Month: November 2022

Benzothiophene derivatives as selective estrogen receptor covalent antagonists: Design, synthesis and anti-ERα activities was written by Bai, Chengfeng;Wu, Shuangjie;Ren, Shengnan;Zhu, Meiqi;Luo, Guoshun;Xiang, Hua. And the article was included in Bioorganic & Medicinal Chemistry in 2021.Category: ethers-buliding-blocks The following contents are mentioned in the article:

Estrogen receptor α emerged as a well validated therapeutic target of breast cancer for decades. However, approx. 50% of patients who initially respond to the standard-of-care (SoC), such as undergo therapy of Tamoxifen, generally inevitably progress to an endocrine-resistance ER+ phenotype. Recently, selective estrogen receptor covalent antagonists (SERCAs) targeted to ERα have demonstrated potential as therapeutic alternatives. In the present study, a series of novel 6-OH-benzothiophene (BT) derivatives targeting ERα and derived from Raloxifene were designed, synthesized, and biol. evaluated as covalent antagonists. Driven by the antiproliferative efficacy in ER+ breast cancer cells, chem. optimization finally led to compound I having potent antagonistic activity in ER+ tumor cells while not showing agonistic activity in endometrial cells. Moreover, a docking simulation was carried out to elucidate the binding mode, revealing I as an antagonist and covalently binding to the cysteine residue at the 530 position of ER helix H11. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3Category: ethers-buliding-blocks).

2-Methoxyethylamine (cas: 109-85-3) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Glycosylated simple phenolic profiling of food tannins using high resolution mass spectrometry (Q-Orbitrap) was written by Barnaba, C.;Larcher, R.;Nardin, T.;Dellacassa, E.;Nicolini, G.. And the article was included in Food Chemistry in 2018.Computed Properties of C9H12O3 The following contents are mentioned in the article:

Tannins are polyphenolic compounds extensively present in plants and used by food industry as processing aids. Due to the heterogeneity of plant sources, actions involved in food processing and tannin com. costs can be different. In the last years different approaches aimed at correctly identifying the tannin botanical origin have been developed, in order to satisfy the industry’s request to verify product labels. This work aimed to define the glycosidic simple phenolic profile of a large selection of monovarietal com. tannins of different origin, using a high-resolution untargeted approach. Using accurate mass, isotopic pattern and MS/MS fragmentation, 167 precursors, 89 as monoglycosylated and 78 as diglycosylated derivatives were tentatively identified in tannins, validating the untargeted approach with 3 custom-synthesized glycosidic precursors. Almost all tannin botanical varieties were shown to be characterized by a specific glycosylated phenolic profile, providing possible tools for tannin classification in the case of glycosylphenol standard availability. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Computed Properties of C9H12O3).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. 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. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Computed Properties of C9H12O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Towards a real knotaxane was written by Duden, Torben;Luening, Ulrich. And the article was included in Chemistry (Basel, Switzerland) in 2020.HPLC of Formula: 103-16-2 The following contents are mentioned in the article:

Two classes of mech. interlocked mols., [3]rotaxanes and knotted [1]rotaxanes, were the subject of this investigation. The necessary building blocks, alkyne-terminated axles containing two ammonium ions and azide-terminated stoppers, and azide-containing substituted macrocycles, have been synthesized and characterized. Different [3]rotaxanes were synthesized by copper-catalyzed “click” reactions between the azide stoppers and [3]pseudorotaxanes formed from the dialkyne axles and crown ethers (DB24C8). Methylation of the triazoles formed by the “click” reaction introduced a second binding site, and switching via deprotonation/protonation was investigated. In preliminary tests for the synthesis of a knotted [1]rotaxane, pseudorotaxanes were formed from azide-containing substituted macrocycles and dialkyne substituted diammonium axles, and copper-catalyzed “click” reactions were carried out. Mass spectral analyses showed successful double “click” reactions between two modified macrocycles and one axle. Whether a knotted [1]rotaxane was formed could not be determined This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2HPLC of Formula: 103-16-2).

4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. 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. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. HPLC of Formula: 103-16-2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Towards a real knotaxane was written by Duden, Torben;Luening, Ulrich. And the article was included in Chemistry (Basel, Switzerland) in 2020.Synthetic Route of C13H12O2 The following contents are mentioned in the article:

Two classes of mech. interlocked mols., [3]rotaxanes and knotted [1]rotaxanes, were the subject of this investigation. The necessary building blocks, alkyne-terminated axles containing two ammonium ions and azide-terminated stoppers, and azide-containing substituted macrocycles, have been synthesized and characterized. Different [3]rotaxanes were synthesized by copper-catalyzed “click” reactions between the azide stoppers and [3]pseudorotaxanes formed from the dialkyne axles and crown ethers (DB24C8). Methylation of the triazoles formed by the “click” reaction introduced a second binding site, and switching via deprotonation/protonation was investigated. In preliminary tests for the synthesis of a knotted [1]rotaxane, pseudorotaxanes were formed from azide-containing substituted macrocycles and dialkyne substituted diammonium axles, and copper-catalyzed “click” reactions were carried out. Mass spectral analyses showed successful double “click” reactions between two modified macrocycles and one axle. Whether a knotted [1]rotaxane was formed could not be determined This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Synthetic Route of C13H12O2).

4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Synthetic Route of C13H12O2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Picomole-Scale Synthesis and Screening of Macrocyclic Compound Libraries by Acoustic Liquid Transfer was written by Sangouard, Gontran;Zorzi, Alessandro;Wu, Yuteng;Ehret, Edouard;Schuettel, Mischa;Kale, Sangram;Diaz-Perlas, Cristina;Vesin, Jonathan;Bortoli Chapalay, Julien;Turcatti, Gerardo;Heinis, Christian. And the article was included in Angewandte Chemie, International Edition in 2021.Application of 109-85-3 The following contents are mentioned in the article:

Macrocyclic compounds are an attractive class of therapeutic ligands against challenging targets, such as protein-protein interactions. However, the development of macrocycles as drugs is hindered by the lack of large combinatorial macrocyclic libraries, which are cumbersome, expensive, and time consuming to make, screen, and deconvolute. Here, we established a strategy for synthesizing and screening combinatorial libraries on a picomolar scale by using acoustic droplet ejection to combine building blocks at nanoliter volumes, which reduced the reaction volumes, reagent consumption, and synthesis time. As a proof-of-concept, we assembled a 2700-member target-focused macrocyclic library that we could subsequently assay in the same microtiter synthesis plates, saving the need for addnl. transfers and deconvolution schemes. We screened the library against the MDM2-p53 protein-protein interaction and generated micromolar and sub-micromolar inhibitors. Our approach based on acoustic liquid transfer provides a general strategy for the development of macrocycle ligands. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3Application of 109-85-3).

2-Methoxyethylamine (cas: 109-85-3) belongs to ethers. 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.Application of 109-85-3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Graft modification of polybenzimidazole membranes for organic solvent ultrafiltration with scale up to spiral wound modules was written by Oxley, Adam;Gaffney, Piers R. J.;Kim, Daeok;Marchetti, Patrizia;Livingston, Andrew G.. And the article was included in Journal of Membrane Science in 2022.Reference of 109-85-3 The following contents are mentioned in the article:

In this work the selectivity of crosslinked organic solvent stable PBI membranes is tuned by varying the molar ratio of two grafting agents: a long flexible polymer modifier (Elastamine RE-1-1000, 1000 g mol-1) and a small mol. modifier (2-methoxyethylamine, 75 g mol^-1). Grafting exclusively with the long chain modifier provided a membrane with a mol. weight cut-off (MWCO) of 2000 g mol^-1 in acetonitrile. Increasing the proportion of small mol. modifier in the grafting reaction capped the grafting sites in the membrane. This caused a decrease in the grafting d. of the polymer modifier and allowed for the MWCO to be customized between 2000 g mol^-1 and 20,000 g mol^-1 in acetonitrile. High grafting densities underlie this control of performance, with up to 43% increase in the sp. weight of the membrane during modification. This technique was scaled up to the manufacture of 5 m lengths of membrane that were incorporated into 1.8” x 12” spiral wound modules, which showed performance consistent with the flat sheet membranes. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3Reference of 109-85-3).

2-Methoxyethylamine (cas: 109-85-3) belongs to ethers. 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.Reference of 109-85-3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Mechanism of action of 4-substituted phenols to induce vitiligo and antimelanoma immunity was written by Kammeyer, Arthur;Willemsen, Karin J.;Ouwerkerk, Wouter;Bakker, Walbert J.;Ratsma, Danielle;Pronk, Sebas D.;Smit, Nico P. M.;Luiten, Rosalie M.. And the article was included in Pigment Cell & Melanoma Research in 2019.HPLC of Formula: 103-16-2 The following contents are mentioned in the article:

Monobenzone is a 4-substituted phenol that can induce vitiligo and antimelanoma immunity. We investigated the influence of the chem. structure on the biol. activity of a series of structurally related 4-substituted phenols. All phenols inhibited cellular melanin synthesis, and eight of ten phenols inhibited tyrosinase activity, using the MBTH assay. These phenols also induced glutathione (GSH) depletion, indicative of quinone formation and protein thiol binding, which can increase the immunogenicity of melanosomal proteins. Specific T-cell activation was found upon stimulation with phenol-exposed pigmented cells, which also reacted with unexposed cells. In contrast, 4-tertbutylphenol induced immune activation was not restricted to pigment cells, analogous to contact sensitization. We conclude that 4-substituted phenols can induce specific T-cell responses against melanocytes and melanoma cells, also acting at distant, unexposed body sites, and may confer a risk of chem. vitiligo. Conversely, these phenols may be applicable to induce specific antimelanoma immunity. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2HPLC of Formula: 103-16-2).

4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. 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. 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.HPLC of Formula: 103-16-2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Electroconductometric determination of completely engulfing Maxwell-type three-phase emulsions was written by Lee, Jong-Moon;Lim, Kyung-Hee. And the article was included in Journal of Industrial and Engineering Chemistry (Seoul, Republic of Korea) in 2003.Electric Literature of C10H22O3 The following contents are mentioned in the article:

The completely engulfing Maxwell-type morphol. of 3-phase emulsions was determined by the elec. method in which elec. conductivities of the emulsions were measured at various relative amounts of the equilibrium phases and fit to the conductivity equations of this morphol. The Maxwell-type 3-phase emulsions can be regarded as (i) the drops as 2-phase emulsions were dispersed in the continuous 3rd phase from the standpoint of the morphol. and (ii) the drops of one phase are dispersed in the continuous phase as emulsions composed of the other 2 phases from the standpoint of the way the 3-phase emulsions are prepared Previously the Maxwell-type morphol. could not be determined by the elec. method because the equation for the case (i) was used. However, the conductivities calculated by the equation for the case (ii) were in excellent agreement with the measured ones and the Maxwell-type morphol. could be determined This result implies that elec. conductivity behavior of completely engulfing Maxwell-type 3-phase emulsions should be examined from the way they are formed. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Electric Literature of C10H22O3).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. 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.Electric Literature of C10H22O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Controlled lignosulfonate depolymerization via solvothermal fragmentation coupled with catalytic hydrogenolysis/hydrogenation in a continuous flow reactor was written by Brandi, Francesco;Antonietti, Markus;Al-Naji, Majd. And the article was included in Green Chemistry in 2021.Application of 2380-78-1 The following contents are mentioned in the article:

Sodium lignosulfonate (LS) was valorized to low mol. weight (M_w) fractions by combining solvothermal (SF) and catalytic hydrogenolysis/hydrogenation fragmentation (SHF) in a continuous flow system. This was achieved in either alc./H₂O (EtOH/H₂O or MeOH/H₂O) or H₂O as a solvent and Ni on nitrogen-doped carbon as a catalyst. The tunability according to the temperature of both SF and catalytic SHF of LS has been sep. investigated at 150°C, 200°C, and 250°C. In SF, the minimal M_w was 2994 g mol^-1 at 250°C with a dispersity (D) of 5.3 using MeOH/H₂O. In catalytic SHF using MeOH/H₂O, extremely low M_w was found (433 mg gLS^-1) with a D of 1.2 combined with 34 mg gLS^-1. The monomer yield was improved to 42 mg gLS^-1 using dual catalytic beds. These results provide direct evidence that lignin is an unstable polymer at elevated temperatures and could be efficiently deconstructed under hydrothermal conditions with and without a catalyst. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Application of 2380-78-1).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. 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 of 2380-78-1

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Discovery of Potent and Broad-Spectrum Pyrazolopyridine-Containing Antivirals against Enteroviruses D68, A71, and Coxsackievirus B3 by Targeting the Viral 2C Protein was written by Hu, Yanmei;Kitamura, Naoya;Musharrafieh, Rami;Wang, Jun. And the article was included in Journal of Medicinal Chemistry in 2021.Recommanded Product: 2-Methoxyethylamine The following contents are mentioned in the article:

The enterovirus genus of the picornavirus family contains many important human pathogens. EV-D68 primarily infects children, and the disease manifestations range from respiratory illnesses to neurol. complications such as acute flaccid myelitis (AFM). EV-A71 is a major pathogen for the hand, foot, and mouth disease (HFMD) in children and can also lead to AFM and death in severe cases. CVB3 infection can cause cardiac arrhythmias, acute heart failure, as well as type 1 diabetes. There is currently no FDA-approved antiviral for any of these enteroviruses. In this study, we report our discovery and development of pyrazolopyridine-containing small mols. such as I with potent and broad-spectrum antiviral activity against multiple strains of EV-D68, EV-A71, and CVB3. Serial viral passage experiments, coupled with reverse genetics and thermal shift binding assays, suggested that these mols. target the viral protein 2C. Overall, the pyrazolopyridine inhibitors represent a promising class of candidates for the urgently needed nonpolio enterovirus antivirals. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3Recommanded Product: 2-Methoxyethylamine).

2-Methoxyethylamine (cas: 109-85-3) belongs to ethers. 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. 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.Recommanded Product: 2-Methoxyethylamine

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem