Category: 112-63-0

Watanabe, Toshio; Wang, Zun-Yao; Takahashi, Ohgi; Morihashi, Kenji; Kikuchi, Osamu published the artcile< Calculation of systematic set of bond dissociation enthalpies of polyhalogenated benzenes>, Application of C19H34O2, the main research area is systematic bond dissociation enthalpy polyhalogenated benzene.

The bond dissociation enthalpies (BDEs) of polyhalogenated benzenes were calculated by using the G2M(CC), B3LYP/6-311G(2df,p), and B3LYP/6-311G(d,p) methods. The BDEs of C-H and C-X (X = F, Cl, and Br) calculated by these three methods well reproduced the exptl. BDEs, within 1.2, 2.3, and 4.5 kcal/mol, resp. The anal. of the basis set dependence of the BDEs showed that the BDEs calculated by the B3LYP/6-311G(d,p) method are sufficient for the quant. discussion. An accurate and systematic set of the BDEs of polyhalogenated benzenes was thus obtained by B3LYP/6-311G(d,p) calculations The substitution effects on the BDEs of polyhalogenated benzenes were analyzed by using a linear scheme with and without the correction terms for steric effect. The resulting regression equation for the C-F BDEs well reproduced the calculated C-F BDEs even without the correction term for steric effect, but the regression equations for the C-Cl and C-Br BDEs needs the correction term for steric effect.

Journal of Molecular Structure: THEOCHEM published new progress about Ab initio methods (G2M(RCC)). 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

Ghosh, Subrata K.; Hu, Mengnan; Comito, Robert J. published the artcile< One-Pot Synthesis of Primary and Secondary Aliphatic Amines via Mild and Selective sp3 C-H Imination>, Related Products of 112-63-0, the main research area is primary secondary aliphatic amine preparation selective imination; C閳å¢?functionalization; amination; hydrogen-atom transfer; hypervalent iodine; radical reactions.

The direct replacement of sp3 C-H bonds with simple amine units (-NH2) remains synthetically challenging, although primary aliphatic amines are ubiquitous in medicinal chem. and natural product synthesis. Authors report a mild and selective protocol for preparing primary and secondary aliphatic amines in a single pot, based on intermol. sp3 C-H imination. The first C-H imination of diverse alkanes, this method shows useful site-selectivity within substrates bearing multiple sp3 C-H bonds. Furthermore, this reaction tolerates polar functional groups relevant for complex mol. synthesis, highlighted in the synthesis of amine pharmaceuticals and amination of natural products. Authors characterize a unique C-H imination mechanism based on radical rebound to an iminyl radical, supported by kinetic isotope effects, stereoablation, resubmission, and computational modeling. This work constitutes a selective method for complex amine synthesis and a new mechanistic platform for C-H amination.

Chemistry – A European Journal published new progress about Aliphatic amines Role: SPN (Synthetic Preparation), PREP (Preparation) (primary and secondary). 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

Nazarov, I. N.; Semenovskii, A. V. published the artcile< Orientation of chloromethylation reaction>, Reference of 112-63-0, the main research area is .

The isomers formed in chloromethylation of aromatic compounds show o-p-isomer formation which parallels the data on nitration of halobenzenes and chlorination of halobenzenes with FeCl3 (cf. Kovacic and Brace, C.A. 49, 13133g). Passage of HCl 0.5 hr. into 100 ml. CCl4, 6 g. paraformaldehyde, and 6 g. ZnCl2, followed by 32.8 g. PhCH2CO2Et, 2 g. ZnCl2, and stirring 7 hrs. at 50�gave, after washing with H2O, 31% mixed ClCH2C6H4CH2CO2Et, b8 148-51� [n]D20 1.5240, d20 1.1623; this (3.81 g.) oxidized with 60 ml. 20% HNO3 under 30 atm. N 1.5 hrs. in an autoclave at 200�gave benzenedicarboxylic acids, 60.4% p-, 27% o- and 12.6% m-isomer, separated through the Ba salts. Similar reaction with C6H6 gave a mixture of xylylene dichlorides, b9 118.5-20� which on oxidation was shown to contain 69% p-, 16% o- and 15% m-isomers. A considerable part of the p-xylylene chloride may be frozen out and this product, m. 99-100.5� on oxidation with CrO3 in AcOH gave 98.3% terephthalic acid, while hydrolysis of the dichloride with chalk-H2O gave 78.3% p-C6H4 (CH2OH)2, m. 111-12� PhCH2Cl (63.3 g.), 15 g. paraformaldehyde, and 20 g. ZnCl2 in a stream of HCl gave 20 g. p-xylylene dichloride, m. 99-100� along with 9.7 g. liquid mixture of the o-, m-, and p-xylylene dichlorides. Passage of HCl 45 min. into 150 ml. CCl4, 17 g. paraformaldehyde, and 10 g. ZnCl2 followed by dropwise addition of 53 g. EtPh at 50�and stirring 20 min. longer gave 44.5% mixed EtC6H4CH2Cl, b12 95-101� and 12 g. (EtC6H4)2CH2, b12 150� Oxidation of the chloromethyl derivatives with CrO3-AcOH gave 70% p- and 30% o-isomers. Similar chloromethylation of cumene gave 45% mixed isomers of iso-PrC6H4CH2Cl, b15 100-10� which oxidized to 85% p- and 15% o-acids. Similarly, chloromethylation of Me3CPh gave 58% p-Me3CC6H4CH2Cl, b7 101-5� with much unreacted hydrocarbon, which oxidized with HNO3 as above gave only terephthatic acid. Passage of HCl 5 hrs. into 90 ml. concentrated HCl, 30 g. paraformaldehyde, and 80 g. EtPh, followed by stirring 20 hrs. at 50-5�gave 60% isomeric EtC6H4CH2Cl, 77% p- and 23% o-isomers as shown by oxidation with 20% HNO3, as above; similarly iso-PrPh gave 50% mixed iso-PrC6H4CH2Cl isomers, b11 98-102� which on oxidation contained 85% p- and 15% o-isomer. Passage of HCl 1.5 hrs. into 100 ml. CCl4, 30 g. paraformaldehyde, and 20 g. ZnCl2 followed by addition of 48 g. PhF and stirring 5.5 hrs. at 50�with addition of 1.5 g. ZnCl2 gave 78% mixed FC6H4CH2Cl, b17 69-74� which on freezing gave 20% p-isomer; the residue gave 3.35 g. diarylated product, b14 125-35� oxidation with CrO3-AcOH gave 80-9.6% p-isomer and about 11% o-isomer. Similar reaction with PhCl gave 62% mixed isomers of ClC6H4CH2Cl, b34 113-16� which on freezing gave 30% p-isomer, m. 27-8� the latter oxidized completely to p-ClC6H4CO2H, and oxidation of the total mixture indicated the formation of 62.6% p-isomer. Similarly, PhBr gave 76.2% mixed BrC6H4CH2Cl, b3 83-7� which gave 35% p-isomer, m. 37-8� oxidation with CrO3 showed the total formation of 58% p-isomer and residual 42-3% o-isomer. PhI similarly gave 76% chloromethylation product, b5 113-17� which gave 30% p-IC6H4CH2Cl, m. 52-3� while oxidation of the products with CrO3 showed 52.4% p- and 47% o-isomer. Oxidation of chloromethylated halobenzenes with HNO3 gave similar results for Cl and Br derivatives, but the iodine-derivative failed to give a product containing iodine.

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published new progress about Chloromethylation. 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

Lukin, Kirill; Kishore, Vimal; Gordon, Thomas published the artcile< Development of a Scalable Synthesis of Oxadiazole Based S1P1 Receptor Agonists>, Electric Literature of 112-63-0, the main research area is scalable oxadiazole synthesis S1P1 receptor agonist; byproduct triphenylphosphine oxide removal magnesium complex formation; oxadiazole improved synthesis cyclization acylamidoxime DBU.

A robust and scalable synthesis was developed for the preparation of oxadiazole based S1P1 inhibitors I and II. A new method for the separation of triphenylphosphine oxide from reaction products and an improved method for the synthesis of oxadiazoles in the presence of DBU were incorporated into the process to achieve its scalability.

Organic Process Research & Development published new progress about Sphingosine-1-phosphate receptor 1 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Drljaca, Jovana; Popovic, Aleksandra; Bulajic, Dragica; Stilinovic, Nebojsa; Vidicevic Novakovic, Sasenka; Sekulic, Slobodan; Milenkovic, Ivan; Ninkovic, Srdjan; Ljubkovic, Marko; Capo, Ivan published the artcile< Diazepam diminishes temozolomide efficacy in the treatment of U87 glioblastoma cell line>, Quality Control of 112-63-0, the main research area is U87 glioblastoma; antineoplastic agent; drug interactions; mitochondria; oxidative phosphorylation.

Aims : Many patients with glioblastoma (GBM) suffer from comorbid neurol./psychiatric disorders and, therefore, are treated with psychopharmacol. agents. Diazepam (DIA) is widely adopted to treat status epilepticus, alleviate anxiety, and inhibit chemotherapy-associated delayed emesis in GBM patients. Even though temozolomide (TMZ) and DIA could be found as possible combination therapy in clin. practice, there are no reports of their combined effects in GBM. Hence, it may be of interest to investigate whether DIA enhances the antitumor efficacy of TMZ in GBM cells. Methods : U87 human GBM was used to examine the effects of combined TMZ and DIA on cell viability, and the oxygen consumption within the cells, in order to evaluate mitochondrial bioenergetic response upon the treatment. Results : The cooperative index showed the presence of antagonism between TMZ and DIA, which was confirmed on long-term observation. Moreover, the level of apoptosis after the TMZ treatment was significantly decreased when administered with DIA (p < 0.001). Concomitant use of TMZ and DIA increased the basal cell respiration rate, the oxidative phosphorylation rate, and maximal capacity of mitochondrial electron transport chain, as well as the activities of complexes I and II, vs. TMZ alone (p < 0.001). Conclusion : Comparing our results with data reported that DIA elicits cell cycle arrest in the G0/G1 phase and favors senescence reveals that DIA diminishes TMZ efficacy in concomitant use in the treatment of GBM. However, due to its great potency to hinder GBM proliferation and metabolism, it could be considered using DIA as maintenance therapy after TMZ cycles. CNS Neuroscience & Therapeutics published new progress about 112-63-0. 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

Biabiany, Stella; Araou, Emilie; Cormier, Fabien; Martin, Guillaume; Carreel, Francoise; Hervouet, Catherine; Salmon, Frederic; Efile, Jean-Claude; Lopez-Lauri, Felicie; D’Hont, Angelique; Lechaudel, Mathieu; Ricci, Sebastien published the artcile< Detection of dynamic QTLs for traits related to organoleptic quality during banana ripening>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is banana ripening QTL organoleptic quality dynamic.

Fruit quality traits are directly linked to consumer acceptability, and thus key targets for banana breeding programs. We explored the genetic control of three major organoleptic and ripening-related traits, namely pulp acidity (pH), firmness (PF) and dry matter content (DMC), over a 7-day ripening period and three production cycles in a banana segregating population genotyped by sequencing. Significant broad-sense heritabilities were estimated with 0.77, 0.46 and 0.81 values for pH, PF and DMC, resp. QTL detection was first performed on the whole dataset to analyze their dynamics. In a second approach, per-cycle data were considered to evaluate the stability across production cycles. Finally, a meta-anal. was performed. Various QTLs were detected, as well as many QTL colocalizations, while 12 of these QTLs were more prominent as they were detected in several approaches and/or explained over 15.0% of the phenotypic variation. Candidate genes were proposed for 10 of these QTLs. The QTL with the largest contribution to pulp acidity (R2 = 19.3-50.6%) was located on LG1_7 on the genetic map of Pisang Madu, i.e. a parent that is closely related to Cavendish, the worlds most cultivated dessert banana cultivar group. This QTL is located on a chromosome derived from a reciprocal translocation that does not recombine in Pisang Madu, which is a favorable context for mol. marker monitoring. These first results will provide a relevant basis for marker-assisted selection in banana improvement programs.

Scientia Horticulturae (Amsterdam, Netherlands) published new progress about Acidity. 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

Becker, Peter; Duhamel, Thomas; Martinez, Claudio; Muniz, Kilian published the artcile< Designing Homogeneous Bromine Redox Catalysis for Selective Aliphatic C-H Bond Functionalization>, COA of Formula: C19H34O2, the main research area is sulfonamide bromine mCPBA light oxidation intramol amination catalyst; pyrrolidine sulfonyl preparation; oxaziridine sulfonyl preparation; C閳å¢?functionalization; Hofmann-L鏋歠fler reaction; amination; bromine; catalysis.

The potential of homogeneous oxidation catalysis employing bromine has remained largely unexplored. We herein show that the combination of a tetraalkylammonium bromide and meta-chloroperbenzoic acid offers a unique catalyst system for the convenient and selective oxidation of saturated C(sp3)-H bonds upon photochem. initiation with day light. This approach enables remote, intramol., position-selective C-H amination as demonstrated for 20 different examples. For the first time, an N-halogenated intermediate was isolated as the active catalyst state in a catalytic Hofmann-Loffler reaction. In addition, an expeditious one-pot synthesis of N-sulfonyl oxaziridines from N-sulfonamides was developed and exemplified for 15 transformations. These pioneering examples provide a change in paradigm for mol. catalysis with bromine.

Angewandte Chemie, International Edition published new progress about Amination (intramol.). 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

Zhang, Ingrid W.; Curto, Anna; Lopez-Vicario, Cristina; Casulleras, Mireia; Duran-Guell, Marta; Flores-Costa, Roger; Colsch, Benoit; Aguilar, Ferran; Aransay, Ana M.; Lozano, Juan Jose; Hernandez-Tejero, Maria; Toapanta, David; Fernandez, Javier; Arroyo, Vicente; Claria, Joan published the artcile< Mitochondrial dysfunction governs immunometabolism in leukocytes of patients with acute-on-chronic liver failure>, Category: esters-buliding-blocks, the main research area is gene expression mitochondrial dysfunction immunometabolism leukocyte acute liver failure; ACLF; RNA-seq; acute decompensated cirrhosis; immune cells; metabolic phenotype; mitochondria.

Patients with acute-on-chronic liver failure (ACLF) present a systemic hyperinflammatory response associated with increased circulating levels of small-mol. metabolites. To investigate whether these alterations reflect inadequate cell energy output, we assessed mitochondrial morphol. and central metabolic pathways with emphasis on the tricarboxylic acid (TCA) cycle in peripheral leukocytes from patients with acutely decompensated (AD) cirrhosis, with and without ACLF.The study included samples from patients with AD cirrhosis (108 without and 128 with ACLF) and 41 healthy individuals. Leukocyte mitochondrial ultrastructure was visualized by transmission electron microscopy and cytosolic and mitochondrial metabolic fluxes were determined by assessing NADH/FADH2 production from various substrates. Plasma GDF15 and FGF21 were determined by Luminex and acylcarnitines by LC-MS/MS. Gene expression was analyzed by RNA-sequencing and PCR-based glucose metabolism profiler array.Mitochondrial ultrastructure in patients with advanced cirrhosis was distinguished by cristae rarefication and swelling. The number of mitochondria per leukocyte was higher in patients, accompanied by a reduction in their size. Increased FGF21 and C6:0- and C8:0-carnitine predicted mortality whereas GDF15 strongly correlated with a gene set signature related to leukocyte activation. Metabolic flux analyses revealed increased energy production in mononuclear leukocytes from patients with preferential involvement of extra-mitochondrial pathways, supported by upregulated expression of genes encoding enzymes of the glycolytic and pentose phosphate pathways. In patients with ACLF, mitochondrial function anal. uncovered break-points in the TCA cycle at the isocitrate dehydrogenase and succinate dehydrogenase level, which were bridged by anaplerotic reactions involving glutaminolysis and nucleoside metabolismOur findings provide evidence at the cellular, organelle and biochem. levels that severe mitochondrial dysfunction governs immunometabolism in leukocytes from patients with AD cirrhosis and ACLF.Patients at advanced stages of liver disease have dismal prognosis due to vital organ failures and the lack of treatment options. In this study, we report that the functioning of mitochondria, which are known as the cell powerhouse, is severely impaired in leukocytes of these patients, probably as a consequence of intense inflammation. Mitochondrial dysfunction is therefore a hallmark of advanced liver disease.

Journal of Hepatology published new progress about Activating transcription factor 4 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

Zou, Yan; Wang, Yibin; Xu, Sen; Liu, Yanjie; Yin, Jinlong; Lovejoy, David B.; Zheng, Meng; Liang, Xing-Jie; Park, Jong Bae; Efremov, Yuri M.; Ulasovand, Ilya; Shi, Bingyang published the artcile< Brain Co-Delivery of Temozolomide and Cisplatin for Combinatorial Glioblastoma Chemotherapy>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is biomimetics; blood-brain barrier; brain delivery; combinational chemotherapy; glioblastoma.

Glioblastoma (GBM) is an intractable malignancy with high recurrence and mortality. Combinatorial therapy based on temozolomide (TMZ) and cisplatin (CDDP) shows promising potential for GBM therapy in clin. trials. However, significant challenges include limited blood-brain-barrier (BBB) penetration, poor targeting of GBM tissue/cells, and systemic side effects, which hinder its efficacy in GBM therapy. To surmount these challenges, new GBM-cell membrane camouflaged and pH-sensitive biomimetic nanoparticles (MNPs) inspired by the fact that cancer cells readily pass the BBB and localize with homologous cells, are developed. This study閳ョç?results show that MNPs can efficiently co-load TMZ and CDDP, transport these across the BBB to specifically target GBM. Incorporation of pH-sensitive polymer then allows for controlled release of drug cargos at GBM sites for combination drug therapy. Mice bearing orthotopic U87MG or drug-resistant U251R GBM tumor and treated with MNPs@TMZ+CDDP show a potent anti-GBM effect, greatly extending the survival time relative to mice receiving single-drug loaded nanoparticles. No obvious side effects are apparent in histol. analyses or blood routine studies. Considering these results, the study閳ョç?new nanoparticle formulation overcomes multiple challenges currently limiting the efficacy of combined TMZ and CDDP GBM drug therapy and appears to be a promising strategy for future GBM combinatorial chemotherapy.

Advanced Materials (Weinheim, Germany) published new progress about 112-63-0. 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

Datir, Rawlings P.; Kwaghe, Vivian; Roy, Sunando; Frampton, Dan; Breuer, Judith; Ogbanufe, Obinna; Murtala-Ibrahim, Fati; Charurat, Man; Dakum, Patrick; Sabin, Caroline A.; Ndembi, Nicaise; Gupta, Ravindra K. published the artcile< Deep sequencing of HIV-1 reveals extensive subtype variation and drug resistance after failure of first-line antiretroviral regimens in Nigeria>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is DNA sequencing HIV1 drug resistance antiretroviral population.

Deep sequencing could improve understanding of HIV treatment failure and viral population dynamics. However, this tool is often inaccessible in low- and middle-income countries. To determine the genetic patterns of resistance emerging in West African HIV-1 subtypes during first-line virol. failure, and the implications for future antiretroviral options. Patients and methods: Participants were selected from a Nigerian cohort of people living with HIV who had failed first-line ART and subsequently switched to second-line therapy. Whole HIV-1 genome sequences were generated from first-line virol. failure samples with Illumina MiSeq. Mutations detected at é–?% frequency were analyzed and compared by subtype. HIV-1 sequences were obtained from 101 participants (65% female, median age 30 years, median 32.9 mo of nevirapine- or efavirenz-based ART). Thymidine analog mutations (TAMs) were detected in 61%, other core NRTI mutations in 92% and NNRTI mutations in 99%. Minority variants (<20% frequency) comprised 18% of all mutations. K65R was more prevalent in CRF02AG than G subtypes (33% vs. 7%; P = 0.002), and é–? TAMs were more common in G than CRF02AG (52% vs. 24%; P = 0.004). Subtype G viruses also contained more RT cleavage site mutations. Cross-resistance to at least one of the newer NNRTIs, doravirine, etravirine or rilpivirine, was predicted in 81% of participants. Extensive drug resistance had accumulated in people with West African HIV-1 subtypes, prior to second-line ART. Deep sequencing significantly increased the detection of resistance-associated mutations. Caution should be used if considering newer-generation NNRTI agents in this setting. Journal of Antimicrobial Chemotherapy published new progress about Antiviral agents. 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