Category: pyridine-derivatives

SDS of cas: 1134-35-6In 2020 ,《Rationally Designed Long-Wavelength Absorbing Ru(II) Polypyridyl Complexes as Photosensitizers for Photodynamic Therapy》 was published in Journal of the American Chemical Society. The article was written by Karges, Johannes; Heinemann, Franz; Jakubaszek, Marta; Maschietto, Federica; Subecz, Chloe; Dotou, Mazzarine; Vinck, Robin; Blacque, Olivier; Tharaud, Mickael; Goud, Bruno; Vinuelas Zahinos, Emilio; Spingler, Bernhard; Ciofini, Ilaria; Gasser, Gilles. The article contains the following contents:

The utilization of photodynamic therapy (PDT) for the treatment of various types of cancer has gained increasing attention over the last decades. Despite the clin. success of approved photosensitizers (PSs), their application is sometimes limited due to poor water solubility, aggregation, photodegradation, and slow clearance from the body. To overcome these drawbacks, research efforts are devoted toward the development of metal complexes and especially Ru(II) polypyridine complexes based on their attractive photophys. and biol. properties. Despite the recent research developments, the vast majority of complexes utilize blue or UV-A light to obtain a PDT effect, limiting the penetration depth inside tissues and, therefore, the possibility to treat deep-seated or large tumors. To circumvent these drawbacks, we present the first example of a DFT guided search for efficient PDT PSs with a substantial spectral red shift toward the biol. spectral window. Thanks to this design, we have unveiled a Ru(II) polypyridine complex that causes phototoxicity in the very low micromolar to nanomolar range at clin. relevant 595 nm, in monolayer cells as well as in 3D multicellular tumor spheroids.4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6SDS of cas: 1134-35-6) was used in this study.

4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6) is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.SDS of cas: 1134-35-6 Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used as a chemical Intermediate. It can be used for the determination of ferrous and cyanide compounds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 4,4′-Dimethyl-2,2′-bipyridineIn 2020 ,《A Multi-action and Multi-target RuII-PtIV Conjugate Combining Cancer-Activated Chemotherapy and Photodynamic Therapy to Overcome Drug Resistant Cancers》 was published in Angewandte Chemie, International Edition. The article was written by Karges, Johannes; Yempala, Thirumal; Tharaud, Mickael; Gibson, Dan; Gasser, Gilles. The article contains the following contents:

PtII complexes are commonly used to treat cancer. To reduce their side effects and improve their pharmacol. properties, PtIV complexes are being developed as prodrug candidates that are activated by reduction in cancer cells. Concomitantly, RuII polypyridine complexes have gained much attention as photosensitizers for use in photodynamic therapy due to their attractive characteristics. In this article, a novel PtIV-RuII conjugate, which combines cancer activated chemotherapy with PDT, is presented. Upon entering the cancer cell, the PtIV center is reduced to PtII and the axial ligands including the RuII complex and phenylbutyrate are released. As each component has its individual targets, the conjugate exerts a multi-target and multi-action effect with (photo-)cytotoxicity values upon irradiation up to 595 nm in the low nanomolar range in various (drug resistant) 2D monolayer cancer cells and 3D multicellular tumor spheroids. In the experiment, the researchers used many compounds, for example, 4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6Reference of 4,4′-Dimethyl-2,2′-bipyridine)

4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6) is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.Reference of 4,4′-Dimethyl-2,2′-bipyridine Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used as a chemical Intermediate. It can be used for the determination of ferrous and cyanide compounds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 29682-15-3In 2008 ,《Design, synthesis, and biological evaluation of 8-biarylquinolines: A novel class of PDE4 inhibitors》 appeared in Bioorganic & Medicinal Chemistry Letters. The author of the article were Gallant, Michel; Chauret, Nathalie; Claveau, David; Day, Stephen; Deschenes, Denis; Dube, Daniel; Huang, Zheng; Lacombe, Patrick; Laliberte, France; Levesque, Jean-Francois; Liu, Susana; Macdonald, Dwight; Mancini, Joseph; Masson, Paul; Mastracchio, Anthony; Nicholson, Donald; Nicoll-Griffith, Deborah A.; Perrier, Helene; Salem, Myriam; Styhler, Angela; Young, Robert N.; Girard, Yves. The article conveys some information:

The structure-activity relationship of a novel series of 8-biarylquinolines, e.g., I, acting as type 4 phosphodiesterase (PDE4) inhibitors is described herein. Prototypical compounds from this series are potent and non-selective inhibitors of the four distinct PDE4 (IC50 < 10 nM) isoenzymes (A-D). In a human whole blood in vitro assay, they inhibit (IC50 < 0.5 μM) the LPS-induced release of the cytokine TNF-α. Optimized inhibitors were evaluated in vivo for efficacy in an ovalbumin-induced bronchoconstriction model in conscious guinea pigs. Their propensity to produce an emetic response was evaluated by performing pharmacokinetic studies in squirrel monkeys. This work has led to the identification of several compounds with excellent in vitro and in vivo profiles, including a good therapeutic window of efficacy over emesis. In the part of experimental materials, we found many familiar compounds, such as Methyl 5-bromopicolinate(cas: 29682-15-3Application of 29682-15-3)

Methyl 5-bromopicolinate(cas: 29682-15-3) belongs to pyridine. Pyridine and pyridine-derived structures are privileged pharmacophores in medicinal chemistry and an essential functionality for organic chemists. As the prototypical π-deficient heterocycle, pyridine illustrates distinctive chemistry as both substrate and reagent. Application of 29682-15-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Safety of 4-CyanopyridineIn 2020 ,《Niacin as a Potent Organocatalyst towards the Synthesis of Quinazolines Using Nitriles as C-N Source》 appeared in European Journal of Organic Chemistry. The author of the article were Gujjarappa, Raghuram; Vodnala, Nagaraju; Reddy, Velma Ganga; Malakar, Chandi C.. The article conveys some information:

An efficient and cost-effective Vitamin-B3-catalyzed protocol towards the synthesis of diversely substituted quinazolines is illustrated using 2-aminobenzylamines and nitriles as substrates. An organocatalytic transformation has been investigated where nitrile plays a role of C-N bond donor. The developed approach is applicable on a wide range of 2-aminobenzylamines and nitriles for the synthesis of substituted quinazolines in high yields with a broad functional group tolerance.4-Cyanopyridine(cas: 100-48-1Safety of 4-Cyanopyridine) was used in this study.

4-Cyanopyridine(cas: 100-48-1) belongs to pyridine. Pyridine and pyridine-derived structures are privileged pharmacophores in medicinal chemistry and an essential functionality for organic chemists. As the prototypical π-deficient heterocycle, pyridine illustrates distinctive chemistry as both substrate and reagent. Safety of 4-Cyanopyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Category: pyridine-derivativesIn 2022 ,《Effects of 3-Pyridinylboronic acid in zebrafish enmbryos exposed to neurotoxin,1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine》 appeared in Drug and Chemical Toxicology (1977). The author of the article were Ustundag, Fumet Duygu; Unal, Ismail; Cansiz, Derya; Ustundag, Unsal Veli; Subasat, Hulya Kara; Alturfan, A. Ata; Tiber, Pinar Mega; Emekli-Alturfan, Ebru. The article conveys some information:

1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) is a neurotoxin that damages dopaminergic neurons. Zebrafish has been shown to be a suitable model organism to investigate the mol. pathways in the pathogenesis of Parkinson disease and also for potential therapeutic agent research. Boron has been shown to play an important role in the neural activity of the brain. Boronic acids are used in combinatorial approaches in drug design and discovery. The effect of 3-pyridinylboronic acid which is an important sub-class of heterocyclic boronic acids has not been evaluated in case of MPTP exposure in zebrafish embryos. Accordingly, this study was designed to investigate the effects of 3-pyridinylboronic acid on MPTP exposed zebrafish embryos focusing on the mol. pathways related to neurodegeneration and apoptosis by RT-PCR. Zebrafish embryos were exposed to MPTP (800μM); MPTP + Low Dose 3-Pyridinylboronic acid (50μM) (MPTP + LB) and MPTP + High Dose 3-Pyridinylboronic acid (100μM) (MPTP + HB) in well plates for 72 h post fertilization. Results of our study showed that MPTP induced a P53 dependent and Bax mediated apoptosis in zebrafish embryos and 3-pyridinylboronic acid restored the locomotor activity and gene expressions related to mitochondrial dysfunction and oxidative stress due to the deleterious effects of MPTP, in a dose-dependent manner. The experimental process involved the reaction of Pyridin-3-ylboronic acid(cas: 1692-25-7Category: pyridine-derivatives)

Pyridin-3-ylboronic acid(cas: 1692-25-7) belongs to pyridine. Pyridine and pyridine-derived structures are privileged pharmacophores in medicinal chemistry and an essential functionality for organic chemists. As the prototypical π-deficient heterocycle, pyridine illustrates distinctive chemistry as both substrate and reagent. Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

SDS of cas: 128071-75-0In 2020 ,《Synthetic Strategy Studies for a Concise Access to Functionalized Pyrano[4,3-b]pyridin-7-ones: An Entry to Semi-Rigid Analogs of Antihistamines》 appeared in European Journal of Organic Chemistry. The author of the article were Beghennou, Anissa; Passador, Kevin; Passador, Anthony; Corce, Vincent; Thorimbert, Serge; Botuha, Candice. The article conveys some information:

We report short and efficient syntheses of polyfunctionalized 5,8-dihydro-7H-pyrano[4,3-b]pyridin-7-ones and 1,4-dihydro-3H-pyrano[4,3-c]pyridin-3-ones which can be considered as new aza analogs of 3-isochromanones and as promising scaffolds for medicinal chem. Depending on the nature of the substituent, three different and complementary synthetic methodologies were used allowing the introduction of significant diversity in the substituent on the lactone ring of the pyranopyridinones. The selective α-arylation of nitrile (SNAr) and tert-Bu ester enolate (Pd catalyzed) followed by an acidic mediated lactonization gives access to original C8-functionalized pyrano[4,3-b]pyridin-7-ones and a seleno-mediated cyclization to C1-functionalized pyrano[4,3-c]pyridin-3-ones. We have also applied the outlined synthetic methodologies to the preparation of potential semi-rigid analogs of antihistamines. In the experiment, the researchers used many compounds, for example, 2-Bromonicotinaldehyde(cas: 128071-75-0SDS of cas: 128071-75-0)

2-Bromonicotinaldehyde(cas: 128071-75-0) belongs to pyridine. The basicity and metallophilic high donor number of these π-deficient systems has long favored them as ligands in metal catalysis. The last decade saw pyridine assume a stronger role as functional group for directed C–H oxidation/activation.SDS of cas: 128071-75-0

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Computed Properties of C6H4N2In 2019 ,《An unusual werner type clathrate of Mn(II) benzoate involving energetically significant weak C-H···C contacts: A combined experimental and theoretical study》 appeared in Journal of Molecular Structure. The author of the article were Nashre-ul-Islam, Swah Mohd.; Dutta, Debajit; Guha, Ankur K.; Bhattacharyya, Manjit K.. The article conveys some information:

A new Werner type manganese(II) clatharate [Mn(Bz)2(H2O)4]•(4-CNpy)•2H2O (1), where Bz = benzoate and 4-CNpy = 4-cyanopyridine, was synthesized at room temperature and characterized by x-ray crystal structure anal., FTIR, electronic spectrum and TGA. The crystal structure of cocrystal hydrate of 1 involves a discrete host monomer with enclathrated water and 4-CNpy mols. Crystallog. studies on the compound 1 reveal that enclathration of guest water mols. in the Mn(II) host units results in a supramol. tetramer in the crystal structure of 1 involving weak C-H···C contacts. The geometry of the supramol. host tetramer with the guest 4-CNpy mols. was fully optimized using the crystallog. coordinates and the computational results suggest that the observed C-H···C interactions are energetically quite significant. Both electrostatics as well as dispersion interactions are the most dominant contributors towards the stabilization of the C-H···C interaction.4-Cyanopyridine(cas: 100-48-1Computed Properties of C6H4N2) was used in this study.

4-Cyanopyridine(cas: 100-48-1) belongs to pyridine. The basicity and metallophilic high donor number of these π-deficient systems has long favored them as ligands in metal catalysis. The last decade saw pyridine assume a stronger role as functional group for directed C–H oxidation/activation.Computed Properties of C6H4N2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

COA of Formula: C7H4F3NO3On November 30, 2010 ,《A General Approach to (Trifluoromethoxy)pyridines: first X-ray Structure Determinations and Quantum Chemistry Studies》 appeared in European Journal of Organic Chemistry. The author of the article were Manteau, Baptiste; Genix, Pierre; Brelot, Lydia; Vors, Jean-Pierre; Pazenok, Sergiy; Giornal, Florence; Leuenberger, Charlotte; Leroux, Frederic R.. The article conveys some information:

The previously unknown 2-, 3-, and 4-(trifluoromethoxy)pyridines have now become readily accessible by means of an efficient and straightforward large-scale synthesis. Their regioselective functionalization by organometallic methods has been studied and has afforded new and highly important building blocks for life-sciences-oriented research. In addition, the first X-ray crystallog. structure determinations of (trifluoromethoxy)pyridines have been performed. Lowest-energy conformations of (trifluoromethoxy)pyridines and (trifluoromethoxy)pyridinium cations were determined by in silico studies.3-(Trifluoromethoxy)picolinic acid(cas: 1221171-81-8COA of Formula: C7H4F3NO3) was used in this study.

3-(Trifluoromethoxy)picolinic acid(cas: 1221171-81-8) 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.COA of Formula: C7H4F3NO3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Zinc(II) Complexes of N,N-Di(2-picolyl)hydrazones》 was written by Barsoum, David N.; Kyeremeh-Mensah, Lawrence; Meisner, Quinton J.; Clark, Ronald J.; Masson, Eric; Zhu, Lei. Quality Control of 2-(Bromomethyl)pyridine hydrobromideThis research focused onzinc dipicolylhydrazone complex preparation NMR spectra crystal structure. The article conveys some information:

The authors report on N,N-di(2-picolyl)hydrazone (DPH) ligands that are capable of binding metal ions in two isomeric forms depending on the nature of the hydrazone substituent. When the hydrazone substituent is not coordinating, the metal ion prefers the N,N-di(2-picolyl)amino (DPA) site, which is a known tridentate ligand that anchors on the sp3-hybridized amino nitrogen atom. When the hydrazone substituent is coordinating, the metal ion instead anchors on the sp2-hybridized imino nitrogen atom to afford a different structural isomer. Zinc(II) was used as a representative transition-metal ion for characterizing the coordination chem. of DPH in both solution and solid states, to form [Zn(L)Cl2], [Zn(L)2](ClO4)2 and [Zn(L)](ClO4)2. The experimental part of the paper was very detailed, including the reaction process of 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Quality Control of 2-(Bromomethyl)pyridine hydrobromide)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Quality Control of 2-(Bromomethyl)pyridine hydrobromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Progressive structural modification to a zinc-actuated photoinduced electron transfer (PeT) switch in the context of intracellular zinc imaging》 was written by Macias-Contreras, Miguel; Daykin, Kirsten L.; Simmons, J. Tyler; Allen, John R.; Hooper, Zachary S.; Davidson, Michael W.; Zhu, Lei. Application In Synthesis of 2-(Bromomethyl)pyridine hydrobromideThis research focused onzinc actuated photoinduced electron transfer switch intracellular imaging. The article conveys some information:

Photoinduced electron transfer (PeT)-type fluorescent mol. switches are often applied in ion-selective sensors. Zinc-targeting sensors that contain an anilino-based electron donor (aka, the PeT ‘switch’) have multiple advantages over those with an aliphatic amino switch. In addition to the lower pKa value of an aniline than that of a comparably substituted aliphatic amine, which reduces the interference of pH on the spectral properties of the attached fluorophore, the oxidation potentials of anilino groups are lower than those of aliphatic amino counterparts, which make them better electron donors in PeT. The effectiveness of anilino as a PeT switch is evaluated in a series of zinc-sensitive sensors that contain different fluorophores, zinc-binding ligands, and alkyl linkers between ligand and fluorophore. The abilities of these compounds to distinguish high and low intracellular zinc concentrations in living cells are demonstrated. In addition to this study using 2-(Bromomethyl)pyridine hydrobromide, there are many other studies that have used 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Application In Synthesis of 2-(Bromomethyl)pyridine hydrobromide) was used in this study.

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Application In Synthesis of 2-(Bromomethyl)pyridine hydrobromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem