Author: Jessica.F

Davey, Tim W. published the artcileSynthesis of ω-hydroxy quaternary ammonium bolaform surfactants, Related Products of bromides-buliding-blocks, the main research area is hydroxy quaternary ammonium bolaform surfactant synthesis.

Several members of a novel class of ω-substituted asym. bolaform surfactants were synthesized to investigate their surfactant and biol. properties. The ω-hydroxy trialkylammonium and pyridinium surfactants have significant antimicrobial and antifungal activity relative to their conventional analogs. For conventional quaternary ammonium alkyl surfactants, increasing the hydrocarbon chain length causes a decrease in the surfactant monomer solubility and a corresponding decrease in the biol. activity. No such trend is observed for the ω-hydroxy quaternary ammonium bromide series.

Australian Journal of Chemistry published new progress about Antimicrobial agents. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Related Products of bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yang, Fen-Fen published the artcileSynthesis and antibacterial activity studies in vitro of indirubin-3′-monoximes, COA of Formula: C8H7BrO3, the main research area is indirubin monoxime preparation antibacterial activity.

Multi-drug-resistant microbial pathogens are a serious global health problem. New compounds with antibacterial activity serve as good candidates for developing novel antibacterial drugs which is very urgent and important. In this work, based on the unique scaffold of indirubin, an active ingredient of traditional Chinese medicine formulation Danggui Luhui Wan, we synthesized 29 indirubin-3′-monoximes and preliminarily evaluated their antibacterial activities. The antibacterial activity results demonstrated that the synthesized indirubin-3′-monoximes 5a-5z and 5aa-5ad displayed good potency against S. aureus ATCC25923 (MIC = 0.4-25.6 μg mL-1). Among them, we found that the 5-F, 5-Cl and 7-CF3 substituted indirubin-3′;-monoximes 5r, 5s and 5aa also showed better antibacterial efficiency for S. aureus (MICs up to 0.4 μg mL-1) than the prototype natural product indirubin (MIC = 32 μg mL-1). More importantly, indirubin-3′-monoxime 5aa has certain synergistic effect with levofloxacin against clinic multidrug-resistant S. aureus (fractional inhibitory concentration index: 0.375). In addition, relevant experiments including electron microscopy observations, PI staining and the leakage of extracellular potassium ions and nucleic acid (260 nm) have been performed after treating S. aureus with indirubin-3′-monoxime 5aa, and the results revealed that indirubin-3′-monoximes could increase the cell membrane permeability of S. aureus. Although indirubin-3′-monoxime 5aa showed some cytotoxicity toward SH-SY5Y cells relative to compounds 5r and 5s, the skin irritation test of male mice after shaving showed that compound 5aa at a concentration of 12.8 μg mL-1 had no toxicity to mouse skin, and it could be used as a leading compound for skin antibacterial drugs.

RSC Advances 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, COA of Formula: C8H7BrO3.

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

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

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

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

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

Talukdar, Abhijit published the artcileGas chromatography- mass spectrometric analysis of the essential oil of eaglewood (Aquilaria agallocha Roxb), Category: bromides-buliding-blocks, the main research area is Aquilaria essential oil furanoid aldehyde ketone alc acid.

Objective: The investigation was carried out to study the phytochem. constituents of agar oil of Aquilaria agallocha grown in Assam. Methods: Fungal infected agar laden wooden chips grown in Assam were soaked in water for 6 to 7 days and grounded into smaller pieces and hydro distilled to obtain the oil. 2 μL of the oil sample diluted in methanol was used for GC/MS anal. to study the chem. constituents. Results: GC-MS anal. of the oil has shown the presence of at least 35 different compounds, out of which 17 compounds were identified. Three furanoids viz. 3 methyl-2-(2 methyl-2-butenyl)-furan; 2-isobuteyl-3 Me furan and 3-methyl-2-(2-oxopropyl)furan were identified as the main aromatic components of the oil. Besides these, some acids, ketones alc. and aldehydes were also identified and reported here. Conclusion: Variation in the quality of the oil has been observed depending upon geog. region on which the trees are grown, age of the plant and extent of disease lesions formed in the wood, which was evident by studying the phytochem. constituents of the oil.

International Journal of Pharmacy and Pharmaceutical Sciences published new progress about Aquilaria malaccensis. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Ya-Jing published the artcileEnantioselective Rhodium-Catalyzed Arylation of Cyclic N-Sulfamidate Alkylketimines: A New Access to Chiral β-Alkyl-β-aryl Amino Alcohols, Safety of 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the main research area is sulfamidate preparation enantioselective addition arylboronate cyclic sulfamidate alkylketimine; rhodium catalyzed arylation sulfamidate preparation alkylarylamino alc conversion.

The enantioselective rhodium-catalyzed 1,2-addition of arylboronates to cyclic N-sulfamidate alkylketimines was developed. With a rhodium/diene complex as catalyst, high enantioselectivity and broad functional group tolerance were observed The resulting sulfamidates can easily be converted into chiral β-alkyl-β-aryl amino alcs.

Organic Letters published new progress about 1,2-Addition reaction. 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, Safety of 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Singh, I. D. published the artcileElectronic absorption spectra of 3-fluoro-6-bromotoluene and 4-fluoro-3-bromotoluene vapors, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene, the main research area is electronic spectra fluorobromotoluene; toluene fluoro bromo electronic spectra.

The vapor absorption bands of 3-fluoro-6-bromotoluene (I) and 4-fluoro-3-bromotoluene (II), belonging to an allowed electronic transition, were photographed for the 1st time. I yields ∼70 sharp red-degraded bands in the 2560-2830-Å region with the (0,0) band at 2752.8 Å. The observed frequencies were 767 and 1008 cm-1 of the ground state and 256, 491, 688, and 1011 cm-1 of the excited state. In II, ∼55 red-degraded bands lying in the 2515-2835-Å region were obtained with the (0,0) band at 2745.5 A. These bands were explained in terms of 741- and 1004- cm-1 ground state and 238-, 448-, 607-, 860-, 1212-, and 1246- cm-1 excited-state fundamentals. These frequencies were assigned to definite modes of vibration and correlated with ir frequencies.

Indian Journal of Pure and Applied Physics published new progress about UV and visible spectra. 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary