Category: ethers-buliding-blocks

Mortazavi, Saeideh-Sadat published the artcileShip-in-bottle preparation of multi-SO₃H functionalized ionic liquid@MIL-100(Fe) for acid-catalyzed ring-opening of epoxides, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Applied Organometallic Chemistry (2021), 35(12), e6424, database is CAplus.

The fact that the homogeneous acid catalysts are usually separated difficulty than heterogeneous catalysts from the reaction media, the opportunity to combine the advantages of both homogeneous and heterogeneous catalytic systems by immobilizing ILs within the pores of a porous solid support host is an alternative method. In this research, a multi-SO₃H functionalized ionic liquid derived from hexamethylenetetramine (HMTA) and 1,3-propane sultone was entrapped inside the pores of MIL-100(Fe) through the ship-in-bottle method and utilized for heterogeneous acid-catalyzed ring-opening of epoxides under solvent-free conditions. The physicochem. properties of prepared catalyst were fully elucidated by various methods. FT-IR spectroscopy and elemental anal. approved the successful incorporation of modified groups within the MIL-100(Fe) cavities. The concentration of acid sites was measured via the acid-base titration which exhibited the 0.9 mmol/g H⁺ in the catalyst structure. Also, thermogravimetric anal. (TGA) profile showed the loosing of modified groups at 300-600°C. Moreover, X-ray diffraction (XRD) anal. showed that the MIL-100(Fe) structure was retained after modification and nitrogen adsorption-desorption anal. (BET method) manifested the decrease in surface area caused by incorporation of ionic liquid The fabricated catalyst exhibited high catalytic efficiency in methanolysis of styrene oxide (99% conversion in 3 h) under ambient conditions and used without a substantial drop in product yield in further rounds.

Applied Organometallic Chemistry published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Recommanded Product: 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Barluenga, J. published the artcileFriedel-Crafts reactions of beta-substituted organomercury(II) compounds, Safety of 2-Isopropylanisole, the publication is Anales de Quimica (1968-1979) (1977), 73(7-8), 1032-4, database is CAplus.

Alkylation of aromatic rings (e.g. in PhOMe) with β-oxymercuric compounds (e.g. AcOCHMeCH₂HgBr) in the presence of a Lewis acid (e.g. AlCl₃) gave, besides alkylarom. compounds (e.g. o-MeOC₆H₄CHMe₂), β-functionalized alkylarom. compounds (e.g. o-MeOC₆H₄CH₂CHMe(OAc)].

Anales de Quimica (1968-1979) published new progress about 2944-47-0. 2944-47-0 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 2-Isopropylanisole, and the molecular formula is C10H14O, Safety of 2-Isopropylanisole.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Onda, Yuichi published the artcileConformation-based design and synthesis of apratoxin A mimetics modified at the α,β-unsaturated thiazoline moiety, COA of Formula: C25H23NO4, the publication is Journal of Medicinal Chemistry (2017), 60(15), 6751-6765, database is CAplus and MEDLINE.

We have demonstrated design, synthesis, and biol. evaluation of apratoxin A mimetics. In the first generation, the moCys moiety was replaced with seven simple amino acids as their 3D structures can be similar to that of apratoxin A. Apratoxins M1-M7 were synthesized using solid-phase peptide synthesis and solution-phase macrolactamization. Apratoxin M7, which contains a piperidinecarboxylic acid moiety, exhibited potent cytotoxicity against HCT-116 cells. In the second generation, substitution of each amino acid residue in the tripeptide Tyr(Me)-MeAla-MeIle moiety in apratoxin M7 led to the development of the highly potent apratoxin M16 possessing biphenylalanine (Bph) instead of Tyr(Me), which exhibited an IC₅₀ value of 1.1 nM against HCT-116 cells. Moreover, compared to apratoxin A, apratoxin M16 exhibited a similarly high level of growth inhibitory activity against various cancer cell lines. The results indicate that apratoxin M16 could be a potential candidate as an anticancer agent.

Journal of Medicinal Chemistry published new progress about 77128-73-5. 77128-73-5 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-phenylpropanoic acid, and the molecular formula is C25H23NO4, COA of Formula: C25H23NO4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Clemente, Francesca published the artcilePiperidine Azasugars Bearing Lipophilic Chains: Stereoselective Synthesis and Biological Activity as Inhibitors of Glucocerebrosidase (GCase), Name: (2-Methoxyphenyl)methanamine, the publication is Journal of Organic Chemistry (2021), 86(18), 12745-12761, database is CAplus and MEDLINE.

We report a straightforward synthetic strategy for the preparation of trihydroxypiperidine azasugars, e.g. I, decorated with lipophilic chains at both the nitrogen and the adjacent carbon as potential inhibitors of the lysosomal enzyme glucocerebrosidase (GCase), which is involved in Gaucher disease. The procedure relies on the preparation of C-erythrosyl N-alkylated nitrones reaction of aldehyde and primary amines followed by oxidation of the imines formed in situ with the methyltrioxorhenium catalyst and urea hydrogen peroxide. The addition of octyl-MgBr to nitrone provided access to both epimeric hydroxylamines with opposite configuration at the newly created stereo-center in a stereo-divergent and completely stereoselective way, depending on the absence or presence of BF₃·Et₂O, and reductive amination. Hydroxypiperidine I was the best ligand for GCase (IC₅₀ = 15μM), in agreement with MD simulations that allowed us to identify the chair conformation corresponding to the best binding affinity.

Journal of Organic Chemistry published new progress about 6850-57-3. 6850-57-3 belongs to ethers-buliding-blocks, auxiliary class Amine,Benzene,Ether, name is (2-Methoxyphenyl)methanamine, and the molecular formula is C8H11NO, Name: (2-Methoxyphenyl)methanamine.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Alonso Doval, David published the artcileIncreasingly twisted push-pull oligothiophenes and their planarization in confined space, Application In Synthesis of 596819-12-4, the publication is Organic & Biomolecular Chemistry (2013), 11(43), 7467-7471, database is CAplus and MEDLINE.

A series of systematically deplanarized push-pull oligothiophenes is designed and synthesized to determine the perfect twist for maximal spectroscopic response to their planarization within lipid bilayer membranes. Weak deplanarization naturally gives weak shifts, but strong deplanarization also gives weak shifts because planarization becomes impossible. Intermediate deplanarization turns out to be ideal. The shifts found in response to chromophore planarization are not as dramatic as with lobsters during cooking but sufficient to discriminate solid-ordered and liquid-disordered membranes with the naked eye.

Organic & Biomolecular Chemistry published new progress about 596819-12-4. 596819-12-4 belongs to ethers-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Ether,Boronate Esters,Boronic acid and ester, name is 2-(5-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C11H17BO3S, Application In Synthesis of 596819-12-4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Chiba, Takuya published the artcileStructure-activity relationship study of syringolin A as a potential anticancer agent, HPLC of Formula: 77128-73-5, the publication is Bioorganic & Medicinal Chemistry Letters (2015), 25(21), 4872-4877, database is CAplus and MEDLINE.

A detailed structure-activity relationship of syringolin, which is a promising antitumor natural product, was described. The authors previously developed syringolin A analog I as a potent proteasome inhibitor by the structure-based drug design of syringolin A. The authors synthesized a range of analogs of I, having a different length of the lipophilic chain and substituted aryl group, and their cytotoxicity against human cancer cells was evaluated. It turned out that these modifications greatly affected the cytotoxicity. Further optimization would lead to develop a novel proteasome inhibitor.

Bioorganic & Medicinal Chemistry Letters published new progress about 77128-73-5. 77128-73-5 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-phenylpropanoic acid, and the molecular formula is C25H23NO4, HPLC of Formula: 77128-73-5.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Wada, Yuuki published the artcileEnantioselective bromination of axially chiral cyanoarenes in the presence of bifunctional organocatalysts, Name: (3-Methoxy-5-methylphenyl)boronic acid, the publication is RSC Advances (2019), 9(54), 31654-31658, database is CAplus and MEDLINE.

Enantioselective bromination of axially chiral cyanoarenes bearing high intrinsic rotational barriers via dynamic kinetic resolution using bifunctional organocatalysts was afforded brominated axially chiral cyanoarenes I [R = H, Me, CF₃, etc.; R¹ = F, Br, OMe, etc.]. Sequential addition of a brominating reagent in several portions at an optimized temperature was effective in accomplishing high enantioselectivities.

RSC Advances published new progress about 725251-81-0. 725251-81-0 belongs to ethers-buliding-blocks, auxiliary class Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is (3-Methoxy-5-methylphenyl)boronic acid, and the molecular formula is C11H22N2O4, Name: (3-Methoxy-5-methylphenyl)boronic acid.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Nambu, Noritoshi published the artcilePhysical and electrochemical properties of fluorinated dialkyl ethers, COA of Formula: C4H7F3O2, the publication is Electrochemistry (Tokyo, Japan) (2016), 84(10), 776-778, database is CAplus.

Dialkyl ethers show high relative permittivities and low viscosities as compared to the corresponding linear carbonates. We have synthesized 1-(2-fluoroethoxy)-2-(2,2,2-trifluoroethoxy)ethane (FETFEE). The relative permittivity and viscosity of FETFEE were higher than those of 1,2-diethoxyethane (DEE, ethylene glycol di-Et ether). The conductivity of 1 mol dm^-3 LiPF₆ solution in FETFEE was higher than that in 1-ethoxy-2-(2,2,2-trifluoroethoxy)ethane (ETFEE). The use of FETFEE as a co-solvent improved the discharge capacity of a Li ‘ LiCoO₂ coin cell.

Electrochemistry (Tokyo, Japan) published new progress about 2358-54-5. 2358-54-5 belongs to ethers-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-(2,2,2-Trifluoroethoxy)ethanol, and the molecular formula is C4H7F3O2, COA of Formula: C4H7F3O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Danielski, Renan published the artcileA non-conventional approach for obtaining phenolic antioxidants from red guava (Psidium guajava L.) by-products, Related Products of ethers-buliding-blocks, the publication is Journal of Food Processing and Preservation (2022), 46(6), e16502, database is CAplus.

The recovery of phenolic antioxidants from agro-industrial byproducts using non-conventional techniques is a powerful tool to explore the bioactive potential of natural sources. Therefore, it is imperative to analyze the most suitable method to investigate a plant material’s phenolic composition This study used ultra-turrax (UTE), ultrasonic bath (BUAE), and pressurized liquid (PLE) for soluble phenolic extraction from guava’s pulp and processing waste. UTE at 25°C for 1 h yielded the highest concentration of total phenolics and flavonoids from guava pulp, while PLE for 30 min at 60°C/10 MPa presented the best performance for flavonoids and condensed tannins recovery from guava waste. PLE produced extracts with 39 phenolics and high antioxidant capacity. Besides, scopoletin, resveratrol, and naringin are being reported for the first time in this fruit. These results suggest possible alternatives for the recovery of bioactive compound, which may be used to develop nutraceuticals and/or functional foods. Practical applications : Upon guava processing, 30% of fruit’s total volume is lost in the form of byproducts (seeds, peels, and pulp leftovers). Evidence points out that this fraction, along with guava’s pulp, is rich in phenolics with antioxidant properties. An extraction procedure should be conducted to recover these compounds However, conventional techniques are laborious, time-consuming, and they generally use a large amount of toxic organic solvent. Ultra-turrax-UTE, ultrasonic bath-BUAE, and pressurized liquid-PLE are non-conventional approaches that make possible the reduction of solvents and the recovery of selected phenolics not possible with conventional techniques. These extracts could be further applied to lipid-rich foods as a natural antioxidant system and/or as an ingredient in the development of nutraceuticals and functional foods.

Journal of Food Processing and Preservation published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, Related Products of ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Anokhina, Viktoriya S. published the artcileEnhancing the ligand efficiency of anti-HIV compounds targeting frameshift-stimulating RNA, Category: ethers-buliding-blocks, the publication is Bioorganic & Medicinal Chemistry (2019), 27(13), 2972-2977, database is CAplus and MEDLINE.

Ribosomal frameshifting, a process whereby a translating ribosome is diverted from one reading frame to another on a contiguous mRNA, is an important regulatory mechanism in biol. and an opportunity for therapeutic intervention in several human diseases. In HIV, ribosomal frameshifting controls the ratio of Gag and Gag-Pol, two polyproteins critical to the HIV life cycle. We have previously reported compounds able to selectively bind an RNA stemloop within the Gag-Pol mRNA; these compounds alter the production of Gag-Pol in a manner consistent with increased frameshifting. Importantly, they also display antiretroviral activity in human T-cells. Here, we describe new compounds with significantly reduced mol. weight, but with substantially maintained affinity and anti-HIV activity. These results suggest that development of more “ligand efficient” enhancers of ribosomal frameshifting is an achievable goal.

Bioorganic & Medicinal Chemistry published new progress about 77128-73-5. 77128-73-5 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-phenylpropanoic acid, and the molecular formula is C25H23NO4, Category: ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem