Pyridine-derivatives

In 2010,Gao, Zhaobing; Zhang, Tangzhi; Wu, Meng; Xiong, Qiaojie; Sun, Haiyan; Zhang, Yinan; Zu, Liansuo; Wang, Wei; Li, Min published 《Isoform-specific Prolongation of Kv7 (KCNQ) Potassium Channel Opening Mediated by New Molecular Determinants for Drug-Channel Interactions》.Journal of Biological Chemistry published the findings.Product Details of 13534-97-9 The information in the text is summarized as follows:

Kv7 channels, especially Kv7.2 (KCNQ2) and Kv7.3 (KCNQ3), are key determinants for membrane excitability in the brain. Some chem. modulators of KCNQ channels are in development for use as anti-epileptic drugs, such as retigabine (D-23129, N-(2-amino-4-(4-fluorobenzylamino)-phenyl)), which was recently approved for clin. use. In addition, several other compounds were also reported to potentiate activity of the Kv7 channels. It is therefore of interest to investigate compound-channel interactions, so that more insights may be gained to aid future development of therapeutics. We have conducted a screen of 20,000 compounds for KCNQ2 potentiators using rubidium flux combined with at. absorption spectrometry. Here, we report the characterization of a series of new structures that display isoform specificity and induce a marked reduction of deactivation distinct from that of retigabine. Furthermore, KCNQ2(W236L), a previously reported mutation that abolishes sensitivity to retigabine, remains fully sensitive to these compounds This result, together with mutagenesis and other studies, suggests that the reported compounds confer a unique mode of action and involve new mol. determinants on the channel protein, consistent with the idea of recognizing a new site on channel protein. The results came from multiple reactions, including the reaction of 6-Bromopyridin-3-amine(cas: 13534-97-9Product Details of 13534-97-9)

6-Bromopyridin-3-amine(cas: 13534-97-9) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Product Details of 13534-97-9

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2010,Ghiron, Chiara; Haydar, Simon N.; Aschmies, Suzan; Bothmann, Hendrick; Castaldo, Cristiana; Cocconcelli, Giuseppe; Comery, Thomas A.; Di, Li; Dunlop, John; Lock, Tim; Kramer, Angela; Kowal, Dianne; Jow, Flora; Grauer, Steve; Harrison, Boyd; La Rosa, Salvatore; Maccari, Laura; Marquis, Karen L.; Micco, Iolanda; Nencini, Arianna; Quinn, Joanna; Robichaud, Albert J.; Roncarati, Renza; Scali, Carla; Terstappen, Georg C.; Turlizzi, Elisa; Valacchi, Michela; Varrone, Maurizio; Zanaletti, Riccardo; Zanelli, Ugo published 《Novel Alpha-7 Nicotinic Acetylcholine Receptor Agonists Containing a Urea Moiety: Identification and Characterization of the Potent, Selective, and Orally Efficacious Agonist 1-[6-(4-Fluorophenyl)pyridin-3-yl]-3-(4-piperidin-1-ylbutyl) Urea (SEN34625/WYE-103914)》.Journal of Medicinal Chemistry published the findings.Application In Synthesis of 6-Bromopyridin-3-amine The information in the text is summarized as follows:

Alpha-7 nicotinic acetylcholine receptor (α7 nAChR) agonists are promising therapeutic candidates for the treatment of cognitive impairment. We report a series of novel, potent small mol. agonists (4-18) of the α7 nAChR deriving from our continuing efforts in the areas of Alzheimer’s disease and schizophrenia. One of the compounds of the series containing a urea moiety (16)(I) was further shown to be a selective agonist of the α7 nAChR with excellent in vitro and in vivo profiles, brain penetration, and oral bioavailability and demonstrated in vivo efficacy in multiple behavioral cognition models. Structural modifications leading to the improved selectivity profile and the biol. evaluation of this series of compounds are discussed. 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. 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.Application In Synthesis of 6-Bromopyridin-3-amine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2013,Younis, Yassir; Douelle, Frederic; Gonzalez Cabrera, Diego; Le Manach, Claire; Nchinda, Aloysius T.; Paquet, Tanya; Street, Leslie J.; White, Karen L.; Zabiulla, K. Mohammed; Joseph, Jayan T.; Bashyam, Sridevi; Waterson, David; Witty, Michael J.; Wittlin, Sergio; Charman, Susan A.; Chibale, Kelly published 《Structure-Activity-Relationship Studies around the 2 Amino Group and Pyridine Core of Antimalarial 3,5-Diarylaminopyridines Lead to a Novel Series of Pyrazine Analogues with Oral in Vivo Activity》.Journal of Medicinal Chemistry published the findings.HPLC of Formula: 13534-97-9 The information in the text is summarized as follows:

Replacement of the pyridine core of antimalarial 3,5-diaryl-2-aminopyridines led to the identification of a novel series of pyrazine analogs with potent oral antimalarial activity. However, other changes to the pyridine core and replacement or substitution of the 2-amino group led to loss of antimalarial activity. The 3,5-diaryl-2-aminopyrazine series showed impressive in vitro antiplasmodial activity against the K1 (multidrug resistant) and NF54 (sensitive) strains of Plasmodium falciparum in the nanomolar IC50 range of 6-94 nM while also demonstrating good in vitro metabolic stability in human liver microsomes. In the Plasmodium berghei mouse model, this series generally exhibited good efficacy at low oral doses. One of the frontrunner compounds, (I), displayed potent in vitro antiplasmodial activity with IC50 values of 8.4 and 10 nM against the K1 and NF54 strains, resp. When evaluated in P. berghei-infected mice, compound I was completely curative at an oral dose of 4×10 mg/kg. In the experimental materials used by the author, we found 6-Bromopyridin-3-amine(cas: 13534-97-9HPLC of Formula: 13534-97-9)

6-Bromopyridin-3-amine(cas: 13534-97-9) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.HPLC of Formula: 13534-97-9

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2016,Zhang, Mengjia; Weng, Zhiqiang published 《Copper-Mediated Trifluoromethylthiolation of Heteroaryl Bromides》.Advanced Synthesis & Catalysis published the findings.Related Products of 29682-15-3 The information in the text is summarized as follows:

An efficient protocol for the copper-mediated trifluoromethylthiolation of heteroaryl bromides has been achieved using the copper complex (bpy)Cu(SCF3) as trifluoromethylthiolation reagent. This procedure provides a straightforward synthetic method for heteroaryl trifluoromethyl sulfides from readily available, simple starting materials. The reaction demonstrates a broad substrate scope and tolerates a wide array of functional groups, including nitrile, ester, chloro, nitro, or methoxy substituents. The synthesis of the target compounds was achieved by a reaction of (2,2′-bipyridine-κN1,κN1′)(1,1,1-trifluoromethanethiolato-κS)copper with aryl bromides, such as 2-bromopyridine derivatives, 3-bromopyridine derivatives, 4-bromopyridine derivatives, bromoquinoline derivatives, 2-bromoquinoxaline, 2-bromopyrimidine, 2-bromothiazole derivatives, 6-(bromo)imidazo[1,2-a]pyridine. After reading the article, we found that the author used Methyl 5-bromopicolinate(cas: 29682-15-3Related Products of 29682-15-3)

Methyl 5-bromopicolinate(cas: 29682-15-3) 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. Related Products of 29682-15-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2016,Rabal, Obdulia; Sanchez-Arias, Juan A.; Cuadrado-Tejedor, Mar; de Miguel, Irene; Perez-Gonzalez, Marta; Garcia-Barroso, Carolina; Ugarte, Ana; Estella-Hermoso de Mendoza, Ander; Saez, Elena; Espelosin, Maria; Ursua, Susana; Haizhong, Tan; Wei, Wu; Musheng, Xu; Garcia-Osta, Ana; Oyarzabal, Julen published 《Design, Synthesis, and Biological Evaluation of First-in-Class Dual Acting Histone Deacetylases (HDACs) and Phosphodiesterase 5 (PDE5) Inhibitors for the Treatment of Alzheimer’s Disease》.Journal of Medicinal Chemistry published the findings.Electric Literature of C7H6BrNO2 The information in the text is summarized as follows:

Simultaneous inhibition of phosphodiesterase 5 (PDE5) and histone deacetylases (HDAC) has recently been validated as a potentially novel therapeutic approach for Alzheimer’s Disease (AD). To further extend this concept, the authors designed and synthesized the first chem. series of dual acting PDE5 and HDAC inhibitors, and the authors validated this systems therapeutics approach. Following the implementation of structure- and knowledge-based approaches, initial hits were designed and were shown to validate the hypothesis of dual in vitro inhibition. Then, an optimization strategy was pursued to obtain a proper tool compound for in vivo testing in AD models. Initial hits were translated into mols. with adequate cellular functional responses (histone acetylation and cAMP/cGMP response element-binding (CREB) phosphorylation in the nanomolar range), an acceptable therapeutic window (>1 log unit) and the ability to cross the blood-brain barrier, leading to the identification of 7 as a candidate for in vivo proof-of-concept testing. In the experimental materials used by the author, we found Methyl 5-bromopicolinate(cas: 29682-15-3Electric Literature of C7H6BrNO2)

Methyl 5-bromopicolinate(cas: 29682-15-3) 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. Electric Literature of C7H6BrNO2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2017,Wagman, Allan S.; Boyce, Rustum S.; Brown, Sean P.; Fang, Eric; Goff, Dane; Jansen, Johanna M.; Le, Vincent P.; Levine, Barry H.; Ng, Simon C.; Ni, Zhi-Jie; Nuss, John M.; Pfister, Keith B.; Ramurthy, Savithri; Renhowe, Paul A.; Ring, David B.; Shu, Wei; Subramanian, Sharadha; Zhou, Xiaohui A.; Shafer, Cynthia M.; Harrison, Stephen D.; Johnson, Kirk W.; Bussiere, Dirksen E. published 《Synthesis, Binding Mode, and Antihyperglycemic Activity of Potent and Selective (5-Imidazol-2-yl-4-phenylpyrimidin-2-yl)[2-(2-pyridylamino)ethyl]amine Inhibitors of Glycogen Synthase Kinase 3》.Journal of Medicinal Chemistry published the findings.Reference of 2-(2-Hydroxyethyl)pyridine The information in the text is summarized as follows:

In an effort to identify new antidiabetic agents, we have discovered a novel family of (5-imidazol-2-yl-4-phenylpyrimidin-2-yl)[2-(2-pyridylamino)ethyl]amine analogs which are inhibitors of human glycogen synthase kinase 3 (GSK3). We developed efficient synthetic routes to explore a wide variety of substitution patterns and convergently access a diverse array of analogs. Compound I (CHIR-911, CT-99021, or CHIR-73911) emerged from an exploration of heterocycles at the C-5 position, Ph groups at C-4, and a variety of differently substituted linker and aminopyridine moieties attached at the C-2 position. These compounds exhibited GSK3 IC50s in the low nanomolar range and excellent selectivity. They activate glycogen synthase in insulin receptor-expressing CHO-IR cells and primary rat hepatocytes. Evaluation of lead compounds I and II (CHIR-611 or CT-98014) in rodent models of type 2 diabetes revealed that single oral doses lowered hyperglycemia within 60 min, enhanced insulin-stimulated glucose transport, and improved glucose disposal without increasing insulin levels. The results came from multiple reactions, including the reaction of 2-(2-Hydroxyethyl)pyridine(cas: 103-74-2Reference of 2-(2-Hydroxyethyl)pyridine)

2-(2-Hydroxyethyl)pyridine(cas: 103-74-2) 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. Reference of 2-(2-Hydroxyethyl)pyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Wodtke, Robert; Hauser, Christoph; Ruiz-Gomez, Gloria; Jaeckel, Elisabeth; Bauer, David; Lohse, Martin; Wong, Alan; Pufe, Johanna; Ludwig, Friedrich-Alexander; Fischer, Steffen; Hauser, Sandra; Greif, Dieter; Pisabarro, M. Teresa; Pietzsch, Jens; Pietsch, Markus; Loeser, Reik published 《Nε-Acryloyllysine Piperazides as Irreversible Inhibitors of Transglutaminase 2: Synthesis, Structure-Activity Relationships, and Pharmacokinetic Profiling》.Journal of Medicinal Chemistry published the findings.Recommanded Product: Methyl 5-bromopicolinate The information in the text is summarized as follows:

Transglutaminase 2 (TGase 2)-catalyzed transamidation represents an important post-translational mechanism for protein modification with implications in physiol. and pathophysiol. conditions, including fibrotic and neoplastic processes. Consequently, this enzyme is considered a promising target for the diagnosis of and therapy for these diseases. In this study, we report on the synthesis and kinetic characterization of Nε-acryloyllysine piperazides as irreversible inhibitors of TGase 2. Systematic structural modifications on 54 new compounds were performed with a major focus on fluorine-bearing substituents due to the potential of such compounds to serve as radiotracer candidates for positron emission tomog. The determined inhibitory activities ranged from 100 to 10,000 M-1 s-1, which resulted in comprehensive structure-activity relationships. Structure-activity correlations using various substituent parameters accompanied by covalent docking studies provide an advanced understanding of the mol. recognition for this inhibitor class within the active site of TGase 2. Selectivity profiling of selected compounds for other transglutaminases demonstrated an excellent selectivity toward transglutaminase 2. Furthermore, an initial pharmacokinetic profiling of selected inhibitors was performed, including the assessment of potential membrane permeability and liver microsomal stability. The experimental part of the paper was very detailed, including the reaction process of Methyl 5-bromopicolinate(cas: 29682-15-3Recommanded Product: Methyl 5-bromopicolinate)

Methyl 5-bromopicolinate(cas: 29682-15-3) belongs to pyridine. Pyridine and its simple derivatives are stable and relatively unreactive liquids, with strong penetrating odours that are unpleasant.Recommanded Product: Methyl 5-bromopicolinate

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Zhang, Yue-Mei; Greco, Michael N.; Macielag, Mark J.; Teleha, Christopher A.; DesJarlais, Renee L.; Tang, Yuting; Ho, George; Hou, Cuifen; Chen, Cailin; Zhao, Shuyuan; Kauffman, Jack; Camacho, Raul; Qi, Jenson; Murray, William; Demarest, Keith; Leonard, James published 《6-Benzhydryl-4-amino-quinolin-2-ones as Potent Cannabinoid Type 1 (CB1) Receptor Inverse Agonists and Chemical Modifications for Peripheral Selectivity》.Journal of Medicinal Chemistry published the findings.Category: pyridine-derivatives The information in the text is summarized as follows:

A novel series of 6-benzhydryl-4-amino-quinolin-2-ones was discovered as cannabinoid type 1 receptor (CB1R) inverse agonists based on the high-throughput screening hit, compound 1a. Structure-activity relationships were studied to improve in vitro/in vivo pharmacol. and restrict distribution to the peripheral circulation. We adopted several strategies such as increasing topol. polar surface area, incorporating discrete polyethylene glycol side chains, and targeting P-glycoprotein (P-gp) to minimize access to the brain. Compound 6a is a P-gp substrate and a potent and highly selective CB1R inverse agonist, demonstrating excellent in vivo metabolic stability and a low brain to plasma ratio. However, brain receptor occupancy studies showed that compound 6a may accumulate in brain with repeat dosing. This was evidenced by compound 6a inhibiting food intake and inducing weight loss in diet-induced obese mice. Thus, a strategy based on P-gp efflux may not be adequate for peripheral restriction of the disclosed quinolinone series. The results came from multiple reactions, including the reaction of 5-Bromo-2-chloropyridine(cas: 53939-30-3Category: pyridine-derivatives)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. Pyridine’s structure is isoelectronic with that of benzene, but its properties are quite different. Pyridine is completely miscible with water, whereas benzene is only slightly soluble. Like all hydrocarbons, benzene is neutral (in the acid–base sense), but because of its nitrogen atom, pyridine is a weak base.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Chen, Tie-Gen; Barton, Lisa M.; Lin, Yutong; Tsien, Jet; Kossler, David; Bastida, Inaki; Asai, Shota; Bi, Cheng; Chen, Jason S.; Shan, Mingde; Fang, Hui; Fang, Francis G.; Choi, Hyeong-wook; Hawkins, Lynn; Qin, Tian; Baran, Phil S. published 《Building C(sp3)-rich complexity by combining cycloaddition and C-C cross-coupling reactions》.Nature (London, United Kingdom) published the findings.Name: 5-Bromo-2-chloropyridine The information in the text is summarized as follows:

Prized for their ability to rapidly generate chem. complexity by building new ring systems and stereocentres, cycloaddition reactions have featured in numerous total syntheses and are a key component in the education of chem. students. Similarly, carbon-carbon (C-C) cross-coupling methods are integral to synthesis because of their programmability, modularity and reliability. Within the area of drug discovery, an overreliance on cross-coupling has led to a disproportionate representation of flat architectures that are rich in carbon atoms with orbitals hybridized in an sp2 manner. Despite the ability of cycloadditions to introduce multiple carbon sp3 centers in a single step, they are less used. This is probably because of their lack of modularity, stemming from the idiosyncratic steric and electronic rules for each specific type of cycloaddition Here we demonstrate a strategy for combining the optimal features of these two chem. transformations into one simple sequence, to enable the modular, enantioselective, scalable and programmable preparation of useful building blocks, natural products and lead scaffolds for drug discovery. The results came from multiple reactions, including the reaction of 5-Bromo-2-chloropyridine(cas: 53939-30-3Name: 5-Bromo-2-chloropyridine)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Name: 5-Bromo-2-chloropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Wang, Dong; Shen, Meng; Wang, Yuxi; Hu, Jianyong; Zhao, Junjie; Yu, Peng published 《Access to Furo[2,3-b]pyridines by Transition-Metal-Free Intramolecular Cyclization of C3-substituted Pyridine N-oxides》.Asian Journal of Organic Chemistry published the findings.HPLC of Formula: 53939-30-3 The information in the text is summarized as follows:

Two transition-metal-free synthetic methods for the construction of furo[2,3-b]pyridines such as I [R = H, 5-F, 5-Me, etc.; R1 = Me, Et, Ph, etc.; R2 = Me, Et, Ph, etc.] from corresponding C3-substituted-pyridine-N-oxides were developed by regioselective intramol. nucleophilic addition/rearomatization strategy. Remarkable features of these methods include simple operation, wide substrate scope and easily accessible starting materials. After reading the article, we found that the author used 5-Bromo-2-chloropyridine(cas: 53939-30-3HPLC of Formula: 53939-30-3)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. HPLC of Formula: 53939-30-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem