Tag: 200-300

Targeting the Heat Shock Protein 90 Dimer with Dimeric Inhibitors was written by Kusuma, Bhaskar Reddy;Peterson, Laura B.;Zhao, Huiping;Vielhauer, George;Holzbeierlein, Jeffrey;Blagg, Brian S. J.. And the article was included in Journal of Medicinal Chemistry in 2011.Safety of Methyl 3-bromo-4-fluorobenzoate This article mentions the following:

The design, synthesis, and biol. evaluation of conformationally constrained coumermycin A1 analogs are reported. Compounds were evaluated against both breast cancer (SKBr3 and MCF7) and prostate cancer (PC3 mm2, A549, and HT29) cell lines. Non-noviosylated coumermycin A1 analogs that manifest potent antiproliferative activity resulting from Hsp90 inhibition are provided, wherein replacement of the stereochem. complex noviose sugar with readily available piperidine rings resulted in 閳?100 fold increase in antiproliferative activities as compared to coumermycin A1, producing small mol. Hsp90 inhibitors that exhibit nanomolar activities. In the experiment, the researchers used many compounds, for example, Methyl 3-bromo-4-fluorobenzoate (cas: 82702-31-6Safety of Methyl 3-bromo-4-fluorobenzoate).

Methyl 3-bromo-4-fluorobenzoate (cas: 82702-31-6) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Safety of Methyl 3-bromo-4-fluorobenzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sigma donor and pi acceptor characteristics of certain NN-bidentate ligands: a DFT Study was written by Maqsood, Syed Raashid;Islam, Nasarul;Bashir, Shabnum;Khan, Badruddin;Pandith, Altaf Hussain. And the article was included in Journal of Coordination Chemistry in 2013.Application In Synthesis of 2-Bromo-1,10-phenanthroline This article mentions the following:

Metal ion binding affinity of three NN bidentate ligands in terms of simple parameters of the conceptual d. functional theory is reported. Role of ligand framework for chelate stabilization for ethylenediamine (en) bipyridyl (bpy), and 1,10 phenanthroline (phen) is quantified on the basis of NCCN dihedral angle (锠? and N-N spatial distance. We find that the sigma (锜? donor character of three NN-bidentate ligands follow the order phen < bpy < en, which is quit opposite to their exptl. observed stability constant data. However, the overall binding affinity order is correlative with the chelate stabilization and pi back acceptance characteristics; thereby explaining the exptl. stability order. We also studied the effect of some electron donating and electron withdrawing substituents on the sigma bonding affinity and pi (锜? bonding behavior of the various substituted phen derivatives The overall binding affinity of these derivatives was correlated on the basis of electrophilicity index (锠?. 锜?Donor character for the ligands was observed to vary in the order NH₂ > Ph > OH > CH₃ > H > Br > Cl > COOH > NO₂ for the substitution at 2 and 9 positions. The trend was found in synergism with their Ortho, Para directing efficiencies. In the experiment, the researchers used many compounds, for example, 2-Bromo-1,10-phenanthroline (cas: 22426-14-8Application In Synthesis of 2-Bromo-1,10-phenanthroline).

2-Bromo-1,10-phenanthroline (cas: 22426-14-8) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Application In Synthesis of 2-Bromo-1,10-phenanthroline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Introduction of Cyclopropyl and Cyclobutyl Ring on Alkyl Iodides through Cobalt-Catalyzed Cross-Coupling was written by Andersen, Claire;Ferey, Vincent;Daumas, Marc;Bernardelli, Patrick;Guerinot, Amandine;Cossy, Janine. And the article was included in Organic Letters in 2019.Category: bromides-buliding-blocks This article mentions the following:

A cobalt-catalyzed cross-coupling between alkyl iodides and cyclopropyl, cyclobutyl, and alkenyl Grignard reagents is disclosed. The reaction allows the introduction of strained rings on a large panel of primary and secondary alkyl iodides. The catalytic system is simple and nonexpensive, and the reaction is general, chemoselective, and diastereoconvergent. The alkene resulting from the cross-coupling can be transformed to substituted cyclopropanes using a Simmons-Smith reaction. The formation of radical intermediates during the coupling is hypothesized. In the experiment, the researchers used many compounds, for example, 1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3Category: bromides-buliding-blocks).

1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Intramolecular trans-Dicarbofunctionalization of Alkynes by a Formal anti-Carbopalladation/Stille Cascade was written by Milde, Bastian;Reding, Andreas;Geffers, Finn J.;Jones, Peter G.;Werz, Daniel B.. And the article was included in Chemistry – A European Journal in 2016.Synthetic Route of C7H5Br2F This article mentions the following:

An intramol. Pd-catalyzed trans-dicarbofunctionalization of internal alkynes using aryl bromides and aryl stannanes was presented. Tetrasubstituted double bonds embedded in an oligocyclic ring system were obtained in a regio- and diastereoselective fashion. The transformation featured a broad substrate scope and functional-group tolerance. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0Synthetic Route of C7H5Br2F).

2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon鑱砨romine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Synthetic Route of C7H5Br2F

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cyanine Borate Salts that Form Penetrated Ion Pairs in Benzene Solution: Synthesis, Properties, and Structure was written by Murphy, Sean;Yang, Xiquiang;Schuster, Gary B.. And the article was included in Journal of Organic Chemistry in 1995.Reference of 162258-89-1 This article mentions the following:

A series of cyanine borate salts were prepared and studied by laser spectroscopy, fluorescence spectroscopy, NMR spectral methods, and computer modeling. Anal. of the chem., phys., and spectral properties of these salts shows that, in benzene solution, they form penetrated ion pairs. The center-to-center distance between the ions is less than the sum of the individual ionic radii. We call such structures penetrated ion pairs. Penetration affects the properties of the cyanine dyes in unique ways that are described. In the experiment, the researchers used many compounds, for example, 4-Bromo-4′-tert-butylbiphenyl (cas: 162258-89-1Reference of 162258-89-1).

4-Bromo-4′-tert-butylbiphenyl (cas: 162258-89-1) belongs to organobromine compounds. Most of the natural organobromine compounds are produced by marine organisms, and several brominated metabolites with antibacterial, antitumor, antiviral, and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Reference of 162258-89-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Semi-quantitative models for identifying potent and selective transthyretin amyloidogenesis inhibitors was written by Connelly, Stephen;Mortenson, David E.;Choi, Sungwook;Wilson, Ian A.;Powers, Evan T.;Kelly, Jeffery W.;Johnson, Steven M.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2017.SDS of cas: 108940-96-1 This article mentions the following:

Rate-limiting dissociation of the tetrameric protein transthyretin (TTR), followed by monomer misfolding and misassembly, appears to cause degenerative diseases in humans known as the transthyretin amyloidoses, based on human genetic, biochem. and pharmacol. evidence. Small mols. that bind to the generally unoccupied thyroxine binding pockets in the native TTR tetramer kinetically stabilize the tetramer, slowing subunit dissociation proportional to the extent that the mols. stabilize the native state over the dissociative transition state-thereby inhibiting amyloidogenesis. Herein, the authors use previously reported structure-activity relationship data to develop two semi-quant. algorithms for identifying the structures of potent and selective transthyretin kinetic stabilizers/amyloidogenesis inhibitors. The viability of these prediction algorithms, in particular the more robust in silico docking model, is perhaps best validated by the clin. success of tafamidis, the first-in-class drug approved in Europe, Japan, South America, and elsewhere for treating transthyretin aggregation-associated familial amyloid polyneuropathy. Tafamidis is also being evaluated in a fully-enrolled placebo-controlled clin. trial for its efficacy against TTR cardiomyopathy. These prediction algorithms will be useful for identifying second generation TTR kinetic stabilizers, should these be needed to ameliorate the central nervous system or ophthalmol. pathol. caused by TTR aggregation in organs not accessed by oral tafamidis administration. In the experiment, the researchers used many compounds, for example, 3,5-Dibromo-4-methoxybenzaldehyde (cas: 108940-96-1SDS of cas: 108940-96-1).

3,5-Dibromo-4-methoxybenzaldehyde (cas: 108940-96-1) belongs to organobromine compounds. Most of the natural organobromine compounds are produced by marine organisms, and several brominated metabolites with antibacterial, antitumor, antiviral, and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.SDS of cas: 108940-96-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

An iron(II)-based metalloradical system for intramolecular amination of C(sp²)-H and C(sp³)-H bonds: synthetic applications and mechanistic studies was written by Das, Sandip Kumar;Das, Subrata;Ghosh, Supratim;Roy, Satyajit;Pareek, Monika;Roy, Brindaban;Sunoj, Raghavan B.;Chattopadhyay, Buddhadeb. And the article was included in Chemical Science in 2022.Recommanded Product: Ethyl (2-bromophenyl)acetate This article mentions the following:

A catalytic system for intramol. C(sp²)-H and C(sp³)-H amination of substituted tetrazolopyridines was successfully developed. The amination reactions were developed using an iron-porphyrin based catalytic system. It was demonstrated that the same iron-porphyrin based catalytic system efficiently activates both the C(sp²)-H and C(sp³)-H bonds of the tetrazole as well as azide-featuring substrates with a high level of regioselectivity. The method exhibited an excellent functional group tolerance. The method afforded three different classes of high-value N-heterocyclic scaffolds. A number of important late-stage C-H aminations were performed to access important classes of mols. Detailed studies (exptl. and computational) showed that both the C(sp²)-H and C(sp³)-H amination reactions involve a metalloradical activation mechanism, which is different from the previously reported electro-cyclization mechanism. Collectively, this study reports the discovery of a new class of metalloradical activation modes using a base metal catalyst that should find wide application in the context of medicinal chem., drug discovery and industrial applications. In the experiment, the researchers used many compounds, for example, Ethyl (2-bromophenyl)acetate (cas: 2178-24-7Recommanded Product: Ethyl (2-bromophenyl)acetate).

Ethyl (2-bromophenyl)acetate (cas: 2178-24-7) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Recommanded Product: Ethyl (2-bromophenyl)acetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lewis base-promoted carbon-carbon sp³-sp³ coupling reactions of 浼?silyl silylethers was written by Brekan, Jonathan A.;Chernyak, Dmitri;White, Kolby L.;Scheidt, Karl A.. And the article was included in Chemical Science in 2012.Application In Synthesis of 1-(3-Bromopropyl)-4-methoxybenzene This article mentions the following:

A Lewis base-promoted addition of 浼?silyl silylethers to primary halides has been developed. This new carbon-carbon sp³-sp³ bond-forming process accesses an unconventional reactivity pattern (d¹ synthon) from easily accessible precursors. The strategy accommodates a variety of primary alkyl, allylic and benzylic electrophiles and 浼?silyl silylethers. These d¹ synthons have also been used in the synthesis of cross pinacol and benzil products. Mechanistic studies indicate significant intermol. silyl group exchange during the reaction. In the experiment, the researchers used many compounds, for example, 1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3Application In Synthesis of 1-(3-Bromopropyl)-4-methoxybenzene).

1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Application In Synthesis of 1-(3-Bromopropyl)-4-methoxybenzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis and evaluation of benzenesulfonic acid derivatives as human neutrophil elastase (hNE) inhibitors was written by Xu, Yanzhao;Qi, Na;Wen, Hui;Zhang, Gang;Wang, Yuchen;Cui, Huaqing. And the article was included in Medicinal Chemistry Research in 2021.Name: 3-Bromobenzene-1-sulfonyl fluoride This article mentions the following:

Herein we report our investigation concerning the development of Human neutrophil elastase (hNE) inhibitors for the treatment of Acute Respiratory Distress Syndrome (ARDS). Various benzenesulfonic acid derived compounds were synthesized and evaluated as competitive inhibitors of hNE. Biol. screening revealed that compound 4f shows moderate inhibitory activity (IC50 = 35.2娓璏) against hNE. Compound 4f was also superimposed onto the active center of hNE to understand the binding mode. In the experiment, the researchers used many compounds, for example, 3-Bromobenzene-1-sulfonyl fluoride (cas: 454-65-9Name: 3-Bromobenzene-1-sulfonyl fluoride).

3-Bromobenzene-1-sulfonyl fluoride (cas: 454-65-9) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Name: 3-Bromobenzene-1-sulfonyl fluoride

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Orthosteric-allosteric dual inhibitors of PfHT1 as selective antimalarial agents was written by Huang, Jian;Yuan, Yafei;Zhao, Na;Pu, Debing;Tang, Qingxuan;Zhang, Shuo;Luo, Shuchen;Yang, Xikang;Wang, Nan;Xiao, Yu;Zhang, Tuan;Liu, Zhuoyi;Sakata-Kato, Tomoyo;Jiang, Xin;Kato, Nobutaka;Yan, Nieng;Yin, Hang. And the article was included in Proceedings of the National Academy of Sciences of the United States of America in 2021.Recommanded Product: N-(5-Bromopentyl)phthalimide This article mentions the following:

Artemisinin-resistant malaria parasites have emerged and have been spreading, posing a significant public health challenge. Antimalarial drugs with novel mechanisms of action are therefore urgently needed. In this report, we exploit a ‘selective starvation’ strategy by inhibiting Plasmodium falciparum hexose transporter 1 (PfHT1), the sole hexose transporter in P. falciparum, over human glucose transporter 1 (hGLUT1), providing an alternative approach to fight against multidrug-resistant malaria parasites. The crystal structure of hGLUT3, which shares 80% sequence similarity with hGLUT1, was resolved in complex with C3361, a moderate PfHT1-specific inhibitor, at 2.3-鑴?resolution Structural comparison between the present hGLUT3-C3361 and our previously reported PfHT1-C3361 confirmed the unique inhibitor binding-induced pocket in PfHT1. We then designed small mols. to simultaneously block the orthosteric and allosteric pockets of PfHT1. Through extensive structure-activity relationship studies, the TH-PF series was identified to selectively inhibit PfHT1 over hGLUT1 and potent against multiple strains of the blood-stage P. falciparum. Our findings shed light on the next-generation chemotherapeutics with a paradigm-shifting structure-based design strategy to simultaneously target the orthosteric and allosteric sites of a transporter. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Recommanded Product: N-(5-Bromopentyl)phthalimide).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) belongs to organobromine compounds. 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. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Recommanded Product: N-(5-Bromopentyl)phthalimide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary