Month: October 2022

Thiel, Cora S.; Vahlensieck, Christian; Bradley, Timothy; Tauber, Svantje; Lehmann, Martin; Ullrich, Oliver published the artcile< Metabolic Dynamics in Short- and Long-Term Microgravity in Human Primary Macrophages>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is metabolomics microgravity hypergravity metabolite amino acids glucose ketoleucine rhamnose; immune cells; metabolomics; microgravity; sounding rocket; spaceflight.

Microgravity acts on cellular systems on several levels. Cells of the immune system especially react rapidly to changes in gravity. In this study, we performed a correlative metabolomics anal. on short-term and long-term microgravity effects on primary human macrophages. We could detect an increased amino acid concentration after five minutes of altered gravity, that was inverted after 11 days of microgravity. The amino acids that reacted the most to changes in gravity were tightly clustered. The observed effects indicated protein degradation processes in microgravity. Further, glucogenic and ketogenic amino acids were further degraded to Glucose and Ketoleucine. The latter is robustly accumulated in short-term and long-term microgravity but not in hypergravity. We detected highly dynamic and also robust adaptative metabolic changes in altered gravity. Metabolomic studies could contribute significantly to the understanding of gravity-induced integrative effects in human cells.

International Journal of Molecular Sciences published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Li, Linhan; Zhou, Ting; Zhong, Linyu; Zhou, Qian; Gu, Gang; Hu, Mengjun; Chen, Fengping; Lin, Sheng published the artcile< Bioremediation of quinclorac injury on tobacco by a rhizosphere bacterium>, HPLC of Formula: 112-63-0, the main research area is rhizosphere bacterium tobacco quinclorac injury bioremediation; Bioremediation; Herbicide; Klebsiella variicola; Plant growth-promoting bacterium; Tobacco.

The presence of herbicides residues in soil represents a serious problem for agriculture. Quinclorac is a common herbicide applied in rice field, but its residue can cause abnormal growth in successive crop of tobacco in Southern China. Remediation by microorganisms is considered to be an environmentally friendly method to remove such pollutants injury. The aims of this study were to obtain quinclorac remediation isolates and to investigate the possible mechanism(s) of remediation. Six bacterial isolates were obtained from rhizosphere of rice-tobacco rotation fields, and were found to be capable of degrading quinclorac on a mineral salt medium (MSM), with degradation efficiency ranging from 2.1 to 23.7%. Among these isolates, J5 had the highest degradation efficiency, and was identified as Klebsiella variicola based on phylogenetic anal. and a metabolic profile generating by Biolog GEN III system. Bioremediation of quinclorac injury was confirmed using pot assays with tobacco, in which J5 reversed the detrimental effect of quinclorac on leaf area, leaf number, and plant height. The J5 isolate also seemed to promote plant growth, in terms of tobacco seedling growth and seed germination, which were 2.2 times and 1.6 times higher compared to untreated control, resp. The mechanisms of plant growth promoting (PGP) traits were found to involve nitrogen-fixing, indole-3-acetic acid (IAA) production, and phosphate solubilization ability. In addition, proteomic anal. and relative quant. PCR revealed an elevated level of 4-hydroxyphenylacetate 3-monooxygenase (HPMO) in quinclorac-treated J5, suggesting that this enzyme may play an important role in quinclorac remediation. This study showed that the J5 isolate could be exploited to not only assist in soil remediation due to quinclorac residue issues but also promote tobacco growth.

World Journal of Microbiology & Biotechnology published new progress about Germination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

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

Li, Dongdong; Liang, Jianwen; Robertson, Stuart J.; Chen, Yingtong; Wang, Naiguang; Shao, Minhua; Shi, Zhicong published the artcile< Heterogeneous Bimetallic Organic Coordination Polymer-Derived Co/Fe@NC Bifunctional Catalysts for Rechargeable Li-O2 Batteries>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is bimetallic organic polymer bifunctional catalyst lithium oxide battery; Li−O2 battery; MOCPs; bifunctional catalyst; dual metal sites; nitrogen-doped carbon.

The Li-O2 battery has attracted substantial attention due to its high theor. energy d. In particular, high-efficiency oxygen catalysts are very important for the design of practical Li-O2 batteries. Herein, we have synthesized heterogeneous crystalline-coated partially crystalline bimetallic organic coordination polymers (PC@C-BMOCPs), which are further pyrolyzed to obtain Co- and Fe-based nanoparticles embedded within rodlike N-doped carbon (Co/Fe@NC) as a bifunctional oxygen reduction reaction/oxygen evolution reaction (ORR/OER) catalyst used in the Li-O2 battery. Owing to excellent ORR/OER catalytic ability, the Co/Fe@NC bifunctional catalyst exhibits an efficient reversible reaction between O2 and Li2O2. Addnl., a large number of mesoporous channels are present in the core-shell Co/Fe@NC nanoparticles. These channels not only promote the diffusion of Li+ and O2, but also create ample room to store insoluble discharge product Li2O2. The Li-O2 batteries utilizing the bifunctional Co/Fe@NC oxygen electrode exhibit a large capacity of 17,326 mAh g-1, a long cycling life of more than 250 cycles, and excellent reversibility. This work provides a universally applicable strategy for designing nonnoble metal ORR/OER catalysts with excellent electrochem. performance for metal-air batteries.

ACS Applied Materials & Interfaces published new progress about Battery cathodes. 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

Drusian, Luca; Nigro, Elisa Agnese; Mannella, Valeria; Pagliarini, Roberto; Pema, Monika; Costa, Ana S. H.; Benigni, Fabio; Larcher, Alessandro; Chiaravalli, Marco; Gaude, Edoardo; Montorsi, Francesco; Capitanio, Umberto; Musco, Giovanna; Frezza, Christian; Boletta, Alessandra published the artcile< mTORC1 Upregulation Leads to Accumulation of the Oncometabolite Fumarate in a Mouse Model of Renal Cell Carcinoma>, Related Products of 112-63-0, the main research area is renal cell carcinoma FH gene fumarate accumulation mTORC1; TCA cycle; cancer metabolism; cancer signaling; epithelial transformation; fumarate hydratase; metabolic reprogramming; papillary carcinoma; rapamycin; renal cancer; renal cysts.

Renal cell carcinomas (RCCs) are common cancers diagnosed in more than 350,000 people each year worldwide. Several pathways are de-regulated in RCCs, including mTORC1. However, how mTOR drives tumorigenesis in this context is unknown. The lack of faithful animal models has limited progress in understanding and targeting RCCs. Here, we generated a mouse model harboring the kidney-specific inactivation of Tsc1. These animals develop cysts that evolve into papillae, cystadenomas, and papillary carcinomas. Global profiling confirmed several metabolic derangements previously attributed to mTORC1. Notably, Tsc1 inactivation results in the accumulation of fumarate and in mTOR-dependent downregulation of the TCA cycle enzyme fumarate hydratase (FH). The re-expression of FH in cellular systems lacking Tsc1 partially rescued renal epithelial transformation. Importantly, the mTORC1-FH axis is likely conserved in human RCC specimens. We reveal a role of mTORC1 in renal tumorigenesis, which depends on the oncometabolite fumarate.

Cell Reports published new progress about Antioxidants. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

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

Varghese, Reji; George, Subi J.; Ajayaghosh, Ayyappanpillai published the artcile< Anion induced modulation of self-assembly and optical properties in urea end-capped oligo(p-phenylenevinylene)s>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is phenylenevinylene urea self assembly tetrabutylammonium fluoride tunable emission.

The non-emissive supramol. assembly of urea end-capped oligo(p-phenylenevinylene) fluorophores turned strongly emissive in the presence of tetrabutylammonium fluoride which has implications in the anion controlled design of supramol. architectures with tunable emission properties.

Chemical Communications (Cambridge, United Kingdom) published new progress about Fluorescence. 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

Fernandez Gonzalez, Davinia; Brand, Jonathan P.; Mondiere, Regis; Waser, Jerome published the artcile< Ethynylbenziodoxolones (EBX) as Reagents for the Ethynylation of Stabilized Enolates>, Product Details of C19H34O2, the main research area is alkynylation cyclic keto ester amide ethynyl benziodoxolone reagent; safety ethynylbenziodoxolone; enantioselective alkynylation cyclic keto ester ethynylbenziodoxolone; enolate ethynylation ethynylbenziodoxolone.

Herein, we report a detailed study on the electrophilic alkynylation of cyclic keto esters and amides with ethynylbenziodoxolone (EBX) reagents [e.g., tert-Bu 1-oxo-2-indancarboxylate + reagent I in presence of TBAF → II in 57% yield]. The structure and stability of this class of reagents is first described more in details. Differential scanning calorimetry (DSC) experiments showed a strong exothermic decomposition with EBX reagents, leading to guidelines for the safe use of these compounds The extension of the method to aromatic alkynes and a broad range of benziodoxol(on)e reagents is then reported. Based on our preliminary results using Cinchona-based phase-transfer catalysts, the enantioselective alkynylation of cyclic keto esters could be achieved. Binaphthyl-derived ammonium catalysts developed by Maruoka and co-workers gave the highest asym. induction with up to 79% ee for an indanone-derived keto ester. Throughout this work, asym. induction was observed only in the case of benziodoxolone reagents, demonstrating their superiority over conventional alkynyliodonium salts. The deeper understanding gained about the factors leading to higher asym. induction will be very useful in the future to develop a truly general and highly enantioselective alkynylation method.

Advanced Synthesis & Catalysis published new progress about Alkynylation (electrophilic). 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

Maki, Toshikatsu; Ishihara, Kazuaki; Yamamoto, Hisashi published the artcile< New boron(III)-catalyzed amide and ester condensation reactions>, Quality Control of 617-55-0, the main research area is boron catalysis carboxylic acid esterification amidation green chem; polystyrene bound alkylated boronopyridinium salt preparation catalysis esterification amidation; Ritter addition catalysis benzodioxaborole; crystal structure cyclocondensed dodecamer quaternized boronopyridinium iodide; mol structure cyclocondensed dodecamer quaternized boronopyridinium iodide.

In 1996, the authors reported that benzeneboronic acids bearing electron-withdrawing groups at the meta- or para-position are highly effective catalysts for the amide condensation reaction in less-polar solvents. The authors now report that N-alkyl-4-boronopyridinium halides are more effective catalysts than the previous ones in more polar solvents. N-Alkyl-4-boronopyridinium halides are effective not only for amide condensation between equimolar mixtures of carboxylic acids and amines but also for the esterification of α-hydroxycarboxylic acids in alc. solvents. Furthermore, perchlorocatecholborane is more effective than areneboronic acids for the amide condensation of sterically demanding carboxylic acids. Lewis acid-assisted Bronsted acid (LBA), which was prepared from a 1:2 M mixture of boric acid and tetrachlorocatechol, is effective for the Ritter reaction from alcs. and nitriles to amides. The crystal and mol. structures of a cyclocondensed dodecamer of 4-borono-1-methylpyridinium iodide were determined by x-ray crystallog.

Tetrahedron published new progress about Addition reaction catalysts (Ritter). 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Quality Control of 617-55-0.

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

Ding, Huai-Wei; Wang, Shu; Qin, Xiao-Chun; Wang, Jian; Song, Hong-Rui; Zhao, Qing-Chun; Song, Shao-Jiang published the artcile< Design, synthesis, and biological evaluation of some novel 4-aminoquinazolines as Pan-PI3K inhibitors>, Product Details of C19H34O2, the main research area is aminoquinazolines PI3K inhibitor anticancer; 4-Aminoquinazolines; Anticancer; PI3K.

A series of 4-aminoquinazolines derivatives containing hydrophilic group were designed and identified as potent Pan-PI3K inhibitors in this study. The results of antiproliferative assays in vitro showed that this series of compounds had strong inhibition of tumor growth, especially compound 7b for MCF-7 cells but weak inhibition to normal cells. PI3K kinase assay showed that 7b had high activity for three PI3K isoforms with the IC50 values of picomole. The western blot assay indicated that 7b could decrease the phospho-Akt (S473) in a dose-dependent manner. Further experiments showed that 7b could induce apoptosis in MCF-7 cells. Four key hydrogen bonding interactions were found in the docking of 7b with PI3K kinase. All these results suggested that 7b is a potent PI3K inhibitor and could be considered as a potential candidate for the development of anticancer agents.

Bioorganic & Medicinal Chemistry published new progress about Antiproliferative agents. 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

Ahmed, Moinuddin Md.; Mortensen, Matthew S.; O’Doherty, George A. published the artcile< De Novo Synthesis of 2-Substituted syn-1,3-Diols via an Iterative Asymmetric Hydration Strategy>, Electric Literature of 112-63-0, the main research area is ester dihydroxy benzylidene protected asym synthesis; dienoate enantioselective regioselective Sharpless dihydroxylation; carbonate cyclic asym synthesis stereoselective reduction palladium catalyst; unsaturated ester hydroxy asym synthesis diastereoselective hydration.

The enantioselective syntheses of several protected 4-substituted syn-3,5-dihydroxy carboxylic esters have been achieved from the corresponding achiral (E,E)- or (E,Z)-1,3-dienoates. The route relies upon an enantio- and regioselective Sharpless dihydroxylation and a palladium-catalyzed reduction to form γ-substituted δ-hydroxy-1-enoates. The resulting δ-hydroxy-1-enoates are subsequently converted into benzylidene-protected 4-substituted syn-3,5-dihydroxy carboxylic esters in one step. The benzylidene-protected 3,5-dihydroxy carboxylic esters are produced in good overall yields (20-54%) and high enantiomeric excess (73-97% ee).

Journal of Organic Chemistry published new progress about Carbonates Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 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

Jaumaux, Pauline; Yang, Xu; Zhang, Bao; Safaei, Javad; Tang, Xiao; Zhou, Dong; Wang, Chunsheng; Wang, Guoxiu published the artcile< Localized Water-In-Salt Electrolyte for Aqueous Lithium-Ion Batteries>, Product Details of C19H34O2, the main research area is water lithium nitrate manganese oxide ion battery electrolyte stability; 1,5-pentanediol; aqueous lithium ion battery; lithium nitrate; localized water-in-salt electrolyte; solid electrolyte interphase.

Water-in-salt (WIS) electrolytes using super-concentrated organic lithium (Li) salts are of interest for aqueous Li-ion batteries. However, the high salt cost, high viscosity, poor wettability, and environmental hazards remain a great challenge. Herein, we present a localized water-in-salt (LWIS) electrolyte based on low-cost lithium nitrate (LiNO3) salt and 1,5-pentanediol (PD) as inert diluent. The addition of PD maintains the solvation structure of the WIS electrolyte, improves the electrolyte stability via hydrogen-bonding interactions with water and NO3- mols., and reduces the total salt concentration By in situ gelling the LWIS electrolyte with tetraethylene glycol diacrylate (TEGDA) monomer, the electrolyte stability window can be further expanded to 3.0 V. The as-developed Mo6S8|LWIS gel electrolyte|LiMn2O4 (LMO) batteries delivered outstanding cycling performance with an average Coulombic efficiency of 98.53% after 250 cycles at 1 C.

Angewandte Chemie, International Edition published new progress about Battery anodes. 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