Category: pyridine-derivatives

Bandarage, Upul K.; Aronov, Alex M.; Cao, Jingrong; Come, Jon H.; Cottrell, Kevin M.; Davies, Robert J.; Giroux, Simon; Jacobs, Marc; Mahajan, Sudipta; Messersmith, David; Moody, Cameron S.; Swett, Rebecca; Xu, Jinwang published their research in ACS Medicinal Chemistry Letters in 2021. The article was titled 《Discovery of a Novel Series of Potent and Selective Alkynylthiazole-Derived PI3Kγ Inhibitors》.Electric Literature of C7H5N The article contains the following contents:

Phosphoinositide 3-kinases (PI3Ks) are a family of enzymes that control a wide variety of cellular functions such as cell growth, proliferation, differentiation, motility, survival, and intracellular trafficking. PI3Kγ plays a critical role in mediating leukocyte chemotaxis as well as mast cell degranulation, making it a potentially interesting target for autoimmune and inflammatory diseases. We previously disclosed a novel series of PI3Kγ inhibitors derived from a benzothiazole core. The truncation of the benzothiazole core led to the discovery of a structurally diverse alkynyl thiazole series which displayed high PI3Kγ potency and subtype selectivity. Further medicinal chem. optimization of the alkynyl thiazole series led to identification of compounds such as 14 and 32, highly potent, subtype selective, and CNS penetrant PI3Kγ inhibitors. Compound 14 showed robust inhibition of PI3Kγ mediated neutrophil migration in vivo. In the part of experimental materials, we found many familiar compounds, such as 4-Ethynylpyridine(cas: 2510-22-7Electric Literature of C7H5N)

4-Ethynylpyridine(cas: 2510-22-7) 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.Electric Literature of C7H5N

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Favalli, Nicholas; Bassi, Gabriele; Bianchi, Davide; Scheuermann, Jorg; Neri, Dario published their research in Bioorganic & Medicinal Chemistry in 2021. The article was titled 《Large screening of DNA-compatible reaction conditions for Suzuki and Sonogashira cross-coupling reactions and for reverse amide bond formation》.HPLC of Formula: 2510-22-7 The article contains the following contents:

Progress in DNA-encoded chem. library synthesis and screening crucially relies on the availability of DNA-compatible reactions, which proceed with high yields and excellent purity for a large number of possible building blocks. In the past, exptl. conditions have been presented for the execution of Suzuki and Sonogashira cross-coupling reactions on-DNA. In this article, our aim was to optimize Suzuki and Sonogashira reactions, comparing our results to previously published procedures. We have tested the performance of improved conditions using 606 building blocks (including boronic acids, pinacol boranes and terminal alkynes), achieving >70% conversion for 84% of the tested mols. Moreover, we describe efficient exptl. conditions for the on-DNA synthesis of amide bonds, starting from DNA derivatives carrying a carboxylic acid moiety and 300 primary, secondary and aromatic amines, as amide bonds are frequently found in DNA-encoded chem. libraries thanks to their excellent DNA compatibility.4-Ethynylpyridine(cas: 2510-22-7HPLC of Formula: 2510-22-7) was used in this study.

4-Ethynylpyridine(cas: 2510-22-7) 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.HPLC of Formula: 2510-22-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Design, synthesis and anticancer properties of isocombretapyridines as potent colchicine binding site inhibitors》 was written by Shuai, Wen; Li, Xinnan; Li, Wenlong; Xu, Feijie; Lu, Lixue; Yao, Hong; Yang, Limei; Zhu, Huajian; Xu, Shengtao; Zhu, Zheying; Xu, Jinyi. HPLC of Formula: 1122-54-9 And the article was included in European Journal of Medicinal Chemistry in 2020. The article conveys some information:

A series of novel isocombretapyridines were designed and synthesized based on a lead compound isocombretastatin A-4 (isoCA-4) by replacing 3,4,5-trimethoxylphenyl with substituent pyridine nucleus. The MTT assay results showed that compound I possessed the most potent activities against all tested cell lines with IC50 values at nanomolar concentration ranges. Moreover, I inhibited tubulin polymerization at a micromolar level and also displayed potent anti-vascular activity in vitro. Further mechanistic studies were conducted to demonstrate that compound I could bind to the colchicine site of tubulin,and disrupte the cell microtubule networks, induce G2/M phase arrest, promote apoptosis and depolarize mitochondria of K562 cells in a dose-dependent manner. Notably, I exhibited more potent tumor growth inhibition activity with 68.7% tumor growth inhibition than that of isoCA-4 in H22 allograft mouse model without apparent toxicity. The present results suggested that compound I may serve as a promising potent microtubule-destabilizing agent candidate for the development of therapeutics to treat cancer. In the experiment, the researchers used 4-Acetylpyridine(cas: 1122-54-9HPLC of Formula: 1122-54-9)

4-Acetylpyridine(cas: 1122-54-9) 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.HPLC of Formula: 1122-54-9

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2015,Kobayashi, Toshiki; Furusawa, Yuki; Yamada, Shoya; Akehi, Masaru; Takenaka, Fumiaki; Sasaki, Takanori; Akahoshi, Akiya; Hanada, Takahisa; Matsuura, Eiji; Hirano, Hiroyuki; Tai, Akihiro; Kakuta, Hiroki published 《Positron Emission Tomography to Elucidate Pharmacokinetic Differences of Regioisomeric Retinoid X Receptor Agonists》.ACS Medicinal Chemistry Letters published the findings.Safety of 5-Bromo-2-chloropyridine The information in the text is summarized as follows:

RXR partial agonist NEt-4IB (2a, 6-[ethyl-(4-isobutoxy-3-isopropylphenyl)amino]pyridine-3-carboxylic acid: EC50 = 169 nM, Emax = 55%) showed a blood concentration higher than its Emax after single oral administration at 30 mg/kg to mice, and repeated oral administration at 10 mg/kg/day to KK-Ay mice afforded antitype 2 diabetes activity without the side effects caused by RXR full agonists. However, RXR full agonist NEt-3IB (1a), in which the isobutoxy and iso-Pr groups of 2a are interchanged, gave a much lower blood concentration than 2a. Here we used positron emission tomog. (PET) with tracers [11C]1a, [11C]2a and fluorinated derivatives [18F]1b, [18F]2b, which have longer half-lives, to examine the reason why 1a and 2a exhibited significantly different blood concentrations As a result, the reason for the high blood concentration of 2a after oral administration was found to be linked to higher intestinal absorbability together with lower biliary excretion, compared with 1a. The experimental part of the paper was very detailed, including the reaction process of 5-Bromo-2-chloropyridine(cas: 53939-30-3Safety of 5-Bromo-2-chloropyridine)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. Pyridine derivatives lend themselves to many roles in the spirited field of supramolecular chemistry – whether as the ligand backbone of metal-organic polymers or presiding over the key electronic stations of nanodevices. In biochemistry, pyridine-containing cofactors are necessary nutrients on which our lives depend. Safety of 5-Bromo-2-chloropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2015,Maity, Pintu; Kundu, Debasish; Ranu, Brindaban C. published 《Visible-Light-Photocatalyzed Metal-Free C-H Heteroarylation of Heteroarenes at Room Temperature: A Sustainable Synthesis of Biheteroaryls》.European Journal of Organic Chemistry published the findings.Application In Synthesis of 6-Bromopyridin-3-amine The information in the text is summarized as follows:

An efficient C-H heteroarylation of heteroarenes is achieved through visible-light photoredox-catalyzed diazotization of heteroarylamines in situ by tBuONO at room temperature A library of functionalized biheteroaryls is obtained by using this protocol. The reaction avoids the use of transition-metal catalysts, additives, and acidic reaction medium. In addition to this study using 6-Bromopyridin-3-amine, there are many other studies that have used 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. Amines can be classified according to the nature and number of substituents on nitrogen. Aliphatic amines contain only H and alkyl substituents. Aromatic amines have the nitrogen atom connected to an aromatic ring.Important amines include amino acids, biogenic amines, trimethylamine, and aniline. Inorganic derivatives of ammonia are also called amines, such as monochloramine (NClH2).Application In Synthesis of 6-Bromopyridin-3-amine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2014,Flanagan, Jack U.; Atwell, Graham J.; Heinrich, Daniel M.; Brooke, Darby G.; Silva, Shevan; Rigoreau, Laurent J. M.; Trivier, Elisabeth; Turnbull, Andrew P.; Raynham, Tony; Jamieson, Stephen M. F.; Denny, William A. published 《Morpholylureas as a new class of potent and selective inhibitors of the type 5 17-β-hydroxysteroid dehydrogenase (AKR1C3)》.Bioorganic & Medicinal Chemistry published the findings.Computed Properties of C5H3BrClN The information in the text is summarized as follows:

Inhibitors of the aldo-keto reductase enzyme AKR1C3 are of interest as potential drugs for leukemia and hormone-related cancers. A series of non-carboxylate morpholino(phenylpiperazin-1-yl)methanones were prepared by palladium-catalyzed coupling of substituted Ph or pyridyl bromides with the known morpholino(piperazin-1-yl)methanone, and shown to be potent (IC50 ∼ 100 nM) and very isoform-selective inhibitors of AKR1C3. Lipophilic electron-withdrawing substituents on the Ph ring were pos. for activity, as was an H-bond acceptor on the other terminal ring, and the ketone moiety (as a urea) was essential. These structure-activity relationships are consistent with an X-ray structure of a representative compound bound in the AKR1C3 active site, which showed H-bonding between the carbonyl oxygen of the drug and Tyr55 and His117 in the ‘oxyanion hole’ of the enzyme, with the piperazine bridging unit providing the correct twist to allow the terminal benzene ring to occupy the lipophilic pocket and align with Phe311.5-Bromo-2-chloropyridine(cas: 53939-30-3Computed Properties of C5H3BrClN) was used in this study.

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. When pyridine is adsorbed on oxide surfaces or in porous materials, the following species are commonly observed: (i) pyridine coordinated to Lewis acid sites, (ii) pyridine H-bonded to weakly acidic hydroxyls, and (iii) protonated pyridine. At high coverage, physisorbed pyridine and protonated dimers can also be observed.Computed Properties of C5H3BrClN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2013,Zhang, Yuanyuan; Yang, Weiqing; Xu, Keping; Ma, Menglin; Wang, Yuliang published 《Synthesis and antibacterial activities of pleuromutilin derivatives containing aryl urea groups》.Letters in Drug Design & Discovery published the findings.Safety of 6-Bromopyridin-3-amine The information in the text is summarized as follows:

A series of novel pleuromutilin derivatives containing aryl urea groups was synthesized and their antibacterial activity was evaluated in vitro against Staphylococcus aureus ATCC 26113, Staphylococcus aureus SC, Staphylococcus albus ATCC 8799 and Pseudomonas aeruginosa ATCC 27853. Most of compounds exhibited more potent activities than reference drug Tiamulin against Staphylococcus aureus ATCC 26113 and Saphylococcus aureus SC. Several compounds containing a pyridine urea group and a compound with a quinoline urea group showed excellent activity with the MIC value less than 0.001 μg/mL against Staphylococcus aureus SC. The title compounds thus formed included a thioether urea pyridine derivative (I) and related substances. The synthesis of the target compounds was achieved by a reaction of 2-[(2-amino-1,1-dimethylethyl)thio]acetic acid 6-ethenyldecahydro-5-hydroxy-4,6,9,10-tetramethyl-1-oxo-3a,9-propano-3aH-cyclopentacycloocten-8-yl ester with 2,2,2-trichloro-N-phenylacetamide derivatives and analogs. In the experiment, the researchers used 6-Bromopyridin-3-amine(cas: 13534-97-9Safety of 6-Bromopyridin-3-amine)

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.Safety of 6-Bromopyridin-3-amine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Tripathi, Suparna; Hossain, Anowar; Seth, Saikat Kumar; Mukhopadhyay, Subrata published an article on February 15 ,2021. The article was titled 《Supramolecular association and quantification of intermolecular interactions of 4′-functionalized 2,2′:6′,2”-terpyridines: Experimental observation and theoretical studies》, and you may find the article in Journal of Molecular Structure.Synthetic Route of C20H14N4 The information in the text is summarized as follows:

Three versatile 4′-substituted 2,2′:6′,2”-terpyridine compounds (1-3) having different substitutions (4-ethoxyphenyl, 4-methoxyphenyl and pyridyl) at 4′-position of the central pyridine ring have been synthesized and structurally characterized. Three representative crystal structures have been determined through single crystal X-ray diffraction anal. X-ray crystallog. revels that the structures are stabilized through C-H···π and π-π stacking interactions. In the solid-state, the supramol. assemblies of the title compounds have been explored in detail. Compounds (1) and (3) exhibits both C-H···π and π-π interactions in building supramol. assemblies whereas compound (2) exhibit π-π interaction only. All the intermol. interactions that are involved within the structures are quantified through Hirshfeld surface analyses. The weak noncovalent interactions that played significant role in building supramol. assemblies are further characterized by Bader’s theory of ‘atoms-in-mols.’ (AIM). Finally, the supramol. networks are characterized by theor. ‘Noncovalent Interaction’ (NCI) plot index. The supramol. solid-state frameworks of three 4′-functionalized 2,2′:6′,2”-terpyridine derivatives have been quantified which are further characterized theor. by the Bader’s theory of ‘atoms-in-mols.'(AIM) and ‘noncovalent interaction’ (NCI) plot index. In the part of experimental materials, we found many familiar compounds, such as 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Synthetic Route of C20H14N4)

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. Synthetic Route of C20H14N4 Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kirilov, Plamen; Matondo, Hubert; Vicendo, Patricia; Garrigues, Jean-Christophe; Baboulene, Michel; Nguyen, Hoang-Phuong; Rico-Lattes, Isabelle published an article on February 28 ,2006. The article was titled 《Synthesis and photophysical properties of novel amphiphilic ruthenium(II) complexes containing 4,4′-dialkyl-aminomethyl-2,2′-bipyridyl ligands》, and you may find the article in Applied Organometallic Chemistry.HPLC of Formula: 138219-98-4 The information in the text is summarized as follows:

The synthesis of new 2,2′-bipyridine ligands (L = 4,4′-dialkyl-aminomethyl-2,2′-bipyridine; alkyl = octyl, dodecyl, octadodecyl) functionalized with bulky amino side groups is reported. Three homoleptic polypyridyl ruthenium(II) complexes [Ru(L)3]2+(PF6-)2 have been synthesized. These compounds were characterized and their photophys. properties examined The electronic spectra of three complexes show pyridyl π → π* transitions in the UV region and metal-to-ligand charge transfer bands in the visible region. In the experiment, the researchers used 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4HPLC of Formula: 138219-98-4)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) 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. HPLC of Formula: 138219-98-4The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Duan, Yu-Hao; Zhu, Xiao-Zhao; Zhang, Qian; Yang, Yang published an article in Inorganic Chemistry Communications. The title of the article was 《Molecular enantiopure homometallic Zn14L24 cubic cages with luminescence properties》.Product Details of 1214363-66-2 The author mentioned the following in the article:

Chiral homometallic high-nuclearity cages are rare and of synthetic challenge. Herein, the authors report the syntheses and structures of a pair of enantiopure homometallic high-nuclearity [Zn14L24]28+ cages. The mol. cage has a cubic framework with pseudo-O symmetry and encloses a large void inside. The chirality of the framework is directed by the point chirality of the chiral amine applied, which is verified by the crystal structure and CD studies. The formation processes are probed by NMR and CD studies. The cage complexes also possess blue luminescence properties. They represent the first enantiopure homometallic cubic cages and rare examples of high-nuclearity enantiopure cages. In the experimental materials used by the author, we found [3,4′-Bipyridine]-6-carboxylic acid(cas: 1214363-66-2Product Details of 1214363-66-2)

[3,4′-Bipyridine]-6-carboxylic acid(cas: 1214363-66-2) belongs to pyridine derivatives. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals. Product Details of 1214363-66-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem