Month: November 2022

The author of 《Design and Synthesis of WJ-Phos, and Application in Cu-Catalyzed Enantioselective Boroacylation of 1,1-Disubstituted Allenes》 were Han, Jie; Zhou, Wei; Zhang, Pei-Chao; Wang, Huamin; Zhang, Ronghua; Wu, Hai-Hong; Zhang, Junliang. And the article was published in ACS Catalysis in 2019. Category: bromides-buliding-blocks The author mentioned the following in the article:

The highly enantioselective copper-catalyzed three-component boroacylation of 1,1-disubstituted allenes is reported by using a class of chiral ligands (WJ-Phos), delivering various functionalized organoboron compounds bearing an all-carbon stereocenter in moderate to good yields with high enantioselectivities. WJ-Phos is a ferrocene-derived chiral sulfinamide phosphine ligand and can be easily synthesized in gram-scale from readily available starting materials in short steps. The salient features of this reaction include moderate to good yields, high enantioselectivities, gram-scale synthesis, diverse synthetic transformations, and the development of a new chiral ligand. In the part of experimental materials, we found many familiar compounds, such as Methyltriphenylphosphonium bromide(cas: 1779-49-3Category: bromides-buliding-blocks)

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is an organophosphorus compound, with potential use as a precursor and a solvent in organic synthesis. And it is used widely for methylenation via the Wittig reaction.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Synthesis and structures of bis(iminophosphorano)methanide chelate complexes with zinc and group 13》 were Zhang, Jin; Ge, Sai; Zhao, Jianguo; Ulhaq, Imran; Ferguson, Michael J.; McDonald, Robert; Ma, Guibin; Cavell, Ronald G.. And the article was published in Polyhedron in 2019. Category: bromides-buliding-blocks The author mentioned the following in the article:

The organolithium bis(iminophosphorano)methandiide dimer [Li2C(Ph2P=NSiMe3)2]2 ([Li2-1]2) reacts with 4 equiv of AlCl3 in THF to generate the novel bimetallic Al carbene complex of [Li(THF)4][{C(Ph2P=NSiMe3)2}Al2Cl5] (1). Several new bis(iminophosphorano)methanide chelate-coordinated complexes of [{CH(Ph2P=NSiMe3)2}AlCl2] (2), [{CH(Ph2P=NSiMe3)2}GaBr2] (3), [{CH(Ph2P=NSiMe3)2}InCl2] (4), and [{CH(Ph2P=NSiMe3)2}InBr2] (5) were synthesized in situ while organolithium bis(iminophosphorano)methandiide ([Li2-1]2) reacts with 2 equiv of metal halides AlCl3, GaBr3 InCl3 and InBr3 resp. in THF. Also, an unexpected complex of [{CH2(Ph2P=NSiMe3)2}ZnCl2] (6) is formed as [Li2-1]2 dimer reacted with 2 equiv of ZnCl2 in situ. All six synthesized complexes (1-6) were isolated in the solid state and were structurally characterized by x-ray diffraction. Complexes containing particular carbene to metal or ionic linking interaction bonds (1-4) were selected and further characterized in detail by DFT calculations using Gaussian03 program. The DFT calculation demonstrates the existence of a carbene-Al σ bond in structure 1 and ionic linkage interaction in structures 2-4. In the experiment, the researchers used Indium(III) bromide(cas: 13465-09-3Category: bromides-buliding-blocks)

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《An imidazole coumarin derivative enhances the antiviral response to spring viremia of carp virus infection in zebrafish》 were Liu, Lei; Hu, Yang; Lu, Jianfei; Wang, Gaoxue. And the article was published in Virus Research in 2019. Electric Literature of C6H12Br2 The author mentioned the following in the article:

As an efficient pathogen resulting in economic impact in aquaculture, spring viremia of carp virus (SVCV) causes devastating disease in cyprinids. Based on the previous study that 7-(6-(2-methyl-imidazole))-coumarin (D5) exhibited anti-SVCV activity in fish cells, we hypothesized that D5 may be useful as a potential therapeutic agent for controlling SVCV infection in vivo. In this study, we verified that D5 inhibited SVCV replication in zebrafish, with reducing 22.5% mortality of SVCV-infected fish. Further data suggested that coumarin D5 was more stable with a prolonged inhibitory half-life in the early stage of virus infection (1-4 days). Consistent with above results, D5 decreased the viral titer in fish body and repressed SVCV glycoprotein gene expression in virus sensitive tissues (kidney and spleen) in the early stage of virus infection. In addition, the results replied that D5 elicited an innate immune response in non-viral infected zebrafish by up-regulating the expression of interferon genes (IFNγ, IFNφ1, IFNφ2 and RIG-1). D5 also enhanced the levels of antioxidant-related gene transcription and enzyme activities in SVCV-infected zebrafish, suggesting that D5 exhibited an antioxidant protection on fish by keeping the balance of redox state. Therefore, D5 is a potential therapeutic agent for the devastating fish rhabdovirus infections. The experimental part of the paper was very detailed, including the reaction process of 1,6-Dibromohexane(cas: 629-03-8Electric Literature of C6H12Br2)

1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Electric Literature of C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Spermine modified polymeric micelles with pH-sensitive drug release for targeted and enhanced antitumor therapy》 were Chen, Yang; Yang, Cejun; Mao, Juan; Li, Haigang; Ding, Jinsong; Zhou, Wenhu. And the article was published in RSC Advances in 2019. Computed Properties of C5H9BrO2 The author mentioned the following in the article:

Tumor targeting delivery of chemotherapeutic drugs by nanocarriers has been demonstrated to be a promising strategy for cancer therapy with improved therapeutic efficacy. In this work, we reported a novel type of active targeting micelle with pH-responsive drug release by using biodegradable poly(lactide)-poly(2-ethyl-2-oxazoline) di-block copolymers functionalized with spermine (SPM). SPM has been considered as a tumor binding ligand through its specific interaction with the polyamine transport system (PTS), a transmembrane protein overexpressed on various types of cancer cell, while its application in nano-drug delivery systems has rarely been explored. The micelles with spherical shape (~110 nm) could load hydrophobic paclitaxel (PTX) with high capacity, and release the payload much faster at acidic pH (4.5-6.5) than at pH 7.4. This pH-responsive property assisted the rapid escape of drug from the endo/lysosome after internalization as demonstrated by confocal laser scanning microscopy images using coumarin-6 (Cou-6) as a fluorescent probe. With surface SPM modification, the micelles displayed much higher cellular uptake than SPM lacking micelles in various types of cancer cells, demonstrating tumor targeting ability. The uptake mechanism of SPM modified micelles was explored by flow cytometry, which suggested an energy-consuming sag vesicle-mediated endocytosis pathway. As expected, the micelles displayed significantly enhanced anti-cancer activity. This work demonstrates that SPM modified pH-sensitive micelles may be potential drug delivery vehicles for targeting and effective cancer therapy. In the experimental materials used by the author, we found Ethyl 3-bromopropanoate(cas: 539-74-2Computed Properties of C5H9BrO2)

Ethyl 3-bromopropanoate(cas: 539-74-2) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides. Computed Properties of C5H9BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Degradable PE-Based Copolymer with Controlled Ester Structure Incorporation by Cobalt-Mediated Radical Copolymerization under Mild Condition》 was published in iScience in 2020. These research results belong to Zeng, Tianyou; You, Wei; Chen, Guang; Nie, Xuan; Zhang, Ze; Xia, Lei; Hong, Chunyan; Chen, Changle; You, Yezi. Related Products of 2623-87-2 The article mentions the following:

Polyethylene (PE) is one of the most widely used materials in the world, but it is virtually undegradable and quickly accumulates in nature, which may contaminate the environment. We utilized the cobalt-mediated radical copolymerization (CMRP) of ethylene and cyclic ketene acetals (CKAs) to effectively incorporate ester groups into PE backbone as cleavable structures to make PE-based copolymer degradable under mild conditions. The content of ethylene and ester units in the produced copolymer could be finely regulated by CKA concentration or ethylene pressure. Also, the copolymerization of ethylene and CKA with other functional vinyl monomers can produce functional and degradable PE-based copolymer. All the formed PE-based copolymers could degrade in the presence of trimethylamine (Et3N). In the part of experimental materials, we found many familiar compounds, such as 4-Bromobutanoic acid(cas: 2623-87-2Related Products of 2623-87-2)

4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).Related Products of 2623-87-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Trapping of Transient Thienyllithiums Generated by Deprotonation of 2,3- or 2,5-Dibromothiophene in a Flow Microreactor》 was published in Synlett in 2020. These research results belong to Okano, Kentaro; Yamane, Yoshiki; Nagaki, Aiichiro; Mori, Atsunori. Formula: C4H2Br2S The article mentions the following:

Selective trapping of (4,5-dibromo-2-thienyl)lithium, known to undergo halogen dance, was achieved in a flow microreactor. This transient thienyllithium, generated by mixing 2,3-dibromothiophene and lithium diisopropylamide at -78°C for 1.6 s, reacted with benzaldehyde. The reaction system is also applicable to other carbonyl compounds to afford the corresponding adducts in good yields. Moreover, the established conditions permit the conversion of 2,5-dibromothiophene into a mixture of the two constitutional isomers. The contrasting results are discussed on the basis of the reaction pathway. In the experiment, the researchers used 2,5-Dibromothiophene(cas: 3141-27-3Formula: C4H2Br2S)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Formula: C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Structure-activity relationships and biological evaluation of 7-substituted harmine analogs for human β-cell proliferation》 was written by Kumar, Kunal; Wang, Peng; Swartz, Ethan A.; Khamrui, Susmita; Secor, Cody; Lazarus, Michael B.; Sanchez, Roberto; Stewart, Andrew F.; DeVita, Robert J.. Product Details of 3395-91-3 And the article was included in Molecules in 2020. The article conveys some information:

Recently, we have shown that harmine induces β-cell proliferation both in vitro and in vivo, mediated via the DYRK1A-NFAT pathway. We explore structure-activity relationships of the 7-position of harmine for both DYRK1A kinase inhibition and β-cell proliferation based on our related previous structure-activity relationship studies of harmine in the context of diabetes and β-cell specific targeting strategies. Thirty three harmine analogs of the 7-position substituent were synthesized and evaluated for biol. activity. Two novel inhibitors were identified which showed DYRK1A inhibition and human β-cell proliferation capability. The DYRK1A inhibitor, compound 3-(7-oxy-1-methyl-9-H-b-carbolin)propionic acid Me ester, induced β-cell proliferation half that of harmine at three times higher concentration From these studies we can draw the inference that 7-position modification is limited for further harmine optimization focused on β-cell proliferation and cell-specific targeting approach for diabetes therapeutics. In addition to this study using Methyl 3-bromopropanoate, there are many other studies that have used Methyl 3-bromopropanoate(cas: 3395-91-3Product Details of 3395-91-3) was used in this study.

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact.Product Details of 3395-91-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Facile synthesis of NH-free 5-(hetero)aryl-pyrrole-2-carboxylates by catalytic C-H borylation and Suzuki coupling》 was written by Kanwal, Saba; Noor-ul-Ann; Fatima, Saman; Emwas, Abdul-Hamid; Alazmi, Meshari; Gao, Xin; Ibrar, Maha; Saleem, Rahman Shah Zaib; Chotana, Ghayoor Abbas. Quality Control of 1-Bromo-3,4,5-trimethoxybenzene And the article was included in Molecules in 2020. The article conveys some information:

A convenient two-step preparation of NH-free 5-aryl-pyrrole-2-carboxylates is described. The synthetic route consists of catalytic borylation of com. available pyrrole-2-carboxylate ester followed by Suzuki coupling without going through pyrrole N-H protection and deprotection steps. The resulting 5-aryl substituted pyrrole-2-carboxylates were synthesized in good to excellent yields. This synthetic route can tolerate a variety of functional groups including those with acidic protons on the aryl bromide coupling partner. This methodol. is also applicable for cross-coupling with heteroaryl bromides to yield pyrrole-thiophene, pyrrole-pyridine, and 2,3′-bi-pyrrole based bi-heteroaryls. In the experiment, the researchers used many compounds, for example, 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Quality Control of 1-Bromo-3,4,5-trimethoxybenzene)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Quality Control of 1-Bromo-3,4,5-trimethoxybenzene1-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Practical Synthesis of the Fluorogenic Enzyme Substrate 4-Methylumbelliferyl α-L-Idopyranosiduronic Acid》 was written by Tian, Jiameng; Ouyang, Wenliang; He, Yanling; Ning, Qianqian; Bai, Jiang; Ding, Haixin; Xiao, Qiang. Product Details of 21085-72-3 And the article was included in Synlett in 2020. The article conveys some information:

A practical and concise synthesis of 4-methylumbelliferyl α-L-idopyranosiduronic acid, a fluorogenic enzyme substrate diagnostic for α-L-iduronidase, was accomplished. It features successive radical bromination and radical reduction of easily accessible Me 4-methylumbelliferyl-2,3,4-tri-O-acetyl-β- D-glucouronate in four steps with 28% overall yield. The experimental part of the paper was very detailed, including the reaction process of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Product Details of 21085-72-3)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.Product Details of 21085-72-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Melin, Lea; Abdullayev, Shuay; Fnaiche, Ahmed; Vu, Victoria; Gonzalez Suarez, Narjara; Zeng, Hong; Szewczyk, Magdalena M.; Li, Fengling; Senisterra, Guillermo; Allali-Hassani, Abdellah; Chau, Irene; Dong, Aiping; Woo, Simon; Annabi, Borhane; Halabelian, Levon; LaPlante, Steven R.; Vedadi, Masoud; Barsyte-Lovejoy, Dalia; Santhakumar, Vijayaratnam; Gagnon, Alexandre published their research in ChemMedChem in 2021. The article was titled 《Development of LM98, a Small-Molecule TEAD Inhibitor Derived from Flufenamic Acid》.HPLC of Formula: 1530-32-1 The article contains the following contents:

The YAP-TEAD transcriptional complex is responsible for the expression of genes that regulate cancer cell growth and proliferation. Dysregulation of the Hippo pathway due to overexpression of TEAD has been reported in a wide range of cancers. Inhibition of TEAD represses the expression of associated genes, demonstrating the value of this transcription factor for the development of novel anti-cancer therapies. We report herein the design, synthesis and biol. evaluation of LM98, a flufenamic acid analog. LM98 shows strong affinity to TEAD, inhibits its autopalmitoylation and reduces the YAP-TEAD transcriptional activity. Binding of LM98 to TEAD was supported by 19F-NMR studies while co-crystallization experiments confirmed that LM98 is anchored within the palmitic acid pocket of TEAD. LM98 reduces the expression of CTGF and Cyr61, inhibits MDA-MB-231 breast cancer cell migration and arrests cell cycling in the S phase during cell division. In the experiment, the researchers used many compounds, for example, Ethyltriphenylphosphonium bromide(cas: 1530-32-1HPLC of Formula: 1530-32-1)

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.HPLC of Formula: 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary