Category: bromides-buliding-blocks

Amaradhi, Radhika; Mohammed, Shabber; Banik, Avijit; Franklin, Ronald; Dingledine, Raymond; Ganesh, Thota published the artcile< Second-Generation Prostaglandin Receptor EP2 Antagonist, TG8-260, with High Potency, Selectivity, Oral Bioavailability, and Anti-Inflammatory Properties>, Formula: C9H7BrO3, the main research area is inflammation antiinflammatory lead optimization pharmacokinetics CYP450 inhibition competitive antagonism.

EP2, a G-protein-coupled prostaglandin-E2 receptor, has emerged as a seminal biol. target for drug discovery. EP2 receptor activation is typically proinflammatory; therefore, the development of EP2 antagonists to mitigate the severity and disease pathol. in a variety of inflammation-driven central nervous system and peripheral disorders would be a novel strategy. We have recently developed a second-generation EP2 antagonist TG8-260 and shown that it reduces hippocampal neuroinflammation and gliosis after pilocarpine-induced status epilepticus in rats. Here, we present details of synthesis, lead optimization on earlier leads that resulted in TG8-260 (I), potency and selectivity evaluations using cAMP-driven time-resolved fluorescence resonance energy-transfer (TR-FRET) assays and [H3]-PGE2-binding assays, absorption, distribution, metabolism, and excretion (ADME), and pharmacokinetics. TG8-260 (2f) showed Schild KB = 13.2 nM (3.6-fold more potent than the previous lead TG8-69 (1c)) and 500-fold selectivity to EP2 against other prostanoid receptors. Pharmacokinetic data indicated that TG8-260 has a plasma half-life of 2.14 h (PO) and excellent oral bioavailability (77.3%). Extensive ADME tests indicated that TG8-260 is a potent inhibitor of CYP450 enzymes. Further, we show that TG8-260 displays antagonistic activity on the induction of EP2 receptor-mediated inflammatory gene expression in microglia BV2-hEP2 cells; therefore, it can serve as a tool for investigating anti-inflammatory pathways in peripheral inflammatory disease animal models.

ACS Pharmacology & Translational Science published new progress about 5-HT2A receptors Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 20099-90-5 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO3, Formula: C9H7BrO3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Baulu, Nicolas; Poradowski, Marie-Noelle; Verrieux, Ludmilla; Thuilliez, Julien; Jean-Baptiste-dit-Dominique, Francois; Perrin, Lionel; D’Agosto, Franck; Boisson, Christophe published the artcile< Design of selective divalent chain transfer agents for coordinative chain transfer polymerization of ethylene and its copolymerization with butadiene>, Formula: C9H11Br, the main research area is divalent chain transfer agent ethylene butadiene polymerization.

PhMg(CH2)5MgPh and MesMg(CH2)5MgMes – divalent bis-metalated chain transfer agents (CTA) – were designed, synthesized and implemented in the polymerization of ethylene or the copolymerization of ethylene with butadiene mediated by {(Me2Si(C13H8)2)Nd(μ-BH4)[(μ-BH4)Li(THF)]}2. The systems showed coordinative chain transfer (co)polymerization features with a selectivity towards the initiation depending on the CTA used. Whereas PhMg(CH2)5MgPh initiated chain growth both at the alkyl and aryl sides, MesMg(CH2)5MgMes led to an unprecedented selective polymer chain growth from the alcanediyl moiety while the mesityl groups remain as spectators. The mechanism of the polymerization initiation has been investigated computationnaly at the DFT level. The theor. contribution of the study highlights the different intermediates formed upon combination of the neodymium metallocene and the magnesium CTA, and rationalize the specifity confered by the mesityl groups to induce selective initiation on an alkyl moiety.

Polymer Chemistry published new progress about Chain transfer agents. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Formula: C9H11Br.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kashida, Junki; Shoji, Yoshiaki; Fukushima, Takanori published the artcile< Synthesis and Reactivity of Cyclic Borane-Amidine Conjugated Molecules Formed by Direct 1,2-Carboboration of Carbodiimides with 9-Borafluorenes>, Related Products of 576-83-0, the main research area is cyclic borane amidine conjugated preparation carboboration carbodiimide borafluorene; crystal mol structure cyclic borane amidine conjugate; amidines; borafluorenes; carboboration; carbodiimides; heterocycles.

Efficient 1,2-carboboration reactions to the C:N bond of carbodiimides with 9-borafluorenes, which give rise to cyclic borane-amidine conjugates with a seven-membered BNC5 ring, are reported. The resulting cyclic borane-amidine conjugates can be hydrolyzed into an acyclic bifunctional biaryl compound carrying both boronic acid and amidine groups, rendering the utility of the two-step protocol for the synthesis of multi-functionalized mol. systems with a potential as a supramol. building block. Furthermore, the conjugated structure of the cyclic boron-amidine compounds can be changed upon alkylation of the boron atom that increases the coordination number of boron. The combination of Lewis acid (borane) and conjugated base (amidine) provides rich structural diversity of heteroatom-containing π-conjugated systems.

Chemistry – An Asian Journal published new progress about Borylation (carboboration). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Related Products of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Mal, Kajal; Mukhopadhyay, Chhanda published the artcile< Chromatography free expeditious green synthesis of 3-hydroxy-2-pyrrolidone derivatives under eco-friendly conditions via the oxidation of benzyl amines without catalyst>, Product Details of C7H8BrN, the main research area is hydroxypyrrolidone preparation green chem; benzyl amine dialkylacetylenedicarboxylate oxidation.

A sustainable and atom economic one-pot synthesis of biol. significant 3-hydroxy-2-pyrrolidone moieties via the reaction of benzyl amine, aniline (or another benzyl amine) and dialkylacetylenedicarboxylate without catalyst in green solvent has been developed. Some remarkable features of this green procedure are aqueous ethanol solvent, reaction without catalyst, no column chromatog. for isolation of the products, higher the value of atom economy (AE) (up to 94.30%) and lower the E-factor value (up to 0.23 g/g). The reaction principally demonstrates the scope of oxidation of benzyl amines followed by cyclization. This synthetic route is also applicable to gram-scale synthesis.

Journal of Molecular Structure published new progress about Aromatic amines Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Product Details of C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gopalsamy, Ariamala; Aulabaugh, Ann E.; Barakat, Amey; Beaumont, Kevin C.; Cabral, Shawn; Canterbury, Daniel P.; Casimiro-Garcia, Agustin; Chang, Jeanne S.; Chen, Ming Z.; Choi, Chulho; Dow, Robert L.; Fadeyi, Olugbeminiyi O.; Feng, Xidong; France, Scott P.; Howard, Roger M.; Janz, Jay M.; Jasti, Jayasankar; Jasuja, Reema; Jones, Lyn H.; King-Ahmad, Amanda; Knee, Kelly M.; Kohrt, Jeffrey T.; Limberakis, Chris; Liras, Spiros; Martinez, Carlos A.; McClure, Kim F.; Narayanan, Arjun; Narula, Jatin; Novak, Jonathan J.; O’Connell, Thomas N.; Parikh, Mihir D.; Piotrowski, David W.; Plotnikova, Olga; Robinson, Ralph P.; Sahasrabudhe, Parag V.; Sharma, Raman; Thuma, Benjamin A.; Vasa, Dipy; Wei, Liuqing; Wenzel, A. Zane; Withka, Jane M.; Xiao, Jun; Yayla, Hatice G. published the artcile< PF-07059013: A Noncovalent Modulator of Hemoglobin for Treatment of Sickle Cell Disease>, Recommanded Product: 2-Amino-5-bromobenzaldehyde, the main research area is pf07059013 noncovalent Hb modulator sickle cell disease.

Sickle cell disease (SCD) is a genetic disorder caused by a single point mutation (β6 Glu → Val) on the β-chain of adult Hb (HbA) that results in sickled Hb (HbS). In the deoxygenated state, polymerization of HbS leads to sickling of red blood cells (RBC). Several downstream consequences of polymerization and RBC sickling include vaso-occlusion, hemolytic anemia, and stroke. We report the design of a noncovalent modulator of HbS, clin. candidate PF-07059013 (23). The seminal hit mol. was discovered by virtual screening and confirmed through a series of biochem. and biophys. studies. After a significant optimization effort, we arrived at 23, a compound that specifically binds to Hb with nanomolar affinity and displays strong partitioning into RBCs. In a 2-wk multiple dose study using Townes SCD mice, 23 showed a 37.8% (±9.0%) reduction in sickling compared to vehicle treated mice. 23 (PF-07059013) has advanced to phase 1 clin. trials.

Journal of Medicinal Chemistry published new progress about Crystal structure. 29124-57-0 belongs to class bromides-buliding-blocks, and the molecular formula is C7H6BrNO, Recommanded Product: 2-Amino-5-bromobenzaldehyde.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Swier, L. J. Y. M.; Monjas, L.; Reessing, F.; Oudshoorn, R. C.; Aisyah; Primke, T.; Bakker, M. M.; van Olst, E.; Ritschel, T.; Faustino, I.; Marrink, S. J.; Hirsch, A. K. H.; Slotboom, D. J. published the artcile< Insight into the complete substrate-binding pocket of ThiT by chemical and genetic mutations>, SDS of cas: 188813-04-9, the main research area is ThiT gene mutation binding pocket Lactococcus.

Energy-coupling factor (ECF) transporters are involved in the uptake of micronutrients in bacteria. The transporters capture the substrate by high-affinity binding proteins, the so-called S-components. Here, we present the anal. of two regions of the substrate-binding pocket of the thiamine-specific S-component in Lactococcus lactis, ThiT. First, interaction of the thiazolium ring of thiamine with residues Trp34, His125 and Glu84 by π-π-stacking and cation-π is studied, and second, the part of the binding pocket that extends from the hydroxyl group. We mutated either the transported ligand (chem.) or the protein (genetically). Surprisingly, modifications in the thiazolium ring by introducing substituents with opposite electronic effects had similar effects on the binding affinity. We hypothesize that the electronic effects are superseeded by steric effects of the added substituents, which renders the study of isolated interactions difficult. Amino acid substitutions in ThiT indicate that the electrostatic interaction facilitated by residue Glu84 of ThiT and thiamine is necessary for picomolar affinity. Deazathiamine derivatives that explore the subpocket of the binding site extending from the hydroxyl group of thiamine bind with high affinity to ThiT and may be developed into selective inhibitors of thiamine transport by ECF transporters. Mol.-dynamics simulations suggest that two of these derivatives may not only bind to ThiT, but could also be transported.

MedChemComm published new progress about Electrostatic force. 188813-04-9 belongs to class bromides-buliding-blocks, and the molecular formula is C8H7BrO, SDS of cas: 188813-04-9.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Azizollahi, Hamid; Mehta, Vaibhav P.; Garcia-Lopez, Jose-Antonio published the artcile< Pd-catalyzed cascade reactions involving skipped dienes: from double carbopalladation to remote C-C cleavage>, Category: bromides-buliding-blocks, the main research area is spirocycle preparation; diene double carbopalladation cascade palladium catalyst; allyl benzofuran preparation; skipped diene beta elimination palladium catalyst.

Herein, two ligand-controlled cascade reactions relying on the intramol. carbopalladation of skipped dienes were reported. The use of a bulky monodentate phosphine ligand afforded [4,5]-spirocycles I [R = H, 5-Me, 6-F, etc.] via sequential double carbopalladation, however bidentate phosphines promoted Pd-catalyzed remote β-C-elimination cascade to afford 3-allyl-substituted benzofurans II.

Chemical Communications (Cambridge, United Kingdom) published new progress about Alkadienes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 81107-97-3 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3O, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Darensbourg, Donald J.; Mueller, Brian L.; Bischoff, Christopher J.; Reibenspies, Joseph H. published the artcile< Chemistry of zerovalent tungsten alkoxides. Synthesis, x-ray structure and reactivity toward carbon dioxide>, Computed Properties of 82-73-5, the main research area is crystal structure tungstate carbonyl fluoropropoxo; tungstate carbonyl fluoropropoxo fluoropropyl carbonate complex; propoxo tungstate carbonyl complex; carbon dioxide reaction tungstate carbonyl fluoropropoxo.

[PPN][W(CO)5(OCH2CF3)] and [PPN]2[W2(CO)8(OCH2CF3)2] (PPN = (Ph3P)2N+) have been synthesized and characterized. [PPN][W(CO)5(OCH2CF3)] reacted rapidly and reversibly with CO2 to afford [PPN][W(CO)2[OC(O)OCH2CF3]]. The x-rya crystal structure of [PPN]2[W2(CO)8(OCH2CF3)2] has been determined The complex crystallizes in the triclinic space group P1̅, a 13.460(11), b 12.318(5), c 13.842(10) Å, α 82.73(5), β 59.11(5), γ 80.09(5)°, and Z = 1.

Inorganic Chemistry published new progress about Crystal structure. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Computed Properties of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Yue; Dai, Gaole; Chen, Yuanyuan; Wang, Ru; Li, Huamei; Shi, Xueliang; Zhang, Xiaohong; Xu, Yang; Zhao, Yu published the artcile< Effective Design Strategy of Small Bipolar Molecules through Fused Conjugation toward 2.5 V Based Redox Flow Batteries>, COA of Formula: C8H6BrFO2, the main research area is sym redox flow battery bipolar redox active mol design.

Using bipolar redox-active mols. (BRMs) as active materials is a practical way to address electrolyte crossover and resultant unpredictable side reactions in redox-flow batteries. However, the development of BRMs is greatly hindered by difficulties in finding new mols. from limited redox-active moieties and in achieving high cell voltage to compete with existing flow battery chemistries. This study proposes a strategy for design of high-voltage BRMs using fused conjugation that regulates the redox potential of integrated redox-active moieties. As a demonstration, quaternary N and ketone redox moieties are used to construct a new BRM that shows a prominent voltage gap with good electrochem. stability. A sym. redox-flow cell based on this mol. exhibits a high voltage of 2.5 V and decent cycling stability. This study provides a general strategy for designing new BRMs that may enrich the cell chemistries of organic redox-flow batteries.

ACS Energy Letters published new progress about Atomic charge. 6942-39-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H6BrFO2, COA of Formula: C8H6BrFO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Larsen, Matthew A.; Oeschger, Raphael J.; Hartwig, John F. published the artcile< Effect of Ligand Structure on the Electron Density and Activity of Iridium Catalysts for the Borylation of Alkanes>, Recommanded Product: 2,4,6-Trimethylbromobenzene, the main research area is phenanthroline ligand iridium catalyst electron density borylation alkane; C–H borylation; alkane functionalization; catalyst design; iridium; phenanthrolines; reaction kinetics.

An in-depth study of iridium catalysts for the borylation of alkyl C-H bonds is reported. Although the borylation of aryl C-H bonds can be catalyzed by iridium complexes containing phen or bpy ligands at mild temperatures and with limiting arene, the borylation of alkyl C-H bonds remains underdeveloped. We prepared a library of phenanthrolines that contain varying substitution patterns. The corresponding phen-Ir trisboryl carbon monoxide complexes were synthesized to determine the electron-donating ability of these ligands, and the initial rates for the borylation of the C-H bonds in THF and diethoxyethane β to oxygen catalyzed by Ir complexes containing these ligands were measured. For some subsets of these ligands, the donor ability correlated pos. with the rate of C-H borylation catalyzed by the complexes containing ligands within a given subset. However, across subsets, ligands possessing similar donor properties to one another form catalysts for the borylation of alkyl C-H bonds with widely varying activity. This phenomenon was investigated computationally, and it was discovered that the stabilizing interactions between the phenanthroline ligand and the boryl ligands attached to Ir in the transition state for C-H oxidative addition could account for the differences in the activity of the catalysts that possess similar electron densities at Ir. The effect of these interactions on the borylation of secondary alkyl C-H bonds is larger than it is on the borylation of primary alkyl C-H bonds.

ACS Catalysis published new progress about Alkanes Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or Reagent). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Recommanded Product: 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary