Month: September 2022

Van Nguyen, Kieu;Duong, Thuc-Huy;Nguyen, Kim Phi Phung;Sangvichien, Ek;Wonganan, Piyanuch;Chavasiri, Warinthorn published 《Chemical constituents of the lichen Usnea baileyi (Stirt.) Zahlbr》. The research results were published in《Tetrahedron Letters》 in 2018.Computed Properties of C10H12O4 The article conveys some information:

An investigation of the chem. constituents of the lichen U. baileyi (Stirt.) Zahlbr led to the isolation of a new dimeric xanthone, bailexanthone (1), and a novel depsidone, bailesidone (2), along with 25 known metabolites (3-27). Their structures were established by means of extensive spectroscopic anal. and comparison with data reported in the literatures. Compound 1 was derived from a secalonic acid scaffold with C-8/8′ reduction and compound 2 represents the 1st example of menegazziaic acid derivative with an unprecedented B-ring moiety. Compounds 1 and 2 were evaluated for their cytotoxic activities against A549 (human lung carcinoma) and HT29 (human colorectal adenocarcinoma) cell lines. The compounds showed weak or no activity against the 2 cell lines. To complete the study, the researchers used Methyl 2,4-dihydroxy-3,6-dimethylbenzoate (cas: 4707-47-5) .

Methyl 2,4-dihydroxy-3,6-dimethylbenzoate(4707-47-5) is used in biological study as role of androgens in inducing distinct response of epithelial-mesenchymal transition factors in human prostate cancer cells.Computed Properties of C10H12O4

Reference:
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Ji, Peng;Li, Chen-chen;Wei, Yan-ming;Hua, Yong-li;Yao, Wan-ling;Wu, Fan-lin;Zhang, Xiao-song;Yuan, Zi-wen;Zhao, Nian-shou;Zhang, Ya-hui;Wen, Yan-qiao published 《A new method providing complementary explanation of the blood-enriching function and mechanism of unprocessed Angelica sinensis and its four kinds of processed products based on tissue-integrated metabolomics and confirmatory analysis》 in 2022. The article was appeared in 《Biomedical Chromatography》. They have made some progress in their research.Product Details of 112-62-9 The article mentions the following:

Angelica sinensis (AS) is a common Traditional Chinese Medicine used for tonifying blood in China. Unprocessed AS and its four kinds of processed products (ASs) are used to treat blood deficiency syndrome in the country. The different blood-tonifying mechanisms of ASs remain unclear. In this work, a novel method integrating metabolomics and hematol. and biochem. parameters was established to provide a complementary explanation of blood supplementation mechanism of ASs. Our results revealed that different ASs exhibited various blood supplementation effect, and that AS parched with alc. demonstrated the best blood supplementation effect. Eight metabolites from liver tissue and 12 metabolites from spleen tissue were considered to be potential biomarkers. These biomarkers were involved in four metabolic pathways. Correlation anal. results showed that L-aspartic acid and L-alanine (spleen tissue), linoleic acid, and L-cystathionine (liver tissue) exhibited a high pos. or neg. correlation with the aforesaid biochem. indicators. The blood-supplementation effect mechanism of ASs were related to four metabolic pathways. L-Aspartic acid and L-alanine (spleen tissue), linoleic acid, and L-cystathionine (liver tissue) were the four key metabolites associated with the blood supplementation effect of ASs. This study gives a complementary explanation of the blood supplementation effect and mechanism of action of ASs. The experimental procedure involved many compounds, such as Methyl oleate (cas: 112-62-9) .

Methyl oleate(cas: 112-62-9) is a fatty acid methyl ester resulting from the formal condensation of the carboxy group of oleic acid with methanol.Product Details of 112-62-9 It is also used in biochemical research as a chromatographic reference standard.

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

Quality Control of Oxacyclohexadecan-2-one《Highly selective macrocyclic ring-closing metathesis of terminal olefins in non-chlorinated solvents at low dilution》 was published in 2019. The authors were Dumas, Adrien;Colombel-Rouen, Sophie;Curbet, Idriss;Forcher, Gwenael;Tripoteau, Fabien;Caijo, Frederic;Queval, Pierre;Rouen, Mathieu;Basle, Olivier;Mauduit, Marc, and the article was included in《Catalysis Science & Technology》. The author mentioned the following in the article:

Bis(cycloalkylarylimidazolylidene)ruthenium indenylidene complexes were prepared as catalysts for ring-closing metatheses of dienes to yield macrocycles, particularly macrocyclic lactone odorants, without isomerization and without using chlorinated solvents. Ring-closing metatheses were performed in EtOAc at 0.01 M substrate concentrations without requiring 1,4-benzoquinone to suppress isomerization. Macrocyclic odorant mols. were prepared in >99% purities by this method. And Oxacyclohexadecan-2-one (cas: 106-02-5) was used in the research process.

Oxacyclohexadecan-2-one(cas:106-02-5) is a monomer used to make PGA-co-pentadecalactone polymers to be used in the development of directly compressed prolonged release tablets of slightly soluble drugs such as ketoprofen.Quality Control of Oxacyclohexadecan-2-oneIt may be used for the synthesis of poly(pentadecanolide) (PPDL) by Novozyme 435 catalyzed ring-opening polymerization.

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

Sreedharan, Ramdas;Rajeshwaran, Purushothaman;Panyam, Pradeep Kumar Reddy;Yadav, Saurabh;Nagaraja, C. M.;Gandhi, Thirumanavelan published 《Acylation of oxindoles using methyl/phenyl esters via the mixed Claisen condensation-an access to 3-alkylideneoxindoles》 in 2020. The article was appeared in 《Organic & Biomolecular Chemistry》. They have made some progress in their research.COA of Formula: C9H10O2 The article mentions the following:

Herein, simple acyl sources, viz. Me and Ph esters, which acylate oxindoles via the mixed Claisen condensation are reported. This straightforward protocol is mediated by LiHMDS and KO^tBu and successfully applied to a wide range of substrates. It is a noteworthy transformation that skips the stepwise generation of enolates and acylation, and the reaction is performed at a moderate temperature with no side reactions. This protocol produces the first examples of ortho-substituents in an aryl ring flanked with electron-donating and electron-withdrawing substrates. Interestingly, robust organometallic ferrocenyl Me ester cleaved under these conditions with ease. Furthermore, biol. important Tenidap’s analog was synthesized by this protocol. The experimental procedure involved many compounds, such as Methyl 3-methylbenzoate (cas: 99-36-5) .

Methyl 3-methylbenzoate (cas: 99-36-5) is a common ester. Esters are widespread in nature and are widely used in industry. Several billion kilograms of polyesters are produced industrially annually, important products being polyethylene terephthalate, acrylate esters, and cellulose acetate.COA of Formula: C9H10O2

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

Gandhi, Arumugam Dhanesh;Miraclin, Prasanna A.;Abilash, Doraiah;Sathiyaraj, Sivaji;Velmurugan, Rajendran;Zhang, Yang;Soontarapa, Khantong;Sen, Priyankar;Sridharan, T. B. published 《Nanosilver reinforced Parmelia sulcata extract efficiently induces apoptosis and inhibits proliferative signalling in MCF-7 cells》. The research results were published in《Environmental Research》 in 2021.Safety of Methyl 2,4-dihydroxy-3,6-dimethylbenzoate The article conveys some information:

The Lichen, Parmelia sulcata synthesizes various secondary metabolites, in which phenolic based compounds received much attention due to their importance in biomedical application. Especially the phenolic compound was effective against the cancer treatment. An effective administration of such plant natural product can represent a significant conventional management of cancer in terms of chemoprevention. The nanomedicines are group of agents that selectively interfere the cancer cells which leads to reduction of side effect thereby reducing the doses. Silver nanoparticles is a promising antitumor agent, however, the conventional production of silver nanoparticles have many drawbacks which led to increase in need of eco-friendly biol. production methods. In this study, we made an attempt to synthesize a nano silver (Ps-AgNPs) from phenolic extract of lichen Parmelia sulcata extract The Ps-AgNps was applied for anticancer activity using MCF-7 cells and the effect was characterised by western blotting method. The FTIR, XRD, UV and TEM results confirms the presence of silver nanoparticles in phenolic extract of lichen Parmelia sulcata. The cytotoxicity assay shows that the Ps-AgNPs is toxic against cancer cells (MCF-7) but not to normal cells (NIH3T3), which confirm the selective induction of cell death (apoptosis) against cancer cells. The Western blot anal. also clearly indicates the down regulation of inflammatory genes (TNF-alpha and IL-6) and cell cycle genes (PCNA and Cyclin-D1) thus promoting intrinsic apoptotic pathway. The results suggest that Ps-AgNPs can effectively kill cancer cells and can be used as an alternative therapeutic agent for cancer treatment. To complete the study, the researchers used Methyl 2,4-dihydroxy-3,6-dimethylbenzoate (cas: 4707-47-5) .

Methyl 2,4-dihydroxy-3,6-dimethylbenzoate(4707-47-5) is used in biological study as role of androgens in inducing distinct response of epithelial-mesenchymal transition factors in human prostate cancer cells.Safety of Methyl 2,4-dihydroxy-3,6-dimethylbenzoate

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

Recommanded Product: Methyl oleate《Thermo-physical properties of naphthenic-palm oil methyl ester (POME) blended transformer oil》 was published in 2022. The authors were Walvekar, Rashmi;Zairin, Danial Aminin;Khalid, Mohammad;Mubarak, Nabisab Mujawar;Tcsm, Gupta, and the article was included in《Journal of Thermal Analysis and Calorimetry》. The author mentioned the following in the article:

This study aims to investigate the thermal conductivity, viscosity and thermal degradation of naphthenic-based mineral oil, palm oil Me ester (POME) and its blend. Mineral oil and POME were mixed at various mass ratios (70:30, 80:20 and 90:10) via homogenisation for 10 min at 25,000 RPM. The thermo-phys. properties of oil studied were thermal conductivity, viscosity, d., flash point and thermal degradation Results indicated enhancement in thermal conductivity with an increase in temperature The highest enhancement (0.185 W mK^-1) was observed for the 70:30 blend ratio at 80°C. The viscosity decreased as temperature increased, whereby POME resulted in lower values (2.3 mPa.s) than mineral oil (4.3 mPa.s) at 80°C. D. also showed a decreasing trend with temperature with no significant difference between POME and mineral oil. However, POME (175.5°C) resulted in a higher flash point compared to mineral oil (146.5°C), resulting in the enhanced flashpoint of blend oils. Blend oil with a 70:30 ratio resulted in the highest thermal degradation of 274.56°C in the air environment. Oxidation induction time (OIT) decreased with temperature from 160-180°C where mineral oil resulted in higher induction time than POME. The results proved improvement in properties of mineral oil blend with POME, which can enhance the system performance and faster heat dissipation. And Methyl oleate (cas: 112-62-9) was used in the research process.

Methyl oleate(cas: 112-62-9) is a fatty acid methyl ester resulting from the formal condensation of the carboxy group of oleic acid with methanol.Recommanded Product: Methyl oleate Methyl oleate(cas: 112-62-9) is an intermediate for detergents, emulsifiers, wetting agents, stabilizers, textile treatments, plasticizers for duplicating inks, rubbers, waxes etc.

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

Feng, Xionghan;Yan, Yupeng;Wan, Biao;Li, Wei;Jaisi, Deb P.;Zheng, Lirong;Zhang, Jing;Liu, Fan published 《Enhanced Dissolution and Transformation of ZnO Nanoparticles: The Role of Inositol Hexakisphosphate》. The research results were published in《Environmental Science & Technology》 in 2016.Name: rel-(1R,2r,3S,4R,5s,6S)-Cyclohexane-1,2,3,4,5,6-hexayl hexakis(dihydrogen phosphate), dipotassium salt The article conveys some information:

The toxicity, reactivity, and behavior of ZnO nanoparticles (NPs) released in the environment highly depend on environmental conditions. Myo-inositol hexakisphosphate (IHP), a common organic phosphate, may interact with NPs and generate new transformation products. Here, the role of IHP in mediating the dissolution and transformation of ZnO NPs was studied in the laboratory kinetic experiments using powder x-ray diffraction, attenuated total reflectance FTIR spectroscopy, ³¹P NMR spectroscopy, high-resolution transmission electronic microscopy, and synchrotron-based extended x-ray absorption fine structure spectroscopy. The results indicate that IHP shows a dissolution-precipitation effect, which is different from citrate and EDTA that only enhances Zn dissolution The enhanced dissolution and transformation of ZnO NPs by IHP (<0.5 h) is strikingly faster than that induced by inorganic phosphate (Pi, >3.0 h) at pH 7.0, and the reaction rate increases with decreasing pH and increasing IHP concentration Multitechnique analyses reveal that interaction of ZnO NPs with IHP induces rapid transformation of ZnO NPs into Zn phytate complexes initially and poorly crystalline Zn phytate-like (Zn-IHP) phase finally. ZnO NPs preferentially react with IHP and transform to Zn-IHP when Pi and IHP concurrently coexist in a system. Overall, results from this study contribute to an improved understanding of the role of organic phosphates (e.g., IHP) in the speciation and structural transformation of ZnO NPs, which can be leveraged for remediation of ZnO-polluted water and soils. The experimental procedure involved many compounds, such as rel-(1R,2r,3S,4R,5s,6S)-Cyclohexane-1,2,3,4,5,6-hexayl hexakis(dihydrogen phosphate), dipotassium salt (cas: 129832-03-7) .

rel-(1R,2r,3S,4R,5s,6S)-Cyclohexane-1,2,3,4,5,6-hexayl hexakis(dihydrogen phosphate), dipotassium salt (cas:129832-03-7) is also known as Inositol hexakisphosphate. Phytic acid dipotassium salt is a potent chelator of divalent and trivalent cations, and a major determinant of zinc bioavailability.Name: rel-(1R,2r,3S,4R,5s,6S)-Cyclohexane-1,2,3,4,5,6-hexayl hexakis(dihydrogen phosphate), dipotassium salt

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

Leon-Aparicio, Daniel;Sanchez-Solano, Alfredo;Arreola, Jorge;Perez-Cornejo, Patricia published 《Oleic acid blocks the calcium-activated chloride channel TMEM16A/ANO1》. The research results were published in《Biochimica et Biophysica Acta, Molecular and Cell Biology of Lipids》 in 2022.Synthetic Route of C19H36O2 The article conveys some information:

The calcium-activated chloride channel TMEM16A (ANO1) supports the passive movement of chloride ions across membranes and controls critical cell functions. Here we study the block of wild-type and mutant TMEM16A channels expressed in HEK293 cells by oleic acid, a monounsaturated omega-9 fatty acid beneficial for cardiovascular health. We found that oleic acid irreversibly blocks TMEM16A in a dose- and voltage-dependent manner at low intracellular Ca2+. We tested whether oleic acid interacted with the TMEM16A pore, varying the permeant anion concentration and mutating pore residues. Lowering the permeating anion concentration in the intracellular side did nothing but the blockade was intensified by increasing the anion concentration in the extracellular side. However, the blockade of the pore mutants E633A and I641A was voltage-independent, and the I641A IC50, a mutant with the inner hydrophobic gate in disarray, increased 16-fold. Furthermore, the uncharged methyl-oleate blocked 20-24% of the wild-type and I641A channels regardless of voltage. Our findings suggest that oleic acid inhibits TMEM16A by an allosteric mechanism after the elec. field drives oleic acid’s charged moiety inside the pore. Block of TMEM16A might be why oleic acid has a beneficial impact on the cardiovascular system. The experimental procedure involved many compounds, such as Methyl oleate (cas: 112-62-9) .

Methyl oleate(cas: 112-62-9) is a fatty acid methyl ester resulting from the formal condensation of the carboxy group of oleic acid with methanol.Synthetic Route of C19H36O2 It is also used in biochemical research as a chromatographic reference standard.

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

Reference of 1-Phenylethyl acetate《Insight into the Mechanism of the Acylation of Alcohols with Acid Anhydrides Catalyzed by Phosphoric Acid Derivatives》 was published in 2021. The authors were Hayashi, Hiroyuki;Yasukochi, Shotaro;Sakamoto, Tatsuhiro;Hatano, Manabu;Ishihara, Kazuaki, and the article was included in《Journal of Organic Chemistry》. The author mentioned the following in the article:

Insight into the mechanism of a safe, simple, and inexpensive phosphoric acid (H₃PO₄)-catalyzed acylation of alcs. with acid anhydrides is described. The corresponding in situ-generated diacylated mixed anhydrides, unlike traditionally proposed monoacylated mixed anhydrides, are proposed as the active species. In particular, the diacylated mixed anhydrides act as efficient catalytic acyl transfer reagents rather than as Bronsted acid catalysts simply activating acid anhydrides. Remarkably, highly efficient phosphoric acid (1-3 mol %)-catalyzed acylation of alcs. with acid anhydrides was achieved and a 23 g scale synthesis of an ester was demonstrated. Also, phosphoric acid catalyst was effective for synthetically useful esterification from carboxylic acids, alcs., and acid anhydride. Moreover, with regard to recent developments in chiral 1,1′-bi-2-naphthol (BINOL)-derived phosphoric acid diester catalysts toward asym. kinetic resolution of alcs. by acylation, some phosphate diesters were examined As a result, a ³¹P NMR study and a kinetics study strongly supported not only the acid-base cooperative mechanism as previously proposed by other researchers but also the mixed anhydride mechanism as presently proposed by us. To complete the study, the researchers used 1-Phenylethyl acetate (cas: 93-92-5) .

1-Phenylethyl acetate(cas:93-92-5) is a carboxylic ester. Reference of 1-Phenylethyl acetate It may be prepared by acetylation of methyl phenyl carbinol; from benzaldehyde by reacting with magnesium methyl bromide and subsequent acetylation; from 1-bromoethylbenzene and silver acetate in acetic acid.

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

Han, Yingying;Du, Jinhua;Song, Zhaolin published 《Effects of the yeast endogenous β-glucosidase on hawthorn (Crataegus pinnatifida Bunge) wine ethyl carbamate and volatile compounds》 in 2021. The article was appeared in 《Journal of Food Composition and Analysis》. They have made some progress in their research.Quality Control of Ethyl tetradecanoate The article mentions the following:

In this study, twenty-three com. yeasts were inoculated into hawthorn (Crataegus pinnatifida, Bunge (Rosaceae)) extracted juice to explore their fermentation characteristics, beta-glucosidase activity, Et carbamate production, volatile compounds of resulted wines, along with the relationship of beta-glucosidase activity on Et carbamate and volatile compounds beta-Glucosidases were yeast and culture medium dependence. However, their activities in wines were merely 9.50%-30.7% of that in YM (yeast extract, malt extract) medium. Et carbamate, which was also yeast dependence, was correlated with beta-glucosidase (0.426*) whereas less affected by physicochem. indexes of hawthron wines. Volatile compounds were not correlated with beta-glucosidase activity whereas related to the physicochem. indexes. alpha-Terpineol, which was originally existed in the juice, was increased by the fermentation, while (-) linalool oxide, rose oxide, linalool, terpinen-4-ol, citronellol and nerolidol were newly produced during fermentation FC9 was the most optimal yeast for hawthorn wine making because of its excellent ethanol production, higher beta-glucosidase activity, moderate amounts of volatile compounds, best sensory score and lower EC (5.48μg/L). And Ethyl tetradecanoate (cas: 124-06-1) was used in the research process.

Ethyl tetradecanoate(cas: 124-06-1) is a labeled component from essential oil of natural hawthorn perfume. Also frequently used in cosmetics, soaps, and flavorings.Quality Control of Ethyl tetradecanoateEthyl myristate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of myristic acid with the hydroxy group of ethanol.

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