Month: November 2022

Liu, Renyong published the artcileImproved synthetic method of captopril, Recommanded Product: 3-Bromo-2-methylpropanoic acid, the publication is Shenyang Yaoke Daxue Xuebao (1997), 14(4), 262-264, database is CAplus.

An improved synthetic method for captopril using methacrylic acid as the starting material was described. Treatment of methacrylic acid with hydrogen bromide gave 3-bromo-2-methylpropanoic acid which underwent chlorination with thionyl chloride, condensation with L-proline gave N-(R,S-3-bromo-2-methylpropanoyl)-L-prolin (I). I was resolved into optically pure stereo-isomer, which was treated with sodium trithiocarbonate to give captopril.

Shenyang Yaoke Daxue Xuebao published new progress about 56970-78-6. 56970-78-6 belongs to bromides-buliding-blocks, auxiliary class Bromide,Carboxylic acid,Aliphatic hydrocarbon chain,Inhibitor, name is 3-Bromo-2-methylpropanoic acid, and the molecular formula is C4H7BrO2, Recommanded Product: 3-Bromo-2-methylpropanoic acid.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Li, Zonglong published the artcileThree-Dimensional Ionic Covalent Organic Frameworks for Rapid, Reversible, and Selective Ion Exchange, Related Products of bromides-buliding-blocks, the publication is Journal of the American Chemical Society (2017), 139(49), 17771-17774, database is CAplus and MEDLINE.

Covalent organic frameworks (COFs) have emerged as functional materials for various potential applications. However, the availability of three-dimensional (3D) COFs is still limited, and nearly all of them exhibit neutral porous skeletons. Here we report a general strategy to design porous pos. charged 3D ionic COFs by incorporation of cationic monomers in the framework. The obtained 3D COFs are built of 3-fold interpenetrated diamond net and show impressive surface area and CO₂ uptakes. The ion-exchange ability of 3D ionic COFs has been highlighted by reversible removal of nuclear waste model ions and excellent size-selective capture for anionic pollutants. This research thereby provides a new perspective to explore 3D COFs as a versatile type of ion-exchange materials.

Journal of the American Chemical Society published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C20H18BrN3, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Zhang, Rui published the artcileDesign, synthesis, and biological evaluation of tetrahydroisoquinolines derivatives as novel, selective PDE4 inhibitors for antipsoriasis treatment, Safety of 2-Bromoethyl Methyl Sulfone, the publication is European Journal of Medicinal Chemistry (2021), 113004, database is CAplus and MEDLINE.

In this study, a series of novel tetrahydroisoquinoline I [R¹ = CHO, CH₂CH₂SO₂Me, CH₂CO₂Me, etc.; configuration = S, Rac, R], II [R² = Bn, Et; R³ = CO₂Me, CHO, etc.; configuration = S, Rac] and III [R⁴ = Et, Me; R⁵ = 5-phenyl-1H-indolyl, 5-methoxy-1H-indolyl, etc.; configuration = S, Rac] were developed based on the crystal structure of PDE4D in complex with I [R¹ = CHO, configuration = S]. Anti-inflammatory effects of these compounds were evaluated and III [R⁴ = Me, R⁵ = 7-chloro-1H-indolyl, configuration = S] with high safety, permeability and selectivity, exhibited significant inhibitory potency against the enzymic activity of PDE4D and the TNF-α release from the LPS-stimulated RAW 264.7 and hPBMCs. Moreover, an in-vivo study demonstrated that a topical administration of III [R⁴ = Me, R⁵ = 7-chloro-1H-indolyl, configuration = S] achieved more significant efficacy than calcipotriol to improve the features of psoriasis-like skin inflammation. Overall, this study provided a basis for further development of tetrahydroisoquinoline-based PDE4 inhibitors against psoriasis.

European Journal of Medicinal Chemistry published new progress about 16523-02-7. 16523-02-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Sulfone,Aliphatic hydrocarbon chain, name is 2-Bromoethyl Methyl Sulfone, and the molecular formula is C8H16N2O, Safety of 2-Bromoethyl Methyl Sulfone.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Hou, Rui-zhen published the artcileHydrolysis of 5-(2-haloethyl)-1,3-dioxolanes, COA of Formula: C8H15BrO2, the publication is Jilin Daxue Ziran Kexue Xuebao (2000), 94-95, database is CAplus.

Three different kinds of 1,3-dioxolane compounds were hydrolyzed in an acidic condition. The results showed that tetrahydro-3-furanmethanol (I) was the main product. For example, hydrolysis of 5-(2-iodoethyl)-1,3-dioxolane with aqueous HCl gave 81% I.

Jilin Daxue Ziran Kexue Xuebao published new progress about 97845-58-4. 97845-58-4 belongs to bromides-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Bromide, name is 5-(2-Bromoethyl)-2,2-dimethyl-1,3-dioxane, and the molecular formula is C8H15BrO2, COA of Formula: C8H15BrO2.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Nykaza, Trevor V. published the artcileP^III/P^V=O Catalyzed Cascade Synthesis of N-Functionalized Azaheterocycles, Quality Control of 189748-25-2, the publication is Angewandte Chemie, International Edition (2020), 59(11), 4505-4510, database is CAplus and MEDLINE.

An organocatalytic method for the modular synthesis of diverse N-aryl and N-alkyl azaheterocycles (indoles, oxindoles, benzimidazoles, and quinoxalinediones) is reported. The method employs a small-ring organophosphorus-based catalyst (1,2,2,3,4,4-hexamethylphosphetane P-oxide) and a hydrosilane reductant to drive the conversion of ortho-functionalized nitroarenes into azaheterocycles through sequential intermol. reductive C-N cross coupling with boronic acids, followed by intramol. cyclization. This method enables the rapid construction of azaheterocycles from readily available building blocks, including a regiospecific approach to N-substituted benzimidazoles and quinoxalinediones.

Angewandte Chemie, International Edition published new progress about 189748-25-2. 189748-25-2 belongs to bromides-buliding-blocks, auxiliary class Bromide,Nitro Compound,Benzene,Ester, name is Methyl 2-(5-bromo-2-nitrophenyl)acetate, and the molecular formula is C9H8BrNO4, Quality Control of 189748-25-2.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kong, Qunshou published the artcileN-Arylimidazoliums as Highly Selective Biomimetic Antimicrobial Agents, HPLC of Formula: 111-83-1, the publication is Journal of Medicinal Chemistry (2022), 65(16), 11309-11321, database is CAplus and MEDLINE.

Antibiotic resistance has become one of the greatest health threats in the world. In this study, a charge-dispersed dimerization strategy is described for the antimicrobial peptide (AMP) mimics via a tunable cationic charge to improve the selectivity between prokaryotic microbes and eukaryotic cells. This strategy is demonstrated with a series of charge-dispersed AMP mimics based on N-arylimidazolium skeletons. These N-arylimidazolium AMP mimics show potent antibacterial activity against strains along with a low rate of drug resistance, good hemocompatibility, and low cytotoxicity. In addition to the elimination of planktonic bacteria, N-arylimidazolium AMP mimics can also inhibit biofilm formation and destroy the established biofilm. More importantly, methicillin-resistant Staphylococcus aureus (MRSA)-induced lung-infected mice can be effectively treated by the i.v. administration of N-arylimidazolium AMP mimic, which enable the design of N-arylimidazolium AMP mimics to offer an alternative avenue to eradicate drug-resistant bacterial infection.

Journal of Medicinal Chemistry published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, HPLC of Formula: 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Zhang, Chen published the artcileDesign, Synthesis, and Evaluation of a Series of Novel Benzocyclobutene Derivatives as General Anesthetics, Application of Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, the publication is Journal of Medicinal Chemistry (2017), 60(9), 3618-3625, database is CAplus and MEDLINE.

In the present work, a series of structurally novel benzocyclobutene derivatives were identified as general anesthetics through the loss of righting reflex (LORR) experiment on mice. Our initial efforts found compound 1a with a fused four-membered ring on the 2,3-position of the phenol ring could significantly improve the safety profile. Further SAR study revealed that small hydrogen bond acceptor (HBA) groups are optimal for good ED₅₀ along with much broader therapeutic windows, such as compounds 16b and 17. Present work demonstrates the superiority of this novel benzocyclobutene scaffold.

Journal of Medicinal Chemistry published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C6H5N3S, Application of Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Zhou, Jianwei published the artcileESR studies of the photolysis of (Ph₃P)₃Cu_nX_n and (Ph₃P)(biL)CuX, Application In Synthesis of 25753-84-8, the publication is Huaxue Xuebao (1987), 45(1), 74-6, database is CAplus.

Active radicals in the photolysis of (Ph₃P)₃Cu_nX_n (n = 1, 2; X = Cl, Br, I, CN) and (Ph₃P)(biL)CuX (X = Cl, Br, I; biL = 2,2′-dipyridyl, 1,10-phenanthroline) were investigated by combination of spin trapping technique, chromatog. and ESR spectroscopy. The formation of free radicals Ph. and Ph₂P. was confirmed by the hyperfine structure of the ESR spectra of the spin adducts formed between Ph. or Ph₂P. and phenyl-tert-butylnitrone.

Huaxue Xuebao published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C7H13ClNNaO5S, Application In Synthesis of 25753-84-8.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Ju, Cheng-Wei published the artcileModular Synthesis of Pentagonal and Hexagonal Ring-Fused NBN-Phenalenes Leading to an Excited-State Aromatization-Induced Structural Planarization Molecular Library, Quality Control of 89694-44-0, the publication is Journal of the American Chemical Society (2021), 143(15), 5903-5916, database is CAplus and MEDLINE.

Although polycyclic aromatic hydrocarbons (PAHs) with a nitrogen-boron-nitrogen (NBN) moiety have recently attracted tremendous interest due to their intriguing electronic and optoelectronic properties, all of the NBN-fused π-systems reported to date are called NBN-dibenzophenalenes and were synthesized by electrophilic aromatic substitution. The synthesis of NBN-phenalenes remains challenging, and transition-metal catalysis has never been utilized to construct NBN-embedded π-scaffolds. Herein, a palladium-catalyzed cyclization/bicyclization strategy was developed for the synthesis of diverse pentagonal and hexagonal ring-fused NBN-phenalenes and half-NBN-phenalenes. All of the NBN-embedded π-scaffolds presented in our paper are fluorescent in both solution and the solid state. Further investigations showed that the five-membered NBN rings exhibit the properties of traditional luminogens, while those with a six-membered NBN ring generally undergo photoinduced structural planarization (PISP) and exhibit different colors and quantum yields of fluorescence with different concentrations in solution Time-resolved spectroscopy and TD-DFT calculations revealed that excited-state aromatization is the driving force for PISP in hexagonal ring-fused NBN-π systems, leading to the formation of excimers. Notably, the scope of PISP compounds is still quite limited, and PISP has never been observed in NBN-π systems before. These hexagonal ring-fused NBN-π systems constitute a novel PISP mol. library and appear to be a new class of aggregation-induced excimer emission (AIEE) materials. Finally, the AIEE behavior of these six-membered NBN rings was applied to the detection of nitro explosives, achieving excellent sensitivity. In general, this work provides a new viewpoint for synthesizing NBN-fused π-systems and understanding the excited-state motion of luminogens.

Journal of the American Chemical Society published new progress about 89694-44-0. 89694-44-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 2-Bromo-5-methoxybenzene boronic acid, and the molecular formula is C7H8BBrO3, Quality Control of 89694-44-0.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Fetin, P. A. published the artcileComb-like polyelectrolytes – new surfactants with controlled solubilization capacity, Safety of 1-Bromododecane, the publication is Journal of Molecular Liquids (2022), 119085, database is CAplus.

Cationic surface-active monomers with 11-acryloyloxyundecyl tail in quaternary ammonium group and the corresponding comb-like polyelectrolytes are investigated. The sources of quaternary ammonium were aliphatic amines (trimethylamine and triethylamine) or aromatic and aliphatic cyclic amines (N-methylpiperidine, N-methylmorpholine, pyridine, quinoline). The monomer to polymer transformation increases the solubilization capacity of surfactant in one order of magnitude. The comb-like polyelectrolytes are capable to effective solubilization of hydrophobic probe over the wide concentration range including extremely low concentrations of the polymer. There aren’t any precipitations of comb-like polyelectrolytes with temperature decrease unlike of many ionic low-mol. weight surfactants. Solubilization capacity of the hydrophobic probe by comb-like polyelectrolyte is slightly influenced by the mol. weight of the polymer and is determined by the nature of the ionic group of comb-like polyelectrolyte and counterion.

Journal of Molecular Liquids published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, Safety of 1-Bromododecane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary