Month: November 2022

Nishihara, Ryo published the artcileAzide- and Dye-Conjugated Coelenterazine Analogues for a Multiplex Molecular Imaging Platform, Recommanded Product: 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the main research area is azide dye conjugation coelenterazine analog luminescence mol imaging luciferase.

Native coelenterazine (nCTZ) is a common substrate to most marine luciferases and photoproteins. In this study, nine novel dye- and azide-conjugated CTZ analogs were synthesized by conjugating a series of fluorescent dyes or an azide group to the C-2 or C-6 position of the nCTZ backbone to obtain bulkiness-driven substrate specificity and potential chemiluminescence/bioluminescence resonance energy transfer (C/BRET). The investigation on the optical properties revealed that azide-conjugated CTZs emit greatly biased bioluminescence to ALucs and ca. 130 nm blue-shifted bioluminescence with RLuc8.6 in living animal cells or lysates. The corresponding kinetic study explains that azide-conjugated CTZ exerts higher catalytic efficiency than nCTZ. Nile red-conjugated CTZ completely showed red-shifted CRET spectra and characteristic BRET spectra with artificial luciferase 16 (ALuc16). No or less spectral overlap occurs among [Furimazine-NanoLuc], [6-N3-CTZ-ALuc26], [6-pi-OH-CTZ-RLuc8.6], and [6-N3-CTZ-RLuc8.6] pairs, because of the substrate-driven luciferase specificity and color shifts, providing a crosstalk-free multiplex bioassay platform. The unique bioluminescence system appends a new toolbox to bioassays and multiplex mol. imaging platforms. This study is the first example that systematically synthesized fluorescent dye-conjugated CTZs and applied them for a bioluminescence assay system.

Bioconjugate Chemistry published new progress about Biological imaging. 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, Recommanded Product: 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Mueller, Ralf published the artcileLong Hydrocarbon Chain Ether Diols and Ether Diacids That Favorably Alter Lipid Disorders in Vivo, Safety of 1-Bromo-3-(3-bromopropoxy)propane, the main research area is hydrocarbon ether diol diacid lipid structure activity relationship antiobesity.

Long hydrocarbon chain ethers with bis-terminal hydroxyl or carboxyl groups have been synthesized and evaluated for their potential to favorably alter lipid disorders including metabolic syndrome. Compounds were assessed for their effects on the de novo incorporation of radiolabeled acetate into lipids in primary cultures of rat hepatocytes as well as for their effects on lipid and glycemic variables in female obese Zucker fatty rats following 1 and 2 wk of daily oral administration. The most active compounds were found to be sym. with four to five methylene groups separating the central ether functionality and the gem di-Me or methyl/aryl substituents. Biol. activity was found to be greatest for tetramethyl-substituted ether diols, while bis(arylmethyl) derivatives, diethers , and di-Ph ethers were the least active. For the most biol. active compound 28, we observed as much as a 346% increase in serum HDL-cholesterol and a 71% reduction in serum triglycerides at the highest dose administered (100 mg/kg) after 2 wk of treatment. For one compound we observed a 69% reduction in non-HDL-cholesterol, accompanied by a 131% increase in HDL-cholesterol and an 84% reduction in serum triglycerides under the same treatment conditions.

Journal of Medicinal Chemistry published new progress about Antiobesity agents. 58929-72-9 belongs to class bromides-buliding-blocks, name is 1-Bromo-3-(3-bromopropoxy)propane, and the molecular formula is C6H12Br2O, Safety of 1-Bromo-3-(3-bromopropoxy)propane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Rover, Stephan published the artcile6-Alkoxy-5-aryl-3-pyridinecarboxamides, a New Series of Bioavailable Cannabinoid Receptor Type 1 (CB1) Antagonists Including Peripherally Selective Compounds, Formula: C6H4BrNO3, the main research area is alkoxy arylpyridinecarboxamide preparation bioavailable cannabinoid CB1 antagonist.

The authors identified 6-alkoxy-5-aryl-3-pyridinecarboxamides as potent CB1 receptor antagonists with high selectivity over CB2 receptors. The series was optimized to reduce lipophilicity compared to rimonabant to achieve peripherally active mols. with minimal central effects. Several compounds that showed high plasma exposures in rats were evaluated in vivo to probe the contribution of central vs peripheral CB1 agonism to metabolic improvement. Both rimonabant and I, a potent brain penetrant CB1 receptor antagonist, significantly reduced the rate of body weight gain. However, II, a mol. with markedly reduced brain exposure, had no significant effect on body weight PK studies confirmed similarly high exposure of both I and II in the periphery but 10-fold lower exposure in the brain for II. On the basis of these data, which are consistent with reported effects in tissue-specific CB1 receptor KO mice, it was concluded that the metabolic benefits of CB1 receptor antagonists are primarily centrally mediated as originally believed.

Journal of Medicinal Chemistry published new progress about Antiobesity agents. 41668-13-7 belongs to class bromides-buliding-blocks, name is 5-Bromo-6-hydroxynicotinic acid, and the molecular formula is C6H4BrNO3, Formula: C6H4BrNO3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Jeon, Soon-Ok published the artcileA blue organic emitting diode derived from new styrylamine type dopant materials, Application of 4-(Bromomethyl)-N,N-diphenylaniline, the main research area is blue organic emitting diode LED styrylamine derivative dopant.

The authors have designed and synthesized new dopant materials based on the styrylamine moiety, 4-[(1,2-diphenyl)-4′-(N,N-diphenyl-4-vinylbenzenamine)]biphenyl (4) and 4-[(1,2-diphenyl)-4′-(N,N-diphenyl-4-vinylbenzenamine)]terphenyl (8). Blue OLEDs were obtained from new styrylamine dopant materials and compared with those of blue dopant bis[4-(di-p-N,N-diphenylamino)styryl]stilbene (DSA-Ph) and diphenyl[4-(2-terphenyl vinyl)phenyl]amine (R-BD). The ITO/DNTPD/NPB/MADN:dopant/Alq3/Al-LiF device obtained from 4 shows blue EL spectrum at 469 nm and high efficiency 3.02 cd/A at 7 V 8 also shows blue EL spectrum around λmax = 468 nm, efficiency of 3.51 cd/A and a c.d. of 25.94 mA/cm2 (855.7 cd/m2) at 7 V.

Synthetic Metals published new progress about Electroluminescence. 183994-94-7 belongs to class bromides-buliding-blocks, name is 4-(Bromomethyl)-N,N-diphenylaniline, and the molecular formula is C19H16BrN, Application of 4-(Bromomethyl)-N,N-diphenylaniline.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kondo, Hiroki published the artcileBranch-Selective Allylic C-H Carboxylation of Terminal Alkenes by Pd/sox Catalyst, SDS of cas: 74317-85-4, the main research area is regioselective carboxylation terminal alkene carboxylic acid palladium SOX catalyst; branched allylic ester preparation.

A ligand-controlled branch-selective allylic C-H carboxylation through Pd catalysis is described. The developed catalytic system, which consists of Pd(OAc)2, sulfoxide-oxazoline (sox) as a ligand and benzoquinone as an oxidant, couples terminal alkenes and carboxylic acids to furnish the corresponding branched allylic esters with high regioselectivity.

Organic Letters published new progress about C-H bond activation. 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, SDS of cas: 74317-85-4.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Volkov, Oleg A. published the artcileSpecies-Selective Pyrimidineamine Inhibitors of Trypanosoma brucei S-Adenosylmethionine Decarboxylase, SDS of cas: 123158-68-9, the main research area is pyrimidineamine preparation trypanosomicide Trypanosoma adenosylmethionine decarboxylase inhibitor.

New therapeutic options are needed for treatment of human African trypanosomiasis (HAT) caused by protozoan parasite Trypanosoma brucei. S-Adenosylmethionine decarboxylase (AdoMetDC) is an essential enzyme in the polyamine pathway of T. brucei. Previous attempts to target this enzyme were thwarted by the lack of brain penetration of the most advanced series. Herein, the authors describe a T. brucei AdoMetDC inhibitor series based on a pyrimidineamine pharmacophore that the authors identified by target-based high-throughput screening. The pyrimidineamines showed selectivity for T. brucei AdoMetDC over the human enzyme, inhibited parasite growth in whole-cell assay, and had good predicted blood-brain barrier penetration. The medicinal chem. program elucidated structure-activity relationships within the series. Features of the series that were required for binding were revealed by determining the x-ray crystal structure of TbAdoMetDC bound to one analog. The pyrimidineamine series provides a novel starting point for an anti-HAT lead optimization.

Journal of Medicinal Chemistry published new progress about Blood-brain barrier. 123158-68-9 belongs to class bromides-buliding-blocks, name is 3-Bromo-5-ethylaniline, and the molecular formula is C8H10BrN, SDS of cas: 123158-68-9.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Moreno-Sanz, Guillermo published the artcileSynthesis and Structure-Activity Relationship Studies of O-Biphenyl-3-yl Carbamates as Peripherally Restricted Fatty Acid Amide Hydrolase Inhibitors, COA of Formula: C8H7BrO3, the main research area is biphenyl carbamate preparation peripherally restricted FAAH inhibitor SAR; URB937 analog brain impermeant fatty acid amide hydrolase inhibitor; restricted access central nervous system biphenyl carbamate derivative.

The peripherally restricted fatty acid amide hydrolase (FAAH) inhibitor URB937 (I, cyclohexylcarbamic acid 3′-carbamoyl-6-hydroxybiphenyl-3-yl ester) is extruded from the brain and spinal cord by the Abcg2 efflux transporter. Despite its inability to enter the central nervous system (CNS), I exerts profound antinociceptive effects in mice and rats, which result from the inhibition of FAAH in peripheral tissues and the consequent enhancement of anandamide signaling at CB1 cannabinoid receptors localized on sensory nerve endings. In the present study, we examined the structure-activity relationships (SAR) for the biphenyl region of compound I, focusing on the carbamoyl and hydroxyl groups in the distal and proximal Ph rings. Our SAR studies generated a new series of peripherally restricted FAAH inhibitors and identified compound II (cyclohexylcarbamic acid 3′-carbamoyl-5-hydroxybiphenyl-3-yl ester) as the most potent brain-impermeant FAAH inhibitor disclosed to date.

Journal of Medicinal Chemistry published new progress about Blood-brain barrier. 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

Nikulin, M. V. published the artcilePalladium-catalyzed arylation of bis(4-bromo-2-methylinden-1-yl)dimethylsilane and related compounds, Recommanded Product: 7-Bromo-2-methyl-1H-indene, the main research area is palladium catalyst arylation bromomethylindenyl dimethylsilane zirconocene.

A new procedure was developed for the synthesis of a broad range of ansa-zirconocenes containing bis(2-methyl-4-arylindenyl)dimethylsilane ligands. The method is based on the palladium-catalyzed reaction of halogen-substituted bis(indenyl)dimethylsilanes with various organozinc compounds The aryl-substituted bridging ligands thus prepared serve as the starting compounds for the synthesis of ansa-zirconocenes, which can be used as components of promising catalysts for propylene polymerization

Russian Chemical Bulletin published new progress about Arylation catalysts. 880652-93-7 belongs to class bromides-buliding-blocks, name is 7-Bromo-2-methyl-1H-indene, and the molecular formula is C10H9Br, Recommanded Product: 7-Bromo-2-methyl-1H-indene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Park, Chul Soon published the artcileRobust Maleimide-Functionalized Gold Surfaces and Nanoparticles Generated Using Custom-Designed Bidentate Adsorbates, Formula: C15H29BrO2, the main research area is maleimide functionalized gold surface nanoparticle adsorbate self assembled monolayer.

A series of custom-designed alkanethioacetate ligands were synthesized to provide a facile method of attaching maleimide-terminated adsorbates to gold nanostructures via thiolate bonds. Monolayers on flat gold substrates derived from both mono- and dithioacetates, with and without oligo(ethylene glycol) (OEG) moieties in their alkyl spacers, were characterized using XPS, polarization modulation IR reflection-absorption spectroscopy, ellipsometry, and contact angle goniometry. For all adsorbates, the resulting monolayers revealed that a higher packing d. and more homogeneous surface were generated when the film was formed in EtOH, but a higher percentage of bound thiolate was obtained in THF. A series of gold nanoparticles (AuNPs) capped with each adsorbate were prepared to explore how adsorbate structure influences aqueous colloidal stability under extreme conditions, as examined visually and spectroscopically. The AuNPs coated with adsorbates that include OEG moieties exhibited enhanced stability under high salt concentration, and AuNPs capped with dithioacetate adsorbates exhibited improved stability against ligand exchange in competition with dithiothreitol (DTT). Overall, the best results were obtained with a chelating dithioacetate adsorbate that included OEG moieties in its alkyl spacer, imparting improved stability via enhanced solubility in water and superior adsorbate attachment owing to the chelate effect.

Langmuir published new progress about Adsorbed substances. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Formula: C15H29BrO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hoang, Johnson published the artcileQuaternary Ammonium-Terminated Films Formed from Mixed Bidentate Adsorbates Provide a High-Capacity Platform for Oligonucleotide Delivery, Application of 15-Bromopentadecanoic acid, the main research area is quaternary ammonium films bidentate adsorbates oligonucleotide delivery; binary-mixed SAMs; oligonucleotide delivery; quaternary ammonium; self-assembled monolayer; single-stranded DNA.

The exposure of quaternary ammonium groups on surfaces allows self-assembled monolayers (SAMs) to serve as architectural platforms for immobilizing oligonucleotides. The current study describes the preparation of SAMs derived from four unique bidentate adsorbates containing two different ammonium termini (i.e., trimethyl- and triethyl-) and comparison to their monodentate analogs. Our studies found that SAMs derived from the bidentate adsorbates offered considerable enhancements in oligonucleotide binding when compared to SAMs derived from their monodentate analogs. The generated SAMs were analyzed using ellipsometry, XPS, contact angle goniometry, polarization modulation IR reflection-absorption spectroscopy, and electrochem. quartz crystal microbalance. These analyses showed that the immobilization of oligonucleotides was affected by changes in the terminal functionalities and the relative packing densities of the monolayers. In efforts to enhance further the immobilization of oligonucleotides on these SAM surfaces, we explored the use of adsorbates having aliphatic linkers with systematically varying chain lengths to form binary SAMs on gold. Mixed monolayers with 50:50 ratios of adsorbates showed the greatest oligonucleotide binding. These studies lay the groundwork for oligonucleotide delivery using gold-based nanoparticles and nanoshells.

ACS Applied Materials & Interfaces published new progress about Adsorbed substances. 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