Month: October 2022

Basu Achari, Rimpa; Chakraborty, Santam; Goyal, Love; Saha, Saheli; Roy, Paromita; Zameer, Lateef; Mishra, Deepak; Parihar, Mayur; Das, Anirban; Chandra, Aditi; Biswas, Bivas; Mallick, Indranil; Arunsingh, Moses A; Chatterjee, Sanjoy; Bhattacharyya, Tapesh published the artcile< Evaluating Quality Indicators of Glioblastoma Care: Audit Results From an Indian Tertiary Care Cancer Center.>, Category: esters-buliding-blocks, the main research area is .

PURPOSE: There are limited reports of quality metrics in glioblastoma. We audited our adherence to quality indicators as proposed in the PRIME Quality Improvement study. METHODS: This is a retrospective audit of patients treated between 2017 and 2020. After postsurgical integrated diagnosis, patients received radiotherapy (RT) with concurrent and adjuvant temozolomide (TMZ). Multiparametric magnetic resonance imaging at predefined times guided management. Numbers with proportions for indices were calculated. Survival was estimated using the Kaplan-Meier method. RESULTS: One hundred six patients were consecutively treated. The median age was 55 years (interquartile range of 47-61 years) with a male preponderance (68%). Ninety-six (90.6%) patients underwent subtotal resection, and 10 (9.4%) biopsy alone. Isocitrate dehydrogenase was wild-type in 96 (91%), and O6-methylguanine-DNA methyltransferase was unmethylated in 70 (66.0%) patients. Telomerase reverse transcriptase promoter was mutated in 64 (60.4%), and TP53 was mutated in 22 (20.8%). Concurrent radiation and TMZ were planned for 104 (98.1%), and radiation alone for 2 (1.9%). The median time to concurrent RT-TMZ was 36 days (interquartile range 30-44 days). All patients planned for RT-TMZ completed treatment, but only 81 (76%) completed adjuvant TMZ. Sixty-three (59%) completed six cycles, 18 (17%) received less than six cycles, and 25 (24%) did not receive adjuvant TMZ. At a median follow-up of 24 months (range 21-31 months), the median (95% CI) progression-free survival and overall survival were 11 (95% CI, 9.4 to 13.0) and 20.0 (95% CI, 15 to 26) months, respectively. CONCLUSION: Our patients met quality indices in most domains; outcomes are comparable with global results. Metrics will be periodically evaluated to include new standards and assess continuous service appropriateness.

JCO global oncology published new progress about 112-63-0. 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

Li, Ke; Gao, Fanrong; Li, Zhenyu; Qin, Xuemei; Sun, Haifeng; Xing, Jie; Zhang, Lizeng; Du, Guanhua published the artcile< Potential quality evaluation method for radix astragali based on sweetness indicators>, Formula: C19H34O2, the main research area is radix astragali sweetness astragaloside IV calycosin glucoside polysaccharide Astragalus.

Sweetness is a traditional sensory indicator used to evaluate the quality of the popular Chinese herb Radix Astragali (RA). RA roots with strong sweetness are considered to be of good quality. However, neither a thorough anal. of the component(s) contributing to RA sweetness, nor a scientific investigation of the reliability of this indicator has been conducted to date. In this study, seven kinds of sweetness components were identified in RA and a quality evaluation method based on these components was established and used to characterize the quality of 48 RA samples. The sweetness evaluation method of RA was first built based on the sweetness components, and a comprehensive evaluation index commonly used in quality control of RA was also derived, which was based on the contents of four indicators (astragaloside IV, calycosin glucoside, polysaccharides and extracts). After evaluating the correlation of these indexes the results showed that the level of sweetness exhibited a strong pos. correlation with the proposed comprehensive index. Our results indicate that sweetness is one of the most important quality attributes of RA and thus provide a scientific basis for the utility of the sweetness indicator in quality assessment of this Chinese herb.

Molecules published new progress about Astragalus membranaceus. 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

Illig, Carl R.; Manthey, Carl L.; Meegalla, Sanath K.; Wall, Mark J.; Chen, Jinsheng; Wilson, Kenneth J.; DesJarlais, Renee L.; Ballentine, Shelley K.; Schubert, Carsten; Crysler, Carl S.; Chen, Yanmin; Molloy, Christopher J.; Chaikin, Margery A.; Donatelli, Robert R.; Yurkow, Edward; Zhou, Zhao; Player, Mark R.; Tomczuk, Bruce E. published the artcile< Enhancement of kinase selectivity in a potent class of arylamide FMS inhibitors>, Application of C19H34O2, the main research area is arylamide preparation FMS kinase inhibitor; Anti-inflammatory; Colony-stimulating factor-1 receptor; FMS; Hypocellularity; KIT; Macrophage colony-stimulating factor; Rheumatoid arthritis.

Structure-activity relationship (SAR) studies on a highly potent series of arylamide FMS inhibitors were carried out with the aim of improving FMS kinase selectivity, particularly over KIT. Potent compound I [R = 4-(HOCH2CH2)piperazin-1-yl] (FMS IC50 0.7 nM, FMS cell IC50 6.1 nM) was discovered that had good PK properties and a greater than fivefold improvement in selectivity for FMS over KIT kinase in a cellular assay relative to the previously reported clin. candidate 4. This improved selectivity was manifested in vivo by no observed decrease in circulating reticulocytes, a measure of bone safety, at the highest studied dose. Compound I [R = 4-(HOCH2CH2)piperazin-1-yl] was highly active in a mouse pharmacodynamic model and demonstrated disease-modifying effects in a dose-dependent manner in a strep cell wall-induced arthritis model of rheumatoid arthritis in rats.

Bioorganic & Medicinal Chemistry Letters published new progress about Antirheumatic 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

Yu, Yawen; Wang, Aiping; Wang, Siqi; Sun, Yuchen; Chu, Liuxiang; Zhou, Lin; Yang, Xiaoyue; Liu, Xincui; Sha, Chunjie; Sun, Kaoxiang; Xu, Lixiao published the artcile< Efficacy of Temozolomide-Conjugated Gold Nanoparticle Photothermal Therapy of Drug-Resistant Glioblastoma and Its Mechanism Study>, Application of C19H34O2, the main research area is drug resistance; glioblastoma; gold nanoparticles; photothermal therapy; temozolomide.

Temozolomide (TMZ) is a standard-of-care chemotherapeutic drug for the treatment of glioblastoma (GBM), but TMZ-acquired resistance limits its therapeutic effect. In this study, TMZ-loaded gold nanoparticles (TMZ@GNPs) with anti-EphA3 modification on the surface (anti-EphA3-TMZ@GNPs) were synthesized for chem. and auxiliary plasma photothermal treatment (GNPs-PPTT), aiming to overcome the problem of glioma resistance to TMZ and improve the therapeutic effects of GBM. The prepared anti-EphA3-TMZ@GNPs were spherical with a particle size of 45.88 ± 1.9 nm, and the drug loading was 7.31 ± 0.38%. In vitro, cell-culture-based experiments showed that anti-EphA3 increased the cellular uptake of GNPs in T98G cells. Upon laser irradiation, the cytotoxicity and apoptosis rate in the anti-EphA3-TMZ@GNPs-treated group were significantly higher than those in the GNPs and nonphotothermal groups (p < 0.001). The Western blot anal. showed that the GNPs-PPTT-mediated killing of tumor cells induced apoptosis by regulating the apoptotic signaling mols. and cell cycle inhibitors; the expression of MGMT significantly decreased upon p53 induction, thereby reversing drug resistance. After photothermal treatment, the survival time of the s.c. GBM model of nude mice in the anti-EphA3-TMZ@GNPs group was prolonged to 46 days, 1.64-fold longer as compared to that in the TMZ group. Based on H&E and TUNEL staining, GNPs-PPTT could elevate apoptosis in T98G cells. In vivo thermal imaging results showed that GNPs could enter the brain via intranasal administration and be eliminated in 2 days, indicating that GNPs are safe for brain. In conclusion, GNPs-PPTT could effectively induce apoptosis in glioma cells and reverse TMZ resistance, thereby, indicative of a promising treatment strategy for GBM. Molecular Pharmaceutics published new progress about 112-63-0. 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

Khan, Raihana Imran; Pitchumani, Kasi published the artcile< A pyridinium modified β-cyclodextrin: an ionic supramolecular ligand for palladium acetate in C-C coupling reactions in water>, Electric Literature of 112-63-0, the main research area is bromobenzene phenylboronic acid pyridinium cyclodextrin catalyst Suzuki coupling; biaryl preparation green chem; styrene aryl halide pyridinium cyclodextrin catalyst Heck coupling; aryl alkene preparation green chem.

An ionic Pd(II) complex stabilized by a water soluble pyridinium modified β-cyclodextrin was prepared and characterized by NMR, mass spectrometry, FT-IR spectroscopy, UV-visible spectroscopy and DLS (dynamic light scattering). The resulting Pd(II)@Pyr:β-CD complex showed very good catalytic activity in Suzuki-Miyaura and Heck C-C coupling reactions in an environmentally benign water medium. Good to excellent yields were obtained for the coupling of various aryl halides including chlorides with phenylboronic acid/styrene using a catalytic amount of Pd(II)@Pyr:β-CD. This homogeneous catalyst can be reused and recycled more than six times with only marginal loss of its catalytic activity.

Green Chemistry published new progress about Binding energy. 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

Kisel, V. M.; Kovtunenko, V. A.; Turov, A. V.; Tyltin, A. K.; Babichev, F. S. published the artcile< Synthesis and properties of new dibenz[b,f]azocine functional derivatives>, Computed Properties of 112-63-0, the main research area is Thorpe reaction oxycyanodibenzazocine dibromoacetophenone; acetophenone dibromo Thorpe reaction oxycyanodibenzazocine; intramol cyclocondensation acylcyanomethylbenzylanthranilate; anthranilate acylcyanomethylbenzyl intramol cyclocondensation; dibenzazocine oxycyano Thorpe reaction dibromoacetophenone; azocine oxycyanodibenz Thorpe reaction dibromoacetophenone; furoazocine dibenz.

The intramol. cyclocondensation of o-NCCH2C6H4CH2N(COR)C6H4CO2Et-o (R = CH3, CF3) gives the title compounds I. The hydroxyl group of I is involved in a transannular hydrogen bond. The tautomerism of I was also studied. Alkylation of I (R = CH3) is accompanied by the Thorpe reaction to give dibenzofuroazocine II.

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, Computed Properties of 112-63-0.

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

Morikawa, Kouhei; Sharpless, K. Barry published the artcile< Double diastereoselection in asymmetric dihydroxylation>, Category: esters-buliding-blocks, the main research area is double diastereoselection asym dihydroxylation ligand; chiral olefin asym dihydroxylation ligand; phthalazine ligand asym dihydroxylation; pyrimidine ligand asym dihydroxylation.

New phthalazine and pyrimidine ligands give improved double diastereoselection in asym. dihydroxylation of chiral olefin I.

Tetrahedron Letters published new progress about Dihydroxylation catalysts, stereoselective. 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

Lin, Che-Hung; Wang, Yu-Jen; Lee, Chin-Fa published the artcile< Efficient Copper-Catalyzed Cross-Coupling Reaction of Alkynes with Aryl Iodides>, SDS of cas: 112-63-0, the main research area is aryl alkyne preparation; alkyne aryl iodide cross coupling copper dimethylbisdiphenylphosphinoxanthene catalyst.

A copper-catalyzed cross-coupling reaction of alkynes with aryl iodides is described. The system tolerates a broad range of functional groups and enables the use of sterically demanding substrates with only 1.0-2.5 mol-% of Cu2O and 1.0-2.5 mol-% of xantphos as the catalyst.

European Journal of Organic Chemistry published new progress about Alkynes Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.

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

Pommier, Agnes; Pons, Jean-Marc; Kocienski, Philip J. published the artcile< The First Total Synthesis of (-)-Lipstatin>, Electric Literature of 617-55-0, the main research area is asym synthesis lipstatin; stereoselective cycloaddition silylketene tetradecadienal.

A key step in the first total synthesis of the potent pancreatic lipase inhibitor (-)-lipstatin (I) is a diastereoselective Lewis acid-promoted [2 + 2] cycloaddition reaction between (trimethylsilyl)ketene Me(CH2)5C(SiMe3):CO and tetradecadienal II (TBS = Me3CSiMe2), which is prepared from di-Me (S)-(-)-malate.

Journal of Organic Chemistry published new progress about [2+2] Cycloaddition reaction. 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Electric Literature of 617-55-0.

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

Liao, Tingting; Xu, Xia; Ye, Xu; Yan, Jianying published the artcile< DJ-1 upregulates the Nrf2/GPX4 signal pathway to inhibit trophoblast ferroptosis in the pathogenesis of preeclampsia>, Product Details of C15H22N2O2, the main research area is DJ1 Nrf2 GPX4 signal trophoblast ferroptosis preeclampsia.

Ferroptosis is a newly discovered mode of cell death that involves disorders in iron metabolism and the accumulation of reactive oxygen species (ROS) in the plasma membrane. Preeclampsia (PE) is a gestational idiopathic disease that is characterized by hypertension and albuminuria, begins after 20 wk of pregnancy. DJ-1 is a prerequisite for activating and stabilizing Nrf2 to allow translocation to the nucleus to carry out further functions. Detecting the expression levels of DJ-1, the Nrf2/GPX4 signaling pathway and ferroptosis markers in placental tissues of pregnant women with and without PE. Analyzing the effects of the ferroptosis inducer (RSL3) and the inhibitor (Fer-1) on the mortality rate of BeWo cells and DJ-1+/+, DJ-1-/- BeWo cells. Ferroptosis markers (MDA concentration and morphol. of trophoblast cells) and DJ-1 and its downstream the Nrf2/GPX4 signaling pathway increased significantly in PE pathol. state. The expression levels of DJ-1 protein in the control group and the PE group were pos. correlated with the expression levels of Nrf2/GPX4 signaling pathway protein, and neg. correlated with the MDA concentration BeWo cells were sensitive to the ferroptosis inducer (RSL3) and the inhibitor (Fer-1). The high expression levels of DJ-1 in BeWo cells can resist ferroptosis by regulating the Nrf2/GPX4 signaling pathway. Ferroptosis is involved in the pathogenesis of PE. DJ-1 can mediate the trophoblast cells ferroptosis and play a protective role in the pathogenesis of preeclampsia by regulating the Nrf2/GPX4 signaling pathway.

Scientific Reports published new progress about Ferroptosis. 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