Category: esters-buliding-blocks

Gomez, Javier Chavarro; Zakaria, Rabitah; Aung, Min Min; Mokhtar, Mohd Noriznan; Yunus, Robiah published the artcile< Synthesis and Characterization of Polyurethanes from Residual Palm Oil with High Poly-Unsaturated Fatty Acid Oils as Additive>, Application In Synthesis of 112-63-0, the main research area is palm oil polyurethane synthesis polyunsaturated fatty acid additive characterization; algae oil; bio-based polyurethanes; jatropha oil; recovered palm oil.

In the effort to produce renewable and biodegradable polymers, more studies are being undertaken to explore environmentally friendly sources to replace petroleum-based sources. The oil palm industry is not only the biggest vegetable-oil producer from crops but also one the biggest producers of residual oil that cannot be used for edible purposes due to its low quality. In this paper the development of biopolymers from residual palm oil, residual palm oil with 10% jatropha oil, and residual palm oil with 10% algae oil as additives were explored. Polyols from the different oils were prepared by epoxidation with peroxyacetic acid and alcoholysis under the same conditions and further reacted with polyisocyanate to form polyurethanes. Epoxidized oils, polyols and polyurethanes were analyzed by different techniques such as TGA, DSC, DMA, FTIR and H-NMR. Overall, although the IV of algae oil is slightly higher than that of jatropha oil, the usage of algae oil as additive into the residual palm oil was shown to significantly increase the hard segments and thermal stability of the bio polyurethane compared to the polymer with jatropha oil. Furthermore, when algae oil was mixed with the residual palm oil, it was possible to identify phosphate groups in the polyol which might enhance the fire-retardant properties of the final biopolymer.

Polymers (Basel, Switzerland) published new progress about Acid number. 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

Grillet, Pierre-Edouard; Badiou, Stephanie; Lambert, Karen; Sutra, Thibault; Plawecki, Maelle; Raynaud de Mauverger, Eric; Brun, Jean-Frederic; Mercier, Jacques; Gouzi, Fares; Cristol, Jean-Paul published the artcile< Biomarkers of Redox Balance Adjusted to Exercise Intensity as a Useful Tool to Identify Patients at Risk of Muscle Disease through Exercise Test>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is risk assessment exercise intensity muscle disease; Liquid Chromatography tandem Mass Spectrometry (LC-MS/MS); cardiopulmonary exercise test (CPET); exercise intolerance; maximal oxygen uptake; metabolomics; myopathy; tricarboxylic citric acid cycle.

The screening of skeletal muscle diseases constitutes an unresolved challenge. Currently, exercise tests or plasmatic tests alone have shown limited performance in the screening of subjects with an increased risk of muscle oxidative metabolism impairment. Intensity-adjusted energy substrate levels of lactate (La), pyruvate (Pyr), β-hydroxybutyrate (BOH) and acetoacetate (AA) during a cardiopulmonary exercise test (CPET) could constitute alternative valid biomarkers to select “”at-risk”” patients, requiring the gold-standard diagnosis procedure through muscle biopsy. Thus, we aimed to test: (1) the validity of the V’O2-adjusted La, Pyr, BOH and AA during a CPET for the assessment of the muscle oxidative metabolism (exercise and mitochondrial respiration parameters); and (2) the discriminative value of the V’O2-adjusted energy and redox markers, as well as five other V’O2-adjusted TCA cycle-related metabolites, between healthy subjects, subjects with muscle complaints and muscle disease patients. Two hundred and thirty subjects with muscle complaints without diagnosis, nine patients with a diagnosed muscle disease and ten healthy subjects performed a CPET with blood assessments at rest, at the estimated 1st ventilatory threshold and at the maximal intensity. Twelve subjects with muscle complaints presenting a severe alteration of their profile underwent a muscle biopsy. The V’O2-adjusted plasma levels of La, Pyr, BOH and AA, and their resp. ratios showed significant correlations with functional and muscle fiber mitochondrial respiration parameters. Differences in exercise V’O2-adjusted La/Pyr, BOH, AA and BOH/AA were observed between healthy subjects, subjects with muscle complaints without diagnosis and muscle disease patients. The energy substrate and redox blood profile of complaining subjects with severe exercise intolerance matched the blood profile of muscle disease patients. Adding five tricarboxylic acid cycle intermediates did not improve the discriminative value of the intensity-adjusted energy and redox markers. The V’O2-adjusted La, Pyr, BOH, AA and their resp. ratios constitute valid muscle biomarkers that reveal similar blunted adaptations in muscle disease patients and in subjects with muscle complaints and severe exercise intolerance. A targeted metabolomic approach to improve the screening of at-risk patients is discussed.

Nutrients published new progress about Biopsy. 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

Zhao, Yi; Wang, Huiyun; Yin, Yanyan; Shi, Haoyu; Wang, Dong; Shu, Fengjue; Wang, Rongchun; Wang, Lingzhi published the artcile< Anti-melanoma action of small molecular peptides derived from Brucea javanica(L.)Merr. globulin in vitro>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is dacarbazine anticancer agent Brucea malignant melanoma.

The morbidity of malignant melanoma keeps increasing annually. It has high risks of metastasis, drug resistance, and poor prognosis in clinics. Moreover, the available medicines used commonly, such as dacarbazine, temozolomide, the v-Raf murine sarcoma viral oncogene homolog B1 (BRAF) inhibitor vemurafenib, and the programmed cell death protein 1 inhibitor pembrolizumab, have some limitations at some extent. Therefore, a more effective therapeutic strategy is still urgently necessary. In Brucea javanica(L.)Merr globulins were hydrolyzed with pepsin, then ultra-filtrated to collect small mol. peptides (≤3 kDa). The peptides were then analyzed by anti-proliferative assay, cell-cycle distribution, apoptosis assay, and in vitro wound-scratch assay. Finally, western blotting was conducted to elucidate the underlying anti-melanoma mechanism. The small mol. peptid from B. javanica significantly inhibited malignant melanoma cell proliferation with the IC50 of 2.72 μg/mL for 72 h. Further anal. indicated that B. javanica peptides arrested cell cycle at the S and G2/M phases and induced apoptosis by upregulating p21, p53, Bax, caspase-3, and cleaved PARP while downregulating Bcl-2 expression. The inhibitory migration effects were also confirmed by wound-healing assay. The small mol. biopeptides from B. javanica may be a promising bioactive agent candidate for melanoma treatment.

Journal of Traditional Chinese Medical Sciences published new progress about Antitumor 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

Liu, Qian-Bao; Lu, Jing-Guang; Jiang, Zhi-Hong; Zhang, Wei; Li, Wen-Jia; Qian, Zheng-Ming; Bai, Li-Ping published the artcile< In situ chemical profiling and imaging of cultured and natural Cordyceps sinensis by TOF-SIMS>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Cordyceps fatty acid imaging secondary ion mass spectrometry; Cordyceps sinensis; chemical imaging; in situ analysis; time-of-flight secondary ion mass spectrometry; traditional Chinese medicines.

Time-of-flight secondary ion mass spectrometry (TOF-SIMS) is a sensitive surface anal. technol., which can simultaneously acquire diverse chem. components and their precise locations on the surfaces of samples without any requirements for chem. damage pretreatments or addnl. matrixes. Commonly, the quality control of TCMs (traditional Chinese medicines) is limited by the qual. and quant. evaluations of the specifically extractive constituents. In this study, a practical sample preparation strategy named two-layered media embedding sample preparation was developed to obtain ideal freezing sections of dried materials of Cordyceps sinensis. Meanwhile, the well-established sample preparation method was applied for in situ chem. profiling and imaging of natural (NCS) and cultured Cordyceps sinensis (CCS) by using TOF-SIMS. More than 200 components were tentatively identified and imaged in NCS and CCS at the same time. Mass spectrometry imaging revealed that most components have even distributions in caterpillars of Cordyceps sinensis, while TAGs, DAGs, MAGs, and FAs only have distributions outside caterpillars′ digestive chambers. This is the first time that components were in situ imaged for Cordyceps sinensis to exhibit the chem. distributions which have never been achieved by other anal. techniques so far. In addition, chemometrics was used to simplify and explain the massive TOF-SIMS mass data sets, which revealed the high chem. similarity between CCS and NCS. Furthermore, the relative quantification of TOF-SIMS data showed that CCS has comparable proportions of amino acids, nucleosides, monosaccharides, sphingolipids, sterols and other principles to NCS except for fatty acids, glycerides and glycerophospholipids. The higher amounts of TAGs and DAGs in CCS were confirmed by quant. 1H-NMR, indicating reliable relative quantification of TOF-SIMS. In general, our research developed a novel approach of TOF-SIMS for in situ chem. anal. of TCMs, and its successful application in comparative study of CCS and NCS suggested that TOF-SIMS is an advanced and promising anal. technol. for the research of TCMs.

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about Amino acids Role: ANT (Analyte), BSU (Biological Study, Unclassified), ANST (Analytical Study), BIOL (Biological Study). 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

Obata, Makoto; Masuda, Satoshi; Takahashi, Masaki; Yazaki, Kohei; Hirohara, Shiho published the artcile< Effect of the hydrophobic segment of an amphiphilic block copolymer on micelle formation, zinc phthalocyanine loading, and photodynamic activity>, Electric Literature of 71195-85-2, the main research area is zinc phthalocyanine amphiphilic block copolymer mieclle photodynamic therapy.

A series of amphiphilic block copolymers, i.e., poly(N-substituted acrylamide)-block-poly(polyethylene glycol monomethyl ether acrylate) (P(R)-b-PPEGA) were prepared via RAFT polymerization and post-polymerization modification, and the formation of polymeric micelles as zinc(II) phthalocyanine (ZnPc) carriers for photodynamic therapy was investigated. The effect of hydrophobic R groups at the hydrophobic segment of the block copolymer on critical micelle concentration, hydrodynamic diameters ZnPc-loading ability, and in vitro photocytotoxicity of the polymer micelles was examined The hydrodynamic diameters of the polymer micelles were insensitive to R groups and falls in a narrow range between 23 and 25 nm, whereas those of the ZnPc-loaded micelles vary from 167 to 230 nm depending on the R groups. The Q bands in UV-vis spectra of the ZnPc-loaded micelles indicate that the presence of aromatic R groups results in loose ZnPc aggregates, whereas those containing aliphatic R groups are well packed. The photodynamic effect examined in RGK-1 cell lines was also dependent on the R groups; ZnPc-loaded micelles having aromatic R groups exert higher photodynamic effect than those with aliphatic R groups. These findings indicate that aromatic R groups form larger polymeric micelles with loosely packed ZnPc aggregates, leading to enhanced release of ZnPc in cellular environment and therefore higher photodynamic effect.

European Polymer Journal published new progress about Critical micelle concentration. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Electric Literature of 71195-85-2.

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

Mohammad, Shabbair; Dhambri, Sabrina; Gori, Didier; Vaxelaire, Carine; Sorin, Geoffroy; Ardisson, Janick; Lannou, Marie-Isabelle published the artcile< Asymmetric Sharpless dihydroxylation reaction of chiral bishomoallylic alcohols: Application to the synthesis of the C1-C10-C5 fragment of FR225654>, Computed Properties of 112-63-0, the main research area is asym Sharpless dihydroxylation chiral bishomoallylic alc pyrimidine ligand.

Toward the synthesis of FR225654, an antidiabetic natural product, the Sharpless asym. dihydroxylation of chiral bishomoallylic alcs., never reported in the literature, was examined Employing the pyrimidine class of ligands, a high level of matched diastereoselectivity was obtained. An application to the stereoselective synthesis of the C1-C10-C5 fragment I of FR225654 was performed.

Synlett published new progress about Alcohols, chiral Role: RCT (Reactant), RACT (Reactant or Reagent) (bishomoallylic). 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

Yu, Mei-xiang; Lei, Bo; Song, Xin; Huang, Yong-mei; Ma, Xiao-qin; Hao, Chen-xia; Yang, Wan-hua; Pan, Man-li published the artcile< Compound XiongShao Capsule ameliorates streptozotocin-induced diabetic peripheral neuropathy in rats via inhibiting apoptosis, oxidative - nitrosative stress and advanced glycation end products>, Electric Literature of 112-63-0, the main research area is compound XiongShao capsule plant extract neuroprotective agent apoptosis; nitroxidative stress diabetic peripheral neuropathy; Advanced glycation end products; BAX/BCL2–caspase-3; Compound XiongShao Capsule; Diabetic peripheral neuropathy; Oxidative – nitrosative stress.

Compound XiongShao Capsule (CXSC), a traditional herb formula, has been approved for using to treat diabetic peripheral neuropathy (DPN) by the Shanghai Food and Drug Administration, with significant efficacy in clinic. This study aimed to investigate the multidimensional pharmacol. mechanisms and synergism of CXSC against DPN in rats. The quality anal. of CXSC was performed by high-performance liquid chromatog. (HPLC) and thin-layer chromatog. Rats with DPNinduced by streptozotocin/high-fat diet for 4 wk were treated with CXSC at three doses (1.2 g/kg, 0.36 g/kg, and 0.12 g/kg), or epalrestat (15 mg/kg) daily for 8 wk continuously. During the treatment period, body weight, serum glucose levels, and nerve function, including nerve conduction velocity (NCV), and mech. and thermal hyperalgesia were tested and assessed every 4 wk. In the 13th week, the histopathol. examination in the sciatic nerve was performed using a transmission electron microscope. The expression of apoptosis-related proteins of BAX, BCL2, and caspase-3 in the sciatic nerve was examined using hematoxylin and eosin staining. The serum levels of advanced glycation end products (AGEs), oxidative-nitrosative stress biomarkers of superoxide dismutase (SOD), and nitric oxide synthase (NOS) were measured using a rat-specific ELISA kit. CXSC had no significant effect on body weight or serum glucose levels (P > 0.05), but it significantly improved mech. hyperalgesia (F5,36 = 18.24, P < 0.0001), thermal hyperalgesia (F5,36 = 8.45, P < 0.0001), and NCV (motor NCV: F5,36 = 7.644, P < 0.0001, sensory NCV: F5,36 = 12.83, P < 0.0001). Besides, it maintained myelin and axonal structure integrity, downregulated the expression of apoptosis-related proteins in the sciatic nerve tissue, reduced AGEs and NOS levels, and enhanced antioxidant enzyme SOD activities in the serum. CXSC exerted neuroprotective effects against rats with DPN through multidimensional pharmacol. mechanisms including antiapoptotic activity in the sciatic nerve and downregulation of the level of serum NOS, SOD and AGEs. Journal of Ethnopharmacology published new progress about Advanced glycosylation end products 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

Beija, Mariana; Li, Yang; Lowe, Andrew B.; Davis, Thomas P.; Boyer, Cyrille published the artcile< Factors influencing the synthesis and the post-modification of PEGylated pentafluorophenyl acrylate containing copolymers>, Safety of Perfluorophenyl acrylate, the main research area is PEGylated pentafluorophenyl acrylate copolymer RAFT polymerization reaction condition influence.

Copolymerization reactions involving oligoethylene glycol acrylate (OEGA) or diethylene glycol acrylate (DEGA) with pentafluorophenyl acrylate (PFPA) were performed by reversible addition fragmentation transfer (RAFT) polymerization The effect of the reaction conditions on the nucleophilic acyl substitution reactions of PFPA was studied using a model amine (furfuryl amine). The resulting PEG/PFP functional copolymers were then used as scaffolds to produce a library of polymers by reaction with a range of amines.

European Polymer Journal published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Safety of Perfluorophenyl acrylate.

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

Shalmani, Armin Azadkhah; Ghahremani, Mohammad Hossein; Jeivad, Fereshteh; Shadboorestan, Amir; Hassanzadeh, Gholamreza; Beh-Pajooh, Abbas; Ganbari-Erdi, Mikhriy; Kasirzadeh, Sara; Mojtahedzadeh, Mojtaba; Sabzevari, Omid published the artcile< Monomethyl fumarate alleviates sepsis-induced hepatic dysfunction by regulating TLR-4/NF-κB signalling pathway>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is sepsis hepatic dysfunction monomethyl fumarate TLR 4 NF kappaB; Hepatic impairment; Monomethyl fumarate; NF-κB; Sepsis; TLR-4.

Sepsis is a potentially fatal illness that can lead to impairment of multiple organs such as liver. The condition is deeply associated with oxidative stress and inflammation. The aim of current study was to evaluate protective effects of MMF in sepsis-induced hepatic dysfunction. Wistar rats were assigned to one of sham, CLP, CLP + dexamethasone (as pos. control of inflammation) and CLP + MMF groups. Levels of serum IL-1β, IL-6, IL-10, AST, ALT and γ-GT were quantified. Furthermore, Hepatic levels of GSH and MDA and mRNA expression of TNF and NFKBIA along with hepatic protein level of TLR-4 were assessed. Septic rats demonstrated risen levels of IL-1β, IL-6, IL-10, AST, ALT and γ-GT, while treatment with dexamethasone or MMF attenuated these levels. Moreover, enhancements in protein level of TLR-4 and mRNA levels of TNF and NFKBIA were observed in CLP rats. These elevations were mitigated in CLP-induced rats that were treated with either dexamethasone or MMF. Treatment with dexamethasone or MMF also shifted sepsis-induced disturbance in the levels of GSH and MDA towards sham levels. Hepato-protective effects of dexamethasone and MMF were further confirmed by histopathol. observations. Our findings imply that MMF alleviates sepsis-induced hepatic dysfunction by mitigating the inflammatory and oxidative state and this effect is at least partly mediated by the inhibition of TLR-4/NF-κB signalling pathway.

Life Sciences published new progress about Antioxidants. 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

Lagemann, Annika; Dunkel, Andreas; Hofmann, Thomas published the artcile< Activity-Guided Discovery of (S)-Malic Acid 1'-O-β-Gentiobioside as an Angiotensin I-Converting Enzyme Inhibitor in Lettuce (Lactuca sativa)>, Formula: C6H10O5, the main research area is Lactuca malic acid gentiobioside natural antihypertensive ACE inhibitor.

Angiotensin-converting enzyme (ACE), playing a crucial role in the renin angiotensin aldosterone system, is well-known to catalyze the conversion of the decapeptide angiotensin I into the physiol. active octapeptide angiotensin II, triggering blood pressure increasing mechanisms. To meet the demand for natural phytochems. as antihypertensive agents in functional food development, extracts prepared from a series of vegetables were screened for their ACE-inhibitory activity by means of a LC-MS/MS-based in vitro assay. By far the highest ACE inhibition was found for a lettuce extract, in which the most active compound was located by means of activity-guided fractionation. LC-MS, NMR spectroscopy, and hydrolysis experiments followed by ion chromatog. led to the unequivocal identification of the ACE inhibitor as the previously not reported (S)-malic acid 1′-O-β-gentiobioside. This glycoside represents a novel class of ACE-inhibiting phytochems. with a low IC50 value of 27.8 μM. First incubation experiments in saliva and aqueous hydrochloric acid demonstrated the stability of (S)-malic acid 1′-O-β-gentiobioside against salivary glycosidases and stomach acid.

Journal of Agricultural and Food Chemistry published new progress about Angiotensin-converting enzyme inhibitors. 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Formula: C6H10O5.

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