Tag: M.W=250-300

Wettasinghe, Mahinda; Vasanthan, Thava; Temelli, Feral; Swallow, Kevin published the artcile< Volatiles from Roasted Byproducts of the Poultry-Processing Industry>, Category: esters-buliding-blocks, the main research area is chicken byproduct volatile composition.

Volatiles of roasted chicken breast muscle and byproducts, such as backbones, breastbones, spent bones, and skin, were investigated. Total volatile concentrations ranged from 2030 ppb in the roasted backbones to 4049 ppb in the roasted skin. The major classes of volatile compounds detected in roasted samples were aldehydes (648-1532 ppb) and alcs. (336-1006 ppb). Nitrogen- and/or sulfur-containing compounds were also detected in appreciable quantities (161-706 ppb) in all samples. For all samples, hexanal and 2-methyl-2-buten-1-ol were dominant among the aldehydes and alcs., resp. Among the nitrogen- and sulfur-containing compounds, Maillard reaction products, such as tetrahydropyridazines, piperidines, and thiazoles, were the major contributors to the total volatile content in all samples. The composition of volatiles observed in roasted byproducts was markedly different from that of the roasted breast muscle. Therefore, the blending of the byproducts in appropriate proportions or blending of volatile flavor extracts from different byproducts may be necessary to obtain an aroma that mimics roasted chicken aroma.

Journal of Agricultural and Food Chemistry published new progress about Alcohols Role: BAC (Biological Activity or Effector, Except Adverse), BSU (Biological Study, Unclassified), BIOL (Biological 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

Liu, Yang; Zhang, Zetian; Fan, Weiwei; Yang, Kaifeng; Li, Zhengjun published the artcile< Preparation of renewable gallic acid-based self-healing waterborne polyurethane with dynamic phenol-carbamate network: toward superior mechanical properties and shape memory function>, Computed Properties of 112-63-0, the main research area is isophorone diisocyanate gallic acid trimethylolpropane polyurethane mech property morphol.

Endowing thermoset self-healing polymers with excellent mech. properties and shape memory function by utilizing bio-based monomers is highly desirable for the development of the next-generation smart materials. To achieve this goal, herein, we developed a novel thermally induced self-healing system with robust mech. properties and shape memory function by incorporating dynamic phenol-carbamate bond formed by the polymerization reaction of the renewable gallic acid (GA) and isocyanate into waterborne polyurethane (GA-WPU) with excellent emulsion stability. Significantly, a good balance can be achieved between desirable self-healing ability (healing efficiency 81.1%) and robust mech. properties (tensile strength 45.1 MPa and elongation at break 576.5%) by adjusting dynamic phenol-carbamate bonds incorporated into the polymer networks, and compared with the reported self-healing polymers, the recovered tensile strength of our target polymer shows an overwhelming superiority. Furthermore, taking the advantage of the crystalline PBA (switching segment) and phenol-carbamate crosslinkages, the prepared GA-WPU polymer can rapidly recover from temporary shape to original shape by thermal energy (less than 30 s, and the shape fixity and recovery ratio remain above 91.5%). We envision that this elaborate strategy is instructive for designing mech. robust polymeric materials with self-healing, shape memory function and environmentally friendly characteristics.

Journal of Materials Science published new progress about Activation energy. 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

Brown, Richard T.; Dauda, Bukar E. N.; Kandasamy, Mythily; Santos, Cid A. M. published the artcile< Lonitoside: a novel monoterpenoid macrolide diglycoside from Lonicea nitida>, Electric Literature of 112-63-0, the main research area is lonitoside Lonicea mol structure.

Lonitoside has been isolated from L. nitida E. H. Wilson (Caprifoliaceae), and its structure elucidated as (E)-(6S)-8-[β-L-arabinopyranosyl-(1”→6′)-β-D-glucopyranosyloxy]-2,6-dimethyloct-2-eno-1,4”-lactone (I) by spectroscopic and degradation methods.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about Lonicera nitida. 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

Wang, Lei; Li, Sun; Bluemel, Marcus; Puttreddy, Rakesh; Peuronen, Anssi; Rissanen, Kari; Enders, Dieter published the artcile< Switchable Access to Different Spirocyclopentane Oxindoles by N-Heterocyclic Carbene Catalyzed Reactions of Isatin-Derived Enals and N-Sulfonyl Ketimines>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is spirocyclopentane oxindole preparation heterocycle carbene catalyst enal sulfonyl ketimine; N-heterocyclic carbenes; asymmetric synthesis; heterocylces; organocatalysis; spiro-compounds.

A novel NHC-catalyzed annulation protocol for the asym. synthesis of biol. important β-lactam fused spirocyclopentane oxindoles with four contiguous stereocenters, including two quaternary carbon centers, was developed. Alternatively, spirocyclopentane oxindoles containing an enaminone moiety can be achieved using the same starting materials, isatin-derived enals, and N-sulfonyl ketimines, in the presence of a slightly different NHC catalytic system. This switchable annulation strategy enables the selective assembly of both heterocyclic scaffolds with good yields and excellent enantioselectivities for a broad range of substrates.

Angewandte Chemie, International Edition published new progress about Alkenals Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

He, Tao; Liu, Li-Chuan; Ma, Wen-Peng; Li, Bin; Zhang, Qing-Wei; He, Wei published the artcile< Enantioselective Construction of Si-Stereogenic Center via Rhodium-Catalyzed Intermolecular Hydrosilylation of Alkene>, HPLC of Formula: 112-63-0, the main research area is dihydrosilane desymmetrization hydrosilylation allyl ether preparation chiral silane; rhodium BINAP BIPHEP catalyst enantioselective hydrosilylation allyl ether; Si-stereogenic center; alkenes; desymmetrization; hydrosilylation; rhodium.

Catalytic, enantioselective synthesis of Si-stereogenic silicon compounds ArSiEt(H)(CH2)3OR (Ar = 2,6-Cl2C6H3, R = aryl) was achieved by desymmetrization of dihydrosilanes ArSiEt(H)2 by hydrosilylation of allyl ethers catalyzed by rhodium BINAP- or BIPHEP-type catalysts. The reaction is regioselective, producing linear silanes with moderate enantioselectivities. This new method features a simple catalytic system, mild reaction conditions and a wide functional group tolerance.

Chemistry – A European Journal published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Wang, Yirui; You, Keyuan; You, Yan; Li, Qian; Feng, Guize; Ni, Jiahui; Cao, Xinyue; Zhang, Xiaowen; Wang, Yanhang; Bao, Weilian; Wang, Xu; Chen, Tongqing; Li, Haidong; Huang, Yuran; Lyu, Jiaren; Yu, Shihang; Li, Hong; Xu, Suowen; Zeng, Kewu; Shen, Xiaoyan published the artcile< Paeoniflorin prevents aberrant proliferation and differentiation of intestinal stem cells by controlling C1q release from macrophages in chronic colitis>, COA of Formula: C19H34O2, the main research area is C1q; C1qa; Chronic colitis; Intestinal stem cell; Macrophage; Paeoniflorin.

The pathol. features of inflammatory bowel disease necessitate therapeutic strategies aimed at restoring intestinal mucosal barrier function in addition to controlling inflammation. Paeoniflorin, a bioactive herbal constituent isolated from the root of Paeonia albiflora Pall, has been reported to protect against acute colitis in mice. However, the direct mol. target of paeoniflorin in preventing colitis remains elusive. Here, we evaluated the therapeutical effects of Paeoniflorin using IL-10-/- chronic colitis model, and explored the precise mechanism of action involved. Our results demonstrated that intragastric administration of Paeoniflorin significantly ameliorated inflammatory response and restored the aberrant intestinal proliferation and differentiation in IL-10-/-colitis mice. By utilizing a chem. biol. approach, we identified C1qa, a crucial component of C1q, is the direct target of Paeoniflorin. Binding of Paeoniflorin to C1qa prevented the cleavage of C1q on macrophages, resulting in the aggregation of surface membrane-anchored C1q and the diminished C1q secretion. The excessive surface membrane-anchored C1q significantly enhanced the phagocytic capability of macrophages and promoted the elimination of infiltrated bacteria and inflammatory cells in mouse colon. The reduced C1q secretion conferred by Paeoniflorin dampened Wnt/β-catenin signaling activation, thereby rectifying the aberrant proliferation and differentiation of intestinal stem cells (ISCs). In summary, our study demonstrates that Paeoniflorin can orchestrate mucosal healing and intestinal inflammation elimination through C1q-bridged macrophage-ISCs crosstalk, highlighting a novel strategy to treat chronic colitis by restoring mucosal homeostasis via targeting C1q.

Pharmacological Research published new progress about 112-63-0. 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

Guo, Jincheng; Wang, Cundong; Yu, Huabing; Li, Xia published the artcile< Preparation of a wear-resistant, superhydrophobic SiO2/silicone-modified polyurethane composite coating through a two-step spraying method>, Application In Synthesis of 112-63-0, the main research area is silica polyoxyalkylene polysiloxane polyurethane superhydrophobic waterproofing coating spray.

The preparation of superhydrophobic coatings has been extensively researched, but their practical applications are limited by complicated preparation processes and poor mech. durability. This study proposed a simple, low-cost method of preparing superhydrophobic coatings. A nano-silica dispersion was sprayed onto a semi-cured silicone-modified polyurethane resin through a two-step spraying method. Subsequently, these materials solidified together to successfully prepare a superhydrophobic coating with 159° contact angle and 2° sliding angle. The prepared silica/silicone-modified polyurethane (SiO2/SiPU) superhydrophobic coating showed superhydrophobic property after being cyclically rubbed for 30 cycles on 1000-mesh sandpaper under a load of 200 g. The coating further exhibited good corrosion resistance when placed in strong acid and alkali environments and excellent self-cleaning properties in air. This simple and environmentally friendly approach may have enormous application potential in many fields.

Progress in Organic Coatings published new progress about Abrasion-resistant coating materials. 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

He, Jian; Li, Hu; Xu, Yufei; Yang, Song published the artcile< Dual acidic mesoporous KIT silicates enable one-pot production of γ-valerolactone from biomass derivatives via cascade reactions>, Product Details of C19H34O2, the main research area is zirconium silica catalyst biomass derivative valerolactone one pot synthesis; morphol physicochem property.

γ-Valerolactone (GVL) is an interesting bio-based platform mol. that is utilized as green solvent and a versatile building block for the synthesis of bio-fuels and chems. Herein, an investigation on the efficient production of GVL from biomass-based carbonyl compounds such as furfural, levulinic acid, and its esters using 2-propanol as H-donor and solvent over stable Zr-incorporated mesoporous silica (KIT-5) catalysts was presented. Both Lewis and Bronsted acid sites were generated by the introduction of Zr into KIT-5, and the acid d. of the resulting Zr-KIT-5(Si/Zr) could be controlled by simply adjusting Si/Zr molar ratio. Among these bifunctional catalysts, Zr-KIT-5(10) showed superior catalytic performance in the production of GVL (>91% selectivity) from biomass-derived carboxides (ca. 94% conversion), which was demonstrated to pos. correlate with its large amount of acidic sites and facile access of active sites to interconnected pores. Moreover, the spent catalyst held about 90% of its original activity in the sixth run. Due to the presence of Bronsted and Lewis dual acidic sites in Zr-KIT-5, the direct conversion of furfural to GVL was also permitted in a single pot via tandem reactions involving hydrogenation, ring-opening, secondary hydrogenation, and subsequent cyclization.

Renewable Energy published new progress about Bronsted acidity. 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

Liang, Nan-Nan; Zhao, Ying; Guo, Yue-Yue; Zhang, Zhi-Hui; Gao, Lan; Yu, De-Xin; Xu, De-Xiang; Xu, Shen published the artcile< Mitochondria-derived reactive oxygen species are involved in renal cell ferroptosis during lipopolysaccharide-induced acute kidney injury>, Synthetic Route of 347174-05-4, the main research area is mitochondria reactive oxygen species ferroptosis lipopolysaccharide acute kidney injury; Acute kidney injury; Ferroptosis; Mitochondria-derived reactive oxygen species; Mitochondria-targeted antioxidants.

Our earlier studies indicated that reactive oxygen species (ROS) were involved in lipopolysaccharide (LPS)-induced acute kidney injury (AKI). The present study aimed to explore the role of mitochondria-derived ROS on renal cell ferroptosis during LPS-induced AKI. Male CD-1 mice were i.p. injected with LPS (2.0 mg/kg). Renal MDA and 4HNE residue, two markers of lipid peroxidation, were increased in LPS-exposed mice. Oxidized lipids were detected in LPS-treated human HK-2 cells. In vivo, ferroptosis-characteristic ultrastructure changes, including cell volume reduction, nuclear pyknosis and smaller mitochondria, were shown in renal cortex. In vitro, abnormal alteration of mitochondrial membrane potential was observed in LPS-treated human HK-2 cells. Ferrostatin-1, a specific inhibitor of ferroptosis, attenuated LPS-evoked renal lipid peroxidation, ferroptosis-characteristic mitochondrial damage and renal cell death. Mechanistically, mitochondria-derived ROS were elevated in LPS-stimulated HK-2 cells. MitoQ, a mitochondria-targeted antioxidant, almost completely scavenged LPS-stimulated mitochondrial ROS in human HK-2 cells. Moreover, pretreatment with MitoQ attenuated LPS-induced GSH depletion and lipid peroxidation in mouse kidney. Finally, pretreatment with MitoQ alleviated LPS-induced renal cell death and AKI. Taken together, these results suggest that mitochondria-derived ROS contribute, at least partially, to renal cell ferroptosis during LPS-induced AKI. Mitochondria-targeted antioxidants may be potential therapeutic agents for sepsis-induced AKI.

International Immunopharmacology published new progress about Acute kidney injury. 347174-05-4 belongs to class esters-buliding-blocks, and the molecular formula is C15H22N2O2, Synthetic Route of 347174-05-4.

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

Kunz, Roxanne K.; Rumfelt, Shannon; Chen, Ning; Zhang, Dawei; Tasker, Andrew S.; Buerli, Roland; Hungate, Randall; Yu, Violeta; Nguyen, Yen; Whittington, Douglas A.; Meagher, Kristin L.; Plant, Matthew; Tudor, Yanyan; Schrag, Michael; Xu, Yang; Ng, Gordon Y.; Hu, Essa published the artcile< Discovery of amido-benzisoxazoles as potent c-Kit inhibitors>, Category: esters-buliding-blocks, the main research area is benzisoxazole preparation cKit inhibitor SAR.

Deregulation of the receptor tyrosine kinase c-Kit is associated with an increasing number of human diseases, including certain cancers and mast cell diseases. Interference of c-Kit signaling with multi-kinase inhibitors has been shown clin. to successfully treat gastrointestinal stromal tumors and mastocytosis. Targeted therapy of c-Kit activity may provide therapeutic advantages against off-target effects for non-oncol. applications. A new structural class of c-Kit inhibitors is described, including in vitro c-Kit potency, kinase selectivity, and the observed binding mode.

Bioorganic & Medicinal Chemistry Letters published new progress about c-Kit proteins Role: BSU (Biological Study, Unclassified), BIOL (Biological 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