Month: October 2022

Charaschanya, Manwika; Maskrey, Taber S.; LaPorte, Matthew G.; Janjic, Jelena M.; Wipf, Peter published the artcile< Synthesis and optimization of nitroxide-based inhibitors of ferroptotic cell death in cancer cells and macrophages>, Computed Properties of 347174-05-4, the main research area is alkene peptide isostere synthesis nitroxide inhibitor ferroptotic cell death; peptide alkene enantioselective diastereoselective synthesis antitumor structure activity ferroptosis; vinylogous Mannich reaction cross metathesis drug desigh luminescence.

JP4-039 Is an alkene peptide isostere that acts as a low-micromolar inhibitor of erastin- and RSL-3-induced ferroptotic cell death in the HT-1080 cell line. In this work, we have developed new synthetic strategies that allow access to analogs of this lead structure. Enantioselective vinylogous Mannich or cross-metathesis reactions were key to the preparation of a series of analogs that culminated in the preparation of the ca. 30-fold more potent analog (I) (BOC = tert-butoxycarbonyl). Structure-activity relationship analyses used both HT-1080 cells and a luminescence-based ferroptosis assay in RAW 264.7 macrophages. In particular, α,α-disubstituted alkene peptide isosteres (Rα ≠ H) were found to exceed the potency of the corresponding glycine (Rα = H) derivatives

ACS Medicinal Chemistry Letters published new progress about Alkenes Role: PAC (Pharmacological Activity), RCT (Reactant), SPN (Synthetic Preparation), THU (Therapeutic Use), BIOL (Biological Study), RACT (Reactant or Reagent), PREP (Preparation), USES (Uses) (peptides). 347174-05-4 belongs to class esters-buliding-blocks, and the molecular formula is C15H22N2O2, Computed Properties of 347174-05-4.

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

Dolan, Niamh; Gavin, Declan P.; Eshwika, Ahmed; Kavanagh, Kevin; McGinley, John; Stephens, John C. published the artcile< Synthesis, antibacterial and anti-MRSA activity, in vivo toxicity and a structure-activity relationship study of a quinoline thiourea>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is quinoline thiourea preparation antibacterial structure activity; Antibacterial; MRSA; Quinoline; Structure activity relationship; Thiourea.

We report the synthesis and antibacterial evaluation of a series of thiourea-containing compounds 1-[3,5-Bis(trifluoromethyl)phenyl]-[(quinuclidin-2-yl)methyl]thiourea I, was the most active against a range of Gram-pos. and Gram-neg. bacteria, and exhibited bacteriostatic activity against methicillin resistant Staphylococcus aureus (MRSA) comparable to that of the well-known antibacterial agent vancomycin. Quinoline thiourea I was subjected to a detailed structure-activity relationship study, with I and its derivatives evaluated for their bacteriostatic activity against both Gram-neg. and Gram-pos. bacteria. A number of structural features important for the overall activity of quinoline thiourea I have been identified. A selection of compounds, including I, was also evaluated for their in vivo toxicity using the larvae of the Greater wax moth, Galleria mellonella. Compound I, and a number of derivatives, were found to be non-toxic to the larvae of Galleria mellonella. A new class of antibiotic can result from the further development of this family of compounds

Bioorganic & Medicinal Chemistry Letters published new progress about Antibacterial agents. 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

Giron-Callejas, Amalia; Garcia-Morales, Claudia; Mendizabal-Burastero, Ricardo; Meza, Rita I.; Sierra, Tomasa; Tapia-Trejo, Daniela; Perez-Garcia, Marissa; Quiroz-Morales, Veronica S.; Paredes, Mayte; Rodriguez, Alizon; Juarez, Sandra I.; Farach, Nasim; Videa, Geraldina; Lara, Bredy; Rodriguez, Edith; Ardon, Elvia; Sajquim, Edgar; Lorenzana, Rolando; Ravasi, Giovanni; Northbrook, Sanny; Reyes-Teran, Gustavo; Avila-Rios, Santiago published the artcile< High level of pre-treatment and acquired HIV drug resistance in Honduras: a nationally representative survey, 2016-17>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is nigh level pretreatment acquired HIV drug resistance.

Background: Pre-treatment HIV drug resistance (HIVDR) to NNRTIs has consistently increased in low-/middle-income countries during the last decade. Objectives: To estimate the prevalence of pre-treatment HIVDR and acquired HIVDR among persons living with HIV (PLHIV) on ART for 12 ± 3 mo (ADR12) and ≥48 mo (ADR48) in Honduras. Patients and methods: A nationwide cross-sectional survey with a two-stage cluster sampling was conducted from Oct. 2016 to Nov. 2017. Twenty-two of 54 total ART clinics representing >90% of the national cohort of adults on ART were included. HIVDR was assessed for protease and reverse transcriptase Sanger sequences using the Stanford HIVdb tool. Results: A total of 729 PLHIV were enrolled; 26.3% (95% CI 20.1%-33.5%) ART initiators reported prior exposure to antiretrovirals. Pre-treatment HIVDR prevalence was 26.9% (95% CI 20.2%-34.9%) to any antiretroviral and 25.9% (19.2%-33.9%) to NNRTIs. NNRTI pre-treatment HIVDR was higher in ART initiators with prior exposure to antiretrovirals (P = 0.001). Viral load (VL) suppression rate was 89.7% (85.1%-93.0%) in ADR12 and 67.9% (61.7%-73.6%) in ADR48. ADR12 to any drug among PLHIV with VL ≥1000 copies/mL was 86.1% (48.9%-97.6%); 67.1% (37.4%-87.5%) had HIVDR to both NNRTIs and NRTIs, and 3.8% (0.5%-25.2%) to PIs. ADR48 was 92.0% (86.8%-95.3%) to any drug; 78.1% (66.6%-86.5%) to both NNRTIs and NRTIs, and 7.3% (1.8%-25.1%) to PIs. Conclusions: The high prevalence of NNRTI pre-treatment HIVDR observed in Honduras warrants consideration of non-NNRTI-based first-line regimens for ART initiation. Programmatic improvements in HIVDR monitoring and adherence support may also be considered.

Journal of Antimicrobial Chemotherapy published new progress about Anti-HIV agents (anti-HIV-1 agents, anti-hiv-1 drugs). 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

Qian, Kun; Seifert, Soenke; Winans, Randall E.; Li, Tao published the artcile< Understanding Solvation Behavior of the Saturated Electrolytes with Small/Wide-Angle X-ray Scattering and Raman Spectroscopy>, Related Products of 112-63-0, the main research area is solvation behavior saturated electrolytes small wide angle XRS Raman.

Concentrated electrolytes are attracting significant attention because the solvation structures could stabilize the interface, encouraging novel electrolyte development for high-voltage and long-cycle-life batteries. Saturated electrolytes, which have the highest salt concentrations, have been rarely studied because of their shortcomings of high viscosity and low ionic conductivity Nevertheless, the exciting solvation structure in saturated solution is still worth studying, significantly broadening the comprehensive understanding of the solvation processes. In this work, we investigate the saturated lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) dissolved in seven different organic solvents, including propylene carbonate (PC), THF, acetonitrile (ACN), DMF, 1,2-dimethoxyethane (DME), diethylene glycol di-Me ether (Diglyme), and tetraethylene glycol di-Me ether (Tetraglyme). The combined small/wide-angle X-ray scattering and Raman spectroscopy are employed to study the global and local solvation structure. This work demonstrates a method for detecting the structure of liquids, which will facilitate the study of structure-performance relationships and the screening of new electrolytes.

Energy & Fuels published new progress about Batteries (high-voltage). 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

Dong, Juan; Tian, Xin; Sun, Xiao-yi; Jiang, Wen-wei; Luo, Qin; Yang, Qin published the artcile< Study on synthesis technology of 4,6-dinitro-1,2,3-trichlorobenzene and waste acid recycling>, Reference of 112-63-0, the main research area is dinitrotrichlorobenzene waste acid recycling.

The nitration of 1,2,3-trichlorobenzene are studied in the binary system of sulfuric acid and nitric acid. The effect of molar ratio of raw materials, reaction temperature and reaction time on the yield are evaluated in the system of nitric acid/sulfuric acid. The optimum process parameters are selected in the system of 98% of sulfuric acid and 65% of nitric acid as follows: n(1,2,3-trichlorobenzene):n(sulfuric acid):n(nitric acid) = 1:11.3:2.3, reaction temperature 65°C and reaction time 4.5 h. The yield of 4,6-dinitro-1,2,3-trichlorbenzene is 93.95%. The concentration of waste acid can reach to about 95% by extracting and distilling in vacuo. Both the sulfuric acid and residue after recrystallization can be recycled as starting materials in another synthetic reaction of 4,6-dinitro-1,2,3-trichlorbenzene, the product is obtained in yields greater than about 94 mol percent with purity being greater than about 99w%, The structure of target product is characterized by IR, HPLC and Element anal.

Procedia Engineering published new progress about Nitrification. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

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

Bradsher, C. K.; Gross, P. M.; Hobbs, M. E.; Kittila, R. S.; Rapoport, L.; Tarrant, P.; West, G. published the artcile< Chloro- and dichlorobis(trichloromethyl)benzenes>, Electric Literature of 112-63-0, the main research area is .

1,3-C6H4(CCl3)2 (I) (243 g.) and 0.25 g. Fe filings, chlorinated (5 hrs.) at 115-25°, give 73 g. 5-chloro-1,3-bis(trichloromethyl)benzene (II), m. 77-8°; hydrolysis gives 5,1,3-ClC6H3(CO2H)2, whose di-Me ester m. 79-80°. Dichlorination of I (10 hrs. at a temperature as high as 145°) or of II yields a di-Cl derivative, b9 184-9°, and a small quantity of 2,5,1,4-Cl2C6H2(CCl3)2, m. 191-2°. 2,1,3-ClC6H3Me2, chlorinated at 120-30° (Hg arc), gives 30% 2-chloro-1,3-bis(trichloromethyl)benzene (III), m. 136-7°. 4,1,3-ClC6H3Me2 yields 50% 4,1,3-ClC6H3(CCl3)2, b8.5 180-5°, and a small quantity of III. 4,1,3-FC6H3Me2 yields 82% 4-fluoro-1,3-bis(trichloromethyl)benzene, b11 157.5-9.5°. 2,1,4-ClC6H3Me2 yields 79% 2-chloro-1,4-bis(trichloromethyl)benzene, m. 78-80°.

Journal of the American Chemical Society published new progress about Chlorination. 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

Badali, Mohammad; Khalafy, Jabbar; Alidoost, Elnaz; Aghazadeh, Masomeh published the artcile< Ammonium hydrotribromide salts as convenient and selective brominating agents of aryl methyl ketones>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is aryl ketone ammonium hydrotribromide salt monobromination regioselective; bromo ketone preparation.

A simple and improved protocol for the α-monobromination of acetophenone and acetyl carbazole derivatives using different ammonium hydrotribromide salts under mild reaction condition was described.

Journal of the Chemical Society of Pakistan published new progress about Alkyl aryl ketones 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

Zeng, Kun; Xi, Wenqun; Qiao, Yuanjiao; Huang, Xiaosheng; Liu, Xinhua published the artcile< Paeoniflorin inhibits epithelial mesenchymal transformation and oxidative damage of lens epithelial cells in diabetic cataract via sirtuin 1 upregulation>, Quality Control of 112-63-0, the main research area is human EMT diabetic cataract lens epithelial cells paeoniflorin; EMT; Paeoniflorin; SIRT1; diabetic cataract; lens epithelial cells; oxidative damage.

Paeoniflorin (Pae) has been reported to serve an important role in complications associated with diabetes. To the best of our knowledge, the role of Pae in diabetic cataracts has not yet been reported. Human lens epithelial SRA01/04 cells were induced by high glucose (HG) and subsequently treated with Pae. Cell viability was detected using the MTT assay. Moreover, LDH levels were detected. Immunofluorescence (IF) and Western blotting were used to determine the protein expression levels of N-cadherin and E-cadherin. ELISA was performed to determine oxidative stress-related indicator levels. TUNEL and Western blotting detected the apoptotic rate. The mRNA and protein expression levels of sirtuin 1 (SIRT1) in SRA01/04 cells were measured via reverse transcription-quant. PCR and Western blotting, resp. Subsequently, cell transfection techniques were used to inhibit the expression of SIRT1 in cells. MTT, ELISA, IF, Western blotting and TUNEL assays were used to investigate the mechanisms of epithelial-mesenchymal transition (EMT) and oxidative damage with Pae in the diabetic cataract. Pae significantly increased cell viability and possibly inhibit the EMT and oxidative damage of SRA01/04 cells induced by HG. Pae was demonstrated to upregulate SIRT1 expression levels. The results therefore suggested that the downregulation of SIRT1 reversed the protective effect of Pae on EMT and oxidative damage in SRA01/04 cells induced by HG. In conclusion, Pae may inhibit EMT of lens epithelial cells and reduce oxidative damage in diabetic cataracts via the upregulation of SIRT1.

Bioengineered published new progress about Apoptosis. 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

Zhang, Rupeng; Cui, Can; Xiao, Rang; Ruinan, L.; Mu, Tiansheng; Huo, Hua; Ma, Yulin; Yin, Geping; Zuo, Pengjian published the artcile< Enabling the conventional TFSI-based electrolytes for high-performance Mg/Li hybrid batteries by Mg electrode interfacial regulation>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is magnesium lithium electrode interfacial regulation hybrid battery.

The Mg-metal batteries (MMBs) as a forceful competitor for Li-metal batteries (LMBs) have the advantages of high-safety and high-volume energy d. Whereas, the MMBs still confronts two vital issues to be addressed, including the incompatibility of conventional TFSI-based electrolytes with the Mg electrode and the poor reversibility of the cathode. In this work, to satisfyingly settle the incompatibility, an artificial interphase was first pre-constructed by high-temperature displacement reaction of CuCl2 and Mg metal, responsible for the faster charge-transfer rate and the lower Mg plating/stripping overpotential (∼0.2 V) in Mg sym. cells. Regarding the Mg-Mo6S8 full cells, to enhance the reversibility and rate performance, Mg/Li hybrid batteries were designed. Consequently, the Mg-Mo6S8 battery can achieve excellent cycle stability and deliver a desirable capacity. Even as the c.d. increases to 1C, the battery still shows a desirable capacity of 92 mAh g-1 over 500 cycles.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Current density. 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

Sehaki, Chabha; Jullian, Nathalie; Choque, Elodie; Dauwe, Rebecca; Fontaine, Jean Xavier; Molinie, Roland; Ayati, Fadila; Fernane, Farida; Gontier, Eric published the artcile< Profiling of Essential Oils from the Leaves of Pistacia lentiscus Collected in the Algerian Region of Tizi-Ouzou: Evidence of Chemical Variations Associated with Climatic Contrasts between Littoral and Mountain Samples>, Electric Literature of 112-63-0, the main research area is Pistacia lentiscus leaf essential oil chem variation; Pistacia lentiscus; antioxidant activity; essential oil; fatty acid.

Leaves of Pistacia lentiscus were collected from two Algerian sites in the mountains and the littoral of the Tizi-Ouzou region. The harvest was conducted in four consecutive seasons on the same selected set of trees. Essential oils (EOs) were extracted by hydrodistillation; then, they were analyzed by gas chromatog. coupled mass spectrometry (GC-MS). Forty-seven constituents could be detected and quantified, including α-pinene (2-13%), β-caryophyllene (8-25%), β-myrcene (0.3-19%), bornyl acetate (0.8-7%), δ-cadinene (3-8%), bisabolol (1-9%), β-pinene (0.9-7%), caryophyllene oxide (4-9%), and α-cadinol (3-11%). Antioxidant (AOx) activities of the EOs were assessed by ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and 2,2 ‘-azino-bis (3-ethylbenzothiazoline)-6-sulfonic acid (ABTS) assays. Significant differences in EO composition and AOx activities appeared dependent on the season and the site. Variations of AOx activities were significant for the FRAP and ABTS tests but not for DPPH. Characterization of the leaf fatty acyl (FA) profiles was performed by GC-MS. Variability appeared according to season and altitude. Polyunsaturated fatty acids levels were high (27-55%) at the coldest date and place. The levels of linolenic acyl in the leaves were significantly correlated with bisabolol levels in the EOs (Spearman’s correlation coefficient: 0.818). Such results will be useful for the sustainable local valorization of wild P. lentiscus. These data also open new routes for further studies on terpenoid biosynthesis using correlation networks and fluxomic approaches.

Molecules published new progress about Antioxidants. 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