Month: November 2022

Wang, Fujing; Fan, Jiaer; Pei, Tingting; He, Zhuoen; Zhang, Jiaxing; Ju, Liliang; Han, Zhongxiao; Wang, Mingqing; Xiao, Wei published the artcile< Effects of shenkang pills on early-stage diabetic nephropathy in db/db mice via inhibiting AURKB/ RacGAP1/RhoA signaling pathway>, Product Details of C19H34O2, the main research area is shenkang nephroprotective agent AURKB RacGAP1 RhoA diabetic nephropathy; AURKB; LC/MS; RacGAP1; RhoA; diabetic nephropathy; shenkang pills; transcriptome.

Diabetic nephropathy (DN) is the leading cause of end-stage renal disease, so there is an urgent need to suppress its development at early stage. Shenkang pills (SKP) are a hospital prescription selected and optimized from effective traditional Chinese medicinal formulas for clin. treatment of DN. In the present study, liquid chromatog.-quadrupole-time of flight-mass spectrometry (LC-Q-TOF-MS) and total contents qualification were applied to generate a quality control standard of SKP. For verifying the therapeutic effects of SKP, db/db mice were administered intragastrically with SKP at a human-equivalent dose (1.82 g/kg) for 4 wk. Moreover, the underlying mechanism of SKP were analyzed by the renal RNA sequencing and network pharmacol. LC-Q-TOF-MS identified 46 compounds in SKP. The total polysaccharide and organic acid content in SKP were 4.60 and 0.11 mg/mL, resp., while the total flavonoid, saponin, and protein content were 0.25, 0.31, and 0.42 mg/mL, resp. Treatment of SKP significantly reduced fasting blood glucose, improved renal function, and ameliorated glomerulosclerosis and focal foot processes effacement in db/db mice. In addition, SKP protected podocytes from injury by increasing nephrin and podocin expression. Furthermore, transcriptome analyses revealed that 430 and 288 genes were up and down-regulated in mice treated with SKP, relative to untreated controls. Gene ontol. enrichment anal. revealed that the differentially expressed genes mainly involved in modulation of cell division and chromosome segregation. Weighted gene co-expression network anal. and network pharmacol. anal. indicated that aurora kinase B (AURKB), Rac GTPase activating protein 1 (RacGAP1) and SHC binding, and spindle associated 1 (shcbp1) might be the core targets of SKP. This protein and Ras homolog family member A (RhoA) were found overexpression in db/db mice, but significantly decreased with SKP treatment. We conclude that SKP can effectively treat early-stage DN and improve renal podocyte dysfunction. The mechanism may involve down-regulation of the AURKB/RacGAP1/ RhoA pathway.

Frontiers in Pharmacology published new progress about Adenosine A1 receptors Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Baumeister, Bodo; Sakai, Naomi; Matile, Stefan published the artcile< p-Octiphenyl β-barrels with ion channel and esterase activity>, Application In Synthesis of 112-63-0, the main research area is octiphenyl beta barrel ion channel esterase activity.

Design, synthesis, and esterase and ion channel activity of a novel barrel-stave supramol. with hydrophobic exterior and histidine-rich interior are reported. Voltage-dependent binding of pyrenyl-8-oxy-1,3,6-trisulfonates by histidines within p-octiphenyl β-barrels (and not monomers) via ionic (and not hydrophobic) interactions (KD, KI, KM < 1 μM) is the basis for superb esterolytic proficiency up to (kcat/KM)/kuncat = 9.6 × 105 in water and bilayer membranes. The conductance of labile ion channels formed in planar bilayer membranes is shown to be reduced by 8-hydroxypyrene-1,3,6-trisulfonate on the single- and multichannel level. Organic Letters published new progress about Electric conductivity. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

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

Kamel Ariffin, Maryam Farhana; Idris, Ani published the artcile< FeCl3.6H2O Chitosan coated superparamagnetic nanoparticles supporting lipase enzyme from Candida Antarctica for microwave assisted biodiesel production>, Electric Literature of 112-63-0, the main research area is Chitosan superparamagnetic nanoparticles microwave assisted biodiesel production.

Biocatalysis has emerged as a green technol. in chem. based catalysis. Immobilization of enzymes onto magnetized nanomaterials enhances downstream processing as it eases their separation from reaction mixture Synthesis of the nanoparticles was performed in an aqueous solution of FeCl3.6H2O as precursor and NH3 as nucleating agent under microwave irradiation The maghemite complex was crosslinked with glutaraldehyde to provide conducive environment for enzyme immobilization. Stability of produced immobilized lipases against different conditions were evaluated such as working temperatures from 27°C to 85°C and retained more than 64% of its activity at 85°C. The immobilized lipase complex was able to withstand a wide range of acidic to alk. environment from pH 5.5 to pH 9.5. The enzyme retains more than 59% of its activity after 14 days of storage and can be recycled for more than 7 cycles with remaining high activity at 93.7%. Developed enzyme was then subjected to microwave irradiation for transesterification of palm oil to produce biodiesel. Highest biodiesel recovery achieved from microwave assisted immobilized lipase catalyzed transesterification of palm oil was 70.2%. The phys. properties of produced biodiesel was evaluated and fulfilled the ASTM general requirement for fuels.

Renewable Energy published new progress about Catalysis. 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

Ivasyshyn, Viktor; Smit, Hans; Chiechi, Ryan C. published the artcile< Synthesis of a Hominal Bis(difluoromethyl) Fragment>, Category: esters-buliding-blocks, the main research area is hominal bisdifluoromethyl fragment preparation; desulfurative fluorination dithiolane pyridinium fluoride; deoxofluorination keto group morpholinosulfur trifluoride.

This paper describes the synthesis of a discrete unit of hominal bis(gem-CF2). The controlled introduction of fluorine atoms is a powerful synthetic tool to introduce dipole moments with minimal impact to sterics. Poly(vinylidene difluoride) is a striking example of the influence of fluorine atoms, which impart ferroelec. behavior from the alignment of the dipole moments of CF2 units; however, it is prepared via direct polymerization of vinylidene difluoride. Thus, a different synthetic pathway is required to produce synthons containing discrete numbers of CF2 groups in a hominal relation to each other. We found out that, in the case of short chains, the consecutive deoxofluorination of sequentially introduced keto groups is inefficient, as it requires harsh conditions and decreasing yields at each step. To solve this problem, we combined the selective desulfurative fluorination of dithiolanes with pyridinium fluoride and the deoxofluorination of keto groups with morpholinosulfur trifluoride. This strategy is highly reproducible and scalable, allowing the synthesis of the hominal bis(gem-CF2) fragment as a shelf-stable tosylate, which can be used to install discrete chains of hominal bis(gem-CF2) on a variety of synthons and monomers.

ACS Omega published new progress about Dithiolanes 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, Category: esters-buliding-blocks.

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

Sakurai, Toru; Katsumata, Kenji; Udo, Ryutaro; Tago, Tomoya; Kasahara, Kenta; Mazaki, Junichi; Kuwabara, Hiroshi; Kawakita, Hideaki; Enomoto, Masanobu; Ishizaki, Tetsuo; Nemoto, Yukako; Osaka, Yoshiaki; Nagakawa, Yuichi; Sugimoto, Masahiro; Tsuchida, Akihiko published the artcile< Validation of Urinary Charged Metabolite Profiles in Colorectal Cancer Using Capillary Electrophoresis-Mass Spectrometry>, Product Details of C19H34O2, the main research area is colorectal cancer urinary charged metabolite capillary electrophoresis mass spectrometry; adenoma; capillary electrophoresis-mass spectrometry; colorectal cancer; metabolome.

This study aimed to validate and reanalyze urinary biomarkers for detecting colorectal cancers (CRCs). We previously conducted urinary metabolomic analyses using capillary electrophoresis-mass spectrometry and found a significant difference in various metabolites, especially polyamines, between patients with CRC and healthy controls (HC). We analyzed addnl. samples and confirmed consistency between the newly and previously analyzed data. In total, we included 36 HC, 34 adenoma (AD), and 214 CRC samples, which were used for subsequent analyses. Among the 132 quantified metabolites, 16 exhibited consistent differences in both datasets, which included polyamines, etc. Pathway analyses of the integrated data revealed significant differences in many metabolites, such as glutamine, and metabolites of the TCA (tricarboxylic acid cycle) and urea cycles. The discrimination ability of the combination of multiple metabolites among the three groups was evaluated, which yielded higher sensitivity than tumor markers. The Mann-Whitney test was employed to evaluate the prognosis predictivity of the assessed metabolites and the difference between the patients with or without recurrence, which yielded 16 significantly different metabolites. Among these 16 metabolites, 11 presented significant prognosis predictivity. These data indicated the potential of metabolite-based discrimination of patients with CRC and AD from HC and prognosis predictivity of the monitored metabolites.

Metabolites published new progress about Cancer antigen 19-9 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Beyett, Tyler S.; Gan, Xinmin; Reilly, Shannon M.; Gomez, Andrew V.; Chang, Louise; Tesmer, John J. G.; Saltiel, Alan R.; Showalter, Hollis D. published the artcile< Design, synthesis, and biological activity of substituted 2-amino-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxylic acid derivatives as inhibitors of the inflammatory kinases TBK1 and IKKε for the treatment of obesity>, Application of C19H34O2, the main research area is aminooxochromenopyridinecarboxylate inhibitor inflammatory kinase antiobesity obesity; crystal structure; Amlexanox; Inhibitor of nuclear factor kappa-B kinase subunit epsilon (IKKε); Obesity; SAR; TANK-binding kinase 1 (TBK1); TBK1·amlexanox co-crystal.

The noncanonical IκB kinases TANK-binding kinase 1 (TBK1) and inhibitor of nuclear factor kappa-B kinase ε (IKKε) play a key role in insulin-independent pathways that promote energy storage and block adaptive energy expenditure during obesity. Utilizing docking calculations and the x-ray structure of TBK1 bound to amlexanox, an inhibitor of these kinases with modest potency, a series of analogs was synthesized to develop a structure activity relationship (SAR) around the A- and C-rings of the core scaffold. A strategy was developed wherein R7 and R8 A-ring substituents were incorporated late in the synthetic sequence by utilizing palladium-catalyzed cross-coupling reactions on appropriate bromo precursors. Analogs display IC50 values as low as 210 nM and reveal A-ring substituents that enhance selectivity toward either kinase. In cell assays, selected analogs display enhanced phosphorylation of p38 or TBK1 and elicited IL-6 secretion in 3T3-L1 adipocytes better than amlexanox. An analog bearing a R7 cyclohexyl modification demonstrated robust IL-6 production in 3T3-L1 cells as well as a phosphorylation marker of efficacy and was tested in obese mice where it promoted serum IL-6 response, weight loss, and insulin sensitizing effects comparable to amlexanox. These studies provide impetus to expand the SAR around the amlexanox core toward uncovering analogs with development potential.

Bioorganic & Medicinal Chemistry published new progress about Antiobesity agents. 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

Shi, Honghui; Yang, Endian; Yang, Heyue; Huang, Xiaoling; Zheng, Mengxia; Chen, Xiaoyang; Zhang, Junjie published the artcile< Dynamic changes in the chemical composition and metabolite profiles of drumstick (Moringa oleifera Lam.) leaf flour during fermentation>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Moringa Aspergillus Candida Bacillus carbohydrate amino acids myoinositol oligosaccharides.

Solid-state fermentation (SSF) using mixed strains can increase the nutritional value and antioxidant content of Moringa oliefera Lam. leaf flour (MLF). However, little is known about the chem. composition and metabolite profiles of MLF during the fermentation process. In this work, mixed strains of Aspergillus Niger, Candida utilis and Bacillus subtilis were inoculated into MLF for SSF. The MLF′s contents of crude protein (CP), crude fiber (CF), water soluble carbohydrate (WSC), reducing sugar, tannin and phytic acid all changed significantly as fermentation proceeded. A metabolomic anal. was performed using GC-TOF-MS, resulting in the identification of 347 metabolites. Fermentation with mixed strains significantly affected levels of amino acids, sugars, and organic acids; concentrations of most amino acids, oligosaccharides, organic acids, nucleosides, γ-aminobutyric acid (GABA), and myo-inositol were higher after 3 d of SSF than at the start. Addnl., several intermediate metabolites were detected in 3 d fermented MLF. The mixed microorganisms′ metabolic activity thus seems to peak after 3 d of fermentation under the tested conditions. These results provide new insights into the changes in the chem. composition and metabolite content of MLF during SSF and reveal possibilities for producing valuable compounds via this process.

LWT–Food Science and Technology published new progress about Amino acids Role: ANT (Analyte), BSU (Biological Study, Unclassified), ANST (Analytical Study), BIOL (Biological Study). 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

Hu, Ze Kai; Cui, Hai Lei; Jiang, Kun; Chen, Ying Chun published the artcile< Enantioselective O-allylic alkylation of Morita-Baylis-Hillman carbonates with oxime>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Baylis Hillman carbonate oxime enantioselective allylic alkylation quinuclidine catalyst; unsaturated carboxylate oxime ether asym synthesis.

The enantioselective O-allylic alkylation of acetophenone oxime with various Morita-Baylis-Hillman (MBH) carbonates was accomplished by the catalysis of a com. available cinchona alkaloid (DHQD)2PHAL. The corresponding O-allylic products were obtained in moderate to excellent yields up to 96% ee.

Science in China, Series B: Chemistry published new progress about Alkylation catalysts, stereoselective. 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

Tigori, Mougo Andre; Kouyate, Amadou; Kouakou, Victorien; Niamien, Paulin Marius; Trokourey, Albert published the artcile< Computational approach for predicting the adsorption properties and inhibition of some antiretroviral drugs on copper corrosion in HNO3>, Category: esters-buliding-blocks, the main research area is nitric acid copper corrosion antiretroviral drug inhibition adsorption property.

The use of computational chem. as an effective means of designing eco-friendly organic corrosion inhibitors has been greatly enhanced by the development of D. Functional Theory (DFT). In this study, the inhibitory activity of four antiretroviral drugs, namely, lamivudine, emtricitabine, didanosine and stavudine, was analyzed by this theory. The quantum chem. parameters/descriptors calculated using DFT at B3LYP/6-31G(d) level were used to explain the mechanism of electron transfer between the inhibitors and the copper surface. The results showed that these compounds adsorb on copper surface. It is important to consider the effect of films formed by the adsorption products. In addition, the Fukui functions and the dual descriptor were used as indicators to locate the electrophilic and nucleophilic attack sites within each compound Finally, the DFT has enabled to accurately predict the adsorption properties and the good inhibition performance of the mols. in the solution studied.

European Journal of Chemistry published new progress about Adsorption. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.

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

Barbaro, Pierluigi; Liguori, Francesca; Oldani, Claudio; Moreno-Marrodan, Carmen published the artcile< Sustainable Catalytic Synthesis for a Bio-Based Alternative to the Reach-Restricted N-Methyl-2-Pyrrolidone>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is aquivion support platinum heterogeneous catalyst preparation nanostructure; ethyl levulinate heptylamine platinum catalyst one pot reductive amination; methyl pyrrolidone preparation.

A variety of bifunctional catalysts are prepared combining immobilized metal nanoparticles and acid solid materials featuring Lewis or Bronsted acidity was reported. The catalytic systems are tested in the reductive amination of bio-derived levulinates with primary amines, using hydrogen as clean reducing agent, to obtain N-substituted-5-methyl-2-pyrrolidones, which were proposed as substitutes for the widely used, REACH-restricted solvent N-methyl-2-pyrrolidone. The overall process was studied in depth to identify the best combination of metal and acid functionalities to be used in one-pot and one stage. Pt immobilized onto the Bronsted solid acid Aquivion is shown to be the most efficient catalyst, with a productivity of N-heptyl-5-methyl-2-pyrrolidone of 7.9 mmolgcat-1 h-1 reached at full conversion and 98.6% selectivity, under 120°C, 4 bar H2 pressure and solvent-free conditions.

Advanced Sustainable Systems published new progress about Nanoparticles. 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