Category: bromides-buliding-blocks

Li, Hui published the artcileAllosteric Inhibitors of Hepatitis C Polymerase: Discovery of Potent and Orally Bioavailable Carbon-Linked Dihydropyrones, Product Details of C7H5Br2F, the publication is Journal of Medicinal Chemistry (2007), 50(17), 3969-3972, database is CAplus and MEDLINE.

The discovery and optimization of a novel class of carbon-linked dihydropyrones as allosteric HCV NS5B polymerase inhibitors are presented. Replacement of the sulfur linker atom with carbon reduced compound acidity and greatly increased cell permeation. Further structure-activity relationship (SAR) studies led to the identification of compounds, exemplified by (I) and (II), with significantly improved antiviral activities in the cell-based replicon assay and favorable pharmacokinetic profiles.

Journal of Medicinal Chemistry published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C7H5Br2F, Product Details of C7H5Br2F.

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

Negishi, Ei-ichi published the artcileA Novel, Highly Selective, and General Methodology for the Synthesis of 1,5-Diene-Containing Oligoisoprenoids of All Possible Geometrical Combinations Exemplified by an Iterative and Convergent Synthesis of Coenzyme Q₁₀, Recommanded Product: (4-Bromobut-1-yn-1-yl)trimethylsilane, the publication is Organic Letters (2002), 4(2), 261-264, database is CAplus and MEDLINE.

A truly general, versatile, and highly regio- and stereoselective methodol. for the synthesis of terpenoids containing 1,5-diene units of E and/or Z geometry critically involves Pd-catalyzed homoallyl- and homopropargyl-alkenyl coupling and Zr-catalyzed carboalumination of alkynes. By using this methodol., coenzyme Q₁₀ (I), (E,Z,E)-geranylgeraniol (II), and other natural or unnatural compounds have been synthesized efficiently.

Organic Letters published new progress about 69361-41-7. 69361-41-7 belongs to bromides-buliding-blocks, auxiliary class PROTAC Linker,Aliphatic Linker, name is (4-Bromobut-1-yn-1-yl)trimethylsilane, and the molecular formula is C7H13BrSi, Recommanded Product: (4-Bromobut-1-yn-1-yl)trimethylsilane.

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

Li, Yan published the artcileLigand-Controlled Cobalt-Catalyzed Regiodivergent Alkyne Hydroalkylation, Recommanded Product: Cobalt(II) dibromo(1,2-dimethoxyethane), the publication is Journal of the American Chemical Society (2022), 144(30), 13961-13972, database is CAplus and MEDLINE.

Herein, a ligand-controlled cobalt-catalyzed regiodivergent alkyne hydroalkylation was reported. The sensible selection of bisoxazoline and pyridine-oxazoline ligands led to reliable and predictable protocols that provided (E)-1,2-disubstituted and 1,1-disubstituted alkenes with high E/Z stereoselectivity and regioisomeric ratio starting from identical terminal alkyne and alkyl halide substrates and produced trisubstituted alkenes in the case of internal alkynes. This method exhibited a broad scope for terminal and internal alkynes with a wide range of activated and unactivated alkyl halides and shows excellent functional group compatibility.

Journal of the American Chemical Society published new progress about 18346-57-1. 18346-57-1 belongs to bromides-buliding-blocks, auxiliary class Cobalt, name is Cobalt(II) dibromo(1,2-dimethoxyethane), and the molecular formula is C4H10Br2CoO2, Recommanded Product: Cobalt(II) dibromo(1,2-dimethoxyethane).

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

Li, Zhong-Yuan published the artcileRuthenium-Catalyzed meta-Selective C-H Mono- and Difluoromethylation of Arenes through ortho-Metalation Strategy, Application of Ethylbromofluoroacetate, the publication is Chemistry – A European Journal (2017), 23(14), 3285-3290, database is CAplus and MEDLINE.

The first example for the ruthenium-catalyzed ligand-directed meta-selective C-H mono- and difluoromethylation is developed, affording a variety of new meta-mono- and difluoromethylated 2-phenylpyridines, 2-phenylpyrimidines, and 1-phenylpyrazoles in moderate-to-good yields. This new transformation exhibits broad substrate scope, good functional group tolerance, and high efficiency, and offers a practical approach to synthesize mono- and difluoromethylated arenes. Mechanistic studies indicate that a reaction pathway involving palladium-initiated radical species is involved in the catalytic cycle. The new dual catalytic system consisting of compatible ruthenium(II) and palladium(0) complexes enables the key processes of C-H activation and mono-/difluoromethyl-radical formation to occur and achieves the meta-selective functionalization efficiently. In addition, the present protocol can also be extended to non-fluoromethylation.

Chemistry – A European Journal published new progress about 401-55-8. 401-55-8 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Aliphatic hydrocarbon chain,Ester, name is Ethylbromofluoroacetate, and the molecular formula is C4H6BrFO2, Application of Ethylbromofluoroacetate.

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

Liu, Xingqiang published the artcileA Coordination Complex System for Generic, Ultrafast, and Sensitive Multimode Fluorescent Staining of Biomolecules, HPLC of Formula: 52431-30-8, the publication is Inorganic Chemistry (2012), 51(1), 188-192, database is CAplus and MEDLINE.

Gel electrophoresis staining methodologies documented thus far are largely utilized in a biomol. context-dependent manner. The authors report herein the development of a generic, ultrafast, and sensitive multimode fluorescent system for the efficient identification of DNA, RNA, and proteins. Interaction between a pos. charged, planar ligand-based coordination complex with partner biomol. leads to aggregation-induced fluorescence quenching and allows for the image contrast generation within one minute. Alternatively, successive reactions of the biomol.-loaded gel with cation and ligand, in either order of sequence, provide an equally effective staining efficacy. Image contrast reversal is accomplished through a facile washing or photobleaching procedure. The versatility in the applicable target species and signal generation modes provides a hint at the design of novel staining structures and potentially enables the high-throughput readout of biomols.

Inorganic Chemistry published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, HPLC of Formula: 52431-30-8.

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

Pan, Xiujiao published the artcileBiosafety-inspired structural optimization of triazolium ionic liquids based on structure-toxicity relationships, Related Products of bromides-buliding-blocks, the publication is Journal of Hazardous Materials (2022), 424(Part_C), 127521, database is CAplus and MEDLINE.

Ionic liquids (ILs), owing to their low vapor pressure and excellent solvating ability, are being increasingly applied in various industries to replace highly toxic organic solvents. They mainly pollute aquatic environment and soils, directly endangering eco-environment and human health. Therefore, it is critical to understand and optimize structural motifs of ILs with reduced toxicity. Considering human oral exposure is the major route, our investigations employed a human cell panel (modeling oral exposures) including human stomach (GES-1), intestinal (FHC), liver (HepG2) and kidney (HEK293) cells using a series of exptl. and computational approaches to explore the cytotoxicity and mol. mechanism of ILs. We discovered that the cytotoxicity of triazolium and imidazolium ILs was human cell line-dependent with cytotoxicity in an order of FHC > GES-1 > HepG2 > HEK293. For this reason, a toxicity assay using a single cell line was highly inappropriate. Compared to anions (Br-, OTs-, OTMBS-) we tested, the cation of ILs played a major role in causing cytotoxicity. Ionic liquids with cations having longer hydrophobic sidechains (IL09 vs. IL01) readily insert into cell membranes with enhanced membrane and lipidomic perturbations, induce cytotoxicity by triggering cell cycle arrest and apoptosis. Reducing sidechain length and incorporating three nitrogen atoms (triazolium) instead of two (imidazolium) in the cation core alleviated cytotoxicity by reducing cell membrane perturbations and cell function interference. These findings provide important guiding principles for the design of the next-generation of “green” and safe ILs.

Journal of Hazardous Materials 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, Related Products of bromides-buliding-blocks.

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

Zhang, Wen-Jin published the artcileSynthesis and identification of quinoline derivatives as topoisomerase I inhibitors with potent antipsoriasis activity in an animal model, Category: bromides-buliding-blocks, the publication is Bioorganic Chemistry (2019), 102899, database is CAplus and MEDLINE.

Psoriasis is a chronic inflammatory and immune-mediated skin disease. Although certain agents have shown clin. success in treating psoriasis, development of safe and effective strategies for the treatment of this condition remains important. Research suggests that DNA topoisomerase I (Topo I) inhibitors may have potent psoriasis-ameliorating effects. Here, 25 quinoline derivatives were synthesized and identified as Topo I inhibitors. These compounds inhibited the 12-O-tetradecanoylphorbol-13-acetate-induced mouse ear inflammation. The most potent analogs, 5i and 5l, suppressed the expression of inflammatory cytokines in lipopolysaccharide-stimulated HaCaT cells. Addnl., the lead compounds significantly improved imiquimod-induced psoriasis-like inflammation in mice. Moreover, the expression levels of cytokines and inflammatory mediators, such as interleukin (IL)-17A, IL-22, IL-23, nuclear factor-κB subunit p65, tumor necrosis factor-α, and interferon-γ, were dramatically inhibited in the dorsal skin of 5i- and 5l-treated mice. These findings indicate that the inhibition of Topo I activity may potentially be an effective strategy for psoriasis treatment.

Bioorganic Chemistry published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C42H63O3P, Category: bromides-buliding-blocks.

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

Song, Shizhu published the artcileImidazolium ionic Liquid-Regulated Sub-5-nm Pt(1 1 1) with a stable configuration anchored on hollow carbon nanoshells for efficient oxygen reduction, Name: 1-Bromododecane, the publication is Journal of Colloid and Interface Science (2022), 606(Part_1), 177-191, database is CAplus and MEDLINE.

Here, N-doped hollow carbon sphere (NHCS)-supported (1 1 1)-plane-engineered sub-5-nm Pt (Pt-NHCS) catalysts regulated precisely by imidazolium ionic liquids were synthesized successfully and used to catalyze oxygen reduction The (1 1 1)-plane engineered Pt nanocrystals with a diameter of 4.5 ± 0.5 nm were homogeneously deposited on the 3-dimensional spherical nanoshells. The resulting Pt nanocrystals anchored on the carbon skeleton exhibit a stable configuration in both alk. and acid electrolytes with the help of imidazolium cations and pyrolysis. Among all as-prepared catalysts, the optimized Pt-NHCS shows remarkable long-term durability. Specifically, Pt-NHCS maintains 95.3% of the original c.d. after 10,000 potential cycles, while Pt/C benchmarks exhibit a retention of 78.5%. Accelerated durability test results indicate that Pt-NHCS exhibits a high efficiency of 96% in comparison with initial c.d., while a value of 86% for Pt/C. D. functional theory calculations demonstrate that reactive Pt(1 1 1) planes with well-defined Schottky defects and vacancies adsorb and activate oxygen mol. rapidly while desorbing the reaction intermediates.

Journal of Colloid and Interface Science 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 C19H14O2, Name: 1-Bromododecane.

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

Li, Jiuyan published the artcileNovel Thieno-[3,4-b]-Pyrazines Cored Dendrimers with Carbazole Dendrons: Design, Synthesis, and Application in Solution-Processed Red Organic Light-Emitting Diodes, Recommanded Product: 2,5-Dibromo-3,4-dinitrothiophene, the publication is ACS Applied Materials & Interfaces (2011), 3(6), 2099-2107, database is CAplus and MEDLINE.

A series of novel red-emitting thieno-[3,4-b]-pyrazine-cored mols. containing oligo-carbazole dendrons (called C1-TP, C2-TP) are synthesized. Their photophys., electrochem., and electroluminescent properties are investigated. The peripheral carbazolyl units facilitate the hole transporting ability and inhibit the intermol. interactions, but quench the fluorescence of the thieno-[3,4-b]-pyrazine core through intramol. charge transfer (ICT). Introduction of a polyphenyl spacer between the core and the first generation carbazole dendrons, i.e., C-DTP, decreases the ICT efficiency. In addition to providing the site-isolation effect on the planar emissive core, these bulky dendrons enable these mols. to be solution processable. As a result, efficient OLEDs with saturated red emission are fabricated by spin coating technique using these dendritic materials as nondoped emitting layer. C-DTP exhibits much better device performance than C1-TP and C2-TP, while the small mol. reference compound containing neither the spacer nor the carbazole dendrons (TP) fails to transmit pure red emission under identical conditions. A brightness of 925 cd m^-2 and a luminous efficiency of 0.53 cd A^-1 are obtained for C-DTP, which are comparable with OLEDs fabricated from thieno-[3,4-b]-pyrazine-based counterparts by the vacuum deposition method or those assembled with other red fluorescent dendrimers via the solution processing method.

ACS Applied Materials & Interfaces published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, Recommanded Product: 2,5-Dibromo-3,4-dinitrothiophene.

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

Zhuang, Zhuoxin published the artcileMelt and nucleation reinforcement for stereocomplex crystallites in poly(L-lactide)/lignin-grafted-poly(D-lactide) blend, Recommanded Product: 1-Bromododecane, the publication is European Polymer Journal (2022), 111072, database is CAplus.

Lignin-grafted-poly(D-lactide) (LGPD) with two different poly(D-lactide) (PDLA) block lengths (1100 and 2000 Da), denoted as LGPD_L and LGPD_H resp., were synthesized by ring opening polymerization using dodecylated lignin as initiator. They were then blended with poly(L-lactide) (PLLA) to improve its crystallization, mech. properties and UV-absorbance properties. It was found that stereocomplex (SC) crystallites could be formed in both PLLA/LGPD blends, and the crystallization rate of PLLA/LGPD_H was faster than that of PLLA/LGPD_L because of the longer PDLA block length. Both in the non-isothermal and isothermal crystallization process, the crystallization of PLLA in the PLLA/LGPD_H blend was the fastest when the ratio of LGPD_H was 3%. SC crystallites in the PLLA/LGPD_H blends also showed broader melting ranges and higher final melting temperatures comparing to the blends of PLLA and 4-armed PDLA (4a-PDLA), whose number of PDLA arms and mol. weight was similar to LGPD_H. These results proved that the lignin structure grafted by the PDLA arms could affect the state of SC crystallites and their acceleration effect on the crystallization of PLLA in the blend. The degradation behavior showed that the degradation rate of the LGPD_H-5% blend in the final stage of degradation (about 24 h) was the slowest comparing to other blends. Besides, the PLLA/LGPD blends had better tensile strength and UV-absorbance properties than neat PLLA.

European Polymer Journal 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 C3H6O2, Recommanded Product: 1-Bromododecane.

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