Tag: M.W=250-300

Hu, Yunfei; Chen, Li; Zou, Canlin; He, Jiangtao; Feng, Luanqi; Wu, Jia-Qiang; Chen, Wen-Hua; Hu, Jinhui published the artcile< Access to 3-Amino-[1,2,4]-triazolo Pyridines and Related Heterocycles via Electrochemically Induced Desulfurative Cyclization>, Reference of 112-63-0, the main research area is hydrazinopyridine isothiocyanate tetrabutylammonium iodide catalyst desulfurative cyclization; amino triazolo pyridine electrochem preparation.

An efficient, one-pot approach was established for synthesizing a wide range of 3-amino-[1,2,4]-triazolo pyridines and related heterocycles from the electrochem. induced desulfurative cyclization of 2-hydrazinopyridines with isothiocyanates. The protocol allowed for the formation of C-N bonds under simple conditions without transition metals or external oxidants. The practicability of this strategy was demonstrated by its broad substrate scope, good functional group compatibility, and gram-scale synthesis. The late-stage modification of 3-amino-[1,2,4]-triazolo pyridines enabled to obtain several mols. with potent anticancer activity.

Organic Letters published new progress about Antitumor agents. 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

Majee, Debashis; Jakkampudi, Satish; Arman, Hadi D.; Zhao, John C.-G. published the artcile< Enantioselective Synthesis of Cyclohexenol Derivatives from γ-Aryl-Substituted Enals via an Organocatalyzed Three-Component Reaction>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is cyclohexenol preparation enantioselective diastereoselective; unsaturated aldehyde nitroalkene cinchona alkaloid squaramide catalyst.

A three-component reaction between γ-aryl-substituted α,β-unsaturated aldehydes and nitroalkenes was realized by using cinchona alkaloid-derived (thio)ureas and squaramides via the dienolate intermediates. This unprecedented 1,3- and 1,5-reactivity of dienolates of the γ-aryl-α,β-unsaturated aldehydes led to the formation of cyclohexenol derivatives I (R1 = Ph, 4-MeOC6H4, 4-FC6H4, etc.; R2 =Ph, 2-BrC6H4, 2-theinyl, etc.) with four contiguous stereogenic centers and a chiral substituent at C2 with good diastereoselectivities and high ee values. Such reactivities of the dienolates are totally different from those of the corresponding dienamine intermediates.

Organic Letters published new progress about Alkenes, nitro Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Xu, Lianhong; Lewis, Iestyn R.; Davidsen, Steven K.; Summers, James B. published the artcile< Transition metal catalyzed synthesis of 5-azaindoles>, Application In Synthesis of 112-63-0, the main research area is azaindole preparation transition metal catalyzed.

In an effort to develop synthetic procedures for the preparation of 2-substituted 5-azaindoles, the synthesis and cyclization reactions of acetylenic aminopyridines was explored. A novel method for the synthesis of 2-substituted 5-azaindoles via a transition metal catalyzed reaction is described. For example coupling reaction of 3-iodo-4-(tert-butoxycarbonyl)aminopyridine with propyne in the presence of Pd(PPh3)2Cl2, Et3N, and CuI at room temperature gave quant. 3-propynyl-4-(tert-butoxycarbonyl)aminopyrine, cyclization of which with CuI in DMF at 80° gave 84% 1-(tert-butoxycarbonyl)-2-methyl-5-azaindole.

Tetrahedron Letters published new progress about Transition metals Role: CAT (Catalyst Use), USES (Uses). 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

Guo, Haixin; Abe, Yuya; Qi, Xinhua; Smith, Richard Lee Jr published the artcile< Bifunctional carbon Ni/NiO nanofiber catalyst based on 5-sulfosalicylic acid for conversion of C5/C6 carbohydrates into ethyl levulinate>, Related Products of 112-63-0, the main research area is carbon nickel oxide catalyst sulfosalicylic acid carbohydrate ethyl levulinate.

A method was developed for preparing bifunctional carbon Ni/NiO nanofiber catalysts that promote efficient one-pot conversion of C5/C6 carbohydrates into levulinate esters in alc. solvents. The bifunctional catalysts were prepared via solvothermal carbonization of 5-sulfosalicylic acid/NiSO4 without the use of sulfuric acid or hydrogen gas and had fine particle sizes (d = 5 nm to 50 nm) and contained -NH2, -SO3H, -COOH and phenolic -OH functional groups. Under optimal conditions, the catalysts afforded 93% selectivity of Et levulinate in ethanol with the major intermediate being 2-(ethoxymethyl)furan, 4,5,5-triethoxypentan-2-one and major byproduct being 2,5,5-triethoxpentan-2-one. Cooperative activity of Lewis acidity, Bronsted acidity and functional group sites of the catalyst is demonstrated for multi-step reaction sequences of C5/C6 carbohydrates with one-pot conversions and alcs. (methanol, ethanol, 1-propanol, 1-butanol) that act as both solvent and hydrogen donor source in which the bifunctional catalyst was shown to be recyclable five times with no apparent change in conversion and ca. 5% change in selectivity.

Reaction Chemistry & Engineering published new progress about Carbon fibers Role: CAT (Catalyst Use), USES (Uses). 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

Mardenborough, Leroy G.; Zhu, Xue Y.; Fan, Pincheng; Jacob, Melissa R.; Khan, Shabana I.; Walker, Larry A.; Ablordeppey, Seth Y. published the artcile< Identification of bis-quindolines as new antiinfective agents>, COA of Formula: C19H34O2, the main research area is bisquindoline preparation antiinfective agent SAR.

Several N-substituted quindolines were made to further evaluate the role of N-alkylation on the activity of indoloquinolines as antifungal agents. While N-5 substitution is required for these activities, N-10 alkylation alone leads to inactive products but is tolerated in the presence of N-5 alkyl groups. It was also discovered that bis-quindolines appear to have a more expanded antimicrobial spectrum and lower cytotoxicity than their monomeric counterparts.

Bioorganic & Medicinal Chemistry published new progress about Antimalarials. 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

Alegre-Requena, Juan V.; Haring, Marleen; Sonsona, Isaac G.; Abramov, Alex; Marques-Lopez, Eugenia; Herrera, Raquel P.; Diaz, David Diaz published the artcile< Synthesis and supramolecular self-assembly of glutamic acid-based squaramides>, Application of C19H34O2, the main research area is glutamic acid squaramide self assembly; glutamic acid derivative; organogel; self-assembly; squaramide; supramolecular gel.

We describe the preparation and characterization of two new unsym. squaramide-based organogelators. The synthesis of the compounds was carried out by subsequent amine condensations starting from di-Me squarate. The design of the gelators involved a squaramide core connected on one side to a long aliphatic chain and on the other side to a glutamic acid residue. The gelator bearing the free carboxylic groups showed a lower gelation capacity than its precursor diester derivative Some selected gels were further studied by IR spectroscopy, rheol. and electron microscopy. Critical gelation concentrations and gel-to-sol transition temperatures were also determined for each case. In addition, the superior squaramide diester gelator was compared with an analog triazole-based gelator in terms of critical gelation concentration, gelation kinetics and thermal phase transition.

Beilstein Journal of Organic Chemistry published new progress about Gelation. 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

Samartsev, Victor N.; Semenova, Alena A.; Ivanov, Andrey N.; Dubinin, Mikhail V. published the artcile< Comparative study of free respiration in liver mitochondria during oxidation of various electron donors and under conditions of shutdown of complex III of the respiratory chain>, Formula: C19H34O2, the main research area is electron transport chain respiration liver mitochondria oxidation; Decoupling; Electron transport chain; Free respiration; Mitochondria; Uncoupling; α,ω-hexadecanedioic acid.

The present work shows that the rate of free respiration of liver mitochondria in the absence of ATP synthesis (state 4) during the oxidation of succinate is 1.7 times higher than during the oxidation of glutamate with malate. In turn, in the case of oxidation of ferrocyanide with ascorbate, this value is 3.1 times greater than in the case of succinate oxidation A similar pattern is also observed upon stimulation of free respiration by low concentrations (5 and 10μM) of the protonophore uncoupler 2,4-dinitrophenol (DNP). It is found that the passive leakage rate of protons in state 4 is the same if the H+/O ratios are 10, 6, and 2 upon the oxidation of glutamate with malate, succinate, and ferrocyanide with ascorbate, resp. At these values of the H+/O ratio, low concentrations of DNP stimulate passive proton leakage equally during the oxidation of these respiration substrates. In the case of succinate oxidation, bypassing complex III by N,N,N’,N’-tetramethyl-p-phenylenediamine (TMPD) to the maximum degree, as well as switching this complex completely to idle mode by α,ω-hexadecanedioic acid (HDA) cause a 3-fold stimulation of respiration in state 4. We conclude that at mitochondrial free respiration the values of the H+/2e- ratio for complexes I, III, and IV of the respiratory chain are 4, 4, and 2, resp. It is assumed that the free respiration of mitochondria is carried out by simple diffusion of protons through the inner membrane, and the rate of this diffusion depends on the total number of protons released by the complexes of the electron transport chain into the intermembrane space.

Biochemical and Biophysical Research Communications published new progress about Diffusion (proton). 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

Asaula, Vitalii M.; Buryanov, Volodymyr V.; Solod, Bohdan Y.; Tryus, Daryna M.; Pariiska, Olena O.; Kotenko, Igor E.; Volovenko, Yulian M.; Volochnyuk, Dmitriy M.; Ryabukhin, Sergey V.; Kolotilov, Sergey V. published the artcile< Catalytic Hydrogenation of Substituted Quinolines on Co-Graphene Composites>, Related Products of 112-63-0, the main research area is quinoline preparation catalytic hydrogenation cobalt graphene composite.

A set of 20 composites was prepared by pyrolysis of Co2+ complexes with 1,10-phenanthroline, melamine and 1,2-diaminobenzene. These composites were tested as the catalysts for the hydrogenation of quinolines. As shown by powder X-ray diffraction and TEM, the composites contained Co particles of several dozen nm sizes. The composition (elements content), Raman spectra X-ray photoelectron spectra parameters of the composites were analyzed. It was found that there was no distinct factor that controlled the yield of 1,2,3,4-tetrahydroquinolines in the investigated process. The yields of the resp. products were in the range 90-100%. The three most active composites were selected for scale-up and hydrogenation of a series of substituted quinolines. Up to 97% yield of 1,2,3,4-tetrahydroquinoline was obtained on a 50 g scale. Five representative substituted quinolines were synthesized on a 10-20 g scale using the Co-containing composites as the catalysts.

European Journal of Organic Chemistry published new progress about Hydrogenation. 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

Mao, Meng; Chu, Qinjun; Lou, Yongli; Lv, Peipei; Wang, Lin-Jian published the artcile< RNA N1-methyladenosine regulator-mediated methylation modification patterns and heterogeneous signatures in glioma>, Computed Properties of 112-63-0, the main research area is glioma methylation RNA N1methyladenosine; TMZ-resistance; glioma; heterogeneity; m1A; stemness; tumor microenvironment.

N1-methyladenosine (m1 A) is ubiquitous in eukaryotic RNA and regulates mRNA translation. However, little is known about its regulatory role in glioma. Here, we identified 4 m1 A modification-related patterns based on m1 A regulators in the TCGA (The Cancer Genome Atlas) and CGGA (Chinese Glioma Genome Atlas) cohorts. The differences in survival prognosis between different clusters were striking. In addition, stemness, genomic heterogeneity, tumor microenvironment (TME), and immune cell infiltration were also significantly different between the poor and best prognostic clusters. To reveal the underlying mechanism, differentially expressed genes (DEGs) between the poor and best prognostic clusters were identified, and then were integrated for weighted correlation network anal. (WGCNA). After Univariate Cox-LASSO-Multivariate Cox analyses, DEGs PLEK2 and ABCC3 were screened as the risk-hub genes and were selected to construct an m1 A-related signature. Moreover, ABCC3 exacerbated glioma proliferation and was associated with temozolomide (TMZ) resistance. Overall, our study provided new insights into the function and potential therapeutic role of m1 A in glioma.

Frontiers in Immunology published new progress about CD4 antigens Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Zhou, Yumei; Wang, Tieshan; Zhao, Xiaoshan; Wang, Ji; Wang, Qi published the artcile< Plasma metabolites and gut microbiota are associated with T cell Imbalance in BALB/c model of eosinophilic asthma>, Application of C19H34O2, the main research area is metabolite immunity eosinophilic allergy asthma; Tcell imbalance; drug treatment; eosinophilic asthma; gut microbiota; plasma metabolites.

The pathogenesis of allergic asthma is complex, it is usually caused by immune system imbalance. Th1, Th2, regulatory T cells (Treg) and T helper 17 (Th17) cells have an important role in the pathogenesis of eosinophilic asthma. Yet, the exact role of Th1, Th2, Treg and Th17 cells in eosinophilic asthmatic disease is not fully understood. This study used an untargeted plasma metabolomics combine 16S rDNA technol. to identify new biomarkers of plasma metabolites and gut microbiota in ovalbumin-induced eosinophilic allergic asthma in BALB/c mice to further explore the biomarkers in regulating the immune balance or the immune response. We discovered that malate, L-dihydroorotate were associated with Th1/Th2 and Treg/Th17 cells balance, imidazoleacetic acid was associated with Th1/Th2 cell balance, 1,5-anhydro-d-sorbitol was associated with Treg/Th17 cell balance. The results also found that genus Candidatus Arthromitus of gut microbiota were associated with Th1/2, Treg/Th17 balance, genus Ruminiclostridium 6, they were all associated with Th1/2 and Treg/Th17 cell balance, while the gut microbiota were not associated with penh value which reflect airway hyperresponsiveness (AHR) in the eosinophilic asthma mice model. Interestingly, the plasma metabolite biomarkers of malate, L-dihydroorotate are associated with genus Ruminiclostridium 6, they were all associated with Th1/2 and Treg/Th17 cell balance, while imidazoleacetic acid is associated with genus Ruminiclostridium 6 which is associated with Th1/2 balance. Among the differential plasma metabolites, 1,5-anhydro-d-sorbitol is associated with genus Ruminiclostridium6 and genus Candidatus Arthromitus. Among them, malate participate in the T cell activation, T cell differentiation and activation may be a new research direction in eosinophilic allergic asthma. We firstly study the gut microbiota and plasma metabolites markers of immune balance in eosinophilic asthma in mice model, laying a foundation for drug treatment in eosinophilic allergic asthma.

Frontiers in Pharmacology published new progress about Allergic asthma. 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