Category: bromides-buliding-blocks

Wang, Degui published the artcileFree radical induced oxidation of phloroglucinol. A pulse radiolysis and EPR study, Category: bromides-buliding-blocks, the main research area is radical induced oxidation phloroglucinol ESR; pulse radiolysis phloroglucinol.

Phloroglucinol (I)-derived radicals have been studied using pulse radiolysis and EPR spectroscopy. I (pKa = 8.0) and its anion (II) (pKa = 9.2) have phenolic structures while the 3,5-dihydrocyclohex-2,5-dienone structure predominates in the dianion (III). The neutral OH-adduct radicals (IIIa; λmax = 345 nm) rapidly eliminate water (k = 2 × 105 s-1) yielding the 3,5-dihydroxyphenoxyl radical (IV; λmax = 495 nm, pKa = 6.5). IV and its monoanion (V; λmax = 550 nm, pKa = 8.6), its isomer VI, derived from III (λmax > 800 nm), and the dianion (VII; λmax = 640 nm) can be generated directly with the N3 radical (k = 1.4 × 109 dm3 mol-1 s-1 at pH 6). All four radicals have been characterized by EPR. VI reacts with the phloroglucinol monoanion II with a rate constant of 2 × 107 dm3 mol-1 s-1. Formation of an adduct is excluded by EPR. Therefore, electron transfer from II to VI is favored as an explanation for this reaction. IV does not react with O2 (k < 4 × 105 dm3 mol-1 s-1); the anions V and VI do so quite rapidly (k = 2.1 × 108 and 1.9 × 108 dm3 mol-1 s-1, resp.) and at pH 7, O2 is consumed with G = 15 × 10-7 mol J-1. Although Br2•- mainly produces radicals IV and V, bromination occurs with an efficiency of at least 10%. Journal of the Chemical Society, Perkin Transactions 3: Physical Organic Chemistry published new progress about Autoxidation kinetics. 84743-77-1 belongs to class bromides-buliding-blocks, name is 2-Bromobenzene-1,3,5-triol, and the molecular formula is C6H5BrO3, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Briand, Loic published the artcileCharacterization of a chemosensory protein (ASP3c) from honeybee (Apis mellifera L.) as a brood pheromone carrier, HPLC of Formula: 56523-59-2, the main research area is chemosensory protein sequence characterization honey bee.

We report the cloning of a honeybee chemosensory proteins (CSP) gene called ASP3c, as well as the structural and functional characterization of the encoded protein. The protein was heterologously secreted by the yeast Pichia pastoris using the native signal peptide. ASP3c disulfide bonds were assigned after trypsinolysis followed by chromatog. and mass spectrometry combined with microsequencing. The pairing (Cys(I)-Cys(II), Cys(III)-Cys(IV)) was found to be identical to that of Schistocerca gregaria CSPs, suggesting that this pattern occurs commonly throughout the insect CSPs. CD measurements revealed that ASP3c mainly consists of α-helixes, like other insect CSPs. Gel filtration anal. showed that ASP3c is monomeric at neutral pH. Using ASA, a fluorescent fatty acid anthroyloxy analog as a probe, ASP3c was shown to bind specifically to large fatty acids and ester derivatives, which are brood pheromone components, in the micromolar range. It was unable to bind tested general odorants and other tested pheromones (sexual and nonsexual). This is the 1st report on a natural pheromonal ligand bound by a recombinant CSP with a measured affinity constant

European Journal of Biochemistry published new progress about Antenna (anatomical). 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, HPLC of Formula: 56523-59-2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Shibuya, Kimiyuki published the artcileDesign, synthesis and pharmacology of aortic-selective acyl-CoA: Cholesterol O-acyltransferase (ACAT/SOAT) inhibitors, Application of 15-Bromopentadecanoic acid, the main research area is ACAT SOAT inhibitor aorta selectivity antiatherosclerotic lipid accumulation atherosclerosis; ACAT-1 (aortic ACAT); ACAT-2 (intestinal ACAT); Acyl-CoA:cholesterol O-acyltransferase (ACAT/SOAT); Atherosclerosis; Cholesterol esters (CEs); Double-induced fit; Isoform-selectivity; Lipid-accumulation areas.

We describe our mol. design of aortic-selective acyl-CoA:cholesterol O-acyltransferase (ACAT, also abbreviated as SOAT) inhibitors, their structure-activity relationships (SARs) and their pharmacokinetic (PK) and pharmacol. profiles. The connection of two weak ligands-N-(2,6-diisopropylphenyl)acetamide (50% inhibitory concentration [IC50] = 8.6 μM) and 2-(methylthio)benzo[d]oxazole (IC50 = 31 μM)-via a linker comprising a 6 methylene group chains yielded a highly potent mol., 9-(benzo[d]oxazol-2-ylthio)-N-(2,6-diisopropylphenyl)nonanamide (3h) that exhibited high potency (IC50 = 0.004 μM) toward aortic ACAT. This head-to-tail design made it possible to markedly enhance the activity to 2150- to 7750-fold and to discriminate the isoform-selectivity based on the double-induced fit mechanism. At doses of 1 and 3 mg/kg, 3h significantly decreased the lipid-accumulation areas in the aortic arch to 74 and 69%, resp. without reducing the plasma total cholesterol level in high fat- and cholesterol-fed F1B hamsters. Here, we demonstrate the antiatherosclerotic effect of 3h in vivo via its direct action on aortic ACAT and its powerful modulator of cholesterol level. This mol. is a potential therapeutic agent for the treatment of diseases involving ACAT-1 overexpression.

Bioorganic & Medicinal Chemistry published new progress about Antiatherosclerotics. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Application of 15-Bromopentadecanoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ravindernath, Anisetti published the artcileSynthesis and biological evaluation of benzo[d]imidazolyl chromeno[2,3-d]pyrimidinones, Quality Control of 156089-67-7, the main research area is benzimidazolyl chromenopyrimidinone preparation antibacterial antifungal antioxidant activity SAR.

A series of benzo[d]imidazolyl chromeno[2,3-d]pyrimidnones I (R = H, OMe, Br, Cl, R’ = H; R = R’ =Br) were described. The key intermediate 2-cyano-N-(2-mercapto-1H-benzo[d]imidazol-5-yl)acetamide (II) is obtained by reacting 5-amino-2-mercaptobenzimidazole with Et cyanoacetate. Compound II on reaction with substituted salicylaldehydes afforded 2-imino-N-(2-mercapto-1H-benzo[d]imidazol-5-yl)-2H-chromene-3-carboxamides III (R = H, OMe, Br, Cl, R’ = H; R = R’ =Br) in good yields. Compounds III (R = H, OMe, Br, Cl, R’ = H; R = R’ =Br) on condensation with formalin furnished the title compounds viz., 3-(2-mercapto-1H-benzo[d]imidazol-5-yl)-2H-chromeno[2,3-d]pyrimidin-4(3H)-ones I (R = H, OMe, Br, Cl, R’ = H; R = R’ =Br). All the synthesized compounds were screened for their anti-microbial and anti-oxidant activities.

Medicinal Chemistry Research published new progress about Antibacterial agents. 156089-67-7 belongs to class bromides-buliding-blocks, name is 4,5-Dibromo-2-hydroxybenzaldehyde, and the molecular formula is C7H4Br2O2, Quality Control of 156089-67-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Nan published the artcileModification of 5-methylphenanthridium from benzothiazoles to indoles as potent FtsZ inhibitors: Broadening the antibacterial spectrum toward vancomycin-resistant enterococci, Synthetic Route of 74317-85-4, the main research area is vancomycin resistant Enterococci 5 methylphenanthridium benzothiazoles FtsZ inhibitors; Antibacterial activity; Benzothiazolyl-5-methylphenanthridium; FtsZ inhibitors; Indolyl-5-methylphenanthridium; Mechanism of action.

The death caused by pathogenic bacteria has always been a severe threat to mankind. The prevalence of drug resistance among bacteria underscores an urgent goal for new antibacterial agents with novel mode of action. Here we first designed and synthesized a class of benzothiazolyl-5-methylphenanthridium derivatives and evaluated their antibacterial activity. On this basis, we further designed and synthesized another class of novel indolyl-5-methylphenanthridium derivatives by optimizing the benzothiazolyl-5-methylphenanthridium core and evaluated their antibacterial activity targeting the bacterial cell division protein FtsZ. The results showed that the indolyl-5-methylphenanthridium derivatives had greatly improved activity against various drug-resistant bacterial strains including methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus (VRE). Among them, compound C5 displayed excellent antibacterial activity against susceptible (MIC = 1μg/mL), methicillin-resistant and clin. isolated S. aureus (MIC = 2μg/mL). With low hemolytic activity towards mice red blood cells, C5 exhibited good antibacterial effect in vivo in preliminary pharmacodynamic assay. More importantly, C5 was difficult to induce bacterial resistance. Further mechanism studies proved that C5 could inhibit bacterial cell division by promoting FtsZ polymerization, leading to disorderly polymerization and disordered knots. Therefore, our findings suggest that this class of novel indolyl-5-methylphenanthridium derivatives are promising for future antibacterial agents.

European Journal of Medicinal Chemistry published new progress about Antibacterial agents. 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Synthetic Route of 74317-85-4.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Patrick published the artcileEffects of structural modification of (alkyldiene-imidazolium bromide)-based gemini monomers on the formation of the lyotropic bicontinuous cubic phase, HPLC of Formula: 56523-59-2, the main research area is alkyldiene imidazolium bromide gemini monomer lyotropic bicontinuous cubic phase.

Seven homologues of an amphiphilic gemini monomer were synthesized and screened for the ability to form a bicontinuous cubic (Q) lyotropic liquid crystal phase. Four of these homologues form a Q phase with glycerol or water that can be cross-linked with retention of the nanoporous structure, with one exhibiting a well-ordered Q phase with a wider phase window than the parent monomer.

Soft Matter published new progress about Liquid crystals, lyotropic. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, HPLC of Formula: 56523-59-2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Trost, Barry M. published the artcileSulfones as Synthetic Linchpins: Transition-Metal-Free sp3-sp2 and sp2-sp2 Cross-Couplings Between Geminal Bis(sulfones) and Organolithium Compounds, Application of 2-Bromo-4-methoxybenzoic acid, the main research area is substituted dihydronaphthalene preparation; geminal bis sulfone organolithium compound coupling; cross-coupling; sulfones; synthesis design; transition-metal-free; umpolung.

A valuable umpolung strategy that highlights the ambiphilic nature of the bis(phenylsulfonyl)methyl synthons and demonstrates its utility as a synthetic linchpin is reported. Alkyl- and aryllithiums couple with the central carbon of the bis(phenylsulfonyl)methyl unit to ultimately generate trisubstituted alkenes I [R = H, 6-MeO, 7-F, etc.; R1 = n-Bu, Ph, (CH2)2C6H5, etc.], comprising formal sp3-sp2 and sp2-sp2 cross-couplings between organolithium reagents and bis(sulfones). This process occurs almost instantaneously at -78 °C in the absence of any transition metals. By developing this curious transformation, it has been demonstrated that bis(phenylsulfonyl)methane is a valuable synthetic linchpin, which can undergo two C-C bond-forming processes as an sp3-nucleophile, followed by a third C-C bond-forming reaction as an effective sp2-electrophile. This discovery significantly enhances the utility of this ubiquitous, but underutilized, linker group.

Chemistry – A European Journal published new progress about Acidity function, Hammett. 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Application of 2-Bromo-4-methoxybenzoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Zhiqiang published the artcilePhotoresponsive supramolecular coordination polyelectrolyte as smart anticounterfeiting inks, Synthetic Route of 913836-27-8, the main research area is photoresponsive supramol coordination polyelectrolyte anticounterfeiting ink.

While photoluminescence printing is a widely applied anticounterfeiting technique, there are still challenges in developing new generation anticounterfeiting materials with high security. Here we report the construction of a photoresponsive supramol. coordination polyelectrolyte (SCP) through hierarchical self-assembly of lanthanide ion, bis-ligand and diarylethene unit, driven by metal-ligand coordination and ionic interaction. Owing to the conformation-dependent photochromic fluorescence resonance energy transfer between the lanthanide donor and diarylethene acceptor, the ring-closure/ring-opening isomerization of the diarylethene unit leads to a photoreversible luminescence on/off switch in the SCP. The SCP is then utilized as security ink to print various patterns, through which photoreversible multiple information patterns with visible/invisible transformations are realized by simply alternating the irradiation with UV and visible light. This work demonstrates the possibility of developing a new class of smart anticounterfeiting materials, which could be operated in a noninvasive manner with a higher level of security.

Nature Communications published new progress about Inks (anticounterfeiting). 913836-27-8 belongs to class bromides-buliding-blocks, name is 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C14H20BBrO3, Synthetic Route of 913836-27-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kelly, Martha J. published the artcileDiscovery of 2-[3,5-Dichloro-4-(5-isopropyl-6-oxo-1,6-dihydropyridazin-3-yloxy)phenyl]-3,5-dioxo-2,3,4,5-tetrahydro[1,2,4]triazine-6-carbonitrile (MGL-3196), a Highly Selective Thyroid Hormone Receptor β Agonist in Clinical Trials for the Treatment of Dyslipidemia, Related Products of bromides-buliding-blocks, the main research area is tetrahydrotriazinecarbonitrile derivative MGL3196 thyroid hormone receptor agonist dyslipidemia treatment.

The beneficial effects of thyroid hormone (TH) on lipid levels are primarily due to its action at the thyroid hormone receptor β (THR-β) in the liver, while adverse effects, including cardiac effects, are mediated by thyroid hormone receptor α (THR-α). A pyridazinone series has been identified that is significantly more THR-β selective than earlier analogs. Optimization of this series by the addition of a cyanoazauracil substituent improved both the potency and selectivity and led to MGL-3196 (53), which is 28-fold selective for THR-β over THR-α in a functional assay. Compound 53 showed outstanding safety in a rat heart model and was efficacious in a preclin. model at doses that showed no impact on the central thyroid axis. In reported studies in healthy volunteers, 53 exhibited an excellent safety profile and decreased LDL cholesterol (LDL-C) and triglycerides (TG) at once daily oral doses of 50 mg or higher given for 2 wk.

Journal of Medicinal Chemistry published new progress about Anticholesteremic agents. 74896-66-5 belongs to class bromides-buliding-blocks, name is Methyl 3,5-dibromo-4-methylbenzoate, and the molecular formula is C9H8Br2O2, Related Products of bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

DeVries, Vern G. published the artcileHypolipidemic alkoxybenzoic acids, Application In Synthesis of 56523-59-2, the main research area is hypolipidemic alkoxybenzoic acid derivative; benzoic acid alkoxy derivative hypolipidemic.

A series of ∼90 p-alkoxybenzoic acids (I) with aromatic ring substituents or modified alkyl or unsaturated chains (R1), prepared by alkylation of the appropriate hydroxybenzoate ester followed by saponification, was screened in rats for serum-sterol and triglyceride lowering activity. Alkyl chain substituents such as chloro and oximino enhanced activity, while azido, thiol, and some alkylthio groups resulted in retention of activity. Some alkylthio substituents on the alkyl chain and aryl ring substituents abolished sterol-lowering activity. The effect of alkyl chain branching was variable, while unsaturation had no adverse effect on activity except when located near either end of the chain.

Journal of Medicinal Chemistry published new progress about Anticholesteremic agents. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Application In Synthesis of 56523-59-2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary