Pyridine-derivatives

Singh, Kamaljeet; Trinh, Winston; Weaver, Jimmie D. published the artcile< Elusive thermal [2+2] cycloaddition driven by visible light photocatalysis: tapping into strain to access C2-symmetric tricyclic rings>, HPLC of Formula: 370878-69-6, the main research area is thermal cycloaddition visible light photocatalysis strain sym tricyclic ring.

A mild and operationally simple methodol. is reported for the synthesis of cyclobutane rings imbedded within a C2-sym. tricyclic framework. The method uses visible light and an iridium-based photocatalyst to drive the oft-stated “”forbidden”” thermal [2 + 2] cycloaddition of cycloheptenes and analogs. Importantly, it generates cyclobutane with four new stereocenters with excellent stereoselectivity, and perfect regioselectivity. The reaction is propelled forward when the photocatalyst absorbs a visible light photon, which transfers this energy to the cycloheptene. Key to success is, upon excitation to the triplet via sensitization from the photocatalyst, the double bond isomerizes to give the transient, highly strained, trans-cycloheptene. The trans-cycloheptene undergoes a strain relieving thermal, intermol. [π2s + π2a] cycloaddition with another cis-cycloheptene. X-ray anal. reveals that the major product is the head-to-head, C2-sym. all trans-cyclobutane. Addnl., a dramatic display structural complexity enhancement is observed with the use of chiral cycloheptenols possessing one stereocenter, which results in the formation of cyclobutanes with six contiguous stereocenters with good to excellent diastereocontrol, and can be used to isolate single stereoisomers of stereochem. complex cyclobutanes in good yield.

Organic & Biomolecular Chemistry published new progress about Cis-trans isomerization. 370878-69-6 belongs to class pyridine-derivatives, and the molecular formula is C33H21F3IrN3, HPLC of Formula: 370878-69-6.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Wang, Xia; Yang, Qiu-Xia; Long, Cheng-Yu; Tan, Yan; Qu, Yi-Xin; Su, Min-Hui; Huang, Si-Jie; Tan, Weihong; Wang, Xue-Qiang published the artcile< Anticancer-Active N-Heteroaryl Amines Syntheses: Nucleophilic Amination of N-Heteroaryl Alkyl Ethers with Amines>, Electric Literature of 22961-45-1, the main research area is heteroaryl alkyl ether amine nucleophilic amination; amine heteroaryl preparation anticancer activity green chem.

A mild amination protocol of N-heteroaryl alkyl ethers with various amines is described. This transformation is achieved by utilizing simple and readily available base as promoter via C-O bond cleavage, offering a new amination strategy to access several anticancer-active compounds This work is highlighted by the excellent functional group compatibility, scalability, wide substrate scope, and easy derivatization of a variety of drugs.

Organic Letters published new progress about Alkyl aryl ethers Role: RCT (Reactant), RACT (Reactant or Reagent) (heteroaryl). 22961-45-1 belongs to class pyridine-derivatives, and the molecular formula is C11H10N2, Electric Literature of 22961-45-1.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Aramesh-Boroujeni, Zahra; Jahani, Shohreh; Khorasani-Motlagh, Mozhgan; Kerman, Kagan; Noroozifar, Meissam published the artcile< Evaluation of DNA, BSA binding, DNA cleavage and antimicrobial activity of ytterbium(III) complex containing 2,2′-bipyridine ligand>, Product Details of C10H8N2, the main research area is albumin DNA ytterbium antimicrobial activity; Antibacterial activity; binding interaction; bovine serum albumin; fish salmon-DNA; molecular docking; ytterbium(III) complex.

In order to estimate the biol. potential of a synthesized complex [Yb(bpy)2Cl3.OH2] where bpy is 2,2′-bipyridine, its binding behavior with fish salmon-DNA and bovine serum albumin were studied by different kinds of spectroscopy and mol. modeling methods. This complex was selected for its antibacterial and antifungal activities as well as the DNA cleavage activities were examined by agarose gel electrophoresis. The analyses of fluorescence data at four temperatures were done in order to evaluate the binding and thermodn. parameters of the interaction of Yb(III) complex with DNA and BSA. The exptl. results indicated that the major binding modes were based on groove binding with DNA and BSA. In addition, iodide quenching studies, ethidium bromide (EtBr) exclusion assay, ionic strength effect, CD, and viscosity studies reflected the binding of Yb(III) complex explicitly with the FS-DNA mainly in a groove binding mode. Moreover, mol. docking studies indicated that this complex was bound to the minor groove of DNA and to polar and apolar residues located in the subdomain IB of BSA (site 3). Also, the results of competitive experiments assessed site 3 of BSA as the most probable binding site for this complex. The mol. docking results were in good agreement with our exptl. results. From both exptl. and docking results, the binding constant values displayed the remarkably high affinity of Yb(III) complex to DNA as well as BSA.Communicated by Ramaswamy H. Sarma

Journal of Biomolecular Structure and Dynamics published new progress about Acinetobacter baumannii. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Product Details of C10H8N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Mantlo, Nathan B.; Chakravarty, Prasun K.; Ondeyka, Debra L.; Siegl, Peter K. S.; Chang, Raymond S.; Lotti, Victor J.; Faust, Kristie A.; Schorn, Terry W.; Chen, Tsing Bau published the artcile< Potent, orally active imidazo[4,5-b]pyridine-based angiotensin II receptor antagonists>, Name: 2-Amino-3-nitro-6-picoline, the main research area is Angiotensin II antagonist tetrazolylbiphenylylimidazopyridine; imidazopyridine tetrazolylbiphenylyl Angiotensin II antagonist; structure activity antihypertensive tetrazolylbiphenylylimidazopyridine.

Several title Angiotensin II (AII) antagonists I (R = Et, Pr, Bu, R1 = R2 = H, Me; R1 = Me, R2 = H; R1 = H, R2 = Me) were prepared Substituents at the 2, 5, and 7-positions of the imidazopyridine have a profound effect on the in vitro binding affinity to AII receptors (rabbit aorta membrane preparation) and on the inhibition of the AII-induced pressor responses in conscious rats. The most active compound, I (R = Et, R1 = R2 = Me) is extremely potent in vitro (IC50 = 0.3 nM, rabbit aorta), and in vivo (ED50 = 0.048 mg/Kg i.v. and 0.026 mg/Kg p.o., conscious rat). This compound is a specific AT1 antagonist, and substantially lowers the blood pressure of high renin hypertensive rats upon oral dosing (0.1 and 0.3 mg/Kg) with a duration of action exceeding 24 h.

Journal of Medicinal Chemistry published new progress about Antihypertensives. 21901-29-1 belongs to class pyridine-derivatives, and the molecular formula is C6H7N3O2, Name: 2-Amino-3-nitro-6-picoline.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

He, Yuan-Chun; Xiao, Li-Yuan; Yuan, Zi-Han; Zhang, Jie; Wang, Yan; Xu, Na published the artcile< Two coordination polymers constructed by 5-[(4-carboxyphenoxy)methyl]benzene-1,3-dicarboxylic acid and 2,2′-bipyridine: syntheses, structures and luminescence properties>, Electric Literature of 366-18-7, the main research area is carboxyphenoxy methyl benzene dicarboxylic acid bipyridine luminescence; 2,2′-bipyridine; cadmium; coordination polymer; crystal structure; manganese; tricarboxylic acid.

Coordination polymers (CPs) have attracted increasing interest in recent years. In this work, two new CPs, namely poly[[aquabis(2,2′-bipyridine-κ2N,N′){μ3-5-[(4-carboxylatophenoxy)methyl]benzene-1,3-dicarboxylato-κ4O1,O1′:O3:O5}(μ-formato-κ3O:O,O′)dicadmium(II)] monohydrate], {[Cd2(C16H9O7)(HCO2)(C10H8N2)2(H2O)]·H2O}n (1), and poly[[(2,2′-bipyridine-κ2N,N′){μ3-5-[(4-carboxylphenoxy)methyl]benzene-1,3-dicarboxylato-κ4O1,O1′:O3:O5}manganese(II)] sesquihydrate], {[Mn(C16H10O7)(C10H8N2)]·1.5H2O}n (2), have been prepared using the tricarboxylic acid 5-[(4-carboxyphenoxy)methyl]benzene-1,3-dicarboxylic acid and 2,2′-bipyridine under hydrothermal conditions. CP 1 displays a two-dimensional layer structure which is further extended into a three-dimensional (3D) supramol. structure via intermol. π-π interactions, while CP 2 shows a different 3D supramol. structure extended from one-dimensional ladder chains by intermol. π-π interactions. In addition, the solid-state luminescence spectra of 1 and 2 were studied at room temperature

Acta Crystallographica, Section C: Structural Chemistry published new progress about Crystallography. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Electric Literature of 366-18-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Josa-Cullere, Laia; Cogswell, Thomas J.; Georgiou, Irene; Jay-Smith, Morgan; Jackson, Thomas R.; Bataille, Carole J. R.; Davies, Stephen G.; Vyas, Paresh; Milne, Thomas A.; Wynne, Graham M.; Russell, Angela J. published the artcile< Identification and Preliminary Structure-Activity Relationship Studies of 1,5-Dihydrobenzo[e][1,4]oxazepin-2(3H)-ones That Induce Differentiation of Acute Myeloid Leukemia Cells In Vitro>, Name: 3-Amino-5-bromopyridine-2-carboxylic Acid, the main research area is dihydrobenzooxazepinone preparation SAR acute myeloid leukemia pharmacokinetic; CD11b; acute myeloid leukemia; benzooxazepinones; differentiation; phenotypic screen.

A series of 1,5-dihydrobenzo[e][1,4]oxazepin-2(3H)-one hit compounds e.g. I was identified and synthesized. Herein, we report the hit validation in vitro, structure-activity relationship (SAR) studies and the pharmacokinetic profiles for selected compounds

Molecules published new progress about Acute myeloid leukemia. 870997-85-6 belongs to class pyridine-derivatives, and the molecular formula is C6H5BrN2O2, Name: 3-Amino-5-bromopyridine-2-carboxylic Acid.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pang, Maofu; Shi, Le-Le; Xie, Yufang; Geng, Tianyi; Liu, Lan; Liao, Rong-Zhen; Tung, Chen-Ho; Wang, Wenguang published the artcile< Cobalt-Catalyzed Selective Dearomatization of Pyridines to N-H 1,4-Dihydropyridines>, Computed Properties of 93-60-7, the main research area is pyridine cobalt catalyst chemoselective regioselective dearomatization; dihydropyridine preparation.

Catalytic reduction of pyridines to N-H 1,4-dihydropyridines was exceptionally challenging because they are essential intermediates to form tetrahydropyridines. Using a facile dihydrogen source H3N·BH3 to activate the pyridine ring in situ, was achieved by selective transfer hydrogenation of nicotinate derivatives to N-H 1,4-dihydropyridines by cobalt-amido cooperative catalysis. The reactions operated smoothly under mild conditions to produce a variety of N-H 1,4-dihydropyridines with high chemo- and regioselectivity. This catalytic method also provides a practical protocol to regenerate Hantzsch analogs after delivery of H2.

ACS Catalysis published new progress about Chemoselectivity. 93-60-7 belongs to class pyridine-derivatives, and the molecular formula is C7H7NO2, Computed Properties of 93-60-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Wang, Xinfeng; Liu, Huanhuan; Xie, Caixia; Zhou, Feiyu; Ma, Chen published the artcile< Terminal methyl as a one-carbon synthon: Synthesis of quinoxaline derivatives via radical-type transformation>, Recommanded Product: 2-Amino-3-nitro-6-picoline, the main research area is pyrroloquinoxaline preparation; pyrrolylaniline carbon source carbon hydrogen activation oxidative cyclization iron; indoloquinoxaline preparation; indolylaniline carbon source carbon hydrogen activation oxidative cyclization iron.

An iron-promoted method for the construction of pyrrolo[1,2-a]quinoxaline derivatives I [R1 = H, 7-Me, 7-Br, 8-Cl, etc., R2 = H, Me, X, Y = CH, N] and indolo[1,2-a]quinaxaline derivatives II [R3 = H, 3-F, 2-OMe, etc., R4 = H, Me] was developed via sp3 C-H activation and oxidative cyclization of pyrrolyl-anilines/indolyl-anilines and various carbon sources. This method has many advantages including the availability of raw materials, simple operation, reaction efficiency, universal solvent applicability and wide substrate scope.

New Journal of Chemistry published new progress about Anilines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 21901-29-1 belongs to class pyridine-derivatives, and the molecular formula is C6H7N3O2, Recommanded Product: 2-Amino-3-nitro-6-picoline.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Liu, Zhong; He, Jia-Hao; Zhang, Ming; Shi, Zhu-Jun; Tang, Han; Zhou, Xin-Yue; Tian, Jun-Jie; Wang, Xiao-Chen published the artcile< Borane-Catalyzed C3-Alkylation of Pyridines with Imines, Aldehydes, or Ketones as Electrophiles>, Product Details of C7H7NO2, the main research area is C3 selective pyridine preparation regioselective; pyridine imine aldehyde ketone alkylation borane catalyst.

Achieving C3-selective pyridine functionalization is a longstanding challenge in organic chem. The existing methods, including electrophilic aromatic substitution and C-H activation, often require harsh reaction conditions and excess pyridine and generate multiple regioisomers. Herein, authors report a method for borane-catalyzed tandem reactions that result in exclusively C3-selective alkylation of pyridines. These tandem reactions consist of pyridine hydroboration, nucleophilic addition of the resulting dihydropyridine to an imine, an aldehyde, or a ketone, and subsequent oxidative aromatization. Because the pyridine is the limiting reactant and the reaction conditions are mild, this method constitutes a practical tool for late-stage functionalization of structurally complex pharmaceuticals bearing a pyridine moiety.

Journal of the American Chemical Society published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 93-60-7 belongs to class pyridine-derivatives, and the molecular formula is C7H7NO2, Product Details of C7H7NO2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kulkarni, Santosh S.; Newman, Amy Hauck published the artcile< Discovery of heterobicyclic templates for novel metabotropic glutamate receptor subtype 5 antagonists>, Recommanded Product: 2-Amino-3-nitro-6-picoline, the main research area is quinoline benzothiazole preparation glutamate receptor antagonist SAR; pyridothiazole imidazopyridine preparation glutamate receptor antagonist SAR.

Investigation of a series of heterobicyclic compounds with essential pharmacophoric features of the metabotropic glutamate receptor 5 (mGluR5) antagonists MPEP and MTEP provided novel structural templates with sub-micromolar affinities at the mGluR5. Compound I showed antagonist activity (IC50 = 0.26 μM) in the functional assay measuring hydrolysis of phosphoinositide and may provide a new lead for further SAR investigation.

Bioorganic & Medicinal Chemistry Letters published new progress about Metabotropic glutamate receptors, group I, mGluR5 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 21901-29-1 belongs to class pyridine-derivatives, and the molecular formula is C6H7N3O2, Recommanded Product: 2-Amino-3-nitro-6-picoline.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem