Category: esters-buliding-blocks

Njeri, Dancan K.; Valenzuela, Erik Alvarez; Ragains, Justin R. published the artcile< Leveraging Trifluoromethylated Benzyl Groups toward the Highly 1,2-Cis-Selective Glucosylation of Reactive Alcohols>, COA of Formula: C11H15NO3, the main research area is glycoside disaccharide stereoselective glycosylation catalyst methylsilyl iodide phenyl phosphine.

Here, we demonstrate that substitution of the benzyl groups of glucosyl imidate donors with trifluoromethyl results in a substantial increase in 1,2-cis-selectivity when activated with TMS-I in the presence of triphenylphosphine oxide. Stereoselectivity is dependent on the number of trifluoromethyl groups (4-trifluoromethylbenzyl vs 3,5-bis-trifluoromethylbenzyl). Particularly encouraging is that we observe high 1,2-cis-selectivity with reactive alc. acceptors.

Organic Letters published new progress about Disaccharides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 34637-22-4 belongs to class esters-buliding-blocks, and the molecular formula is C11H15NO3, COA of Formula: C11H15NO3.

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

Kitabayashi, Nanako; Nakao, Shohei; Mita, Yuichiro; Arisawa, Kotoko; Hoshi, Takayuki; Toyama, Takashi; Ishii, Kiyo-aki; Takamura, Toshinari; Noguchi, Noriko; Saito, Yoshiro published the artcile< Role of selenoprotein P expression in the function of pancreatic å°?cells: Prevention of ferroptosis-like cell death and stress-induced nascent granule degradation>, Product Details of C15H22N2O2, the main research area is pancreatic beta cells ferroptosis cell death; Ferroptosis; GPX4; Pancreatic å°?cells; Selenoprotein K; Selenoprotein P; Stress-induced nascent granule degradation (SINGD).

Selenoprotein P (SELENOP) is a major selenium (Se)-containing protein (selenoprotein) in human plasma that is mainly synthesized in the liver. SELENOP transports Se to the cells, while SELENOP synthesized in peripheral tissues is incorporated in a paracrine/autocrine manner to maintain the levels of cellular selenoproteins, called the SELENOP cycle. Pancreatic å°?cells, responsible for the synthesis and secretion of insulin, are known to express SELENOP. Here, using MIN6 cells as a mouse model for pancreatic å°?cells and Selenop small interfering (si)RNA, we found that Selenop gene knockdown (KD) resulted in decreased cell viability, cellular pro/insulin levels, insulin secretion, and levels of several cellular selenoproteins, including glutathione peroxidase 4 (Gpx4) and selenoprotein K (Selenok). These dysfunctions induced by Selenop siRNA were recovered by the addition of Se. Ferroptosis-like cell death, regulated by Gpx4, was involved in the decrease of cell viability by Selenop KD, while stress-induced nascent granule degradation (SINGD), regulated by Selenok, was responsible for the decrease in proinsulin. SINGD was also observed in the pancreatic å°?cells of Selenop knockout mice. These findings indicate a significant role of SELENOP expression for the function of pancreatic å°?cells by maintaining the levels of cellular selenoproteins such as GPX4 and SELENOK.

Free Radical Biology & Medicine published new progress about Antioxidants. 347174-05-4 belongs to class esters-buliding-blocks, and the molecular formula is C15H22N2O2, Product Details of C15H22N2O2.

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

Malsawmdawngliana; Zohmachhuana, Alex; Vabeiryureilai, M.; Thangjam, Nurpen Meitei; Lalrinzuali, K.; Kumar, N. Senthil; Kumar, Awadhesh published the artcile< Antioxidant efficacy and cytotoxicity of ethanol extract of Clerodendrum infortunatum against different cell lines>, Category: esters-buliding-blocks, the main research area is Clerodendrum infortunatum cell line ethanol extract antioxidant efficacy cytotoxicity.

Clerodendrum infortunatum belongs to the Lamiaceae family and is a perennial shrub. It is widely known for their important medicinal values among the Mizo tribe. In the present study, the preliminary phytochem. screening, quantification of phenols, flavonoids and alkaloids, antioxidant activities by DPPH, O2- and ABTS assays and cytotoxicity by MTT assay against AGS (gastric cancer), HeLa (cervical) and HT-29 (colon) cell lines compared with normal cell line (Chang liver) were performed. Furthermore, the GC-MS profiling was also conducted. The results imply the presence of saponin, alkaloid, cardiac glycoside, phenol and flavonoid. The quantification shows that phenol content (64.35 mg/ g) was highest followed by flavonoid (61.93 mg/ g) and alkaloid (13.33 mg/ g). Its scavenging efficiency against DPPH with IC50 value was 47.99, against O2- with IC50 was 108 渭g/mL and against ABTS cations with IC50 was 50.05 渭g/mL, resp. The ethanol extract exhibited a maximum cytotoxicity against HeLa with IC50 value of 53.55 渭g/mL, AGS with IC50 value 82.44 渭g/mL and HT-29 with IC50 value of 142.2 渭g/mL. However, the extract showed comparatively less toxicity against normal cell lines. Moreover, 14 active compounds were confirmed in the GC-MS anal. of the extract HPLC study also infers the occurrence of the flavonoids rutin and quercetin. Therefore, the results of C. infortunatum ethanolic extract clearly specified that it has a very high antioxidant activity as well as cytotoxic properties; which proved that this ethnomedicinal plant can be used as an alternative agent to treat a variety of illnesses.

Indian Journal of Biochemistry & Biophysics published new progress about Alkaloids Role: ANT (Analyte), ANST (Analytical Study). 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

Mamman, S.; Suah, F. B. M.; Raaov, M.; Mehamod, F. S.; Asman, S.; Zain, N. N. M. published the artcile< Removal of bisphenol A from aqueous media using a highly selective adsorbent of hybridization cyclodextrin with magnetic molecularly imprinted polymer>, SDS of cas: 3290-92-4, the main research area is magnetic molecularly imprinted polymer bisphenol adsorption structural thermodynamical property; adsorption; bisphenol A; molecularly imprinted polymer; water samples; å°?cyclodextrin.

In this study, a unique magnetic molecularly imprinted polymer (MMIP) adsorbent towards bisphenol A (BPA) as a template mol. was developed by bulk polymerization using å°?cyclodextrin (å°?CD) as a co-monomer with methacrylic acid (MAA) to form MMIP MAA-å°¾CD as a new adsorbent. å°?CD was hybridized with MAA to obtain water-compactible imprinting sites for the effective removal of BPA from aqueous samples. Benzoyl peroxide and trimethylolpropane trimethacrylate were used as the initiator and cross-linker, resp. The adsorbents were characterized by Fourier transform IR spectroscopy, scanning electronic microscopy, transmission electron microscopy, vibrating sample magnetometer, Brunauer-Emmett-Teller and X-ray diffraction. 1H NMR spectroscopy was used to characterize the MAA-å°¾CD and BPA-MAA-å°¾CD complex. Several parameters influencing the adsorption efficiency of BPA such as adsorbent dosage, pH of sample solution, contact time, initial concentrations and temperature as well as selectivity and reusability study have been evaluated. MMIP MAA-å°¾CD showed significantly higher removal efficiency and selective binding capacity towards BPA compared to MMIP MAA owing to its unique morphol. with the presence of å°?CD. The kinetics data can be well described by the pseudo second-order kinetic and Freundlich isotherm and Halsey models best fitted the isotherm data. The thermodn. studies indicated that the adsorption reaction was a spontaneous and exothermic process. Therefore, MMIP based on the hybrid monomer of MAA-å°¾CD shows good potential of a new monomer in molecularly imprinted polymer preparation and can be used as an effective adsorbent for the removal of BPA from aqueous solutions

Royal Society Open Science published new progress about Adsorbents. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, SDS of cas: 3290-92-4.

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

Kovtunenko, V. A.; Kisel, V. M.; Tyltin, A. K.; Babichev, F. S. published the artcile< Novel approach to the synthesis of dibenz[b,f]azocine system>, Formula: C19H34O2, the main research area is dibenzazocine acetylcyanohydroxydihydro preparation IR; cyanomethylbenzylanthranilate preparation acetylation; acetylcyanomethylbenzylanthranilate preparation cyclocondensation.

Alkylating o-H2NC6H4CO2Et with o-BrCH2C6H4CH2CN in Me2CHOH containing NaOAc gave 54% o-NCCH2C6H4CH2NRC6H4CO2Et-o (I; R = H), which was acetylated with AcCl in dry dioxane containing Et3N to give 94% I (R = Ac). Intramol. cyclocondensation reaction of the latter on heating in Me3COH containing KOCMe3 gave 73% title derivative II, the IR spectrum of which showed no keto tautomer either in the solid state or in DMSO solution

Khimiya Geterotsiklicheskikh Soedinenii published new progress about Cyclocondensation reaction, intramolecular. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.

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

Ren, Shisong; Liu, Xueyan; Erkens, Sandra; Lin, Peng; Gao, Yangming published the artcile< Multi-component analysis, molecular model construction, and thermodynamics performance prediction on various rejuvenators of aged bitumen>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is methyl palmitate tetradecane hexadecahydro pyrene octadecane aged bitumen viscosity.

The mol. dynamics (MD) simulation method is proved as an efficient tool to explore the intermol. interaction between rejuvenators and aged bitumen, but the simple “”single-mol.”” model of rejuvenator would bring the inaccuracy to simulation outputs due to a huge difference with its realistic multi-component chrematistic. This study aims to in-depth analyze the chem. components of four commonly-used rejuvenators with the Gas chromatog.-mass spectrometry (GC-MS) method, and propose their multi-component mol. models for the first time. Further, MD simulations are performed on the multi-component models of various rejuvenators to anticipate and compare their at.-level properties. The GC-MS results reveal that the chem. components of petroleum-based rejuvenators are more complicated than the bio-oil (BO). The alkane, naphthenic, and aromatic mols. are the main constituents of engine-oil (EO), naphthenic-oil (NO), and aromatic-oil (AO) rejuvenators. The exptl. d. results validate the reliability of these multi-component mol. models of four rejuvenators. From the MD simulations outputs, there is a significant difference in the energetic indexes, cohesive energy d. (CED), solubility parameter æœ? volumetric parameters, dynamic behaviors, structural indicators, expansion coefficient (ä¼?and å°?, and isobaric heat capacity (Cp) between the multi-component models of four rejuvenators. However, the multi-component mol. model of aromatic-oil based on the GC-MS method is not accurate because the polycyclic aromatic mols. with heavy-weight are not detected and considered. This study detects the difference in chem. components and thermodn. properties between four rejuvenators and proposes their more realistic multi-component mol. models for further MD simulations on the rejuvenation of aged bitumen.

Journal of Molecular Liquids published new progress about Activation energy. 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

Guo, Qianjin; Liu, Qiang; Zhao, Yixin published the artcile< Insights into the Structure and Dynamics of Imidazolium Ionic Liquid and Tetraethylene Glycol Dimethyl Ether Cosolvent Mixtures: A Molecular Dynamics Approach>, Application In Synthesis of 112-63-0, the main research area is imidazolium ionic liquid tetraethylene glycol dimethyl ether cosolvent mixture; dynamical and transport properties; hybrid binary mixtures; ionic liquids; molecular dynamics (MD) simulations; thermophysical properties.

In this work, the effect of mol. cosolvents tetraethylene glycol di-Me ether (TEGDME) on the structure and versatile nature of mixtures of these compounds with imidazolium-based ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) is analyzed and discussed at a mol. level by means of all-atom mol. dynamics (MD) simulations. In the whole concentration range of the binary mixtures, the structures and properties evolution was studied by means of systematic mol. dynamics simulations of the fraction of hydrogen bonds, the radial and spatial distribution functions for the various mol. ions and mol. species in the system, together with the snapshots visualization of equilibrated simulation boxes with a color-coding scheme and the rotational dynamics of coumarin 153 (C153) in the binary mixtures The goal of the work is to provide a mol.-level understanding of significant improvement of ionic conductivity and self-diffusion with the presence of TEGDME as a cosolvent, which causes an enhancement to the ion translational motion and fluidity in the [bmim][PF6] ionic liquids (ILs). Under a mixture concentration change, the microstructure changes of [bmim][PF6] with the TEGDME molar fraction (XTEG) above 0.50 show a slight difference from that of neat [bmim][PF6] IL and concentrated [bmim][PF6]/TEGDME mixture in terms of the radial and spatial distribution functions. The relative diffusivities of solvent mols. to cations as a function of concentration were found to depend on the solvent but not on the anion. A TEGDME increase is found to be advantageous to the dissipation of the polar regions as well as the nonpolar regions in the [bmim][PF6] ionic liquids These conclusions are consistent with the exptl. results, which verified that the unique, complex, and versatile nature of [bmim][PF6]/TEGDME mixture can be correctly modeled and discussed at a mol. level using MD simulation data.

Nanomaterials published new progress about Binary mixtures. 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

Sun, Tao; Feng, Xi-Lan; Sun, Qi-Qi; Yu, Yue; Yuan, Guo-Bao; Xiong, Qi; Liu, Da-Peng; Zhang, Xin-Bo; Zhang, Yu published the artcile< Solvation Effect on the Improved Sodium Storage Performance of N-Heteropentacenequinone for Sodium-Ion Batteries>, Related Products of 112-63-0, the main research area is heteropentacenequinone sodium ion battery solvation effect; electrolytes; organic electrode; sodium-ion batteries; solvation effect.

The performance of electrode material is correlated with the choice of electrolyte, however, how the solvation has significant impact on electrochem. behavior is underdeveloped. Herein, N-heteropentacenequinone (TAPQ) is investigated to reveal the solvation effect on the performance of sodium-ion batteries in different electrolyte environment. TAPQ cycled in diglyme-based electrolyte exhibits superior electrochem. performance, but experiences a rapid capacity fading in carbonate-based electrolyte. The function of solvation effect is mainly embodied in two aspects: one is the stabilization of anion intermediate via the compatibility of electrode and electrolyte, the other is the interfacial electrochem. characteristics influenced by solvation sheath structure. By revealing the failure mechanism, this work presents an avenue for better understanding electrochem. behavior and enhancing performance from the angle of solvation effect.

Angewandte Chemie, International Edition published new progress about Aromatic compounds Role: TEM (Technical or Engineered Material Use), USES (Uses). 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

Huang, Zhiliang; Guan, Renpeng; Shanmugam, Muralidharan; Bennett, Elliot L.; Robertson, Craig M.; Brookfield, Adam; McInnes, Eric J. L.; Xiao, Jianliang published the artcile< Oxidative Cleavage of Alkenes by O2 with a Non-Heme Manganese Catalyst>, Safety of Ethyl 3-oxo-3-phenylpropanoate, the main research area is alkene oxygen light manganese oxidation catalyst; ketone preparation.

The oxidative cleavage of C=C double bonds with mol. oxygen to produce carbonyl compounds is an important transformation in chem. and pharmaceutical synthesis. In nature, enzymes containing the first-row transition metals, particularly heme and non-heme iron-dependent enzymes, readily activate O2 and oxidatively cleave C=C bonds with exquisite precision under ambient conditions. The reaction remains challenging for synthetic chemists, however. There are only a small number of known synthetic metal catalysts that allow for the oxidative cleavage of alkenes at an atm. pressure of O2, with very few known to catalyze the cleavage of nonactivated alkenes. In this work, we describe a light-driven, Mn-catalyzed protocol for the selective oxidation of alkenes to carbonyls under 1 atm of O2. For the first time, aromatic as well as various nonactivated aliphatic alkenes could be oxidized to afford ketones and aldehydes under clean, mild conditions with a first row, biorelevant metal catalyst. Moreover, the protocol shows a very good functional group tolerance. Mechanistic investigation suggests that Mn-oxo species, including an asym., mixed-valent bis(�oxo)-Mn(III,IV) complex, are involved in the oxidation, and the solvent methanol participates in O2 activation that leads to the formation of the oxo species.

Journal of the American Chemical Society published new progress about Aldehydes Role: SPN (Synthetic Preparation), PREP (Preparation). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Safety of Ethyl 3-oxo-3-phenylpropanoate.

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

Fukuyama, Takahide; Bando, Takanobu; Ryu, Ilhyong published the artcile< Electron-Transfer-Induced Intramolecular Heck Carbonylation Reactions Leading to Benzolactones and Benzolactams>, Electric Literature of 112-63-0, the main research area is benzolactone benzolactam preparation; benzyl alc amine carbon monoxide intramol Heck carbonylation.

A metal-catalyst-free intramol. Heck carbonylation reaction of benzyl alcs. and benzyl amines with carbon monoxide under heating at 250�affords the corresponding benzolactones and benzolactams in good to excellent yields. A hybrid radical/ionic chain mechanism, involving electron transfer from radical anions generated by nucleophilic attack of alcs. or amines on intermediate acyl radicals, is proposed.

Synthesis published new progress about Aralkyl alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 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