Category: 112-63-0

Lipshutz, Bruce H.; Noson, Kevin; Chrisman, Will; Lower, Asher published the artcile< Asymmetric Hydrosilylation of Aryl Ketones Catalyzed by Copper Hydride Complexed by Nonracemic Biphenyl Bis-phosphine Ligands>, Electric Literature of 112-63-0, the main research area is copper hydride diphosphine catalyst asym hydrosilylation reduction aromatic ketone; ketone aromatic asym hydrosilylation reduction chiral benzyl alc preparation; silane hydrosilane reduction aromatic ketone asym copper diphosphine catalyst.

Copper hydride is an extremely reactive catalyst capable of effecting asym. hydrosilylations of aromatic ketones at temperatures between -50 and -78°, when complexed by chiral diphosphines of the BIPHEP or the SEGPHOS series. Inexpensive silanes serve as stoichiometric sources of hydride. Substrate-to-ligand ratios exceeding 100,000:1 were achieved. The level of induction is usually in the >90% ee category. The nature of the reagent was investigated using spectroscopic and chem. means, although its exact structure remains unclear.

Journal of the American Chemical Society published new progress about Aralkyl alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Ledzion, Ewa; Rybinska, Krystyna; Postupolski, Jacek; Kurpinska-Jaworska, Jolanta; Szczesna, Malgorzata published the artcile< Studies and safety evaluation of aflatoxins in herbal plants>, Quality Control of 112-63-0, the main research area is medicinal plant aflatoxin contamination Poland.

The aflatoxin (AF; B1, B2, G1, G2) levels in medicinal herbal plants were determined by HPLC with post-column bromination derivatization with pyridinium hydrobromide perbromide (PBPB). Com. herbal plant samples (n = 519) originating mainly from Eastern Poland were studied in 2006-2010. The aqueous methanol herbal extracts clean-up was done with immunoaffinity columns. No sample had aflatoxin levels above the HPLC method detection limits (B1 0.2 μg/kg; B2 0.03 μg/kg; G1 0.3 μg/kg; G2 0.03 μg/kg). The studied herbal plants were prepared with good manufacturing practices during raw materials drying and storage and can be considered safe.

Roczniki Panstwowego Zakladu Higieny published new progress about Food contamination. 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

He, Dongmei; Wang, Peng; Liao, Fengyun; Yu, Lingling; Gan, Bing published the artcile< Cell membrane-coated biomimetic magnetic nanoparticles for the bio-specific extraction of components from Gualou Guizhi decoction exhibiting activities against oxygen-glucose deprivation/reperfusion injury>, Synthetic Route of 112-63-0, the main research area is Gualou Guizhi decoction oxygen glucose deprivation reperfusion injury; biomimetic magnetic nanoparticles component cell membrane; Cell membrane-coated magnetic beads; Gua-Lou-Gui-Zhi-decoction; Hypoxia-inducible factor-1α; Mass spectrometry; Oxygen-glucose deprivation/reperfusion injury; Stroke.

Gua-Lou-Gui-Zhi decoction (GLGZD) is a classical multiherb traditional Chinese medicine formula that has ameliorative effects on oxygen-glucose deprivation/reperfusion (OGD/R) injury and has been applied for the treatment of stroke in clin. practice; however, its active ingredients remain unknown. The aim of this study was to develop an effective method for screening for components of GLGZD with potential therapeutic activity against OGD/R injury. Brain microvascular endothelial cell membrane-coated magnetic beads (CMs@rBMECs-MBs) were incubated with the GLGZD extract; the bound material was eluted and the constituents were identified using solid phase extraction and ultra-performance liquid chromatog.-Orbitrap Fusion Tribrid mass spectrometry (UPLC-Orbitrap Fusion Tribrid MS). The biol. activities of the identified GLGZD components were analyzed using OGD/R-exposed brain endothelial cells. Seven compounds bound to the CMs@rBMECs-MBs were identified as gallic acid, paeoniflorin, liquiritigenin, isoliquiritigenin, liquiritin, isoliquiritin, and formononetin. Among them, six (except formononetin) protected brain endothelial cells against OGD/R injury in a concentration-dependent manner (20-120 μM; P < 0.01-0.05) and downregulated the expression of hypoxia-inducible factor-1α (P < 0.01) involved in the pathogenic mechanisms triggered by stroke. Our findings suggest that the screening of bioactive compounds using cell membrane-coated magnetic beads combined with solid phase extraction and UPLC-Orbitrap Fusion Tribrid MS is an effective method for the bio-specific extraction and identification of ingredients responsible for the therapeutic activity of traditional Chinese medicines. Journal of Pharmaceutical and Biomedical Analysis published new progress about Brain. 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

Haas, Ronja; Murat, Michael; Weiss, Manuel; Janek, Juergen; Natan, Amir; Schroeder, Daniel published the artcile< Understanding transport of atmospheric gases in liquid electrolytes for lithium-air batteries>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is atm gas transport liquid electrolyte lithium air battery.

In metal-air batteries, carbon dioxide (CO2) and nitrogen (N2) are, apart from oxygen (O2), also present as dissolved species in the liquid electrolyte. These dissolved gases can strongly influence the battery performance, as they affect the discharge mechanism and the stability of the lithium metal anode. Therefore, their solubility and diffusivity are important parameters, that are rarely considered in the development of electrolytes for metal-air batteries. Addnl., the diffusion coefficients are calculated through mol. dynamics simulations. The results agree well with the exptl. data. Furthermore, the influence of solvent parameters, such as surface tension and viscosity, on the solubility and the diffusivity as well as the impact of the addition of LiTFSI as conducting salt are investigated. The reported data will help to assess the impact of dissolved gases on the cell chem. of nonaqueous lithium-air batteries, especially on the solid electrolyte interphase (SEI) at the lithium anode, and to predict diffusivity and gas solubility in other electrolytes.

Journal of the Electrochemical Society published new progress about Battery anodes. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

Liotta, Frank J. Jr.; Van Duyne, Gregory; Carpenter, Barry K. published the artcile< Structures and rearrangement mechanisms for some bicyclo[6.1.0]nona-2,4,6-triene complexes of chromium, molybdenum, and tungsten>, Synthetic Route of 112-63-0, the main research area is crystal structure bicyclononatrienemolybdenum; mol structure bicyclononatrienemolybdenum; molybdenum bicyclononatriene structure; chromium bicyclononatriene structure; tungsten bicyclononatriene structure; rearrangement bicyclononatrienemolybdenum.

The structures of (bicyclo[6.1.0]nona-2,4,6-triene)tricarbonylmolybdenum and (endo-9-bromobicyclo[6.1.0]nona-2,4,6-triene)tricarbonylmolybdenum were investigated by x-ray crystallog. Both are shown to have geometries in which the cyclopropane ring is syn to the metal. In the 9-bromo complex only two of the three C:C bonds are coordinated to the metal; the third coordination site is occupied by the halogen. The mechanism of thermal rearrangement of (bicyclo[6.1.0]nona-2,4,6-triene)tricarbonylmolybdenum to (bicyclo[4.2.1]nona-2,4,7-triene)tricarbonylmolybdenum was investigated by deuterium-labeling and kinetic studies. A new, degenerate rearrangement of the starting complex was discovered in the course of this investigation. Similar processes are shown to occur for the corresponding chromium and tungsten complexes. Both types of rearrangement are sigmatropic processes in which the metal does not directly participate in cleavage of the C-C bond.

Organometallics published new progress about Crystal structure. 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

Pathak, Rahul; Hendrickson, Tamara L.; Imperiali, Barbara published the artcile< Sulfhydryl Modification of the Yeast Wbp1p Inhibits Oligosaccharyl Transferase Activity>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is oligosaccharyltransferase Wbp1p protein dolichylpyrophosphoryl diacetylchitobiose cysteine.

Chem. labeling of the multimeric Saccharomyces cerevisiae oligosaccharyl transferase indicates that the 48 kDa Wbp1p subunit is an integral component of the catalytically active enzyme. The enzyme was purified following chromatog. on Con A agarose, heparin agarose, Q-Sepharose, and hydroxyapatite media. The enzyme activity copurified with a tetrameric complex of polypeptide subunits. Two of the subunits have been identified as the yeast proteins Wbp1p and Swp1p by amino-terminal residue sequencing. A third subunit was identified as a variably glycosylated polypeptide near 64 kDa; preliminary amino acid sequencing showed no identity to known yeast proteins. Modification of a cysteine residue by the reagent Me methanethiolsulfonate (MMTS) caused time-dependent and concentration-dependent inactivation of the enzyme. To identify the modified subunit of the transferase complex, the labeled reagent S-[(N-biotinoylamino)ethyl] methanethiolsulfonate (BMTS) was synthesized. Like MMTS, BMTS inactivated the oligosaccharyl transferase in a time-dependent manner. Addnl., incubation with the substrate (dolichylpyrophosphoryl)-N,N’-diacetylchitobiose [Dol-PP(GlcNAc)2] protected the enzyme from BMTS inactivation. When the purified enzyme complex was incubated with BMTS, Wbp1p alone was specifically labeled, thereby associating this subunit with catalysis and the binding of the dolichylpyrophosphoryl oligosaccharide substrate in the transferase reaction.

Biochemistry published new progress about Enzyme functional sites. 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

Yousaf, Zeshan; Smith, Michael; Potluri, Prasad; Parnell, William published the artcile< Compression properties of polymeric syntactic foam composites under cyclic loading>, Application of C19H34O2, the main research area is polyurethane syntactic foam cyclic compression property.

In the present work, polymer-based syntactic foams were studied under cyclic compression in order to investigate their compressibility, recoverability, energy dissipation and damage tolerance. These syntactic foams were manufactured by adding hollow polymer microspheres of various sizes and wall thicknesses into a polyurethane matrix. The associated loading and unloading curves during cyclic testing were recorded, revealing the viscoelastic nature of the materials. SEM images of the samples were obtained in order to study potential damage mechanisms during compression. It was observed that these syntactic foams exhibit high elastic recovery and energy dissipation over a wide range of compressional strains and the addition of polymer microspheres mitigates the damage under compressional loading.

Composites, Part B: Engineering published new progress about Compressive strength. 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

Todo, Tomoki; Ito, Hirotaka; Ino, Yasushi; Ohtsu, Hiroshi; Ota, Yasunori; Shibahara, Junji; Tanaka, Minoru published the artcile< Intratumoral oncolytic herpes virus G47Δ for residual or recurrent glioblastoma: a phase 2 trial>, Application of C19H34O2, the main research area is intratumoral oncolytic herpes virus recurrent glioblastoma.

This investigator-initiated, phase 2, single-arm trial primarily assessed the efficacy of G47Δ, a triple-mutated, third-generation oncolytic herpes simplex virus type 1, in 19 adult patients with residual or recurrent, supratentorial glioblastoma after radiation therapy and temozolomide (UMIN-CTR Clin. Trial Registry UMIN000015995). G47Δ was administered intratumorally and repeatedly for up to six doses. The primary endpoint of 1-yr survival rate after G47Δ initiation was 84.2% (95% confidence interval, 60.4-96.6; 16 of 19). The prespecified endpoint was met and the trial was terminated early. Regarding secondary endpoints, the median overall survival was 20.2 (16.8-23.6) months after G47Δ initiation and 28.8 (20.1-37.5) months from the initial surgery. The most common G47Δ-related adverse event was fever (17 of 19) followed by vomiting, nausea, lymphocytopenia and leukopenia. On magnetic resonance imaging, enlargement of and contrast-enhancement clearing within the target lesion repeatedly occurred after each G47Δ administration, which was characteristic to this therapy. Thus, the best overall response in 2 yr was partial response in one patient and stable disease in 18 patients. Biopsies revealed increasing numbers of tumor-infiltrating CD4+/CD8+ lymphocytes and persistent low numbers of Foxp3+ cells. This study showed a survival benefit and good safety profile, which led to the approval of G47Δ as the first oncolytic virus product in Japan.

Nature Medicine (New York, NY, United States) published new progress about Adult, mammalian. 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

Kovacs, K.; Eros-Takacsy, T.; Ritz, I.; Hegedus-Vajda, J. published the artcile< Determination of the impurity profile of R1/CH-13584 by an online gas chromatography/mass spectrometry method>, Application of C19H34O2, the main research area is antiasthmatic CH 13584 intermediate impurity determination; gas chromatog CH 13584 intermediate impurity; mass spectrometry CH 13584 intermediate impurity.

The impurity profile of the final intermediate in the manufacture of a new, original antiasthmatic drug candidate (CH-13584) was determined by gas chromatog./mass spectrometry. Online GC/MS identification was carried out by using electron-impact ionization. Gas chromatog. separation was performed on a fused-silica column. Identification was based on mass spectral data: fragmentation patterns and elemental composition for the selected ions as well as the NIST library search for the separated impurities. GC retention times were also considered. Reference compounds with the proposed structure were synthesized and confirmed by IR, GC/MS, and NMR data. An identical impurity profile for the certified and the GMP batches proved the reliability of the synthetic process. The possibility of a potential parallel reaction of the impurities in the final reaction step was considered.

Rapid Communications in Mass Spectrometry published new progress about Mass spectra. 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

Jin, Zheng; Zhang, Wenbo; Luo, Yuan; Li, Xiushen; Qing, Lijin; Zuo, Qiang; Fang, Junfeng; Wu, Wei published the artcile< Protective effect of Qingre Huoxue decoction against myocardial infarction via PI3K/Akt autophagy pathway based on UPLC-MS, network pharmacology, and in vivo evidence>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is qingre huoxue decoction autophagy pathway network pharmacol myocardial infarction; Qingre Huoxue decoction; UPLC-MS; network pharmacology; autophagy; myocardial infarction.

ContextQingre Huoxue (QRHX) decoction, a traditional Chinese medicine, has been widely used to prevent and treat myocardial infarction (MI). ObjectiveThis study elucidates the possible mechanisms of QRHX in preventing or treating MI in a rat model. Materials and methodsThe chem. constituents of QRHX were identified by UPLC-MS. Sprague-Dawley rats were randomly divided into the Sham (normal saline), Model (normal saline), QRHX-L, QRHX-M and QRHX-H group (n = 10 per group). QRHX decoction was administered by gavage to the rats for 14 days (5, 10 and 20 g/kg/day). The left anterior descending ligation method was performed to develop MI in Model and QRHX groups, and the same surgical procedures excluding ligation sutures were performed for the sham group. Finally, we evaluated cardiac function, myocardial fibrosis degree, serum inflammatory factors, autophagy levels and verified the signalling pathways in vivo. ResultsA total of 68 active components of QRHX corresponding to 223 active targets were obtained and 2558 MI-related disease targets were collected. After integration, 123 QRHX anti-MI targets were obtained, and 70 signalling pathways, such as PI3K/Akt, were identified by enrichment anal. In vivo experiments suggest that QRHX could reduce the degree of myocardial fibrosis, downregulate serum inflammatory factors, and promote autophagy in MI rats. Discussion and ConclusionsQRHX plays a protective role in the myocardium by mediating PI3K/Akt signalling pathway to activate autophagy and inhibiting inflammatory factor expression. These findings provide a scientific basis for further research and validation of QRHX as a potential therapeutic for MI.

Pharmaceutical Biology (Abingdon, United Kingdom) published new progress about AKT-interacting protein AKTIP Role: BSU (Biological Study, Unclassified), PAC (Pharmacological Activity), THU (Therapeutic Use), BIOL (Biological Study), USES (Uses). 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