Month: October 2022

Rysak, Vincent; Dixit, Ruchi; Trivelli, Xavier; Merle, Nicolas; Agbossou-Niedercorn, Francine; Vanka, Kumar; Michon, Christophe published the artcile< Catalytic reductive deoxygenation of esters to ethers driven by hydrosilane activation through non-covalent interactions with a fluorinated borate salt>, Safety of Ethyl 3-oxo-3-phenylpropanoate, the main research area is ether preparation; ester catalytic reductive deoxygenation.

The catalytic and transition metal-free reductive deoxygenation of esters to ethers through the use of a hydrosilane and a fluorinated borate BArF salt as a catalyst was reported. Exptl. and theor. studies supported the role of noncovalent interactions between the fluorinated catalyst, the hydrosilane and the ester substrate in the reaction mechanism.

Catalysis Science & Technology published new progress about Deoxidation (reductive). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Safety of Ethyl 3-oxo-3-phenylpropanoate.

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

Gunawan, Steven; Nichol, Gary; Hulme, Christopher published the artcile< Concise route to a series of novel 3-(tetrazol-5-yl)quinoxalin-2(1H)-ones>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is multicomponent reaction Ugi Azide quinoxalinone tetrazole preparation; benzodiazepine tetrazole preparation Ugi azide multicomponent reaction.

This Letter presents a novel three step solution phase protocol to synthesize 3-(tetrazol-5-yl)quinoxalin-2(1H)-ones. The strategy utilizes Et glyoxalate and mono-N-Boc-protected-o-phenylenediamine derivatives in the Ugi-Azide multi-component reaction (MCR) to generate a unique 1,5-disubstituted tetrazole. Subsequent acid treatment stimulates a simultaneous Boc deprotection and intramol. cyclization leading to bis-3,4-dihydroquinoxalinone tetrazoles. Direct oxidation using a stable solid-phase radical catalyst (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) with ceric ammonium nitrate (CAN) in catalytic fashion, initiating aerobic oxidation, completes the entire procedure to generate a series of original unique quinoxalinone tetrazoles, e.g., I. The method was also expanded to produce a benzodiazepine tetrazole, II.

Tetrahedron Letters published new progress about Cyclization. 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

Akiyama, Ryo; Matsuki, Norio; Nomura, Hiroshi; Yoshida, Hisao; Yoshida, Tomoko; Kobayashi, Shu published the artcile< Nontoxic, nonvolatile, and highly efficient osmium catalysts for asymmetric dihydroxylation of alkenes and application to one mol-scale synthesis of an anticancer drug, camptothecin intermediate>, Electric Literature of 112-63-0, the main research area is Sharpless dihydroxylation osmium polymer catalyst prepare.

Novel polymer-incarcerated osmium (PI Os) catalysts have been developed. The osmium (Os) catalysts were shown to be nontoxic and nonvolatile, and stable for several months in air. Asym. dihydroxylation of alkenes using these Os catalysts proceeded smoothly to afford the corresponding diols in high yields with high enantioselectivities. The catalysts could be recovered and reused. A one mol-scale preparation of a key intermediate for camptothecin (anticancer drug, antitumor agent, quinoline alkaloid topoisomerase inhibitor) was successfully demonstrated by using the catalysts. The synthesis of the target compound was achieved using 4-ethyl-8-methoxy-1H-pyrano[3,4-c]pyridine (I) as a starting material and (DHQD)2PYR [(9S,9”S)-9,9”-[(2,5-diphenyl-4,6-pyrimidinediyl)bis(oxy)]bis[(0,11-dihydro-6′-methoxy)cinchonan]] as a ligand. The target compounds thus formed [i.e., (3R,4S)-4-ethyl-3,4-dihydro-8-methoxy-1H-pyrano[3,4-c]pyridine-3,4-diol (II)] was transformed into a camptothecin precursor, (4S)-4-ethyl-1,4-dihydro-4-hydroxy-8-methoxy-3H-pyrano[3,4-c]pyridin-3-one.

RSC Advances published new progress about Aryl alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Jiang, Hong; Zhu, Yuxian; Chen, Zhangliang published the artcile< Insect resistance of transformed tobacco plants with gene of the spider insecticidal peptide>, Formula: C19H34O2, the main research area is tobacco transgenic insecticidal.

Tobacco leaves were transformed with Agrobacterium tumefaciens LBA4404 containing the insecticidal peptide gene. Thirty regenerated kanamycin resistant plants were obtained. Three plants showed stronger toxicity to Heliothis armigera by feeding experiments In comparison with feeding of the control plants, the mortality of the insects fed on transgenic plants were significantly higher and the growth of the survived insects were remarkably retarded. The results of PCR Southern blot and Northern blot showed that the insecticidal peptide gene was transferred into the genome of these three plants and expressed efficiently to confer the insect resistance of the transgenic plants.

Zhiwu Xuebao published new progress about Helicoverpa zea. 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

Xu, Zhongzheng; Li, Lin; Liu, Jiawei; Dai, Caili; Sun, Wen; Chen, Jia; Zhu, Zhixuan; Zhao, Mingwei; Zeng, Hongbo published the artcile< Mussel-inspired superhydrophilic membrane constructed on a hydrophilic polymer network for highly efficient oil/water separation>, COA of Formula: C9H3F5O2, the main research area is polydopamine superhydrophilic membrane oil water separation; Mussel-inspired materials; Oil/water separation; Polymer network; Superhydrophilic surface.

Superhydrophilic/underwater superoleophobic membrane constructed by hydrophilic polymers possesses great advantage in the separation of oily waste water, due to its intrinsic oil-repellent property. The formation of hydration layer to repel and block oil is considered as the mechanism of underwater superoleophobicity and subsequent oil/water separation Constructing a stable hydrophilic polymer network on the substrate surface would significantly improve the robustness of hydration layer. In this work, a feasible and universal mussel-inspired dip-coating method was developed for constructing stable hydrophilic polymer network onto target substrate surface, via successively immersing substrate membranes into aqueous solutions of polydopamine (PDA) and catechol-functionalized hydrophilic polymer (CFHP). After pre-wetting with water, the polymer network would swell with water to form a thin and stable water film layer, serving as a barrier against oil penetration. The as-prepared CFHP/PDA modified membranes exhibit outstanding performance in separating various oil/water mixtures and oil-in-water emulsions stabilized by surfactants, with separation flux up to 5641.1 L路m-2路h-1 and separation efficiency achieving 99.98%. The surface modification method developed in this work can be easily extended to various materials and membrane systems, for achieving a variety of practical applications such as industrial wastewater treatment.

Journal of Colloid and Interface Science published new progress about Contact angle (water). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, COA of Formula: C9H3F5O2.

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

Liu, Xinhua; Wang, Youyou; Wang, Xuechuan; Han, Tengfei; Wang, Wanni; Jiang, Huie published the artcile< A salt-free pickling and chrome-free tanning technology: a sustainable approach for cleaner leather manufacturing>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is salt chrome free pickling tanning clean leather manufacture.

Tannery effluents contain harmful pollutants, such as chromium, total dissolved solids, and neutral salts (chlorides), and hence researchers have focused on eco-benign pickling and tanning processes. Here, a sustainable approach employs a salt-free pickling and chrome-free tanning process for cleaner leather manufacturing Pretreatment with 8% epoxy-terminated hyperbranched poly(amine-ester) (abbreviated as EHBP) before pickling controlled the swelling of the skin in the pickling process, in the absence of conventional neutral salts. Subsequent tanning preferably with a 6% aluminum tanning agent (abbreviated as AL) improved the hydrothermal stability of the resultant crust. It also promoted the subsequent dyeing or fatliquoring in a wet finishing process, as well as ameliorated the yellowing resistance and chem. stability of the tanned leather. This study showed that without compromising on the quality of finished leather, EHBP could ensure a salt-free pickling and chrome-free tanning process and prevent the pollution of tannery effluents (Cl- and Cr3+) with a promising development for large-scale green production

Green Chemistry published new progress about Absorption (aluminum ions). 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

Lee, Hesol; Lee, Sullim; Baek, Ji Yun; Seo, Chang-Seob; Yun, Hwayoung; Kim, Su-Nam; Kang, Ki Sung; Choi, You-Kyung published the artcile< Estrogenic activity of ethyl gallate and its potential use in hormone replacement therapy>, Product Details of C19H34O2, the main research area is ethyl gallate estrogen receptor component hormone replacement therapy; Estrogen receptor; Ethyl gallate; Hormone replacement therapy.

We aimed to compare the estrogenic activities of compounds isolated from Moutan Cortex Radicis (MRC, Paeonia suffruticosa Andrews) and identify their potential use in hormone replacement therapy. We quantified seven marker components (gallic acid, oxypaeoniflorin, paeoniflorin, Et gallate, benzoic acid, benzoylpaeoniflorin, and paeonol) in MRC using a high-performance liquid chromatog. simultaneous anal. assay. To investigate the estrogenic activity of MRC and the seven marker components, an E-screen assay was conducted using the estrogen receptor (ER)-pos. MCF-7 human breast cancer cell line. Among them, Et gallate caused cell proliferation in a concentration-dependent manner at concentrations above 25渭M and was clearly suppressed by combination treatment with the ER antagonist ICI 182,780. Therefore, Et gallate may be a compound of MRC that can increase the estrogenic effect in ER-pos. MCF-7 cells.

Bioorganic & Medicinal Chemistry Letters published new progress about Cell proliferation. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.

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

Zhang, Lihua; Ma, Baiquan; Wang, Changzhi; Chen, Xingyu; Ruan, Yong-Ling; Yuan, Yangyang; Ma, Fengwang; Li, Mingjun published the artcile< MdWRKY126 modulates malate accumulation in apple fruit by regulating cytosolic malate dehydrogenase (MdMDH5)>, Application In Synthesis of 112-63-0, the main research area is MdWRKY126 malate dehydrogenase apple fruit.

The content of organic acids greatly influences the taste and storage life of fleshy fruit. Our current understanding of the mol. mechanism of organic acid accumulation in apple (Malus domestica) fruit focuses on the aluminum-activated malate transporter 9/Ma1 gene. In this study, we identified a candidate gene, MdWRKY126, for controlling fruit acidity independent of Ma1 using homozygous recessive mutants of Ma1, namely Belle de Boskoop “”BSKP”” and Aifeng “”AF.”” Analyses of transgenic apple calli and flesh and tomato (Solanum lycopersicum) fruit demonstrated that MdWRKY126 was substantially associated with malate content. MdWRKY126 was directly bound to the promoter of the cytoplasmic NAD-dependent malate dehydrogenase MdMDH5 and promoted its expression, thereby enhancing the malate content of apple fruit. In MdWRKY126 overexpressing calli, the mRNA levels of malate-associated transporters and proton pump genes also significantly increased, which contributed to the transport of malate accumulated in the cytoplasm to the vacuole. These findings demonstrated that MdWRKY126 regulates malate anabolism in the cytoplasm and coordinates the transport between cytoplasm and vacuole to regulate malate accumulation. Our study provides useful information to improve our understanding of the complex mechanism regulating apple fruit acidity.

Plant Physiology 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

Bayliak, Maria M.; Vatashchuk, Myroslava V.; Gospodaryov, Dmytro V.; Hurza, Viktoria V.; Demianchuk, Oleh I.; Ivanochko, Marian V.; Burdyliuk, Nadia I.; Storey, Kenneth B.; Lushchak, Oleh; Lushchak, Volodymyr I. published the artcile< High fat high fructose diet induces mild oxidative stress and reorganizes intermediary metabolism in male mouse liver: Alpha-ketoglutarate effects>, Application In Synthesis of 112-63-0, the main research area is oxidative stress high fat fructose diet alpha ketoglutarate metabolism; Alpha-ketoglutarate; Antioxidant enzymes; Fructose; Glycolysis; Liver; Oxidative stress.

Diets rich in fats and/or carbohydrates are used to study obesity and related metabolic complications. We studied the effects of a high fat high fructose diet (HFFD) on intermediary metabolism and the development of oxidative stress in mouse liver and tested the ability of alpha-ketoglutarate to prevent HFFD-induced changes. Male mice were fed a standard diet (10% kcal fat) or HFFD (45% kcal fat, 15% kcal fructose) with or without addition of 1% alpha-ketoglutarate (AKG) in drinking water for 8 wk. The HFFD had no effect on body mass but activated fructolysis and glycolysis and induced inflammation and oxidative stress with a concomitant increase in activity of antioxidant enzymes in the mouse liver. HFFD-fed mice also showed lower mRNA levels of pyruvate dehydrogenase kinase 4 (PDK4) and slightly increased intensity of mitochondrial respiration in liver compared to mice on the standard diet. No significant effects of HFFD on transcription of PDK2 and PGC1ä¼? a peroxisome proliferator-activated receptor co-activator-1ä¼? or protein levels of p-AMPK, an active form of AMP-activated protein kinase, were found. The addition of AKG to HFFD decreased oxidized glutathione levels, did not affect levels of lipid peroxides and PDK4 transcripts but increased activities of hexokinase and phosphofructokinase in mouse liver. Supplementation with AKG had weak modulating effects on HFFD-induced oxidative stress and changes in energetics in mouse liver. Our research expands the understanding of diet-induced metabolic switching and elucidates further roles of alpha-ketoglutarate as a metabolic regulator.

Biochimica et Biophysica Acta, General Subjects published new progress about Antioxidant enzymes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Wang, Shengzheng; Fang, Kun; Dong, Guoqiang; Chen, Shuqiang; Liu, Na; Miao, Zhenyuan; Yao, Jianzhong; Li, Jian; Zhang, Wannian; Sheng, Chunquan published the artcile< Scaffold diversity inspired by the natural product evodiamine: discovery of highly potent and multitargeting antitumor agents>, Recommanded Product: Ethyl 3-amino-1H-pyrrole-2-carboxylate, the main research area is evodiamine scaffold antitumor neoplasm.

A critical question in natural product-based drug discovery is how to translate the product into drug-like mols. with optimal pharmacol. properties. The generation of natural product-inspired scaffold diversity is an effective but challenging strategy to investigate the broader chem. space and identify promising drug leads. Extending the efforts to the natural product evodiamine, a diverse library containing 11 evodiamine-inspired novel scaffolds and their derivatives were designed and synthesized. Most of them showed good to excellent antitumor activity against various human cancer cell lines. In particular, 3-chloro-10-hydroxyl thio-evodiamine I showed excellent in vitro and in vivo antitumor efficacy with good tolerability and low toxicity. Antitumor mechanism and target profiling studies indicate that compound I is the first-in-class triple topoisomerase I/topoisomerase II/tubulin inhibitor. Overall, this study provided an effective strategy for natural product-based drug discovery.

Journal of Medicinal Chemistry published new progress about Antitumor agents. 252932-48-2 belongs to class esters-buliding-blocks, and the molecular formula is C7H10N2O2, Recommanded Product: Ethyl 3-amino-1H-pyrrole-2-carboxylate.

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