Tag: M.W=250-300

Kasper, Karl; Abreu, Ilka N.; Feussner, Kirstin; Zienkiewicz, Krzysztof; Herrfurth, Cornelia; Ischebeck, Till; Janz, Dennis; Majcherczyk, Andrzej; Schmitt, Kerstin; Valerius, Oliver; Braus, Gerhard H.; Feussner, Ivo; Polle, Andrea published the artcile< Multi-omics analysis of xylem sap uncovers dynamic modulation of poplar defenses by ammonium and nitrate>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is ammonium nitrate xylem sap dynamic modulation multiomic analysis; carbohydrates; metabolomics; nitrogen; phytohormones; proteomics; salicinoids.

Xylem sap is the major transport route for nutrients from roots to shoots. In the present study, we investigated how variations in nitrogen (N) nutrition affected the metabolome and proteome of xylem sap and the growth of the xylem endophyte Brennaria salicis, and we also report transcriptional re-wiring of leaf defenses in poplar (Populus 3 canescens). We supplied poplars with high, intermediate or low concentrations of ammonium or nitrate. We identified 288 unique proteins in xylem sap. Approx. 85% of the xylem sap proteins were shared among ammonium- and nitrate-supplied plants. The number of proteins increased with increasing N supply but the major functional categories (catabolic processes, cell wallrelated enzymes, defense) were unaffected. Ammonium nutrition caused higher abundances of amino acids and carbohydrates, whereas nitrate caused higher malate levels in xylem sap. Pipecolic acid and N-hydroxypipecolic acid increased, whereas salicylic acid and jasmonoyl-isoleucine decreased, with increasing N nutrition. Untargeted metabolome analyses revealed 2179 features in xylem sap, of which 863 were differentially affected by N treatments. We identified 124 metabolites, mainly from specialized metabolism of the groups of salicinoids, phenylpropanoids, phenolics, flavonoids, and benzoates. Their abundances increased with decreasing N, except coumarins. Brennaria salicis growth was reduced in nutrient-supplemented xylem sap of low- and high- NO3–fed plants compared to that of NH4+-fed plants. The drastic changes in xylem sap composition caused massive changes in the transcriptional landscape of leaves and recruited defenses related to systemic acquired and induced systemic resistance. Our study uncovers unexpected complexity and variability of xylem composition with consequences for plant defenses.

Plant Journal published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Halloran, Matthew W.; Nicell, Jim A.; Leask, Richard L.; Maric, Milan published the artcile< Small molecule plasticizers for improved migration resistance: Investigation of branching and leaching behaviour in PVC blends>, Computed Properties of 112-63-0, the main research area is plasticizer PVC composite leaching mech thermal property.

The influence of branching on plasticizer effectiveness and migration behavior of heptyl-succinate plasticizers blended with poly(vinyl chloride) (PVC) was evaluated. An increase of branching led to a decrease in migration of the plasticizers into both hexanes and vegetable oil medias. Addnl., a quant. 1H NMR method was used to identify plasticizer concentration in the leachates and compared to a gravimetric standard test method. Overall, the quant. 1H NMR method proved to be a more direct method to assess leaching. In comparison to com. plasticizer di(2-ethylhexyl) phthalate (DEHP) and alternative plasticizer diheptyl succinate (DHPS), all of the branched species displayed superior migration resistance into hexanes (two to ten-fold). The glass transition temperatures and stress at break data indicated that the plasticizers comprised of up to three branches functioned as well as, or better than DEHP and DHPS. However, there was a decrease in plasticizer efficiency with compounds comprised of four or more branches.

Materials Today Communications published new progress about Elongation at break. 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

Meiorin, Cintia; Calvo-Correas, Tamara; Mosiewicki, Mirna Alejandra; Aranguren, Mirta Ines; Corcuera, Maria Angeles; Eceiza, Arantxa published the artcile< Comparative effects of two different crosslinkers on the properties of vegetable oil-based polyurethanes>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is crosslinked polyol based polyurethane comparative preparation property.

Thermoset polyurethanes (PUs) were prepared from a polyol derived from castor oil, 4,4′;-methylene di-Ph diisocyanate (MDI) and different trifunctional low-mol.-weight crosslinkers, biobased glycerol (Gly) and petroleum-derived trimethylolpropane (TMP). The synthesis was carried out in bulk and without catalyst via one-step polymerization varying the components equivalent weight ratio, Polyol:MDI:Gly and Polyol:MDI:TMP, resp. The physicochem., morphol., thermal, dynamic-mech., and mech. properties of the PUs were determined The success of the reaction between the polyol and MDI was confirmed by Fourier transform IR spectroscopy. The dynamic-mech. and the mech. properties as well as hardness were determined and related to the concentration of the low-mol.-weight crosslinkers utilized (Gly or TMP). However, important differences were observed between the synthesized two series, due to phase separation produced during the curing reaction, which affected more the materials prepared from TMP. SEM images and dynamic-mech. results confirmed this difference, related to the reactivity of primary and secondary hydroxyls present in the crosslinkers. Thermogravimetric anal. also showed to be sensible to the different structure of the crosslinkers with TMP leading to more thermally stable samples. Finally, measurements of water contact angle indicated that the surfaces were mostly hydrophobic with minor differences between the samples.

Journal of Applied Polymer Science published new progress about Complex modulus, tan δ. 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

Matsuzaki, Kei; Yamamoto, Iwao; Enomoto, Koji; Kaneko, Yutaro; Mimura, Tohru; Shiio, Tsuyoshi published the artcile< Synthesis of antitumor polysaccharides>, COA of Formula: C19H34O2, the main research area is antitumor polysaccharide preparation.

Previously, several antitumor polysaccharides having D-glucopyranose, D-mannopyranose, D-arabinofuranose, or its oligomer as side chains of (1→3)- β-glucan, or (1→4)-β-glucan were synthesized by the orthoester method as models of natural antitumor polysaccharides, such as lentinan, etc. Some of these have indicated high antitumor activity against sarcoma 180 implanted into mice, to the same extent as the natural polysaccharides. In this report, water soluble, branched polysaccharides having L-arabinofuranose or its oligomer, L-arabinopyranose, or D-galactopyranose as side chains were synthesized, and their structures and antitumor activities were determined, in order to investigate the effect of the kind of side chains on the antitumor activity. These synthetic polysaccharides showed high antitumor activity.

Polymer Science and Technology (Plenum) published new progress about Antitumor agents. 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

Jagadeesh, Rajenahally V.; Surkus, Annette-Enrica; Junge, Henrik; Pohl, Marga-Martina; Radnik, Joerg; Rabeah, Jabor; Huan, Heming; Schuenemann, Volker; Brueckner, Angelika; Beller, Matthias published the artcile< Nanoscale Fe2O3-Based Catalysts for Selective Hydrogenation of Nitroarenes to Anilines>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is iron oxide catalyst nitroarene selective hydrogenation recycling.

Production of anilines-key intermediates for the fine chem., agrochem., and pharmaceutical industries relies on precious metal catalysts that selectively hydrogenate aryl nitro groups in the presence of other easily reducible functionalities. Herein, we report convenient and stable iron oxide (Fe2O3)-based catalysts as a more earth-abundant alternative for this transformation. Pyrolysis of iron-phenanthroline complexes on carbon furnishes a unique structure in which the active Fe2O3 particles are surrounded by a nitrogen-doped carbon layer. Highly selective hydrogenation of numerous structurally diverse nitroarenes (more than 80 examples) proceeded in good to excellent yield under industrially viable conditions.

Science (Washington, DC, United States) published new progress about Aromatic nitro compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Wang, Qiang; Tang, Xiang-Ying; Shi, Min published the artcile< Metal-Free Cross-Coupling of Arylboronic Acids and Derivatives with DAST-Type Reagents for Direct Access to Diverse Aromatic Sulfinamides and Sulfonamides>, Reference of 112-63-0, the main research area is aromatic sulfinamide sulfonamide preparation; arylboronic acid ester aminosulfur trifluoride cross coupling; arylboronic acids; cross-coupling; sulfinamides; sulfonamides; synthetic methods.

We have developed a simple and convenient method for the cross-coupling of arylboronic acids and their derivatives with DAST-type reagents under mild and metal-free conditions to directly afford sulfinamides in moderate to good yields. Moreover, sulfonamides were obtained after a simple oxidation reaction. The reaction mechanism was investigated by 18O-labeling experiments, and the synthetic utility was demonstrated by the sulfoxidation of natural products.

Angewandte Chemie, International Edition published new progress about Arenesulfonamides Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Di Iorio, Nicola; Champavert, Florian; Erice, Agostino; Righi, Paolo; Mazzanti, Andrea; Bencivenni, Giorgio published the artcile< Targeting remote axial chirality control of N-(2-tert-butylphenyl)succinimides by means of Michael addition type reactions>, Quality Control of 112-63-0, the main research area is remote axial chirality control Michael addition tertbutylphenylsuccinimide.

The efficient desymmetrization of N-(2-tert-butylphenyl)maleimides was realized by means of a Michael addition reaction of a series of carbon nucleophiles generating the corresponding axially chiral succinimides in high yields. The use of (DHQD)2Pyr as catalyst was fundamental to achieve the remote control of the stereogenic chiral axis with the concurrent construction of adjacent quaternary and tertiary stereocenters.

Tetrahedron published new progress about Atropisomers. 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

Xu, Peng; Wang, Handong; Pan, Hao; Chen, Jiakai; Deng, Chulei published the artcile< Anlotinib combined with temozolomide suppresses glioblastoma growth via mediation of JAK2/STAT3 signaling pathway>, SDS of cas: 112-63-0, the main research area is glioblastoma anlotinib temozolomide JAK2 STAT3 signal transduction; Anlotinib; Glioblastoma; Invasion; JAK2/STAT3/VEGFA signaling pathway; Migration; Proliferation.

Anlotinib protects against carcinogenesis through the induction of autophagy and apoptosis. The current study evaluated the role and mol. mechanisms of anlotinib in glioblastoma, and the effects of anlotinib in combination with temozolomide (TMZ). Cell Counting Kit-8 and colony-forming assays were used to evaluate cell viability. Cell migration and invasion were assessed by wound-healing, Transwell migration, and Matrigel invasion assays. Cellular apoptosis and cell cycle anal. were determined by flow cytometry. Angiogenesis was assessed using human umbilical vein endothelial cells (HUVECs). Vascular endothelial growth factor A (VEGFA) was measured by ELISA. Protein expression was determined by western blotting or immunofluorescence staining. The in vivo anti-glioblastoma effect was assessed with live imaging of tumor xenografts in nude mice. Anlotinib restricted the proliferation, migration, and invasion of glioblastoma cells in a dose-dependent manner. Tumor supernatant from glioblastoma cells treated with anlotinib inhibited angiogenesis in HUVECs. Anlotinib induced autophagy in glioblastoma cells by increasing Beclin-1 and microtubule-associated protein 1 light chain 3B (LC3B) levels. Mechanistically, anlotinib inhibited the Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3)/VEGFA signaling pathway. STAT3 inhibition by S3I-201 decreased VEGFA and suppressed cellular proliferation and movement. TMZ enhanced the anti-glioblastoma ability of anlotinib. Finally, anlotinib inhibited tumor growth and JAK2/STAT3/VEGFA signaling in xenografts. Anlotinib exerts anti-glioblastoma activity possibly through the JAK2/STAT3/VEGFA signaling pathway. TMZ potentiated the anti-glioblastoma effect of anlotinib via the same signaling pathway, indicating the potential application of anlotinib as a treatment option for glioblastoma.

Cancer Chemotherapy and Pharmacology published new progress about Angiogenesis. 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

Zhang, Zhiqing; Lv, Junshuai; Xie, Guanglin; Wang, Su; Ye, Yanshuai; Huang, Gaohua; Tan, Donlgi published the artcile< Effect of assisted hydrogen on combustion and emission characteristics of a diesel engine fueled with biodiesel>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is methyl ester diesel engine fuel combustion emission simulation.

In this paper, the effects of hydrogen assisted biodiesel with different fatty acid Me esters (FAMEs) proportion on cylinder pressure, cylinder temperature, indicated thermal efficiency (ITE), NOx emission, HC emission and CO emission of a marine medium speed diesel engine are studied. The corresponding CFD model is executed by CONVERGE coupled to CHEMKIN, and a chem. kinetic mechanism with 314 reactions and 98 species is developed to accurately simulate the fuel injection and combustion processes. The results show that cylinder pressure, cylinder temperature and ITE increased with increasing HEF. Compared with rapeseed Me ester (RME) and cottonseed Me ester (CSME), the cylinder pressures are increased by 16.39% and 16.30% for CSME-6%H2 and RME-6%H2 at 100% load, resp. The cylinder temperatures are increased by 7.42% and 7.14%, and ITE increased by 3.73% and 3.9%, resp. In addition, the HC and CO emissions decreased significantly with the increase in HEF, while NOx emission increased. Compared with pure CSME and RME, HC emissions are reduced by 70.97% and 72.22% for CSME-6%H2 and RME-6% H2, and CO emissions are reduced by 41.89% and 38.12% for CSME-6%H2 and RME-6% H2 at 100% load, resp. Overall, the strategy of using CSME-6% H2 mixed fuel for engine is not only economical and practical, but also can prevent performance loss and reduce emissions.

Energy (Oxford, United Kingdom) published new progress about Biodiesel fuel. 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

Kumari, P. Krishna; Rao, B. Srinivasa; Mallesh, D.; Lingaiah, N. published the artcile< Niobium exchanged tungstophosphoric acid supported on titania catalysts for selective synthesis of 5-ethoxymethylfurfural from fructose>, Application In Synthesis of 112-63-0, the main research area is ethoxymethylfurfural preparation titania support tungstophosphoric acid catalyst property.

Various niobium contained tungstophosphoric acid (NbTPA) supported on titania catalysts were prepared and investigated their activity for selective synthesis of 5-ethoxymethylfurfural (EMF) from fructose in ethanol/THF solvent system. Physico-chem. properties of the catalysts were assessed by different spectroscopic approaches like X-ray diffraction, Laser Raman, BET-surface area, FT-IR, pyridine adsorbed FT-IR and temperature programmed desorption of ammonia. The results of characterization direct the existence of firm Keggin ion structure of Nb exchanged TPA and its well dispersed state on support. Lewis acidic sites were induced with the existence of Nb ions. The catalytic activity was interrelated to the catalyst acidity which was liable on the number of Nb ions present in TPA and the amount of NbxTPA supported on TiO2. Among all catalysts 20wt% Nb0.4TPA/TiO2 catalyst showed best catalytic performance toward EMF with a yield of 76% at 130°C after 6 h. The catalyst is recyclable without any depletion of activity.

Molecular Catalysis published new progress about Acidity. 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