Category: pyridine-derivatives

In 2019,Journal of Heterocyclic Chemistry included an article by Heppell, Jacob T.; Islam, Amirul Md.; McAlpine, Shelli R.; Al-Rawi, Jasim M. A.. Synthetic Route of C5H6BNO2. The article was titled 《Functionalization of Quinazolin-4-ones Part 3: Synthesis, Structures Elucidation, DNA-PK, PI3K, and Cytotoxicity of Novel 8-Aryl-2-morpholino-quinazolin-4-ones》. The information in the text is summarized as follows:

A series of novel 8-aryl-2-morpholino quinazolines I (X = H, Cl; Ar = C6H5, 4-ClC6H4, 3-pyridyl, etc.) and II (X = H, Cl; R1 = Me, Bn; Ar = C6H5, 4-MeOC6H4, 3-H2NC6H4, etc.) were synthesized from the precursor 2-thioxo quinazolin-4-one. The compounds I and II were assayed for DNA-dependent protein kinase (DNA-PK) and phosphatidylinositol 3-kinase (PI3K). All compounds showed low DNA-PK % inhibition activity at 10 μM compound concertation, and the compound I (X = H; Ar = dibenzo[b,d]thiophen-4-yl) was most active with 38% inhibition. Similar pattern of PI3K α, β, γ, and δ isoforms inhibition activity at 10 μM were observed and the most active isoform was PI3K δ of 41% inhibition for compound I (X = Cl; Ar = dibenzo[b,d]thiophen-4-yl). Most compounds were less active than expected in spite of the strong structural resemblance to known inhibitors. Loss of activity could be attributed to the tautomerization to the aromatic enol (4-OH), which could specify that the carbonyl (C=O) group is important functional group for the activity. Selected compounds displayed appreciable cytotoxicity and compound I (X = Cl; Ar = dibenzo[b,d]thiophen-4-yl) exhibiting the greatest activity with an IC50 of 9.95 μM, therefore, the mechanism of the cytotoxicity of this compd, were not through DNA-PK or PI3K inhibition activity. The experimental part of the paper was very detailed, including the reaction process of Pyridin-3-ylboronic acid(cas: 1692-25-7Synthetic Route of C5H6BNO2)

Pyridin-3-ylboronic acid(cas: 1692-25-7) belongs to pyridine. In industry and in the lab, pyridine is used as a reaction solvent, particularly when its basicity is useful, and as a starting material for synthesizing some herbicides, fungicides, and antiseptics.Synthetic Route of C5H6BNO2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Kim, Jun Ki; Lim, Hwan Jung; Jeong, Kyung Chae; Park, Seong Jun published 《One-pot sequential synthesis of tetrasubstituted thiophenes via sulfur ylide-like intermediates》.Beilstein Journal of Organic Chemistry published the findings.HPLC of Formula: 31106-82-8 The information in the text is summarized as follows:

A novel approach for the practical synthesis of tetrasubstituted thiophenes was developed. The mechanism for this reaction was based on the formation of a sulfur ylide-like intermediate. It was clearly suggested by (i) the intramol. cyclization of ketene N,S-acetals to the corresponding thiophenes, (ii) 1H NMR studies of Meldrum’s acid-substituted aminothioacetals and (iii) substitution studies of the methoxy group on Meldrum’s acid containing N,S-acetals. Notably, in terms of structural effects on the reactivity and stability of sulfur ylide-like intermediates, 2-pyridyl substituted compound exhibited superior properties over those of others. In the experiment, the researchers used 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8HPLC of Formula: 31106-82-8)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. HPLC of Formula: 31106-82-8

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Ding, Shi; Dai, Rui-Yang; Wang, Wen-Ke; Cao, Qiao; Lan, Le-Fu; Zhou, Xian-Li; Yang, Yu-She published 《Design, synthesis and structure-activity relationship evaluation of novel LpxC inhibitors as Gram-negative antibacterial agents》.Bioorganic & Medicinal Chemistry Letters published the findings.SDS of cas: 29682-15-3 The information in the text is summarized as follows:

LpxC inhibitors are new-type antibacterial agents developed in the last twenty years, mainly against Gram-neg. bacteria infections. To develop novel LpxC inhibitors with good antibacterial activities and biol. metabolism, the authors summarized the basic skeleton of reported LpxC inhibitors, designed and synthesized several series of compounds and tested their antibacterial activities against Escherichia coli and Pseudomonas aeruginosa in vitro. Structure-activity relations are discussed. The metabolism stability of YDL-2, YDL-5, YDL-8, YDL-14, YDL-20-YDL-23 were evaluated in liver microsomes, which indicated that the 2-amino iso-Pr group may be a preferred structure than the 2-hydroxy Et group in the design of LpxC inhibitors. In addition to this study using Methyl 5-bromopicolinate, there are many other studies that have used Methyl 5-bromopicolinate(cas: 29682-15-3SDS of cas: 29682-15-3) was used in this study.

Methyl 5-bromopicolinate(cas: 29682-15-3) belongs to pyridine. Pyridine is widely used in the precursor to agrochemicals and pharmaceuticals. Also, it is used as an important reagent and organic solvent.SDS of cas: 29682-15-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Name: Pyridin-3-ylboronic acidIn 2020 ,《Novel, Potent, and Druglike Tetrahydroquinazoline Inhibitor That Is Highly Selective for Human Topoisomerase II α over β》 was published in Journal of Medicinal Chemistry. The article was written by Ortega, Jose Antonio; Arencibia, Jose M.; Minniti, Elirosa; Byl, Jo Ann W.; Franco-Ulloa, Sebastian; Borgogno, Marco; Genna, Vito; Summa, Maria; Bertozzi, Sine Mandrup; Bertorelli, Rosalia; Armirotti, Andrea; Minarini, Anna; Sissi, Claudia; Osheroff, Neil; De Vivo, Marco. The article contains the following contents:

We disclose a novel class of 6-amino-tetrahydroquinazoline derivatives that inhibit human topoisomerase II (topoII), a validated target of anticancer drugs. In contrast to topoII-targeted drugs currently in clin. use, these compounds do not act as topoII poisons that enhance enzyme-mediated DNA cleavage, a mechanism that is linked to the development of secondary leukemias. Instead, these tetrahydroquinazolines block the topoII function with no evidence of DNA intercalation. We identified a potent lead compound [compound I (ARN-21934) IC50 = 2μM for inhibition of DNA relaxation, as compared to an IC50 = 120μM for the anticancer drug etoposide] with excellent metabolic stability and solubility This new compound also shows ∼100-fold selectivity for topoIIα over topoβ, a broad antiproliferative activity toward cultured human cancer cells, a favorable in vivo pharmacokinetic profile, and the ability to penetrate the blood-brain barrier. Thus, ARN-21934 is a highly promising lead for the development of novel and potentially safer topoII-targeted anticancer drugs. The experimental part of the paper was very detailed, including the reaction process of Pyridin-3-ylboronic acid(cas: 1692-25-7Name: Pyridin-3-ylboronic acid)

Pyridin-3-ylboronic acid(cas: 1692-25-7) belongs to pyridine. Pyridines, quinolines, and isoquinolines have found a function in almost all aspects of organic chemistry. Pyridine has found use as a solvent, base, ligand, functional group, and molecular scaffold. As structural elements, these moieties are potent electron-deficient groups, metal-directing functionalities, fluorophores, and medicinally important pharmacophores. Name: Pyridin-3-ylboronic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Name: 2-(2-Hydroxyethyl)pyridineIn 2018 ,《Anion-Radical Salts of 7,7,8,8-Tetracyanoquinodimethane with Cations in the Basis of Alkylolpyridines》 was published in Russian Journal of General Chemistry. The article was written by Starodub, T. N.. The article contains the following contents:

Anion-radical salts of 7,7,8,8-tetracyanoquinodimethane with cations on the basis of methylol- and ethylolpyridines, N-methyl- and N-Et alkylolpyridines, were synthesized. Their composition is determined by the method of electronic spectroscopy, and the thermal stability is studied. The nature of the salts is investigated by the method of IR spectroscopy: it is shown that the conducting properties depend both on the nature of the alkyl group and on the position of the alkylol substituent. The presence of hydroxy groups in the conducting anion-radical salts allow their application as electronic organic materials for the design of conducting film coatings. The experimental part of the paper was very detailed, including the reaction process of 2-(2-Hydroxyethyl)pyridine(cas: 103-74-2Name: 2-(2-Hydroxyethyl)pyridine)

2-(2-Hydroxyethyl)pyridine(cas: 103-74-2) belongs to pyridine. Pyridines, quinolines, and isoquinolines have found a function in almost all aspects of organic chemistry. Pyridine has found use as a solvent, base, ligand, functional group, and molecular scaffold. As structural elements, these moieties are potent electron-deficient groups, metal-directing functionalities, fluorophores, and medicinally important pharmacophores. Name: 2-(2-Hydroxyethyl)pyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of C6H7Br2NIn 2018 ,《Catalytic Synthesis of Indolines by Hydrogen Atom Transfer to Cobalt(III)-Carbene Radicals》 was published in Chemistry – A European Journal. The article was written by Karns, Alexander S.; Goswami, Monalisa; de Bruin, Bas. The article contains the following contents:

A new method was reported for the synthesis of tert-butyl-2-arylindoline-1-carboxylates such as I [R = Ph, 4-MeOC6H4, 2-pyridyl, etc.; R1 = H, 4-Me, 5-MeO, 5-CF3] from ring-closing reaction of o-aminoarylidine-N-tosylhydrazones II proceeded through cobalt(III)-carbene radical intermediate via rapid intramol. 1,5-hydrogen atom transfer (1,5-HAT). This methodol. employed the use of inexpensive com. available reagents and allowed the transformation of easily derivatized benzaldehyde-derived precursors to functionalized indoline products via formation of compounds II. This transformation was the first reported example of the synthesis of nitrogen-containing heterocycles from cobalt(III)-carbene radical precursors. Computational investigations using d. functional theory identified remarkably low barriers for 1,5-HAT and subsequent radical rebound displacement, hence provided support for the proposed mechanism. Furthermore, the steric and electronic effects of substituents on aniline ring and on nitrogen atom were evaluated and highlighted the importance of adequate resonance stabilization of radical intermediates to the success of this transformation. In the experiment, the researchers used many compounds, for example, 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Synthetic Route of C6H7Br2N)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridines, quinolines, and isoquinolines have found a function in almost all aspects of organic chemistry. Pyridine has found use as a solvent, base, ligand, functional group, and molecular scaffold. As structural elements, these moieties are potent electron-deficient groups, metal-directing functionalities, fluorophores, and medicinally important pharmacophores. Synthetic Route of C6H7Br2N

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of C5H6BNO2In 2020 ,《Organoboron-Functionalization Enables the Hierarchical Assembly of Giant Polyoxometalate Nanocapsules》 was published in Angewandte Chemie, International Edition. The article was written by Li, Shujun; Zhou, Yanfang; Ma, Nana; Zhang, Jie; Zheng, Zhiping; Streb, Carsten; Chen, Xuenian. The article contains the following contents:

The aggregation of mol. metal oxides into larger superstructures can bridge the gap between mol. compounds and solid-state materials. Here, we report that functionalization of polyoxotungstates with organo-boron substituents leads to giant polyoxometalate-based nanocapsules with dimensions of up to 4 nm. A “”lock and key”” mechanism enables the site-specific anchoring of aromatic organo-boronic acids to metal-functionalized Dawson anions [M3P2W15O62]9- (M = TaV or NbV), resulting in unique nanocapsules containing up to twelve POM units. Exptl. and theor. studies provide initial insights into the role of the organo-boron moieties and the metal-functionalized POMs for the assembly of the giant aggregates. The study therefore lays the foundations for the design of organo-POM-based functional nanostructures. In the experiment, the researchers used Pyridin-3-ylboronic acid(cas: 1692-25-7Electric Literature of C5H6BNO2)

Pyridin-3-ylboronic acid(cas: 1692-25-7) belongs to pyridine. Pyridines, quinolines, and isoquinolines have found a function in almost all aspects of organic chemistry. Pyridine has found use as a solvent, base, ligand, functional group, and molecular scaffold. As structural elements, these moieties are potent electron-deficient groups, metal-directing functionalities, fluorophores, and medicinally important pharmacophores. Electric Literature of C5H6BNO2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application In Synthesis of Bis(pyridin-2-ylmethyl)amineIn 2021 ,《Electrochemical Sensing of Adenosin Triphosphate by Specific Binding to Dipicolylamine Group in Cyclodextrin Supramolecular Complex》 was published in ACS Applied Bio Materials. The article was written by Casulli, Maria Antonietta; Taurino, Irene; Hashimoto, Takeshi; Carrara, Sandro; Hayashita, Takashi. The article contains the following contents:

Electrochem. detection based on cyclodextrin supramol. complexes is founded on the competitive binding between electroactive probes and target mols. This limits their versatility to be used for sensing a broad range of metabolites. In this work, we demonstrate the significant role of zinc ions as well as of β-cyclodextrins modified with dipicolylamine and of a phenylboronic acid-modified ferrocene probe to address a selective electrochem. detection of ATP (ATP). Our findings will definitively have an impact in oncol. point-of-care systems, since a high level of extracellular ATP reveals the inflammatory response due to chemotherapeutic treatments. The experimental part of the paper was very detailed, including the reaction process of Bis(pyridin-2-ylmethyl)amine(cas: 1539-42-0Application In Synthesis of Bis(pyridin-2-ylmethyl)amine)

Bis(pyridin-2-ylmethyl)amine(cas: 1539-42-0) is a secondary amine with two picolyl substituents. The compound is a tridentate ligand in coordination chemistry and commonly used to produce Zn-based chemosensors/probes, such as Zinpry.Application In Synthesis of Bis(pyridin-2-ylmethyl)amine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Recommanded Product: 141-86-6In 2020 ,《Supramolecular triblock copolymers through the formation of hydrogen bonds: synthesis, characterization, association effects in solvents of different polarity》 was published in Polymers (Basel, Switzerland). The article was written by Bitsi, Spyridoula-Lida; Droulia, Margarita; Pitsikalis, Marinos. The article contains the following contents:

Anionic polymerization techniques were employed for the synthesis of linear polystyrene (PS) and block copolymer of PS and polyisoprene (PI) PS-b-PI bearing end hydroxyl groups. Following suitable organic chem. transformation, the -OH end groups were converted to moieties able to form complementary hydrogen bonds including 2,6-diaminopurine (Dap), thymine (Thy), and the so-called Hamilton receptor, (Ham). The formation of hydrogen bonds was examined between the polymers PS-Dap and PS-b-PI-Thy, along with the polymers PS-Ham and PS-b-PI-Thy. The conditions under which supramol. triblock copolymers are formed and the possibility to form aggregates were examined both in solution and in the solid state using a variety of techniques such as 1H-NMR spectroscopy, size exclusion chromatog., dilute solution viscometry, dynamic light scattering, thermogravimetric anal., differential thermogravimetry, and differential scanning calorimetry. In addition to this study using 2,6-Diaminopyridine, there are many other studies that have used 2,6-Diaminopyridine(cas: 141-86-6Recommanded Product: 141-86-6) was used in this study.

2,6-Diaminopyridine(cas: 141-86-6) belongs to pyridine. Pyridine and its simple derivatives are stable and relatively unreactive liquids, with strong penetrating odours that are unpleasant.Recommanded Product: 141-86-6

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Name: Pyridin-3-ylboronic acidIn 2019 ,《A Mild and Direct Site-Selective sp2 C-H Silylation of (Poly)Azines》 was published in Journal of the American Chemical Society. The article was written by Gu, Yiting; Shen, Yangyang; Zarate, Cayetana; Martin, Ruben. The article contains the following contents:

A base-mediated protocol that allows for the site-selective sp2 C-H silylation of pyridines, pyrazines, pyridazines, pyrimidines and quinolines by Et3SiBpin is described. The substitution typically proceeds in 4- or 2-position of the pyridine ring. This method is distinguished by its mild conditions, simplicity and excellent site-selective modulation for a diverse set of azines, even in the context of late-stage functionalization, while exhibiting orthogonal reactivity with classical silylation reactions.Pyridin-3-ylboronic acid(cas: 1692-25-7Name: Pyridin-3-ylboronic acid) was used in this study.

Pyridin-3-ylboronic acid(cas: 1692-25-7) belongs to pyridine. Pyridines, quinolines, and isoquinolines have found a function in almost all aspects of organic chemistry. Pyridine has found use as a solvent, base, ligand, functional group, and molecular scaffold. As structural elements, these moieties are potent electron-deficient groups, metal-directing functionalities, fluorophores, and medicinally important pharmacophores. Name: Pyridin-3-ylboronic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem