Pyridine-derivatives

Electric Literature of C6H8N2On June 11, 2020, Wang, Chunting; Pei, Yameng; Wang, Lin; Li, Shuo; Jiang, Chao; Tan, Xu; Dong, Yi; Xiang, Ye; Ma, Yao; Liu, Gang published an article in Journal of Medicinal Chemistry. The article was 《Discovery of (1H-Pyrazolo[3,4-c]pyridin-5-yl)sulfonamide Analogues as Hepatitis B Virus Capsid Assembly Modulators by Conformation Constraint》. The article mentions the following:

Hepatitis B virus (HBV) capsid assembly modulators (CAMs) have been suggested to be effective anti-HBV agents in both preclin. and clin. studies. In addition to blocking HBV replication, CAMs could reduce the formation of covalently closed circular DNA (cccDNA), which accounts for the persistence of HBV infection. Here, we describe the discovery of (1H-indazole-5-yl)sulfonamides and (1H-pyrazolo[3,4-c]pyridin-5-yl)sulfonamides as new CAM chemotypes by constraining the conformation of the sulfamoylbenzamide derivatives Lead optimization resulted in compound 56 with an EC50 value of 0.034μM and good metabolic stability in mouse liver microsomes. To increase the solubility, the amino acid prodrug (65) and its citric acid salt (67) were prepared Compound 67 dose dependently inhibited HBV replication in a hydrodynamic injection-based mouse model of HBV infection, while 56 did not show in vivo anti-HBV activity, likely owing to its suboptimal solubility This class of compounds may serve as a starting point to develop novel anti-HBV drugs. In addition to this study using 4-Amino-2-picoline, there are many other studies that have used 4-Amino-2-picoline(cas: 18437-58-6Electric Literature of C6H8N2) was used in this study.

4-Amino-2-picoline(cas: 18437-58-6) belongs to anime. Many important products require amines as part of their syntheses. Methylamine is utilized in the production of the analgesic meperidine (trade name Demerol) and the photographic developer Metol (trademark), and dimethylamine is used in the synthesis of the antihistamine diphenhydramine (trade name Benadryl), the solvent dimethylformamide (DMF), and the rocket propellant 1,1-dimethylhydrazine. The synthesis of the insect repellent N,N-diethyl-m-toluamide (DEET) incorporates diethylamine while that of the synthetic fibre Kevlar requires aromatic amines.Electric Literature of C6H8N2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Name: 2-(Chloromethyl)-4-methoxypyridine hydrochlorideOn March 20, 1992, Kohl, Bernhard; Sturm, Ernst; Senn-Bilfinger, Joerg; Simon, W. Alexander; Krueger, Uwe; Schaefer, Hartmann; Rainer, Georg; Figala, Volker; Klemm, Kurt published an article in Journal of Medicinal Chemistry. The article was 《(H+, K+)-ATPase inhibiting 2-[(2-pyridylmethyl)sulfinyl]benzimidazoles. 4. A novel series of dimethoxypyridyl-substituted inhibitors with enhanced selectivity. The selection of pantoprazole as a clinical candidate》. The article mentions the following:

[(Pyridylmethyl)sulfinyl]benzimidazoles I (R = OCF2H, OCH2CF3, OCF2CF2H; R1 = H, OMe; RR1 = OCF2O; R2, R3 = H, Me, OMe) were prepared and tested for (H+,K+)-ATPase inhibitory activity. The aim of this study was to identify compounds with high (H+,K+)-ATPase inhibitory activity in stimulated gastric glands possessing acidic pH, but low reactivity (high chem. stability) at neutral pH as reflected by in vitro (Na+,K+)-ATPase inhibitory activity. The critical influence of substituents flanking the pyridine 4-MeO substituent present in all derivatives was carefully studied. The introduction of a 3-MeO group gave inhibitors possessing a combination of high potency, similar to omeprazole and lansoprazole, but increased stability. As a result I (R = OCF2H, R1 = R3 = H, R2 = OMe; pantoprazole) was selected as a candidate drug and is currently undergoing phase III clin. studies. In the experimental materials used by the author, we found 2-(Chloromethyl)-4-methoxypyridine hydrochloride(cas: 62734-08-1Name: 2-(Chloromethyl)-4-methoxypyridine hydrochloride)

2-(Chloromethyl)-4-methoxypyridine hydrochloride(cas: 62734-08-1) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Name: 2-(Chloromethyl)-4-methoxypyridine hydrochloride

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Wang, Xiaobo; Ma, Yongpeng; Li, Zhenxing; Han, Guanglu; Guan, Xidong; Fan, Kaiqi published an article in Journal of Applied Spectroscopy. The title of the article was 《Colorimetric Detection of Fe(II) and Co(II) by Using Terpyridine-Based Derivative》.Related Products of 112881-51-3 The author mentioned the following in the article:

A multi-ion chromogenic sensor based on a terpyridine moiety was developed for the semiquant., visual, and sensitive speciation anal. of Fe2+ and Co2+ ions in water. Each metal ion exhibited a different color, and significant color evolution was observed by the naked eye, resulting in semiquant. visual detection. A smartphone was used for visual detection by identifying the RGB values of the probe solutions The application of smartphones shortened the detection time dramatically and reduced the detection cost. This method provides a new strategy for the semiquant. detection of heavy metal ions in water samples. In the experiment, the researchers used many compounds, for example, 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Related Products of 112881-51-3)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Related Products of 112881-51-3 Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2015,Di Pompo, Gemma; Salerno, Manuela; Rotili, Dante; Valente, Sergio; Zwergel, Clemens; Avnet, Sofia; Lattanzi, Giovanna; Baldini, Nicola; Mai, Antonello published 《Novel Histone Deacetylase Inhibitors Induce Growth Arrest, Apoptosis, and Differentiation in Sarcoma Cancer Stem Cells》.Journal of Medicinal Chemistry published the findings.Name: 6-Bromopyridin-3-amine The information in the text is summarized as follows:

Musculoskeletal sarcomas are aggressive malignancies of bone and soft tissues often affecting children and adolescents. Histone deacetylase inhibitors (HDACi) have been proposed to counteract cancer stem cells (CSCs) in solid neoplasms. When tested in human osteosarcoma, rhabdomyosarcoma, and Ewing’s sarcoma stem cells, the new HDACi MC1742 I and MC2625 II increased acetyl-H3 and acetyl-tubulin levels and inhibited CSC growth by apoptosis induction. At nontoxic doses, I promoted osteogenic differentiation. Further investigation with I will be done in preclin. sarcoma models.6-Bromopyridin-3-amine(cas: 13534-97-9Name: 6-Bromopyridin-3-amine) was used in this study.

6-Bromopyridin-3-amine(cas: 13534-97-9) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.Name: 6-Bromopyridin-3-amine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2016,Jordan, John B.; Whittington, Douglas A.; Bartberger, Michael D.; Sickmier, E. Allen; Chen, Kui; Cheng, Yuan; Judd, Ted published 《Fragment-Linking Approach Using 19F NMR Spectroscopy To Obtain Highly Potent and Selective Inhibitors of β-Secretase》.Journal of Medicinal Chemistry published the findings.Application In Synthesis of 6-Bromopyridin-3-amine The information in the text is summarized as follows:

Fragment-based drug discovery (FBDD) has become a widely used tool in small-mol. drug discovery efforts. One of the most commonly used biophys. methods in detecting weak binding of fragments is NMR (NMR) spectroscopy. In particular, FBDD performed with 19F NMR-based methods has been shown to provide several advantages over 1H NMR using traditional magnetization-transfer and/or two-dimensional methods. Here, we demonstrate the utility and power of 19F-based fragment screening by detailing the identification of a second-site fragment through 19F NMR screening that binds to a specific pocket of the aspartic acid protease, β-secretase (BACE-1). The identification of this second-site fragment allowed the undertaking of a fragment-linking approach, which ultimately yielded a mol. exhibiting a more than 360-fold increase in potency while maintaining reasonable ligand efficiency and gaining much improved selectivity over cathepsin-D (CatD). X-ray crystallog. studies of the mols. demonstrated that the linked fragments exhibited binding modes consistent with those predicted from the targeted screening approach, through-space NMR data, and mol. modeling.6-Bromopyridin-3-amine(cas: 13534-97-9Application In Synthesis of 6-Bromopyridin-3-amine) was used in this study.

6-Bromopyridin-3-amine(cas: 13534-97-9) belongs to anime. The methylamines occur in small amounts in some plants. Many polyfunctional amines (i.e., those having other functional groups in the molecule) occur as alkaloids in plants—for example, mescaline, 2-(3,4,5-trimethoxyphenyl)ethylamine; the cyclic amines nicotine, atropine, morphine, and cocaine; and the quaternary salt choline, N-(2-hydroxyethyl)trimethylammonium chloride, which is present in nerve synapses and in plant and animal cells.Application In Synthesis of 6-Bromopyridin-3-amine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2016,Igawa, Hideyuki; Takahashi, Masashi; Kakegawa, Keiko; Kina, Asato; Ikoma, Minoru; Aida, Jumpei; Yasuma, Tsuneo; Kawata, Yayoi; Ashina, Shuntaro; Yamamoto, Syunsuke; Kundu, Mrinalkanti; Khamrai, Uttam; Hirabayashi, Hideki; Nakayama, Masaharu; Nagisa, Yasutaka; Kasai, Shizuo; Maekawa, Tsuyoshi published 《Correction to Melanin-Concentrating Hormone Receptor 1 Antagonists Lacking an Aliphatic Amine: Synthesis and Structure-Activity Relationships of Novel 1-(Imidazo[1,2-a]pyridin-6-yl)pyridin-2(1H)-one Derivatives [Erratum to document cited in CA164:213881]》.Journal of Medicinal Chemistry published the findings.SDS of cas: 31106-82-8 The information in the text is summarized as follows:

In the body of Table 1, chem. structures for the R group are missing; the structures are provided here. In addition to this study using 2-(Bromomethyl)pyridine hydrobromide, there are many other studies that have used 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8SDS of cas: 31106-82-8) was used in this study.

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridines form stable salts with strong acids. Pyridine itself is often used to neutralize acid formed in a reaction and as a basic solvent. SDS of cas: 31106-82-8

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2017,Faggyas, Reka J.; Calder, Ewen D. D.; Wilson, Claire; Sutherland, Andrew published 《One-Pot Asymmetric Synthesis of Alkylidene 1-Alkylindan-1-ols Using Bronsted Acid and Palladium Catalysis》.Journal of Organic Chemistry published the findings.Electric Literature of C6H4BrNO The information in the text is summarized as follows:

A one-pot catalytic enantioselective allylboration/Mizoroki-Heck reaction of 2-bromoaryl ketones has been developed for the asym. synthesis of 3-methyleneindanes bearing a tertiary alc. center. Bronsted acid-catalyzed allylboration with a chiral BINOL derivative was followed by a palladium-catalyzed Mizoroki-Heck cyclization, resulting in selective formation of the exo-alkene. This novel protocol provides a concise and scalable approach to 1-alkyl-3-methyleneindan-1-ols in high enantiomeric ratios (up to 96:4 er). The potential of these compounds as chiral building blocks was demonstrated with efficient transformation to optically active diol and amino alc. scaffolds. In the experimental materials used by the author, we found 2-Bromonicotinaldehyde(cas: 128071-75-0Electric Literature of C6H4BrNO)

2-Bromonicotinaldehyde(cas: 128071-75-0) 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.Electric Literature of C6H4BrNO

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Yan, Xiao-Wei; Xie, Yong-Rong; Jin, Zhi-Min; Hu, Mao-Lin; Zhou, Liang-Pu published 《Three Arene-Ru(II) compounds of 2-halogen-5-aminopyridine: Synthesis, characterization, and cytotoxicity》.Applied Organometallic Chemistry published the findings.Category: pyridine-derivatives The information in the text is summarized as follows:

Three novel compounds, (η6-p-cymene)RuCl2(2-fluoro-5-aminopyridine) (compound 1), (η6-p-cymene)RuCl2(5-amino-2-chloropyridine) (compound 2) and (η6-p-cymene)RuCl2(2-bromo- 5-aminopyridine) (compound 3), were synthesized and characterized. The structures of compound 1 and 3 were determined by x-ray diffraction, showing a distorted piano-stool type of geometry with similar bond lengths and angles around the Ru. Compound 2 exhibited moderate in vitro activity against A549 and MCF-7 human cancer cells, the other two lower activities. The UV-visible and fluorescent absorption titrations showed that the three compounds bonded with CT-DNA in a minor groove. The intrinsic binding constants (Kb) were calculated to be 2.13(±0.03) × 105 M-1, 2.89(±0.03) × 105 M-1 and 2.45(±0.03) × 105 M-1 for compound 1, 2 and 3, resp., by using UV-visible absorption titrations data. Among the three compound, the highest value of intrinsic binding constant of compound 2 was consistent with its high cytotoxicity against A549 and MCF-7 human cancer cells in vitro. The results came from multiple reactions, including the reaction of 6-Bromopyridin-3-amine(cas: 13534-97-9Category: pyridine-derivatives)

6-Bromopyridin-3-amine(cas: 13534-97-9) belongs to anime. Many important products require amines as part of their syntheses. Methylamine is utilized in the production of the analgesic meperidine (trade name Demerol) and the photographic developer Metol (trademark), and dimethylamine is used in the synthesis of the antihistamine diphenhydramine (trade name Benadryl), the solvent dimethylformamide (DMF), and the rocket propellant 1,1-dimethylhydrazine. The synthesis of the insect repellent N,N-diethyl-m-toluamide (DEET) incorporates diethylamine while that of the synthetic fibre Kevlar requires aromatic amines.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Chemistry – A European Journal included an article by Park, Hyunchang; Ahn, Hye Mi; Jeong, Ha Young; Kim, Cheal; Lee, Dongwhan. Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide. The article was titled 《Non-Heme Iron Catalysts for Olefin Epoxidation: Conformationally Rigid Aryl-Aryl Junction To Support Amine/Imine Multidentate Ligands》. The information in the text is summarized as follows:

Atom-transfer chem. represented an important class of reactions catalyzed by metalloenzymes. As a functional mimic of non-heme iron enzymes that deliver oxygen atoms to olefins, the monoiron complexes supported by new N-donor chelates were designed. These ligands took advantage of heme-like conformational rigidity of the π-conjugated mol. backbone and synthetic flexibility of tethering non-heme donor groups for addnl. steric and electronic control. Iron complexes generated in-situ were used to carry out catalytic epoxidation of a wide range of olefin substrates by using mCPBA as a terminal oxidant. The fate of initial iron-peracid adduct and the involvement of iron-oxo species in this process were investigated further by mechanistic probes and isotope exchange studies. Thet anilidopyridyl-derived [N,N]-bidentate motif served as a versatile structural platform to build non-heme ligands for catalytic oxidation chem. The results came from multiple reactions, including the reaction of 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2019,Journal of Chemical Physics included an article by Sanderson, Stephen; Philippa, Bronson; Vamvounis, George; Burn, Paul L.; White, Ronald D.. Application In Synthesis of fac-Tris(2-phenylpyridine)iridium. The article was titled 《Understanding charge transport in Ir(ppy)3:CBP OLED films》. The information in the text is summarized as follows:

Ir(ppy)3:CBP blends have been widely studied as the emissive layer in organic light emitting diodes (OLEDs), yet crucial questions about charge transport within the layer remain unaddressed. Recent mol. dynamics simulations show that the Ir(ppy)3 mols. are not isolated from each other, but at concentrations of as low as 5 weight % can be part of connected pathways. Such connectivity raises the question of how the iridium(III) complexes contribute to long-range charge transport in the blend. We implement a kinetic Monte Carlo transport model to probe the guest concentration dependence of charge mobility and show that distinct min. appear at approx. 10 weight % Ir(ppy)3 due to an increased number of trap states that can include interconnected complexes within the blend film. The depth of the min. is shown to be dependent on the elec. field and to vary between electrons and holes due to their different trapping depths arising from the different ionization potentials and electron affinities of the guest and host mols. Typical guest-host OLEDs use a guest concentration below 10 weight % to avoid triplet-triplet annihilation, so these results suggest that optimal device performance is achieved when there is significant charge trapping on the iridium(III) complex guest mols. and min. interactions of the emissive chromophores that can lead to triplet-triplet annihilation. (c) 2019 American Institute of Physics. In addition to this study using fac-Tris(2-phenylpyridine)iridium, there are many other studies that have used fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6Application In Synthesis of fac-Tris(2-phenylpyridine)iridium) was used in this study.

fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6) 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. Application In Synthesis of fac-Tris(2-phenylpyridine)iridium

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem