Author: Jessica.F

A Method for Obtaining Defined End Groups of Polymethacrylates Prepared by the RAFT Process during Aminolysis was written by Roth, Peter J.;Kessler, Daniel;Zentel, Rudolf;Theato, Patrick. And the article was included in Macromolecules (Washington, DC, United States) in 2008.Quality Control of Benzyl benzodithioate This article mentions the following:

We presented a simple modification of the aminolysis of polymethacrylates prepared by the RAFT process overcoming the problems of thiolactone and side product formation. The method uses the high reactivity of Me methanethiosulfonate toward thiols, thus favoring Me disulfide formation even in the presence of oxygen. The transformed disulfide end group showed a higher affinity toward a gold surface than the dithioester end group and could successfully be employed for encapsulation of gold nanoparticles. This method enables polymethacrylates to be grafted onto metal surfaces and also opens new routes to end-group functionalization of RAFT polymers. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Quality Control of Benzyl benzodithioate).

Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Quality Control of Benzyl benzodithioate

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

Discovery of a 1-Methyl-3,4-dihydronaphthalene-Based Sphingosine-1-Phosphate (S1P) Receptor Agonist Ceralifimod (ONO-4641). A S1P₁ and S1P₅ Selective Agonist for the Treatment of Autoimmune Diseases was written by Kurata, Haruto;Kusumi, Kensuke;Otsuki, Kazuhiro;Suzuki, Ryo;Kurono, Masakuni;Komiya, Takaki;Hagiya, Hiroshi;Mizuno, Hirotaka;Shioya, Hiroki;Ono, Takeji;Takada, Yuka;Maeda, Tatsuo;Matsunaga, Norikazu;Kondo, Tetsu;Tominaga, Sachiko;Nunoya, Ken-ici;Kiyoshi, Hidekazu;Komeno, Masaharu;Nakade, Shinji;Habashita, Hiromu. And the article was included in Journal of Medicinal Chemistry in 2017.Category: esters-buliding-blocks This article mentions the following:

The discovery of 1-({6-[(2-methoxy-4-propylbenzyl)oxy]-1-methyl-3,4-dihydronaphthalen-2-yl}methyl)azetidine3-carboxylic acid (I) (13n, ceralifimod, ONO-4641), a sphingosine-1-phosphate (S1P) receptor agonist selective for S1P₁ and S1P₅, is described. While it has been revealed that the modulation of the S1P₁ receptor is an effective way to treat autoimmune diseases such as relapsing-remitting multiple sclerosis (RRMS), it was also reported that activation of the S1P₃ receptor is implicated in some undesirable effects. The authors carried out a structure-activity relationship (SAR) study of hit compound 6 with an amino acid moiety in the hydrophilic head region. Following identification of a lead compound with a dihydronaphthalene central core by inducing conformational constraint, optimization of the lipophilic tail region led to the discovery of I as a clin. candidate that exhibited >30 000-fold selectivity for S1P₁ over S1P₃ and was potent in a peripheral lymphocyte lowering (PLL) test in mice (ED₅₀ = 0.029 mg/kg, 24 h after oral dosing). In the experiment, the researchers used many compounds, for example, Methyl 2-methoxy-4-methylbenzoate (cas: 81245-24-1Category: esters-buliding-blocks).

Methyl 2-methoxy-4-methylbenzoate (cas: 81245-24-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Category: esters-buliding-blocks

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

Design and Synthesis of Nonpeptide Inhibitors of Hepatocyte Growth Factor Activation was written by Venukadasula, Phanindra K. M.;Owusu, Benjamin Y.;Bansal, Namita;Ross, Larry J.;Hobrath, Judith V.;Bao, Donghui;Truss, Jackie W.;Stackhouse, Murray;Messick, Troy E.;Klampfer, Lidija;Galemmo, Robert A.. And the article was included in ACS Medicinal Chemistry Letters in 2016.Application In Synthesis of 3-Cyanophenylisocyanate This article mentions the following:

In this letter the authors report first nonpeptide inhibitors of hepatocyte growth factor (HGF) activation. These compounds inhibit the three proteases (matriptase, hepsin, and HGF activator) required for HGF maturation. The authors show that several compounds I [Z = Me, HO, HOCH₂, MeOCH₂] block activation of fibroblast-derived pro-HGF, thus preventing fibroblast-induced scattering of DU145 prostate cancer cells. One of these compounds (SRI 31215) I [Z = Me] is very soluble (91 μM) and has excellent microsome stability (human t_1/2 = 162 min; mouse t_1/2 = 296 min). In mouse I [Z = Me] has an in vivo t_1/2 = 5.8 h following IV administration. The high solubility of I [Z = Me] and IV t_1/2 make this compound a suitable prototype “triplex inhibitor” for the study of the inhibition of HGF activation in vivo. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Application In Synthesis of 3-Cyanophenylisocyanate).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Application In Synthesis of 3-Cyanophenylisocyanate

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

Synthesis of podophyllotoxin-glycosyl triazoles via click protocol mediated by silver (I)-N-heterocyclic carbenes and their anticancer evaluation as topoisomerase-II inhibitors was written by Nerella, Srinivas;Kankala, Shravankumar;Gavaji, Brahmeshwari. And the article was included in Natural Product Research in 2021.Product Details of 4163-60-4 This article mentions the following:

Herein we report the regioselective synthesis of podophyllotoxin-Glycosyl triazole hybrids catalyzed by Ag(I)-N-heterocyclic carbene (Ag(I)-NHC) in a short reaction time (∼30 min) at ambient conditions. In principle, it is the first report of Click alkyne-azide cycloaddition catalyzed by Ag(I)-NHC catalyst and moreover, this new methodol. yielded good results when compared with traditional CuAAC in terms of reaction time and selectivity. The synthesized compounds were further explored for in vitro anticancer activity against four human cancer cell lines Du145, HeLa, A-549, and MCF-7 and found that these synthesized compounds possess significant anticancer activity. Further, the compounds and were identified as promising leads due to their better activity across all cell lines than that of the standard drug etoposide. Mol. docking studies of I & II with DNA Topoisomerase-II were revealed that the free energy calculations of active compounds were in good agreement with observed IC₅₀ values. In the experiment, the researchers used many compounds, for example, (2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4Product Details of 4163-60-4).

(2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Product Details of 4163-60-4

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

Mechanistic Evaluation of Bioorthogonal Decaging with trans-Cyclooctene: The Effect of Fluorine Substituents on Aryl Azide Reactivity and Decaging from the 1,2,3-Triazoline was written by Matikonda, Siddharth S.;Fairhall, Jessica M.;Fiedler, Franziska;Sanhajariya, Suchaya;Tucker, Robert A. J.;Hook, Sarah;Garden, Anna L.;Gamble, Allan B.. And the article was included in Bioconjugate Chemistry in 2018.Recommanded Product: Methyl 4-amino-2,5-difluorobenzoate This article mentions the following:

Bioorthogonal prodrug activation/decaging strategies need to be selective, rapid and release the drug from the masking group upon activation. The rates of the 1,3-dipolar cycloaddition between a trans-cyclooctene (TCO) and a series of fluorine-substituted azido-PABC self-immolative spacers caging two model drugs, and subsequent release from the 1,2,3-triazoline are reported. As the number of fluorine substituents on the PABC linker increases from one to four, the rate of cycloaddition increases by almost one order of magnitude. Using a combination of fluorescence, ¹H/¹⁹F NMR, and computational experiments, we have been able to determine how substituents on the PABC ring can influence the degradation rates and also the product distribution of the 1,2,3-triazoline. We have also been able to determine how these substituents influence the rate of imine hydrolysis and 1,6-self-immolation decaging rates of the generated anilines. The NMR and computational studies demonstrate that fluorine substituents on the aromatic ring lower the transition state energy required for converting the triazoline to the imine or aziridine intermediates via extrusion of diat. nitrogen, and that in the case of a tetrafluoro substituted aromatic ring, it is the imine hydrolysis and 1,6-self-immolation that is rate-limiting. This knowledge further enhances the understanding of factors which influence the stability of triazolines, and enables potential applications of fluorinated aromatics, in particular, perfluorinated aromatics, in synthetic chem. and sustained-release drug delivery systems. In the experiment, the researchers used many compounds, for example, Methyl 4-amino-2,5-difluorobenzoate (cas: 952285-52-8Recommanded Product: Methyl 4-amino-2,5-difluorobenzoate).

Methyl 4-amino-2,5-difluorobenzoate (cas: 952285-52-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Recommanded Product: Methyl 4-amino-2,5-difluorobenzoate

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

Synthesis and SAR studies of 5-(pyridin-4-yl)-1,3,4-thiadiazol-2-amine derivatives as potent inhibitors of Bloom helicase was written by Rosenthal, Andrew S.;Dexheimer, Thomas S.;Gileadi, Opher;Nguyen, Giang H.;Chu, Wai Kit;Hickson, Ian D.;Jadhav, Ajit;Simeonov, Anton;Maloney, David J.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2013.Recommanded Product: 3-Cyanophenylisocyanate This article mentions the following:

Human cells utilize a variety of complex DNA repair mechanisms to combat constant mutagenic and cytotoxic threats from both exogenous and endogenous sources. The RecQ family of DNA helicases, which includes Bloom helicase (BLM), plays an important function in DNA repair by unwinding complementary strands of duplex DNA and atypical DNA structures such as Holliday junctions. Mutations of the BLM gene can result in Bloom syndrome, an autosomal recessive disorder associated with cancer predisposition. BLM-deficient cells exhibit increased sensitivity to DNA damaging agents indicating that a selective BLM inhibitor could be useful in potentiating the anticancer activity of these agents. In this work, we describe the medicinal chem. optimization of the hit mol. following a quant. high-throughput screen of >355,000 compounds These efforts lead to the identification of ML216 and related analogs, which possess potent BLM inhibition and exhibit selectivity over related helicases. Moreover, these compounds demonstrated cellular activity by inducing sister chromatid exchanges, a hallmark of Bloom syndrome. In the experiment, the researchers used many compounds, for example, 3-Cyanophenylisocyanate (cas: 16413-26-6Recommanded Product: 3-Cyanophenylisocyanate).

3-Cyanophenylisocyanate (cas: 16413-26-6) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Recommanded Product: 3-Cyanophenylisocyanate

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

Electrochemical Behavior of Thiocarbonylthio Chain Transfer Agents for RAFT Polymerization was written by Strover, Lisa T.;Cantalice, Alexis;Lam, Jeff Y. L.;Postma, Almar;Hutt, Oliver E.;Horne, Michael D.;Moad, Graeme. And the article was included in ACS Macro Letters in 2019.COA of Formula: C14H12S2 This article mentions the following:

Electrochem. activation of thiocarbonylthio reversible addition-fragmentation chain transfer (RAFT) agents (S=C(Z)S-R) is explored as a potential method for initiating RAFT polymerization under mild conditions without producing initiator-derived byproducts. Herein we apply cyclic voltammetry to establish a predominant reduction mechanism, where electrochem. reduction is coupled to an irreversible first-order chem. reaction. Structure-dependent trends in cyclic voltammograms (CVs), and comparison to absorption spectra, clarify the role of R- and Z-groups in determining reduction processes. The major reduction peak moves to more cathodic potentials in the series dithiobenzoates > trithiocarbonates > heteroaromatic dithiocarbamates > xanthates ∼ N-alkyl-N-aryldithiocarbamates, due to the Z-group influence on thiocarbonyl bond reactivity. More active (electron-withdrawing, radical stabilizing) R-groups shift the reduction peak anodically, in part due to their influence on the rate of the coupled chem. reaction. Anal. of CVs across a range of scan rates revealed that kinetic control over the reduction mechanism is influenced by both the charge transfer rate and chem. reaction rate. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7COA of Formula: C14H12S2).

Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.COA of Formula: C14H12S2

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

Combining Click Reactions for the One-Pot Synthesis of Modular Biomolecule Mimetics was written by Brinkoe, Anne;Risinger, Christian;Lambert, Annie;Blixt, Ola;Grandjean, Cyrille;Jensen, Henrik H.. And the article was included in Organic Letters in 2019.Computed Properties of C16H22O11 This article mentions the following:

Here, we report on the first combined one-pot use of the two so-called “click reactions”: the thiol-ene coupling and the copper-catalyzed alkyne-azide cycloaddition These reactions were employed in an alternating and one-pot fashion to combine appropriately functionalized monomeric carbohydrate building blocks to create mimics of trisaccharides and tetrasaccharides as single anomers, with only minimal purification necessary. The deprotected oligosaccharide mimics were found to bind both plant lectins and human galectin-3. In the experiment, the researchers used many compounds, for example, (2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4Computed Properties of C16H22O11).

(2S,3R,4S,5S,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 4163-60-4) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Computed Properties of C16H22O11

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

Inferring the origin of rare fruit distillates from compositional data using multivariate statistical analyses and the identification of new flavour constituents was written by Mihajilov-Krstev, Tatjana M.;Denic, Marija S.;Zlatkovic, Bojan K.;Stankov-Jovanovic, Vesna P.;Mitic, Violeta D.;Stojanovic, Gordana S.;Radulovic, Niko S.. And the article was included in Journal of the Science of Food and Agriculture in 2015.COA of Formula: C11H14O3 This article mentions the following:

BACKGROUND In Serbia, delicatessen fruit alc. drinks are produced from autochthonous fruit-bearing species such as cornelian cherry, blackberry, elderberry, wild strawberry, European wild apple, European blueberry and blackthorn fruits. There are no chem. data on many of these and herein we analyzed volatile minor constituents of these rare fruit distillates. Our second goal was to determine possible chem. markers of these distillates through a statistical/multivariate treatment of the herein obtained and previously reported data. RESULTS Detailed chem. analyses revealed a complex volatile profile of all studied fruit distillates with 371 identified compounds A number of constituents were recognized as marker compounds for a particular distillate. Moreover, 33 of them represent newly detected flavor constituents in alc. beverages or, in general, in foodstuffs. With the aid of multivariate analyses, these volatile profiles were successfully exploited to infer the origin of raw materials used in the production of these spirits. It was also shown that all fruit distillates possessed weak antimicrobial properties. CONCLUSION It seems that the aroma of these highly esteemed wild-fruit spirits depends on the subtle balance of various minor volatile compounds, whereby some of them are specific to a certain type of fruit distillate and enable their mutual distinction. © 2014 Society of Chem. Industry. In the experiment, the researchers used many compounds, for example, Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0COA of Formula: C11H14O3).

Ethyl 2-hydroxy-3-phenylpropanoate (cas: 15399-05-0) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.COA of Formula: C11H14O3

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

Viscoelasticity, Tensile Properties, and Microstructure Development in Cyclic Olefin Copolymer/Polyolefin Elastomer Blends was written by Pei, Xiaoshan;Li, Yanxiao;Zhao, Shicheng;He, Xuelian. And the article was included in Macromolecular Chemistry and Physics in 2022.COA of Formula: C73H108O12 This article mentions the following:

The new ethylene/cyclic olefin copolymers (COCs) are a major breakthrough in traditional polyolefins made available by metallocenes, but its high brittleness restricts the applications. Ethylene/1-octene copolymer (POE) with similar backbones is blended with COCs to compensate the rigidity of cyclic segments. Field emission scanning electron microscope photos and Raman spectra demonstrate the existence of abundant phase interfaces between POE and COC, and the phase structure changes from spherical droplets, of partial continuity to cocontinuity with rising POE components. The phase changes are considered as corresponding to the formation, expansion, and coalescence of droplets at melting state according to Van Gurp curves, Han plot, and Cole-Cole plot. Viscoelastic data show that the storage modulus, loss modulus, and complex viscosity reach a high value at medium POE contents. Furthermore, the tensile strength and fracture energy increases and then decreases, the elongation at break increases and Young’s modulus reduces with the increment of POE percentage. Because of the large spherical and ellipsoidal structures and abundant interfaces, the synchronous reinforcement and toughness come true at a medium ratio of POEs. Dynamic mech. anal. confirms the existence of the interfacial layer, and the interfacial layer becomes more pronounced with the rising POE contents exactly as the morphol. and rheol. findings. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8COA of Formula: C73H108O12).

2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.COA of Formula: C73H108O12

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