenal medulla. The QSAR of these compounds were investigated by Hansch anal. and comparative mol. field anal. (CoMFA). The correlation of pI50 values with electronic (nucleophilic substituent constant σp-, oxygen net charges and HOMO energy calculated by AMPAC-AM1), hydrophobic (π values of R4) and steric descriptors (molar refraction and Sterimol parameters of R5) indicated that a more neg. charged carboxylate moiety, more lipophilic R4 groups as well as wider bulk and higher molar refraction of 5-substituents increase DBM inhibition. The CoMFA approach generally reproduced these QSAR in terms of steric and electrostatic field variables, the latter restricted to the carboxylate area. To predict a putative binding site, dopamine and fusaric acid were docked into a partial homol. model of DBM derived from a crystal structure of peptidylglycine α-hydroxylating monooxygenase (EC 1.14.17.3). The inhibitor is suggested to interact by its carboxylate group with the copper site CuB and the protonated amino group of dopamine according to the uncompetitive type of inhibition. R4 points to a tyrosine side chain. R5 protrudes into the fringe of the catalytic crevice. It may “”freeze”” to the solvated surface of polar amino acids and addnl. contact an isoleucine residue. Taken together, the model explains the QSAR results by corresponding types of interaction.

Archiv der Pharmazie (Weinheim, Germany) published new progress about QSAR (quantitative structure-activity relationship) (dopamine β-monooxygenase inhibition). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Crich, David; Eustace, K. Angeline; Fortt, Simon M.; Ritchie, Timothy J. published the artcile< Acyl radical cyclizations in synthesis. Part 2. Further substituent effects on the mode and efficiency of cyclization of 6-heptenoyl radicals>, Quality Control of 112-63-0, the main research area is cyclization heptenoyl radical; selenol ester cyclization stereochem.

In an attempt to determine the factor affecting exo/endo- selectivity in the cyclization of 6-heptenoyl radicals various heteroatom substituted selenol esters were prepared and reacted with tributyltin hydride. The incorporation of a 7-phenylthio moiety results in clean, high yielding, cyclization in the exo- mode. Evidence is given for the reversibility of 6-heptenoyl radical cyclizations.

Tetrahedron published new progress about Cyclization. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Toda, Fumio; Schmeyers, Jens published the artcile< Selective solid-state bromination of anilines and phenols>, COA of Formula: C19H34O2, the main research area is aniline solid state bromination; phenol solid state bromination.

Environmentally benign solid-state bromination of anilines and phenols with gaseous Br2 and solid bromination reagents is described. In most cases the reactions proceeded in the absence of solvents with higher yields and selectivity than in solution

Green Chemistry published new progress about Bromination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics