Tag: 200-300

Tricyclic pharmacophore-based molecules as novel integrin α_vβ₃ antagonists. Part IV: Preliminary control of α_vβ₃ selectivity by meta-oriented substitution was written by Kubota, Dai;Ishikawa, Minoru;Ishikawa, Midori;Yahata, Naokazu;Murakami, Shoichi;Fujishima, Kazuyuki;Kitakaze, Masafumi;Ajito, Keiichi. And the article was included in Bioorganic & Medicinal Chemistry in 2006.Formula: C8H6BrFO2 This article mentions the following:

To establish the in vivo efficacy of α_vβ₃/α_IIbβ₃ dual antagonists possessing a tricyclic pharmacophore, a corresponding α_vβ₃-selective antagonist was required as a control. We initially took two synthetic approaches to obtain α_vβ₃-selective antagonists based on the RGD recognition pattern or on modification of the dihedral angle between the central benzene ring and the adjacent heterocycle, but both proved unsuccessful. However, synthesis of novel antagonists with meta-substitution of the central benzene ring generated weak selectivity for α_vβ₃ over α_IIbβ₃ for the first time in the family of compounds with the tricyclic pharmacophore. Optimization of meta-oriented antagonists furnished an α_vβ₃-selective antagonist exhibiting inhibitory activity not only in a receptor-binding assay, but also in a cell adhesion assay. In the experiment, the researchers used many compounds, for example, Methyl 3-bromo-5-fluorobenzoate (cas: 334792-52-8Formula: C8H6BrFO2).

Methyl 3-bromo-5-fluorobenzoate (cas: 334792-52-8) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. 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.Formula: C8H6BrFO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dynamic Kinetic Resolution of Biaryl Atropisomers via Peptide-Catalyzed Asymmetric Bromination was written by Gustafson, Jeffrey L.;Lim, Daniel;Miller, Scott J.. And the article was included in Science (Washington, DC, United States) in 2010.Safety of Methyl 2-bromo-4-fluorobenzoate This article mentions the following:

Despite the widespread use of axially chiral, or atropisomeric, biaryl ligands in modern synthesis and the occurrence of numerous natural products exhibiting axial chirality, few catalytic methods have emerged for the direct asym. preparation of this compound class. Here, the authors present a tripeptide-derived small-mol. catalyst for the dynamic kinetic resolution of racemic biaryl substrates. The reaction proceeds via an atropisomer-selective electrophilic aromatic substitution reaction using simple bromination reagents. The result is an enantioselective synthesis that delivers chiral nonracemic biaryl compounds with excellent optical purity and good isolated chem. yields (in most cases a >95:5 enantiomer ratio and isolated yields of 65 to 87%). A mechanistic model is advanced that accounts for the basis of selectivity observed In the experiment, the researchers used many compounds, for example, Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9Safety of Methyl 2-bromo-4-fluorobenzoate).

Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. 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.Safety of Methyl 2-bromo-4-fluorobenzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis of 6,7-Dibromoflavone and Its Regioselective Diversification via Suzuki-Miyaura Reactions was written by Jordan, Sandor;Pajtas, David;Patonay, Tamas;Langer, Peter;Konya, Krisztina. And the article was included in Synthesis in 2017.Computed Properties of C8H7BrO2 This article mentions the following:

The first synthesis pathway to 6,7-dibromoflavone and its transformations to 7-aryl-6-bromo- and 6,7-diarylflavones by Suzuki-Miyaura reactions are presented. Due to the different electronic effects of bromo substituents, the first attack proceeded with good site selectivity at position 7. In the experiment, the researchers used many compounds, for example, 3-Bromophenyl acetate (cas: 35065-86-2Computed Properties of C8H7BrO2).

3-Bromophenyl acetate (cas: 35065-86-2) 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. 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.Computed Properties of C8H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

QSAR’s from similarity matrices. Technique validation and application in the comparison of different similarity evaluation methods was written by Good, Andrew C.;Peterson, Stephen J.;Richards, W. Graham. And the article was included in Journal of Medicinal Chemistry in 1993.SDS of cas: 6515-58-8 This article mentions the following:

It has recently been shown that good quant. structure-activity relationships can be obtained through statistical anal. of mol. similarity matrixes. Here we extend the technique to seven addnl. mol. series, previously studied using Comparative Mol. Field Anal. (CoMFA) methodol. The results are used to confirm technique applicability across a wider range of QSAR problems and to compare quant. the ability of various similarity indexes to describe biol. systems. The relative merits of this technique in comparison to CoMFA are discussed. In the experiment, the researchers used many compounds, for example, 3-(Bromomethyl)benzoic acid (cas: 6515-58-8SDS of cas: 6515-58-8).

3-(Bromomethyl)benzoic acid (cas: 6515-58-8) 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). When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.SDS of cas: 6515-58-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis and fungicidal activities of boscalid and its analogs was written by Yu, Kang-ping;Li, Ze-fang;Yin, Hong-bo;Liu, Mu-lan;Li, Hui. And the article was included in Xiandai Nongyao in 2015.Safety of 4-Bromo-4′-tert-butylbiphenyl This article mentions the following:

A novel method was employed for preparing boscalid and its alkyl analogs via Friedel-Crafts alkylation, nitration, reduction, condensation, and reverse Friedel-Crafts alkylation from 4-halobiphenyl. Then boscalid and seven analogs were confirmed by ¹H NMR, mass spectrum and IR anal. Preliminary bioassays indicated that the target compounds were effective to some of tested pathogens at 50 mg/L. In the experiment, the researchers used many compounds, for example, 4-Bromo-4′-tert-butylbiphenyl (cas: 162258-89-1Safety of 4-Bromo-4′-tert-butylbiphenyl).

4-Bromo-4′-tert-butylbiphenyl (cas: 162258-89-1) 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. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Safety of 4-Bromo-4′-tert-butylbiphenyl

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Indanylidenes. 2. Design and Synthesis of (E)-2-(4-Chloro-6-fluoro-1-indanylidene)-N-methylacetamide, a Potent Antiinflammatory and Analgesic Agent without Centrally Acting Muscle Relaxant Activity was written by Musso, David L.;Orr, G. Faye;Cochran, Felicia R.;Kelley, James L.;Selph, Jeffrey L.;Rigdon, Greg C.;Cooper, Barrett R.;Jones, Michael L.. And the article was included in Journal of Medicinal Chemistry in 2003.Computed Properties of C7H5Br2F This article mentions the following:

Extension of the structure-activity relationship studies that led to the discovery of the nonsedating potent muscle relaxant, antiinflammatory, and analgesic agent (E)-2-(4,6-difluoro-1-indanylidene)acetamide has given rise to (E)-2-(4-chloro-6-fluoro-1-indanylidene)-N-methylacetamide (I). I is a potent antiinflammatory and analgesic agent without centrally acting muscle relaxant activity. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0Computed Properties of C7H5Br2F).

2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0) 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.Computed Properties of C7H5Br2F

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

A Multivalent Approach to the Design and Discovery of Orally Efficacious 5-HT₄ Receptor Agonists was written by McKinnell, R. Murray;Armstrong, Scott R.;Beattie, David T.;Choi, Seok-Ki;Fatheree, Paul R.;Gendron, Roland A. L.;Goldblum, Adam;Humphrey, Patrick P.;Long, Daniel D.;Marquess, Daniel G.;Shaw, J. P.;Smith, Jacqueline A. M.;Turner, S. Derek;Vickery, Ross G.. And the article was included in Journal of Medicinal Chemistry in 2009.Product Details of 954-81-4 This article mentions the following:

5-HT₄ receptor agonists such as tegaserod have demonstrated efficacy in the treatment of constipation predominant irritable bowel syndrome (IBS-C), a highly prevalent disorder characterized by chronic constipation and impairment of intestinal propulsion, abdominal bloating, and pain. The 5-HT₄ receptor binding site can accommodate functionally and sterically diverse groups attached to the amine nitrogen atom of common ligands, occupying what may be termed a “secondary” binding site. Using a multivalent approach to lead discovery, the effects of varying the position and nature of the secondary binding group were investigated as a strategy to achieve the desired 5-HT₄ agonist pharmacol. profile. It was shown that the ability of amine-based secondary binding groups to impart exceptional gains in the binding affinity, selectivity, and functional potency of 5-HT₄ agonists. Optimization of the leads generated by this approach afforded compound I, a selective, orally efficacious 5-HT₄ agonist for the potential treatment of gastrointestinal motility-related disorders. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Product Details of 954-81-4).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. 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.Product Details of 954-81-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Isoform-Selective and Stereoselective Inhibition of Hypoxia Inducible Factor-2 was written by Scheuermann, Thomas H.;Stroud, Daniel;Sleet, Christopher E.;Bayeh, Liela;Shokri, Cameron;Wang, Hanzhi;Caldwell, Charles G.;Longgood, Jamie;MacMillan, John B.;Bruick, Richard K.;Gardner, Kevin H.;Tambar, Uttam K.. And the article was included in Journal of Medicinal Chemistry in 2015.Name: Methyl 3-bromo-5-fluorobenzoate This article mentions the following:

Hypoxia inducible factor (HIF) transcription factors reside at the center of signaling pathways used by mammalian cells to sense and respond to low oxygen levels. While essential to maintain oxygen homeostasis, misregulation of HIF protein activity correlates with tumor development and metastasis. To provide artificial routes to target misregulated HIF activity, the authors identified small mol. antagonists of the HIF-2 transcription factor that bind an internal cavity within the C-terminal PAS domain of the HIF-2α subunit. Here the authors describe a new class of chiral small mol. ligands that provide the highest affinity binding, the most effective, isoform-selective inhibition of HIF-2 in cells, and trigger the largest protein conformation changes reported to date. The current results further illuminate the mol. mechanism of HIF-2 antagonism and suggest addnl. routes to develop higher affinity and potency HIF-2 antagonists. In the experiment, the researchers used many compounds, for example, Methyl 3-bromo-5-fluorobenzoate (cas: 334792-52-8Name: Methyl 3-bromo-5-fluorobenzoate).

Methyl 3-bromo-5-fluorobenzoate (cas: 334792-52-8) 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. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Name: Methyl 3-bromo-5-fluorobenzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Syntheses of polyfunctionalized resveratrol derivatives using Wittig and Heck protocols was written by Chalal, Malik;Vervandier-Fasseur, Dominique;Meunier, Philippe;Cattey, Helene;Hierso, Jean-Cyrille. And the article was included in Tetrahedron in 2012.Name: 5-Bromo-2-(hydroxymethyl)phenol This article mentions the following:

Improved protocols for Wittig reaction and palladium-catalyzed Heck coupling give expedient access to a series of unprecedented polyfunctionalized artificial-resveratrol derivatives, e.g., I. In the modified Wittig protocol, trimethylsilyl was used as a highly valuable protective group of the phenolic functions of starting aromatic materials. A clean O-alkylation of hydroxylated stilbenes with ethylene carbonate was also conducted. Thus, Wittig reaction followed by hydroxyethylation take place one-pot with only carbon dioxide as waste. Addnl., a palladium-catalyzed Heck coupling strategy was developed by using ferrocenyl phosphane ligands, and multi-functionalized hydroxylated stilbenes were obtained without the need of any protection/deprotection sequence. Up to six functional groups are introduced by these procedures, which limit the number of reaction steps, the waste toxicity, and the use of costly reagents. In the experiment, the researchers used many compounds, for example, 5-Bromo-2-(hydroxymethyl)phenol (cas: 170434-11-4Name: 5-Bromo-2-(hydroxymethyl)phenol).

5-Bromo-2-(hydroxymethyl)phenol (cas: 170434-11-4) 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. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Name: 5-Bromo-2-(hydroxymethyl)phenol

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

An integration of condensation/Ullmann-type coupling/bicyclization sequences: copper-catalyzed three-component direct synthesis of [1,2,4]triazolo[1,5-b]isoquinolin-5(1H)-ones was written by Jia, Feng-Cheng;Xu, Cheng;Cai, Qun;Wu, An-Xin. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2014.SDS of cas: 653-92-9 This article mentions the following:

A highly efficient three-component domino protocol has been developed for the synthesis of [1,2,4]triazolo[1,5-b]isoquinolin-5(1H)-ones from simple and readily available o-halogenated benzohydrazides, aldehydes and nitriles. This domino process involves sequential selective condensation, copper-catalyzed intermol. C-arylation and bicyclization. Notably, the use of ligands and anaerobic conditions can be avoided in this reaction. In the experiment, the researchers used many compounds, for example, Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9SDS of cas: 653-92-9).

Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9) 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). Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. SDS of cas: 653-92-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary