Category: 112-63-0

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

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

Sankpal, Mrunali Mohan published the artcile< Determination of phytoconstituents in Annona reticulata Linn. Methanolic leaf extract using GCMS>, Quality Control of 112-63-0, the main research area is phytoconstituent Methanolic leaf extract Annona reticulata.

The present investigation was carried out for the qual. screening of major phytochem. groups and to identify specific bioactive compounds present in the methanolic leaf extracts of Annona reticulata Linn. The qual. screening of phytochem. groups was done using the standard procedures described in Exptl. Phytopharmacognosy and the identification of bioactive compounds by using GC-MS anal. The qual. phytochem. screening revealed the presence of phenolics, flavonoids, alkaloids, tannins, glycosides, terpenoids and carbohydrates. The GC-MS anal. identified 33 phytocompounds of which most of them were reported to have important biol. activities. The study confirmed the medicinal property of Annona reticulata Linn. and suggest that further research works are to be carried out for the utilization of the active principles for future drug developments.

World Journal of Pharmaceutical Research published new progress about Alkaloids Role: ANT (Analyte), PAC (Pharmacological Activity), THU (Therapeutic Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 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

Massey, Richard S.; Murray, Jacob; Collett, Christopher J.; Zhu, Jiayun; Smith, Andrew D.; O’Donoghue, AnnMarie C. published the artcile< Kinetic and structure-activity studies of the triazolium ion-catalysed benzoin condensation>, Category: esters-buliding-blocks, the main research area is benzaldehyde triazolium catalyst preparation benzoin condensation reaction kinetics.

Steady-state kinetic and structure-activity studies of a series of six triazolium-ion pre-catalysts 2a-2f were investigated for the benzoin condensation. These data provide quant. insight into the role of triazolium N-aryl substitution under synthetically relevant catalytic conditions in a polar solvent environment. Kinetic behavior was significantly different to that previously reported for a related thiazolium-ion pre-catalyst 1, with the observed leveling of initial rate constants to νmax at high aldehyde concentrations for all triazolium catalysts. Values for νmax for 2a-2f increase with electron withdrawing N-aryl substituents, in agreement with reported optimal synthetic outcomes under catalytic conditions, and vary by 75-fold across the series. The leveling of rate constants supports a change in rate-limiting step and evidence supports the assignment of the Breslow-intermediate forming step to the plateau region. Correlation of νmax reaction data yielded a pos. Hammett ρ-value (ρ = +1.66) supporting the build up of electron d. adjacent to the triazolium N-Ar in the rate-limiting step favored by electron withdrawing N-aryl substituents. At lower concentrations of aldehyde, both Breslow-intermediate and benzoin formation are partially rate-limiting.

Organic & Biomolecular Chemistry published new progress about Benzoin condensation reaction. 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

Perlow, Haley K.; Yaney, Alexander; Yang, Michael; Klamer, Brett; Matsui, Jennifer; Raval, Raju R.; Blakaj, Dukagjin M.; Arnett, Andrea; Beyer, Sasha; Elder, James B.; Ammirati, Mario; Lonser, Russell; Hardesty, Douglas; Ong, Shirley; Giglio, Pierre; Pillainayagam, Clement; Goranovich, Justin; Grecula, John; Chakravarti, Arnab; Gondi, Vinai; Brown, Paul D.; Palmer, Joshua D. published the artcile< Dose-escalated accelerated hypofractionation for elderly or frail patients with a newly diagnosed glioblastoma>, Application of C19H34O2, the main research area is glioblastoma cancer diagnosis hypofractionation temozolomide MGMT methylation drug toxicity; Elderly; Frail; Glioblastoma; Hypofractionation; Radiation.

The standard of care for elderly glioblastoma patients is 40 Gy in 15 fraction radiotherapy with temozolomide (TMZ). However, this regimen has a lower biol. equivalent dose (BED) compared to the Stupp regimen of 60 Gy in 30 fractions. We hypothesize that accelerated hypofractionated radiation of 52.5 Gy in 15 fractions (BED equivalent to Stupp) will have superior survival compared to 40 Gy in 15 fractions. Elderly patients (≥ 65 years old) who received hypofractionated radiation with TMZ from 2010 to 2020 were included in this anal. Overall survival (OS) and progression free survival were defined as the time elapsed between surgery/biopsy and death from any cause or progression. Baseline characteristics were compared between patients who received 40 and 52.5 Gy. Univariable and multivariable analyses were performed. Sixty-six newly diagnosed patients were eligible for anal. Thirty-nine patients were treated with 40 Gy in 15 fractions while twenty-seven were treated with 52.5 Gy in 15 fractions. Patients had no significant differences in age, sex, methylation status, or performance status. OS was superior in the 52.5 Gy group (14.1 mo) when compared to the 40 Gy group (7.9 mo, p = 0.011). Isoeffective dosing to 52.5 Gy was shown to be an independent prognostic factor for improved OS on multivariable anal. Isoeffective dosing to 52.5 Gy in 15 fractions was associated with superior OS compared to standard of care 40 Gy in 15 fractions. These hypothesis generating data support accelerated hypofractionation in future prospective trials.

Journal of Neuro-Oncology published new progress about Alopecia. 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

Zhou, Yuan; Chen, Li; Ding, Deping; Li, Ziheng; Cheng, Li; You, Qiuyun; Zhang, Shunbo published the artcile< Cyanidin-3-O-glucoside inhibits the β-catenin/MGMT pathway by upregulating miR-214-5p to reverse chemotherapy resistance in glioma cells>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is cyanidin 3 glucoside anticancer agent mRNA glioma.

Overcoming resistance to alkylating agents has important clin. significance in glioma. Cyanidin-3-O-glucoside (C3G) has a tumor-suppressive effect on tumor cells. However, whether it plays a role in temozolomide resistance in glioma is still unclear. We constructed a TMZ-resistant LN-18/TR glioma cell line, observed the effect of C3G on TMZ resistance in this cell line, and explored the role of miR-214-5p in chemoresistance. Results showed that β-catenin and MGMT were significantly upregulated in LN-18/TR cells. C3G upregulated miR-214-5p and enhanced the cytotoxic effect of temozolomide on LN-18/TR cells. Contrarily, C3G downregulated β-catenin and MGMT. Moreover, the miR-214-5p mimic downregulated β-catenin and MGMT in LN-18/TR cells, whereas the miR-214-5p inhibitor had the opposite effect; the miR-214-5p inhibitor significantly blocked the C3G-induced downregulation of β-catenin and MGMT. C3G or the miR-214-5p mimic enhanced temozolomide-induced apoptosis in LN-18/TR cells, whereas the miR-214-5p inhibitor blocked this effect. Furthermore, C3G or miR-214-5p agomir combined with TMZ significantly inhibited the growth of LN-18/TR tumors. Collectively, our research discovered the potential signaling mechanism associated with C3G-mediated suppression of TMZ resistance in LN-18/TR cells through miR-214-5p, which can facilitate the treatment of MGMT-induced resistance in glioma cells.

Scientific Reports published new progress about Animal gene Role: BSU (Biological Study, Unclassified), PRP (Properties), BIOL (Biological Study) (CTNNB1). 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