Category: esters-buliding-blocks

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

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

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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

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.

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

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

Liu, Jidan;Xu, Erjie;Jiang, Jinyuan;Huang, Zeng;Zheng, Liyao;Liu, Zhao-Qing published 《Copper-mediated tandem ring-opening/cyclization reactions of cyclopropanols with aryldiazonium salts: synthesis of N-arylpyrazoles》 in 2020. The article was appeared in 《Chemical Communications (Cambridge, United Kingdom)》. They have made some progress in their research.Category: esters-buliding-blocks The article mentions the following:

A general method for the synthesis of structurally diverse N-arylpyrazoles I [R = H, 3-Me, 4-Cl, etc.; R¹ = c-Pr, Ph, 3-thienyl, etc.; R² = H, Me, Et, etc.] from readily available cyclopropanols and aryldiazonium salts was disclosed. The reaction was conducted at room temperature within minutes with a broad substrate scope and excellent regioselectivity. And Methyl 3-methylbenzoate (cas: 99-36-5) was used in the research process.

Methyl 3-methylbenzoate (cas: 99-36-5) is a common ester.Esters are common in organic chemistry and biological materials, and often have a pleasant characteristic, fruity odor. This leads to their extensive use in the fragrance and flavor industry. Ester bonds are also found in many polymers.Category: esters-buliding-blocks

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

Wang, Fang;Fan, Wanning;Liu, Nian;Sun, Xuemei published 《Effect of Saccharomyces cerevisiae-inoculated milk on the quality of cheese-like products during storage》 in . The article was appeared in 《Journal of Food Processing and Preservation》. They have made some progress in their research.Product Details of 124-06-1 The article mentions the following:

The development of new cheese with novel flavors is an increasing trend in the cheese market. Three exptl. cheese-like products (ECs) with different processing parameters were manufactured from Saccharomyces cerevisiae-fermented milk, and their composition, functionality, volatile compounds, and sensory characteristics were compared with those of model Cheddar cheese (CC) during storage. Compared with CC, ECs had higher moisture content, yield, and pH but lower protein and fat content. In the early stage of storage, CC had the highest hardness and storage modulus, however, these values were higher in ECs than in CC with storing. After 90 days of storage, S. cerevisiae-inoculated milk significantly increased the levels of alcs. and esters in the ECs, contributing to high taste scores, especially ECs manufactured with high saccharose. Overall, cheese-like products manufactured from S. cerevisiae-fermented milk had a high yield, good functionality, and improved flavor profile and taste, with market potential. Novelty impact statement : The development of new cheese with novel flavors is an increasing trend. Cheese-like products were manufactured from Saccharomyces cerevisiae-fermented milk. The resulted product had improved flavor profile and taste, with market potential. And Ethyl tetradecanoate (cas: 124-06-1) was used in the research process.

Ethyl tetradecanoate(cas: 124-06-1) is a natural product found in Psidium guajava, Litchi chinensis, and other organisms.Product Details of 124-06-1Ethyl 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.

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sun, Ziyue;Zhao, Yanxia;Prior, Timothy J.;Elsegood, Mark R. J.;Wang, Kuiyuan;Xing, Tian;Redshaw, Carl published 《Mono-oxo molybdenum(VI) and tungsten(VI) complexes bearing chelating aryloxides: synthesis, structure and ring opening polymerization of cyclic esters》. The research results were published in《Dalton Transactions》 in 2019.Related Products of 106-02-5 The article conveys some information:

The mono-oxo aryloxide complexes [M(O)(L¹)₂] (M = Mo (1·hexane), W(2·2MeCN)) were prepared from [Mo(O)(Cl)₄] or [W(O)(Ot-Bu)₄] and two equivalent of the di-phenol 2,2′-ethylidenebis(4,6-di-tert-butylphenol) L¹H₂, resp. Use of in situ generated [Mo(O)(Ot-Bu)₄] with two equivalent of L¹H₂ also gave 1·2MeCN. In the presence of adventitious oxygen, attempts to generate in situ [Mo(O)(Ot-Bu)₄] and reaction with one equivalent of L¹H₂ afforded the bi-metallic complex [Mo(O)(L¹)(μ-O)Li(THF)(MeCN)]₂·2MeCN (3·2MeCN). Use of the tetra-phenol α,α,α’,α’-tetrakis(3,5-di-tert-butyl-2-hydroxyphenyl)-p-xyleneH₄ (L²H₄) with [Mo(O)(Oi-Pr)₄] gave {[Mo(O)]L²}₂ (4), while the analogous W complex {[W(O)]L²}₂ (5) was isolated from the reaction of L²H₄ with [W(O)(Ot-Bu)₄]. Similar reaction of p-tert-butylcalix[4]areneH₄ (L³H₄) with [Mo(O)(Oi-Pr)₄] afforded [Mo(O)L³(NCMe)]·3MeCN (6). Modifications of known routes were employed to access complexes [W(Cl)₂L³]·3.5MeCN (7·3.5MeCN) and [W(O)L³(NCMe)] (8), while use of [WO(Ot-Bu)₄] with L³H₄ unexpectedly afforded [W(Ot-Bu)₂L³]·MeCN (9·MeCN). The mol. crystal structures for 1–9 are reported, and the ability of these complexes to act as catalysts for the ring opening polymerization (ROP) of ε-caprolactone (ε-CL), δ-valerolactone (δ-VL) and ω-pentadecalactone (ω-PDL) was studied. The Mo complexes 1 and 4 were the best performers for ε-Cl and δ-VL, but all complexes exhibited poor control and were also inactive toward the ROP of PDL.Oxacyclohexadecan-2-one (cas: 106-02-5) were involved in the experimental procedure.

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.Related Products of 106-02-5It 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

Reference of Diethyl cyclobutane-1,1-dicarboxylate《Preparation of MgCl₂-supported Ziegler-Natta catalyst systems with new electron donors》 was published in 2010. The authors were Marques, Maria de Fatima V.;Cardoso, Renata da Silva;Galvao da Silva, Micheli, and the article was included in《Applied Catalysis, A: General》. The author mentioned the following in the article:

In the present work, the effect of new internal and external electron donors for Ziegler-Natta systems of the type MgCl₂/internal electron donor (ID)/TiCl₄/external electron donor (ED)/AlR₃ was compared with the conventional use of Bu phthalate and dimethoxy-diphenylsilane as electron donors. Catalyst systems employing various internal and external donors were evaluated in propylene polymerization The polymers were characterized by IR absorption spectroscopy, differential scanning calorimetry and heptane extraction The prepared catalysts with the new internal donors produced polypropylene with isotactic index up to 98% under the polymerization conditions employed. And Diethyl cyclobutane-1,1-dicarboxylate (cas: 3779-29-1) was used in the research process.

Diethyl 1,1-cyclobutanedicarboxylate(cas:3779-29-1 Reference of Diethyl cyclobutane-1,1-dicarboxylate) reacts with silicon to form diethyl esters and magnesium to form magnesium salts. The reaction time for this compound is short, which may be due to its ability to undergo debromination.

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

Jennings, Sarah L.;Hoover, Brian A.;Sin, Simon Yung Wa;Ebeler, Susan E. published 《Feather chemicals contain information about the major histocompatibility complex in a highly scented seabird》 in 2022. The article was appeared in 《Proceedings of the Royal Society B: Biological Sciences》. They have made some progress in their research.Computed Properties of C16H32O2 The article mentions the following:

Mate choice informed by the immune genes of the major histocompatibility complex (MHC) may provide fitness benefits including offspring with increased immunocompetence. Olfactory cues are considered the primary mechanism organisms use to evaluate the MHC of potential mates, yet this idea has received limited attention in birds. Motivated by a finding of MHC-dependent mate choice in the Leach’s storm-petrel (Oceanodroma leucorhoa), we examined whether the chem. profiles of this highly scented seabird contain information about MHC genes. Whereas previous studies in birds examined non-volatile compounds, we used gas chromatog.-mass spectrometry to measure the volatile compounds emitted from feathers that potentially serve as olfactory infochems. about MHC and coupled this with locus-specific genotyping of MHC IIB genes. We found that feather chems. reflected individual MHC diversity through interactions with sex and breeding status. Furthermore, similarity in MHC genotype was correlated with similarity in chem. profiles within female-female and male-female dyads. We provide the first evidence that volatile chems. from bird feathers can encode information about the MHC. Our findings suggest that olfaction likely aids MHC-based mate choice in this species and highlight a role for chems. in mediating genetic mate choice in birds where this mode of communication has been largely overlooked.Ethyl tetradecanoate (cas: 124-06-1) were involved in the experimental procedure.

Ethyl tetradecanoate(cas: 124-06-1) is a natural product found in Psidium guajava, Litchi chinensis, and other organisms.Computed Properties of C16H32O2Ethyl 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