Tag: M.W=250-300

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

Frymark, Justyna; Zabiszak, Michal; Grajewski, Jakub; Hnatejko, Zbigniew; Kolodynska, Dorota; Kaczmarek, Malgorzata T.; Jastrzab, Renata published the artcile< Excess of polyamine as a factor influencing the mode of coordination in the Eu(III)/α-hydroxy acid/spermine system>, Synthetic Route of 112-63-0, the main research area is europium complexation hydroxy acid spermine excess polyamine spectroscopy.

The complexes of europium(III) ions in binary and ternary systems with α-hydroxy acids and biogenic amine – spermine were investigated. Studies have been performed in aqueous solution using the potentiometric method with computer anal. of the data. Anal. of the equilibrium constants of the reactions and spectroscopic data have allowed us to determine the type of coordination and effectiveness of the carboxyl groups in the process of complex formation in the systems studied. Furthermore, the results confirmed the occurrence of non-covalent interactions of protonated spermine with coordinated α-hydroxy acid. The effect of biogenic polyamine concentration was clearly confirmed, and their influence on the stability and coordination mode of ternary complexes was found.

Polyhedron published new progress about Circular dichroism. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

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

Gao, Song; Ren, Fang-Yu; Xie, Wei-Hang; He, Liang-Nian; Li, Hong-Ru published the artcile< Heterogeneous esterification of ricinoleic acid with polyol for the synthesis of polyol ricinoleates as biomass-based lubricant base oil>, Related Products of 112-63-0, the main research area is ricinoleic acid polyol ricinoleats biomass lubricant base oil esterification.

Bio-derived lubricants, especially those derived from vegetable oils, are considered to be promising alternatives to mineral oil-based lubricants due to the features of sustainability and environmental friendliness. In this work, the polyol ricinoleates were prepared by esterification of ricinoleic acid with trimethylolpropane (TMP), neopentyl glycol (NPG) and pentaerythritol (PE) resp. using Lewis acidic stannous oxide as an efficient heterogeneous catalyst, affording the polyol ricinoleates up to 99.7% yield. Remarkably, the solid catalyst was readily recovered and reused at least for five cycles without significant loss of activity. The resulting polyol ricinoleates products were structurally characterized by Fourier transform IR spectroscopy (FT-IR), 1H NMR, 13C NMR, electrospray ionization mass spectra (ESI-MS); and were stable below 300°C through thermogravimetric anal. (TGA). Furthermore, the physicochem. and lubricating properties of as-synthesized polyol esters were also evaluated including viscosity at 40 and 100°C, viscosity index (VI), pour point and flash point, thermal stability and wear scar diameter To our delight, the performance indicators of the target products were comparable or better than the com. lubricants, showing their potential as lubricant base oil. This work represents an alternative access to useful lubricant products via effective and selective conversion of non-edible vegetable oil.

Journal of the American Oil Chemists’ Society published new progress about Base oils. 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

Majumdar, Krishna C.; Kundu, Anup K. published the artcile< Pyridine hydrobromide perbromide mediated regioselective heterocyclization of ortho-cyclohexenyl phenols>, Computed Properties of 112-63-0, the main research area is pyridine hydrobromide perbromide cyclization cyclohexenylphenol preparation.

A series of 2,6-methano-1-benzoxecin derivatives was prepared in almost quant. yields by regioselective heterocyclization of 2-(2-cyclohexen-1-yl)phenols. The structures of one of the 2,5-methano-1-benzoxecins thus prepared was determined by the synthesis of a mercury compound from the intermediate 2-(2-cyclohexen-1-yl)-4-methoxyphenol. The cyclization of 2-chloro-6-(2-cyclohexen-1-yl)phenol failed and yielded a ring-brominated product instead.

Canadian Journal of Chemistry published new progress about Cyclization, regioselective. 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

Xu, Yang; Yang, Huailei; Shan, Baiyu; Fang, Kuo; Li, Mingyu; Wang, Fang; Bao, Huiwei published the artcile< Simultaneous Determination of Seven Active Components in Desheng Pills by High-performance Liquid Chromatography>, Application In Synthesis of 112-63-0, the main research area is Desheng pill paeoniflorin costunolide high performance liquid chromatog.

Desheng pills (DSP) consist of six traditional Chinese medicine. This preparation is used fornourishing blood, eliminating stasis, soothing liver and regulating menstruation, and can also be used to treat menoxenia and dysmenorrhea caus ed by qi stagnation and blood stasis. Objective: In this paper, an accurate and sensitive high-performance liquid chromatog.-diode array detector (HPLC-DAD) method was developed and validated for simultaneous determination of seven active components (gallic acid, paeoniflorin, costunolide, dehydrocostuslactone, rutin, leonurine hydrochloride and ferulic acid) in the traditional Chinese formula-Desheng pills. The seven analytes were separated on Agilent ZORBAX SB-C18 column (250mmx 4.6mm, 5μm) maintained at the temperature of 30. Gradient elution was performed with the mobile phase of methanol (A)-0.1% phosphoric acid solution (B) at the flow rate of 1.0mL·min-1. The anal. was carried out at the wavelength of 225 nm, 256 nm, 277 nm and 320 nm with an injection volume of 10μL. The measured seven components showed good linear relationships within their own concentration ranges along with coefficients of determination ≥0.9996. The limits of detection and quantitation of all analytes were in the range of 0.19-13.51μg/mL and 0.59-40.93μg/mL, resp. Average recoveries ranged from 98.82% to 102.01% with RSDs of 1.47%-1.99%. The content of tested components was in the range of 0.053-0.421 mg/g. Conclusion: The proposed method was found to be sensitive, accurate and reproducible, which provided an effective quant. anal. method for quality control of Desheng pills.

Current Pharmaceutical Analysis published new progress about Chinese medicine (Desheng pill). 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

Park, Deborah Y.; Tom, Martin C.; Chen, Yanwen; Tewari, Surabhi; Ahluwalia, Manmeet S.; Yu, Jennifer S.; Chao, Samuel T.; Suh, John H.; Peereboom, David M.; Stevens, Glen H. J.; Barnett, Gene H.; Angelov, Lilyana; Mohammadi, Alireza; Hogan, Thomas; Kissel, Courtney; Lapin, Brittany; Schuermeyer, Isabel; Parsons, Michael W.; Naugle, Richard; Murphy, Erin S. published the artcile< Cognitive function after concurrent temozolomide-based chemoradiation therapy in low-grade gliomas>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is cognitive function low grade glioma temozolomide chemoradiation therapy; Chemoradiation; Cognitive function; Low grade glioma; Neurocognitive testing; Temozolomide.

We sought to evaluate the effects of concurrent temozolomide-based chemoradiation therapy on neurocognitive function in patients with low-grade glioma (LGG). We included adult patients with LGG who were treated postoperatively with radiotherapy (RT) with concurrent and adjuvant temozolomide (TMZ). Patients were evaluated with comprehensive psychometric tests at baseline (prior to RT + TMZ) and at various time intervals following RT + TMZ. Baseline cognitive performance was analyzed by sex, age, education history, history of seizures, IDH mutation status, and 1p/19q codeletion status. Changes in neurocognitive performance were evaluated over time. Thirty-seven LGG patients (mean age 43.6, 59.5% male) had baseline neurocognitive evaluation. Patients with an age > 40 years old at diagnosis and those with an education > 16 years demonstrated superior baseline verbal memory as assessed by HVLT. No other cognitive domains showed differences when stratified by the variables mentioned above. A total of 22 LGG patients had baseline and post RT + TMZ neurocognitive evaluation. Overall, patients showed no statistical difference between group mean test scores prior to and following RT + TMZ on all psychometric measures (with the exception of HVLT Discrimination). Cognitive function remained stable following RT + TMZ in LGG patients evaluated prospectively up to 2 years. The anticipated anal. of RTOG 0424 will provide valuable neurocognitive outcomes specifically for high risk LGG patients treated with RT + TMZ.

Journal of Neuro-Oncology published new progress about Cancer diagnosis. 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

Newar, Rajashree; Begum, Wahida; Akhtar, Naved; Antil, Neha; Chauhan, Manav; Kumar, Ajay; Gupta, Poorvi; Malik, Jaideep; Balendra; Manna, Kuntal published the artcile< Mono-Phosphine Metal-Organic Framework-Supported Cobalt Catalyst for Efficient Borylation Reactions>, Product Details of C19H34O2, the main research area is borylation aromatic compound cobalt metal organic framework catalyst; hydroboration alkene styrene cobalt metal organic framework catalyst; crystal structure phenylphosphine cobalt chloride; mol structure phenylphosphine cobalt chloride; aryl alkyl boronic acid ester preparation.

The authors report a metal-organic framework (MOF) supported monoligated phosphine-Co complex, which is an active heterogeneous catalyst for aromatic C-H borylation and alkene hydroboration. The mono(phosphine)-Co catalyst (MOF-P-Co) was prepared by metalation of a porous triarylphosphine-functionalized MOF (MOF-P) with CoCl2 followed by activation with NaEt3BH. The MOF catalyst has a broad substrate scope with excellent functional group tolerance to afford arene- and alkyl-boronate esters in excellent yields and selectivity. MOF-P-Co gave a turnover number (TON) of 30,000 and could be recycled and reused at least 13 times in arene C-H borylation. Importantly, the attempt to prepare the homogeneous control (Ph3P-Co) using PPh3 was unsuccessful due to the facile disproportionation reactions or intermol. ligand exchanges in the solution In contrast, the site isolation of the active mono(phosphine)-Co species within the MOF affords the robust and coordinatively unsaturated metal complexes, allowing to explore their catalytic properties and the reaction mechanism.

European Journal of Inorganic Chemistry 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, Product Details of C19H34O2.

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