Category: bromides-buliding-blocks

Wu, Shaofeng; Geng, Furong; Dong, Jianyu; Liu, Long; Su, Lebin; Zhou, Yongbo published the artcile< General and practical synthesis of naphtho[2,1-d]oxazoles from naphthols and amines>, Product Details of C7H8BrN, the main research area is naphthol amine oxidative cyclization; naphthooxazole preparation.

A general and practical synthesis of naphtho[2,1-d]oxazoles from readily available naphthols and amines was developed using TEMPO as the oxygen source with outstanding functional group tolerance, especially for the construction of the naphthoxazole-related bioactive mol. PBNI and naphthoxazole-doped materials, as well as the polyaryloxazole-related ADN derivative This protocol allowed the rapid assembly of a small library of naphtho[2,1-d]oxazole skeletons (55 examples) that are difficult to be prepared by other methods. The ESR (EPR) and 18O-labeled experiments indicated that the radical adducts of TEMPO with naphthalenone radicals may serve as key intermediates.

Organic Chemistry Frontiers published new progress about Aromatic alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Product Details of C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ding, Zichao; Ni, Tingjunhong; Xie, Fei; Hao, Yumeng; Yu, Shichong; Chai, Xiaoyun; Jin, Yongsheng; Wang, Ting; Jiang, Yuanying; Zhang, Dazhi published the artcile< Design, synthesis, and structure-activity relationship studies of novel triazole agents with strong antifungal activity against Aspergillus fumigatus>, Electric Literature of 20776-50-5, the main research area is triazole preparation SAR antifungal agent Aspergillus; Antifungal; CYP51; Molecular docking; Synthesis; Triazole.

The incidence of invasive fungal infections has dramatically increased for several decades. In order to discover novel antifungal agents with broad spectrum and anti-Aspergillus efficacy, a series of novel triazole derivatives containing 1,2,3-benzotriazin-4-one was designed and synthesized. Most of the compounds exhibited stronger in vitro antifungal activities against tested fungi than fluconazole. Moreover, 7-chloro-3-((2R,3R)-3-(2,4-difluorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)butan-2-yl)benzo [d][1,2,3]triazin-4(3H)-one showed comparable antifungal activity against seven pathogenic strains as voriconazole and albaconazole, especially against Aspergillus fumigatus (MIC = 0.25μg/mL), and displayed moderate antifungal activity against fluconazole-resistant strains of Candida albicans. A clear SAR study indicated that compounds with groups at the 7-position resulted in novel antifungal triazoles with more effectiveness and a broader-spectrum.

Bioorganic & Medicinal Chemistry Letters published new progress about Aspergillus. 20776-50-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H6BrNO2, Electric Literature of 20776-50-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Isoda, Motoyuki; Uetake, Yuta; Takimoto, Tadashi; Tsuda, Junpei; Hosoya, Takamitsu; Niwa, Takashi published the artcile< Convergent Synthesis of Fluoroalkenes Using a Dual-Reactive Unit>, Electric Literature of 576-83-0, the main research area is aryl bromide arylboronicacid palladium catalyst chemoselective reaction; fluoroalkene preparation.

For the synthesis of diverse fluoroalkenes, a dual-reactive C2-unit, (Z)-1-boryl-1-fluoro-2-tosyloxyethene, containing nucleophilic and electrophilic moieties method was developed. Consecutive palladium-catalyzed cross-coupling reactions of this unit with aryl bromides and aryl boronic acids allow for the convergent synthesis of diverse trans-1,2-diaryl-substituted fluoroethenes in a chemoselective and stereoretentive manner.

Journal of Organic Chemistry published new progress about Alkylation, chemoselective. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Electric Literature of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Minutolo, Filippo; Antonello, Michela; Bertini, Simone; Rapposelli, Simona; Rossello, Armando; Sheng, Shubin; Carlson, Kathryn E.; Katzenellenbogen, John A.; Macchia, Marco published the artcile< Synthesis, binding affinity, and transcriptional activity of hydroxy- and methoxy-Substituted 3,4-Diarylsalicylaldoximes on estrogen receptors α and β>, Safety of 2-Bromo-1-chloro-3-nitrobenzene, the main research area is estrogen receptor affinity diarylsalicylaldoxime structure activity.

An effective, unprecedented replacement of the prototypical phenolic ‘A-ring’ of estrogens with an oxime and a hydroxy-moiety of the salicylaldoxime derivative 3,4-diphenyl-substituted (1a) opened the way to study structure-activity relationships of a new class of estrogen receptor (ER)-ligands. Herein, we present a study of the ER binding properties and transcriptional activities of analogs of 3,4-diphenylsalicylaldoxime (1a). The introduction of p-OH and p-OMe groups on the Ph substituents of 1a, as in compounds 1b-g, results in unique structure-activity profiles. The preparation of the hetero-disubstituted compounds (1b-e) was accomplished by a sequential introduction of different 3- and 4-aryl groups, obtained by exploiting the different reactivity of the bromine vs. chlorine substituents on the precursor, 2-bromo-3-chloronitrobenzene (5), in the palladium-catalyzed cross-coupling reactions. The results of the biol. tests show that the introduction of one hydroxy group on the 3-Ph substituent of the lead compound 1a improved the binding affinity on ERβ (1c), whereas the introduction of the same group on the 4-Ph substituent of 1a gave a compound (1e) with better affinity properties on ERα. The introduction of two hydroxyl groups in the para-position of both Ph substituents of 1a, as in 1g, lowered the binding on both receptor subtypes. In transcription assays, the ERα agonist character of this class of ligands is enhanced by the presence of a p-hydroxy or p-methoxy in the ‘distal’ Ph ring, whereas substitution on the other Ph ring does not substantially modify the partial agonist character of 1a. Thus, results from the binding and transcription assays illustrate that this class of ER ligands has a distinct structure-activity profile on the two ER subtypes, being potent nearly full agonists on ERα and weak, partial antagonists on ERβ.

Bioorganic & Medicinal Chemistry published new progress about Affinity. 19128-48-4 belongs to class bromides-buliding-blocks, and the molecular formula is C6H3BrClNO2, Safety of 2-Bromo-1-chloro-3-nitrobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gao, Ya; Huang, Dai-Chuan; Liu, Chang; Song, Zi-Long; Liu, Jing-Rui; Guo, Shu-Ke; Tan, Jun-Yang; Qiu, Run-Ling; Jin, Bing; Zhang, Haifeng; Mulholland, Nick; Han, Xinya; Xia, Qinfei; Ali, Abdallah S.; Guo, Dale; Deng, Yun; Gu, Yu-Cheng; Zhang, Ming-Zhi published the artcile< Streptochlorin analogues as potential antifungal agents: Design, synthesis, antifungal activity and molecular docking study>, Computed Properties of 3959-07-7, the main research area is streptochlorin analog synthesis antifungal agent mol docking; Antifungal activity; Imidazole; Molecular docking; Natural products; Streptochlorin.

Streptochlorin is a small mol. of indole alkaloid isolated from marine Streptomyces sp., it is a promising lead compound due to its potent bioactivity in preventing many phytopathogens in our previous study, but further structural modifications are required to improve its antifungal activity. Our work in this paper focused on the replacement of oxazole ring in streptochlorin with the imidazole ring, to discover novel analogs. Based on this design strategy, three series of streptochlorin analogs were efficiently synthesized through sequential Vilsmeier-Haack reaction, Van Leusen imidazole synthesis and halogenation reaction. Some of the analogs displayed excellent activity in the primary assay, and this is highlighted by compounds I and II, the growth inhibition against Alternaria Leaf Spot and Rhizoctorzia solani under 50μg/mL are 97.5% and 90.3%, resp., even more active than those of streptochlorin, pimprinine and Osthole. Mol. docking models indicated that streptochlorin binds with Thermus thermophiles Leucyl-tRNA Synthetase in a similar mode to AN2690, offering a perspective on the mode of action study for antifungal activities of streptochlorin derivatives Further study is still ongoing with the aim of discovering synthetic analogs, with improved antifungal activity and clear mode of action.

Bioorganic & Medicinal Chemistry published new progress about Cyclization. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Computed Properties of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xu, Zhihui; Yang, Tianbao; Tang, Niu; Ou, Yifeng; Yin, Shuang-Feng; Kambe, Nobuaki; Qiu, Renhua published the artcile< UV-Light-Induced N-Acylation of Amines with α-Diketones>, Synthetic Route of 3959-07-7, the main research area is amide preparation; amine alpha diketone photoinduced acylation.

Herein, a mild method for N-acylation of primary and secondary amines with α-diketones induced by UV light is reported. Forty-six examples with various functional groups are explored at room temperature with irradiation by three 26 W UV lamps (350-380 nm). The yield reaches 97%. The gram scale experiment product yield is 76%. Moreover, this system can be applied to the synthesis of several amino acid derivatives Mechanistic studies show that benzoin is generated in situ from benzil under UV irradiation

Organic Letters published new progress about Amides Role: SPN (Synthetic Preparation), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Synthetic Route of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wan, Nan-Wei; Cui, Hai-Bo; Zhao, Ling; Shan, Jing; Chen, Ke; Wang, Zhong-Qiang; Zhou, Xiao-Jian; Cui, Bao-Dong; Han, Wen-Yong; Chen, Yong-Zheng published the artcile< Directed evolution of cytochrome P450DA hydroxylase activity for stereoselective biohydroxylation>, Formula: C8H9Br, the main research area is chiral alc preparation stereoselective biohydroxylation cytochrome P450DA hydroxylase.

Engineering of a hydroxylase for highly active and stereoselective biohydroxylation of C(sp3)-H bonds attracts keen interest in synthetic chem. Herein, we report the development of a colorimetric high throughput screening assay for the directed evolution of cytochrome P450DA hydroxylase. The best triple-mutant P450DA-M3 (N190F/V356L/A486E) was identified with improvements in the turnover frequency (TOF) and total turnover number (TTN). P450DA-M3 exhibited good catalytic efficiency (up to 6750 TTNs) and stereoselectivity (up to 98% ee) in the biohydroxylation of diverse substrates. The heme domain structure of the P450DA was also solved for understanding the possible influence of these pos. mutations.

Catalysis Science & Technology published new progress about Aralkyl alcohols Role: BPN (Biosynthetic Preparation), BIOL (Biological Study), PREP (Preparation). 2725-82-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H9Br, Formula: C8H9Br.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Discekici, Emre H.; Treat, Nicolas J.; Poelma, Saemi O.; Mattson, Kaila M.; Hudson, Zachary M.; Luo, Yingdong; Hawker, Craig J.; de Alaniz, Javier Read published the artcile< Metal-free photoredox catalyst: design and application in radical dehalogenations>, Category: bromides-buliding-blocks, the main research area is metal free photoredox catalyst radical dehalogenations.

Here we report the use of 10-phenylphenothiazine (PTH) as an inexpensive, highly reducing metal-free photocatalyst for the reduction of carbon-halogen bonds via the trapping of carbon-centered radical intermediates with a mild hydrogen atom donor. Dehalogenations were carried out on various substrates with excellent yields at room temperature in the presence of air.

Chemical Communications (Cambridge, United Kingdom) published new progress about Dehalogenation. 17100-65-1 belongs to class bromides-buliding-blocks, and the molecular formula is C9H9BrO3, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Badir, Shorouk O.; Sim, Jaehoon; Billings, Katelyn; Csakai, Adam; Zhang, Xuange; Dong, Weizhe; Molander, Gary A. published the artcile< Multi-functional Building Blocks Compatible with Photo-redox-Mediated Alkylation for DNA-Encoded Library Synthesis>, Quality Control of 20776-50-5, the main research area is amino acid DNA synthesis coupling alkylation silylamine aminomethylation; alkyl bromide cross coupling alkylation silylamine DNA synthesis; photochem redox alkylation DNA encoded library synthesis.

DNA-encoded library (DEL) technol. has emerged as a novel interrogation modality for ligand discovery in the pharmaceutical industry. Given the increasing demand for a higher proportion of C(sp3)-hybridized centers in DEL platforms, a photoredox-mediated cross-coupling and defluorinative alkylation process is introduced using com. available alkyl bromides and structurally diverse α-silylamines. Notably, no protecting group strategies for amines are necessary for the incorporation of a variety of amino-acid-based organo-silanes, providing crucial branching points for further derivatization.

Organic Letters published new progress about Alkylation. 20776-50-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H6BrNO2, Quality Control of 20776-50-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yadav, Veena D.; Kumar, Lalan; Kumari, Poonam; Kumar, Sakesh; Singh, Maninder; Siddiqi, Mohammad I.; Yadav, Prem N.; Batra, Sanjay published the artcile< Synthesis and Assessment of Fused β-Carboline Derivatives as Kappa Opioid Receptor Agonists>, Recommanded Product: 3-(4-Bromophenyl)acrylaldehyde, the main research area is embryonic kidney cell kappa opioid receptor agonist cAMP; beta-carboline; kappa opioid receptor agonist; molecular modeling; nitrogen heterocycle; pain.

The synthesis of 5-formyl-6-aryl-6H-indolo[3,2,1-de][1,5] naphthyridine-2-carboxylates by reaction between 1-formyl-9H-β-carbolines and cinnamaldehydes in the presence of pyrrolidine in water with microwave irradiation is described. Pharmacophoric modification of the formyl group offered several new fused β-carboline derivatives, which were investigated for their κ-opioid receptor (KOR) agonistic activity. Two compounds 4 a and 4 c produced appreciable agonist activity on KOR with EC50 values of 46±19 and 134±9 nM, resp. Moreover, compound-induced KOR signaling studies suggested both compounds to be extremely G-protein-biased agonists. The analgesic effect of 4 a was validated by the increase in tail flick latency in mice in a time-dependent manner, which was completely blocked by the KOR-selective antagonist norBNI. Moreover, unlike U50488, an unbiased full KOR agonist, 4 a did not induce sedation. The docking of 4 a with the human KOR was studied to rationalize the result.

ChemMedChem published new progress about Alkenes Role: BUU (Biological Use, Unclassified), BIOL (Biological Study), USES (Uses). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Recommanded Product: 3-(4-Bromophenyl)acrylaldehyde.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary