Category: ethers-buliding-blocks

Megemont, C. published the artcileComparative activities of some local anesthetics in modifying the effect of acetylcholine in presence of the isolated ventricle of Helix pomatia and the denervated dorsal muscle of Hirudo medicinalis, Application of 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, the publication is Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales (1960), 64-6, database is CAplus.

In low concentrations all of 11 diverse local anesthetics augmented the neg. chronotropic and inotropic effects of acetylcholine on the isolated snail ventricle, and all but 2 antagonized the effect of acetylcholine on the denervated leech muscle.

Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales published new progress about 637-58-1. 637-58-1 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, and the molecular formula is C17H28ClNO3, Application of 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride.

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

Zampella, Angela published the artcileStereoselective synthesis of (2R,3R,4R)-3-hydroxy-2,4,6-trimethylheptanoic acid and determination of the absolute stereochemistry of the natural product from callipeltin A, Quality Control of 99438-28-5, the publication is Tetrahedron: Asymmetry (2002), 13(12), 1237-1239, database is CAplus.

A revised stereostructure of 3-hydroxy-2,4,6-trimethylheptanoic acid, the β-hydroxy acid that acylates the N-terminus of callipeltin A, is proposed on the basis of anal. of J-coupling in the ¹H NMR spectrum of the acetonide derivative obtained from the acid hydrolyzate of callipeltin A. The proposed structure was definitively confirmed by enantioselective synthesis.

Tetrahedron: Asymmetry published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C7H13NO2, Quality Control of 99438-28-5.

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

Ma, Xuerui published the artcileTartramide Ligands for Copper-Catalyzed N-Arylation at Room Temperature, HPLC of Formula: 6850-57-3, the publication is Advanced Synthesis & Catalysis (2022), 364(12), 2023-2031, database is CAplus.

Readily accessible tartramide ligands R¹NHC(O)CH(OH)CH(OH) C(O)NHR (R = Ph, Bn, cyclohexyl, etc.)have been demonstrated to promote copper-catalyzed N-arylation under mild conditions. In addition, the coupling protocol employs cheap and readily available pre-catalyst, ligand, and base (NaOH), and overcomes many current limitations often associated with Ullmann coupling: it can be run with low catalyst loadings, does not require the use of excess amine, operates at room temperature, is fully homogeneous, and displays improved tolerance to air and moisture. Detailed kinetic studies using reaction progress kinetic anal. (RPKA) methods have provided insight into the factors influencing the reaction rate in terms of impact of ligand structure, reactant/catalyst dependence and catalyst (in)stability. These kinetic insights have been used in a quality-by-design approach for further optimization of the reaction protocol. The reaction scope was extended to 22 examples, showing broad applicability for a wide range of substituted aryl iodides ArI (Ar = 3,5-dimethylphenyl, 4-chlorophenyl, 3-cyanophenyl, etc.) with both primary and secondary amines R¹NHR² (R¹ = H); R² = -(CH₂)₂O(CH₂)₂-, -(CH₂)₂N(CH₃)(CH₂)₂-, -(CH₂)₅-, etc.

Advanced Synthesis & Catalysis 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, HPLC of Formula: 6850-57-3.

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

Blanco-Brieva, Gema published the artcileSelective decomposition of hydrogen peroxide in the epoxidation effluent of the HPPO process, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Catalysis Today (2012), 187(1), 168-172, database is CAplus.

This work describes the selective H₂O₂ decomposition in the exit stream of the epoxidation reactor employed in the Hydrogen Peroxide-Propylene Oxide (HPPO) process. Pd/Al₂O₃ and Pt/Al₂O₃ catalysts were tested. The effects of the reaction temperature and the pH of the solution on catalyst performance were investigated. It was found that the Pt catalyst is much more active than its Pd counterpart. An increase in the temperature and the pH of the solution resulted in an increase in the H₂O₂ decomposition rate; however, a parallel increase of byproducts from PO was also observed Working with a Pt/Al₂O₃ catalyst under optimized reaction conditions (333 K, pH = 7), hydrogen peroxide can be completely decomposed at reaction times of 120 min with no byproducts produced from propylene oxide.

Catalysis Today 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

Blanco-Brieva, Gema published the artcileSelective hydrogenation of hydrogen peroxide in the epoxidation effluent of the HPPO process, SDS of cas: 1589-47-5, the publication is Catalysis Communications (2012), 83-87, database is CAplus.

This work describes selective H₂O₂ hydrogenation in the exit stream of the epoxidation reactor employed in the Hydrogen Peroxide-Propylene Oxide (HPPO) process. Pd/Al₂O₃ and Pt/Al₂O₃ catalysts were employed for this purpose. The effect of the reaction temperature, catalyst amount and hydrogen partial pressure on catalyst performance were investigated. It was found that the Pt catalyst is much more active than its Pd counterpart. Under optimized reaction conditions, the hydrogen peroxide present in the exit stream can be completely hydrogenated with the Pt catalyst with a reaction time of no longer than 20 min and an almost negligible amount of byproducts derived from propylene oxide.

Catalysis Communications 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, SDS of cas: 1589-47-5.

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

Zhang, Shengping published the artcileCyclization of linear tetrapeptides containing N-methylated amino acids by using 1-propanephosphonic acid anhydride, SDS of cas: 77128-73-5, the publication is European Journal of Organic Chemistry (2017), 2017(1), 149-158, database is CAplus.

The cyclization of the linear tetrapeptides sequence H-NMePhe-Xaa¹-NMePhe-Xaa²-OH (for which Xaa¹ = Xaa² = Ile, Val, or Leu; Xaa¹ = Val; Xaa² = Ile or Leu) by using 1-propanephosphonic acid anhydride was explored. An unanticipated finding is the cyclization towards cyclotetrapeptide conformers (kinetic products) that were highly prone to hydrolysis and that slowly interconvert into the more stable trans,cis,trans,cis (tctc) conformers (thermodn. products).

European Journal of Organic 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 C6H12F3NO5S, SDS of cas: 77128-73-5.

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

Delbeke, F. T. published the artcileDetection of some local anesthetics in horse urine and plasma by gas-liquid chromatography, COA of Formula: C17H28ClNO3, the publication is Journal of Chromatography (1981), 206(3), 594-9, database is CAplus and MEDLINE.

A gas-liquid chromatog. (GLC) method using a N specific detector is described for the screening of several local anesthetics in horse plasma and urine. The glass columns used were: 5% OV-101, 3% OV-7, and 3% OV-25 on Chromosorb W (80-100 mesh). Blank plasma or urine samples were spiked with the local anesthetics, echothiophate iodide was added followed by NH₄⁺/NH₃ buffer (pH 9.4) and the mixture extracted with cyclohexane. The residue from the organic layer was used for GLC anal. Detection limits and percentage recoveries for the 11 anesthetics studied are given for urine and plasma.

Journal of Chromatography published new progress about 637-58-1. 637-58-1 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, and the molecular formula is C17H28ClNO3, COA of Formula: C17H28ClNO3.

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

Vladimirtsev, I. F. published the artcilePreparation and biological activity of some thiourea derivatives, Computed Properties of 14807-75-1, the publication is Fiziologicheski Aktivnye Veshchestva (1966-1992) (1975), 120-3, database is CAplus.

H2NC(:NH)SO2H (I) reacted with aqueous HCl at 60-70° to give 37.8% S2[C(:NH)NH2.HCl]2 (II), which reacted with NaOEt to give 100% S, 95% thiourea (III), and 77% S[C(:NH)NH2.HCl]2 (IV). Urea, I, IV, and H2NC(:NH)S(O)SC(:NH)NH2.2H2O inhibited the growth of lettuce, oat, and cucumber sprouts at 0.01%, but stimulated growth at 0.0001%; the opposite effect was observed with III.

Fiziologicheski Aktivnye Veshchestva (1966-1992) published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C4H10Br2CoO2, Computed Properties of 14807-75-1.

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

Wojcik-Pszczola, Katarzyna published the artcilePan-Phosphodiesterase Inhibitors Attenuate TGF-β-Induced Pro-Fibrotic Phenotype in Alveolar Epithelial Type II Cells by Downregulating Smad-2 Phosphorylation, Application In Synthesis of 6850-57-3, the publication is Pharmaceuticals (2022), 15(4), 423, database is CAplus and MEDLINE.

Airway remodeling is a pathol. process that accompanies many chronic lung diseases. One of the important players in this process are epithelial cells, which under the influence of pro-inflammatory and pro-fibrotic factors present in the airway niche, actively participate in The remodeling process by increasing extracellular matrix secretion, acquiring migration properties, and overproducing pro-fibrotic transducers. Here, we investigated the effect of three new 8-arylalkylamino- and 8-alkoxy-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl-N-(5-(tertbutyl)-2-hydroxyphenyl)butanamides (1, 2, and 3), representing prominent pan-phosphodiesterase (pan-PDE) inhibitors on transforming growth factor type β (TGF-β)-induced alveolar epithelial type II cells (A549 cell line) of a pro-fibrotic phenotype. Our results demonstrate for the first time the strong activity of pan-PDE inhibitors in the prevention of TGF-β-induced mesenchymal markers′ expression and A549 cells′ migration. We also showed an increased p-CREB and decreased p-Smad-2 phosphorylation in TGF-β-induced A549 cells treated with 1, 2, and 3 derivatives, thereby confirming a pan-PDE inhibitor mesenchymal phenotype reducing effect in alveolar epithelial type II cells via suppression of the canonical Smad signaling pathway. Our observations confirmed that PDE inhibitors, and especially those active against various isoforms involved in the airway remodeling, constitute an interesting group of compounds modulating the pro-fibrotic response of epithelial cells.

Pharmaceuticals 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 C15H16O3, Application In Synthesis of 6850-57-3.

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

Dao, Pham Duy Quang published the artcileSynthesis of Trinuclear Benzimidazole-Fused Hybrid Scaffolds by Transition Metal-Free Tandem C(sp²)-N Bond Formation under Microwave Irradiation, Application of 2-Methoxynaphthalene, the publication is European Journal of Organic Chemistry (2021), 2021(29), 4088-4098, database is CAplus.

The compounds 2-(2-bromoaryl)benzimidazoles e.g., 2-(2-bromocyclohex-1-en-1-yl)-1H-1,3-benzodiazole and 2-(2-bromovinyl)benzimidazoles e.g., 2-[(1Z)-1-bromo-1-phenylprop-1-en-2-yl]-1H-1,3-benzodiazole have been coupled and cyclized with 2-methoxybenzimidazoles e.g., 2-methoxy-1H-1,3-benzodiazole and 2-aryloxybenzimidazoles e.g., 2-methoxy-1H-naphtho[2,3-d]imidazole as building blocks in the presence of a base under microwave irradiation to give a class of trinuclear N-fused hybrid scaffolds, benzo[4,5]imidazo[1,2-a]benzo[4,5]imidazo[1,2-c]quinazolines e.g., I and benzo[4,5]imidazo[1,2-a]benzo[4,5]imidazo[1,2-c]pyrimidines e.g., II, resp., in good yields. The compounds 2-(2-bromoaryl)imidazoles e.g., 2-(2-bromocyclohex-1-en-1-yl)-4,5-diphenyl-1H-imidazole and 2-(2-bromovinyl)imidazoles e.g., (Z)-2-(1-bromo-1-phenylprop-1-en-2-yl)-4,5-diphenyl-1H-imidazole also reacted with 2-methoxybenzimidazoles (e.g., 2-methoxy-1H-1,3-benzodiazole/e.g., 2-methoxy-1H-naphtho[2,3-d]imidazole) in the presence of base under microwave irradiation to give a class of trinuclear N-fused hybrid scaffolds, benzo[4,5]imidazo[1,2-a]imidazo[1,2-c]quinazolines e.g., III and benzo[4,5]imidazo[1,2-a]imidazo[1,2-c]pyrimidines e.g., IV, resp., in similar yields. This process seems to proceed via an initial C(sp²)-N coupling by an addition-elimination nucleophilic aromatic substitution (S_NAr) and subsequent cyclization accompanied by extrusion of alcs.

European Journal of Organic Chemistry published new progress about 93-04-9. 93-04-9 belongs to ethers-buliding-blocks, auxiliary class Naphthalene,Ether, name is 2-Methoxynaphthalene, and the molecular formula is C11H10O, Application of 2-Methoxynaphthalene.

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