Category: bromides-buliding-blocks

Zheng, Yan-Long published the artcileNickel-Catalyzed Domino Heck-Type Reactions Using Methyl Esters as Cross-Coupling Electrophiles, Synthetic Route of 647020-71-1, the main research area is nickel catalyst Heck Suzuki Miyaura coupling methyl ester electrophile; cross-coupling; cyclizations; esters; homogeneous catalysis; nickel.

While esters are frequently used as traditional electrophiles in substitution chem., their application in cross-coupling chem. is still in its infancy. Me esters can be used as coupling electrophiles in Ni-catalyzed Heck-type reactions through the challenging cleavage of the C(acyl)-O bond under relatively mild reaction conditions at either 80 or 100°. With the σ-NiII intermediate generated from the insertion of acyl NiII species into the tethered C:C bond, carbonyl-retentive products were formed by domino Heck/Suzuki-Miyaura coupling and Heck/reduction pathways when organoboron and mild hydride nucleophiles were used.

Angewandte Chemie, International Edition published new progress about Cross-coupling reaction. 647020-71-1 belongs to class bromides-buliding-blocks, name is Methyl 2-bromo-3-fluorobenzoate, and the molecular formula is C8H6BrFO2, Synthetic Route of 647020-71-1.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Weixiong published the artcileDiscovery of highly potent SARS-CoV-2 Mpro inhibitors based on benzoisothiazolone scaffold, Formula: C8H7BrO3, the main research area is benzoisothiazolone scaffold SARSCoV2 coronavirus Mpro inhibitor COVID19; Benzoisothiazolone; COVID-19; Main protease inhibitors; SARS-CoV-2.

The COVID-19 pandemic has drastically impacted global economies and public health. Although vaccine development has been successful, it was not sufficient against more infectious mutant strains including the Delta variant indicating a need for alternative treatment strategies such as small mol. compound development. In this work, a series of SARS-CoV-2 main protease (Mpro) inhibitors were designed and tested based on the active compound from high-throughput diverse compound library screens. The most efficacious compound (16b-3) displayed potent SARS-CoV-2 Mpro inhibition with an IC50 value of 116 nM and selectivity against SARS-CoV-2 Mpro when compared to PLpro and RdRp. This new class of compounds could be used as potential leads for further optimization in anti COVID-19 drug discovery.

Bioorganic & Medicinal Chemistry Letters published new progress about Anticoronaviral agents. 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Formula: C8H7BrO3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Yi-Ting published the artcileNovel nucleocapsid protein-targeting phenanthridine inhibitors of SARS-CoV-2, COA of Formula: C8H7BrO3, the main research area is nucleocapsid protein phenanthridine inhibitor SARS CoV2 coronavirus COVID19; N-terminal domain; Nucleocapsid protein; Phenanthridine; SARS-CoV-2.

The COVID-19 pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is unprecedented in human history. As a major structural protein, nucleocapsid protein (NPro) is critical to the replication of SARS-CoV-2. In this work, 17 NPro-targeting phenanthridine derivatives were rationally designed and synthesized, based on the crystal structure of NPro. Most of these compounds can interact with SARS-CoV-2 NPro tightly and inhibit the replication of SARS-CoV-2 in vitro. Compounds 12 and 16 exhibited the most potent anti-viral activities with 50% effective concentration values of 3.69 and 2.18μM, resp. Furthermore, site-directed mutagenesis of NPro and Surface Plasmon Resonance (SPR) assays revealed that 12 and 16 target N-terminal domain (NTD) of NPro by binding to Tyr109. This work found two potent anti-SARS-CoV-2 bioactive compounds and also indicated that SARS-CoV-2 NPro-NTD can be a target for new anti-virus agents.

European Journal of Medicinal Chemistry published new progress about Anticoronaviral 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, Xuan published the artcileDiscovery of PROTAC BCL-XL degraders as potent anticancer agents with low on-target platelet toxicity, Related Products of bromides-buliding-blocks, the main research area is preparation PROTAC apoptosis BCLxL degrader cancer platelet toxicity; Apoptosis; BCL-X(L); Degradation; PROTAC; Platelet.

Anti-apoptotic protein BCL-XL plays a key role in tumorigenesis and cancer chemotherapy resistance, rendering it an attractive target for cancer treatment. However, BCL-XL inhibitors such as ABT-263 cannot be safely used in the clinic because platelets solely depend on BCL-XL to maintain their viability. To reduce the on-target platelet toxicity associated with the inhibition of BCL-XL, we designed and synthesized PROTAC BCL-XL degraders that recruit CRBN or VHL E3 ligase because both of these enzymes are poorly expressed in human platelets compared to various cancer cell lines. We confirmed that platelet-toxic BCL-XL/2 dual inhibitor ABT-263 can be converted into platelet-sparing CRBN/VHL-based BCL-XL specific degraders. A number of BCL-XL degraders are more potent in killing cancer cells than their parent compound ABT-263. Specifically, XZ739, a CRBN-dependent BCL-XL degrader, is 20-fold more potent than ABT-263 against MOLT-4 T-ALL cells and has >100-fold selectivity for MOLT-4 cells over human platelets. Our findings further demonstrated the utility of PROTAC technol. to achieve tissue selectivity through recruiting differentially expressed E3 ligases.

European Journal of Medicinal Chemistry published new progress about Antitumor agents (low). 55099-31-5 belongs to class bromides-buliding-blocks, name is Ethyl 10-bromodecanoate, and the molecular formula is C12H23BrO2, Related Products of bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lortscher, Emanuel published the artcileCharge transport through molecular rods with reduced π-conjugation, Application In Synthesis of 452-63-1, the main research area is reduced pi conjugation oligophenylene mol rod charge transport.

A series of oligophenylene rods of increasing lengths is synthesized to investigate the charge-transport mechanisms. Me groups are attached to the Ph rings to weaken the electronic overlap of the π-subsystems along the mol. backbones. Out-of-plane rotation of the Ph rings is confirmed in the solid state by means of X-ray anal. and in solution by using UV/Vis spectroscopy. The influence of the reduced π-conjugation on the resonant charge transport is studied at the single-mol. level by using the mech. controllable break-junction technique. Experiments are performed under ultra-high-vacuum conditions at low temperature (50 K). A linear increase of the conductance gap with increasing number of Ph rings (from 260 meV for one ring to 580 meV for four rings) is revealed. In addition, the absolute conductance of the first resonant peaks does not depend on the length of the mol. wire. Resonant transport through the first MO is found to be dominated by charge-carrier injection into the mol., rather than by the intrinsic resistance of the mol. wire length.

ChemPhysChem published new progress about Conjugation (bond), π-. 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Application In Synthesis of 452-63-1.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Jing published the artcileIdentification and Elimination of an Unexpected Catalyst Poison in Suzuki Coupling, Safety of 5-Bromo-6-hydroxynicotinic acid, the main research area is unexpected Suzuki coupling catalyst poison sulfur free synthesis.

A Suzuki coupling reaction gave an uncharacteristically low conversion in a GMP campaign. Initial investigation revealed a palladium catalyst poison in the starting material. A temporary solution was developed along with contingency plans to enable successful material delivery. Further systematic studies led to the identification of elemental sulfur as the culprit. A “”sulfur-free”” synthesis of the starting material was developed for the next round of manufacturing

Organic Process Research & Development published new progress about Polymerization catalysts (poisons). 41668-13-7 belongs to class bromides-buliding-blocks, name is 5-Bromo-6-hydroxynicotinic acid, and the molecular formula is C6H4BrNO3, Safety of 5-Bromo-6-hydroxynicotinic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tron, Arnaud published the artcileReversible Photocapture of a [2]Rotaxane Harnessing a Barbiturate Template, COA of Formula: C12H23BrO2, the main research area is reversible photocapture rotaxane barbiturate template.

Photoirradiation of a hydrogen-bonded mol. complex comprising acyclic components, namely, a stoppered thread (1) with a central barbiturate motif and an optimized doubly anthracene-terminated acyclic Hamilton-like receptor (2b), leads to an interlocked architecture, which was isolated and fully characterized. The sole isolated interlocked photoproduct (Φ = 0.06) is a [2]rotaxane, with the dimerized anthracenes assuming a head-to-tail geometry, as evidenced by NMR spectroscopy and consistent with mol. simulation, physicochem., physicochem. (PM6). A different behavior was observed on irradiating homologous mol. complexes 1⊂2a, 1⊂2b, and 1⊂2c, where the spacers of 2a, 2b, and 2c incorporated 3, 6, and 9 methylene units, resp. While no evidence of interlocked structure formation was observed following irradiation of 1⊂2a, a kinetically labile rotaxane was obtained on irradiating the complex 1⊂2c, and ring slippage was revealed. A more stable [2]rotaxane was formed on irradiating 1⊂2b, whose capture is found to be fully reversible upon heating, thereby resetting the system, with some fatigue (38%) after four irradiation-thermal reversion cycles.

Journal of Organic Chemistry published new progress about [2+2] Photocycloaddition reaction. 55099-31-5 belongs to class bromides-buliding-blocks, name is Ethyl 10-bromodecanoate, and the molecular formula is C12H23BrO2, COA of Formula: C12H23BrO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Usui, Yoshihiro published the artcileDiscovery of novel 2-(3-phenylpiperazin-1-yl)-pyrimidin-4-ones as glycogen synthase kinase-3β inhibitors, Quality Control of 452-63-1, the main research area is phenylpiperazinyl pyrimidinone preparation glycogen synthase kinase inhibitor; Alzheimer’s disease; glycogen synthase kinase-3; phenylpiperazine.

The results of further evolution of glycogen synthase kinase (GSK)-3β inhibitors from authors’ promising compounds containing a 2-phenylmorpholine moiety are described. Transformation of the morpholine moiety into a piperazine moiety resulted in potent GSK-3β inhibitors. SAR studies focused on the Ph moiety revealed that a 4-fluoro-2-methoxy group afforded potent inhibitory activity toward GSK-3β. Based on docking studies of (S)-isomer of I, new hydrogen bonding between the nitrogen atom of the piperazine moiety and the oxygen atom of the main chain of Gln185 has been indicated, which may contribute to increased activity compared with that of the corresponding phenylmorpholine analogs. Effect of the stereochem. of the phenylpiperazine moiety is also discussed.

Bioorganic & Medicinal Chemistry Letters published new progress about Alzheimer disease (treatment of). 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Quality Control of 452-63-1.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Provera, Stefano published the artcileApplication of LC-NMR and HR-NMR to the characterization of biphenyl impurities in the synthetic route development for vestipitant, a novel NK1 antagonist, Quality Control of 452-63-1, the main research area is LC NMR biphenyl impurity vestipitant NK1 HPLC.

Vestipitant is a novel NK1 antagonist currently under investigation for the treatment of CNS disorders and emesis. The first synthetic step comprised a Grignard synthesis. An impurity was identified and initially expected to be a sym. biphenyl. This paper reports the work to synthesize the supposed structure and the spectroscopic analyses (LC-NMR and HR-NMR) to correctly identify the real structure and understand the chem. pathway of the impurity.

Journal of Pharmaceutical and Biomedical Analysis published new progress about High-resolution NMR spectroscopy. 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Quality Control of 452-63-1.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sun, Xicheng published the artcileDiscovery of potent and novel S-nitrosoglutathione reductase inhibitors devoid of cytochrome P450 activities, Application of Ethyl 7-(4-bromophenyl)-4,7-dioxoheptanoate, the main research area is SAR preparation pyrrole S nitrosoglutathione reductase inhibitor.

The pyrrole based N6022, e.g. I, was recently identified as a potent, selective, reversible, and efficacious S-nitrosoglutathione reductase (GSNOR) inhibitor and is currently undergoing clin. development for the treatment of acute asthma. GSNOR is a member of the alc. dehydrogenase family (ADH) and regulates the levels of S-nitrosothiols (SNOs) through catabolism of S-nitrosoglutathione (GSNO). Reduced levels of GSNO, as well as other nitrosothiols (SNOs), have been implicated in the pathogenesis of many diseases including those of the respiratory, cardiovascular, and gastrointestinal systems. Preservation of endogenous SNOs through GSNOR inhibition presents a novel therapeutic approach with broad applicability. We describe here the synthesis and structure-activity relationships (SAR) of novel pyrrole based analogs of N6022 focusing on removal of cytochrome P 450 inhibition activities. We identified potent and novel GSNOR inhibitors having reduced CYP inhibition activities and demonstrated efficacy in a mouse ovalbumin (OVA) model of asthma.

Bioorganic & Medicinal Chemistry Letters published new progress about Structure-activity relationship. 1208318-08-4 belongs to class bromides-buliding-blocks, name is Ethyl 7-(4-bromophenyl)-4,7-dioxoheptanoate, and the molecular formula is C15H17BrO4, Application of Ethyl 7-(4-bromophenyl)-4,7-dioxoheptanoate.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary