Category: 366-18-7

Arora, Santosh; Talwar, Dinesh; Singh, Manjeet; Sahoo, Subash C.; Sharma, Rohit published the artcile< Second sphere coordination in orthonitrophenolate binding: Synthesis, biological, cytotoxic and X-ray structural studies of [Co(bpy)2CO3](C6H4NO3)·3H2O>, Computed Properties of 366-18-7, the main research area is crystal structure cobalt bipyridine carbonato orthonitrophenolate; cobalt bipyridine carbonato nitrophenolate preparation cytotoxic antimicrobial activity.

A new Co (III) complex salt [Co(bpy)2CO3](ONP)·3H2O (1) where ONP = orthonitrophenolate/C6H4NO3 was synthesized to explore [Co(bpy)2CO3]+ cation as a new host for orthonitrophenolate anion. The newly synthesized complex salt was then characterized by elemental anal., spectroscopic techniques (UV-Visible, FTIR, 1H NMR) and solubility product measurement. Single crystal x-ray structure studies of 1 revealed one 2-nitrophenolate anion, one [Co(bpy)2CO3]+cation and three H2O mols. of crystallization in the solid state. The structural studies revealed that a strong network of H bonding interactions O-H···O (water/phenolate), O-H···O (water/H2O), O-H···O (water/carbonate) stabilize the crystal lattice. Newly synthesized complex 1 was scrutinized for antimicrobial activity and the results revealing a modest activity. The synthesized compound was screened for anticancer activity against PANC-1 cells using MTT colorimetric assay.

Journal of Molecular Structure published new progress about Antibacterial agents. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Computed Properties of 366-18-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Li, Ze; Li, Wenwei; Lu, Maolin; Bess, Julian Jr; Chao, Cara W.; Gorman, Jason; Terry, Daniel S.; Zhang, Baoshan; Zhou, Tongqing; Blanchard, Scott C.; Kwong, Peter D.; Lifson, Jeffrey D.; Mothes, Walther; Liu, Jun published the artcile< Subnanometer structures of HIV-1 envelope trimers on aldrithiol-2-inactivated virus particles>, Formula: C10H8N2, the main research area is .

Abstract: The HIV-1 envelope glycoprotein (Env) trimer, composed of gp120 and gp41 subunits, mediates viral entry into cells. Recombinant Env trimers have been studied structurally, but characterization of Env embedded in intact virus membranes has been limited to low resolution Here, we deploy cryo-electron tomog. and subtomogram averaging to determine the structures of Env trimers on aldrithiol-2 (AT-2)-inactivated virions in ligand-free, antibody-bound and CD4-bound forms at subnanometer resolution Tomog. reconstructions document mol. features consistent with high-resolution structures of engineered soluble and detergent-solubilized Env trimers. One of three conformational states previously predicted by smFRET was not observed by cryo-ET, potentially owing to AT-2 inactivation. We did observe Env trimers to open in situ in response to CD4 binding, with an outward movement of gp120-variable loops and an extension of a critical gp41 helix. Overall features of Env trimer embedded in AT-2-treated virions appear well-represented by current engineered trimers.

Nature Structural & Molecular Biology published new progress about 366-18-7. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Formula: C10H8N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Wang, Shaohui; Yang, Denghui; Wu, Xiaojun; Yi, Zhengfei; Wang, Yang; Xin, Suhua; Wang, Dong; Tian, Mingxing; Li, Tao; Qi, Jingjing; Ding, Chan; Yu, Shengqing published the artcile< The ferric uptake regulator represses type VI secretion system function by binding directly to the clpV promoter in Salmonella enteric serovar Typhimurium>, Application of C10H8N2, the main research area is Fur; S. Typhimurium; clpV ; regulation; type VI secretion system.

Type VI secretion systems (T6SSs) are highly conserved and complex protein secretion systems that deliver effector proteins into eukaryotic hosts or other bacteria. T6SSs are regulated precisely by a variety of regulatory systems, which enables bacteria to adapt to varied environments. A T6SS within Salmonella pathogenicity island 6 (SPI-6) is activated during infection, and it contributes to the pathogenesis, as well as interbacterial competition, of Salmonella enterica serovar Typhimurium (S. Typhimurium). However, the regulation of the SPI-6 T6SS in S. Typhimurium is not well understood. In this study, we found that the SPI-6 T6SS core gene clpV was significantly upregulated in response to the iron-depleted condition and during infection. The global ferric uptake regulator (Fur) was shown to repress the clpV expression in the iron-replete medium. Moreover, electrophoretic mobility shift and DNase I footprinting assays revealed that Fur binds directly to the clpV promoter region at multiple sites spanning the transcriptional start site. We also observed that the relieving of Fur-mediated repression on clpV contributed to the interbacterial competition activity and pathogenicity of S. Typhimurium. These findings provide insights into the direct regulation of Fur in the expression and functional activity of SPI-6 T6SS in S. Typhimurium and thus help to elucidate the mechanisms of bacterial adaptability and virulence.

Infection and Immunity published new progress about 366-18-7. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Application of C10H8N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Neranon, Kitjanit; Alberch, Laura; Ramstroem, Olof published the artcile< Design, Synthesis and Self-Assembly of Functional Amphiphilic Metallodendrimers>, HPLC of Formula: 366-18-7, the main research area is self assembly functional amphiphilic metallodendrimers decomplexation; amphiphiles; coordination; metallodendrimers; nanomaterials; self-assembly; supramolecular systems.

A new family of alkynylated, amphiphilic dendrimers consisting of amidoamine linkers connected to 5,5′-functionalized 2,2′-bipyridine cores has been developed and evaluated in the formation of metallodendrimers of different generations and in self-assembly protocols. A convergent synthetic strategy was applied to provide dumbbell-shaped amphiphilic dendrimers, where the 2,2′-bipyridine cores could be coordinated to FeII centers to afford corresponding metallodendrimers. The ability of the metallic- and non-metallic dendritic structures to self-assemble into functional supramol. aggregates were furthermore evaluated in aqueous solution Spherical aggregates with sizes of a few hundred nanometers were generally produced, where controlled disassembly of the metallodendrimers through decomplexation could be achieved.

ChemistryOpen published new progress about Alkynylation. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, HPLC of Formula: 366-18-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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 published the artcile< Rationally Designed Long-Wavelength Absorbing Ru(II) Polypyridyl Complexes as Photosensitizers for Photodynamic Therapy>, HPLC of Formula: 366-18-7, the main research area is ruthenium polypyridyl complex preparation cancer PDT photosensitizer.

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.

Journal of the American Chemical Society published new progress about Antitumor agents. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, HPLC of Formula: 366-18-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Choi, Hyukjae; Lee, Wonhwa; Kim, Eonmi; Ku, Sae-Kwang; Bae, Jong-Sup published the artcile< Inhibitory effects of collismycin C and pyrisulfoxin A on particulate matter-induced pulmonary injury>, Name: 2,2′-Bipyridine, the main research area is pulmonary injury collismycin C pyrisulfoxin A particulate matter; Akt; Collismycin C; Particulate matter; Pyrisulfoxin A; Vascular permeability.

Inhalation of fine particulate matter (PM2.5) is associated with elevated pulmonary injury caused by the loss of vascular barrier integrity. Marine microbial natural products isolated from microbial culture broths were screened for pulmonary protective effects against PM2.5. Two 2,2′-bipyridine compounds isolated from a red alga-associated Streptomyces sp. MC025-collismycin C (2) and pyrisulfoxin A (5)-were found to inhibit PM2.5-mediated vascular barrier disruption. To confirm the inhibitory effects of collismycin C and pyrisulfoxin A on PM2.5-induced pulmonary injury. In this study, we investigated the beneficial effects of collismycin C and pyrisulfoxin A on PM-induced lung endothelial cell (EC) barrier disruption and pulmonary inflammation. Permeability, leukocyte migration, proinflammatory protein activation, reactive oxygen species (ROS) generation, and histol. were evaluated in PM2.5-treated ECs and mice. Collismycin C and pyrisulfoxin A significantly scavenged PM2.5-induced ROS and inhibited the ROS-induced activation of p38 mitogen-activated protein kinase as well as activated Akt, which helped in maintaining endothelial integrity, in purified pulmonary endothelial cells. Furthermore, collismycin C and pyrisulfoxin A reduced vascular protein leakage, leukocyte infiltration, and proinflammatory cytokine release in the bronchoalveolar lavage fluid of PM-treated mice. These data suggested that collismycin C and pyrisulfoxin A might exert protective effects on PM-induced inflammatory lung injury and vascular hyperpermeability.

Phytomedicine published new progress about Bronchoalveolar lavage fluid. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Name: 2,2′-Bipyridine.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Bhattacharyya, Manjit K.; Gogoi, Anshuman; Chetry, Sanjib; Dutta, Debajit; Verma, Akalesh K.; Sarma, Bipul; Franconetti, Antonio; Frontera, Antonio published the artcile< Antiproliferative evaluation and supramolecular association in Mn(II) and Zn(II) bipyridine complexes: Combined experimental and theoretical studies>, SDS of cas: 366-18-7, the main research area is manganese methylbenzoate bipyridine complex preparation crystal mol structure antiproliferative; zinc pyridinedicarboxylate bipyridine complex preparation crystal mol structure antiproliferative; Apoptosis; Cooperativity; Cytotoxicity; Docking; T-cell lymphoma; π–π stacking.

Two new coordination complexes viz. [Mn2(μ-O,O’-4-Mebz)2(bpy)2(μ2-H2O)(4-Mebz)2] (1) and [Zn(bpy)(pdc)(H2O)]·3.5H2O (2) (where bpy = 2,2′-bipyridine, 4-Mebz = 4-Me benzoate and pdc = 2,6-pyridine dicarboxylate) were synthesized and structurally characterized by single crystal x-ray diffraction, FT-IR, electronic spectroscopy, Thermogravimetric Anal. (TGA) and Powder x-ray diffraction (PXRD) techniques. Complex 1 consists of a dinuclear Mn(II) unit bridged by a solvent water mol. while 2 is a mononuclear complex. The supramol. assemblies found in the solid state of both complexes have been described. In 2, several π-stacking interactions modes have been further studied using D. Functional Theory (DFT) calculations Furthermore, the activity of the complexes against a few pathogenic bacteria has been studied and confirmed. Finally, the antiproliferative activities of both complexes have been studied in T-cell lymphoma cell line by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, apoptosis assay and mol. docking simulation. Both the complexes exhibit gratifying cytotoxicity through apoptotic cell death with negligible cytotoxicity (∼5-10%) in normal cells. It is worth mentioning that Mn(II) and Zn(II) complexes exhibit interaction modes with highly expressed cancer target proteins under study with higher binding affinity and the results are comparable with reference inhibitors.

Journal of Inorganic Biochemistry published new progress about Antibacterial agents. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, SDS of cas: 366-18-7.

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

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

Dill, Ryan D.; Portillo, Romeo I.; Shepard, Samuel G.; Shores, Matthew P.; Rappe, Anthony K.; Damrauer, Niels H. published the artcile< Long-Lived Mixed 2MLCT/MC States in Antiferromagnetically Coupled d3 Vanadium(II) Bipyridine and Phenanthroline Complexes>, Product Details of C10H8N2, the main research area is antiferromagnetically Vanadium bipyridine phenanthroline complex; DFT Long Lived Mixed MLCT MC States; time resolved spectroscopy support spectroelectrochem computational; electronic spectroscopy Antiferromagnetic Vanadium Bipyridine Phenanthroline Complexes.

Exploration of [V(bpy)3]2+ and [V(phen)3]2+ (bpy = 2,2′-bipyridine; phen = 1,10-phenanthroline) using electronic spectroscopy reveals an ultrafast excited-state decay process and implicates a pair of low-lying doublets with mixed metal-to-ligand charge-transfer (MLCT) and metal-centered (MC) character. Transient absorption (TA) studies of the vanadium(II) species probing in the visible and near-IR, in combination with spectroelectrochem. techniques and computational chem., lead to the conclusion that after excitation into the intense and broad visible 4MLCT ← 4GS (ground-state) absorption band (ε400-700 nm = 900-8000 M-1 cm-1), the 4MLCT state rapidly (τisc < 200 fs) relaxes to the upper of two doublet states with mixed MLCT/MC character. Electronic interconversion (τ ~2.5-3 ps) to the long-lived excited state follows, which we attribute to formation of the lower mixed state. Following these initial dynamics, GS recovery ensues with τ = 430 ps and 1.6 ns for [V(bpy)3]2+ and [V(phen)3]2+, resp. This stands in stark contrast with isoelectronic [Cr(bpy)3]3+, which rapidly forms a long-lived doublet metal-centered (2MC) state following photoexcitation and lacks strong visible GS absorption character. 2MLCT character in the long-lived states of the vanadium(II) species produces geometric distortion and energetic stabilization, both of which accelerate nonradiative decay to the GS compared to [Cr(bpy)3]3+, where the GS and 2MC are well nested. These conclusions are significant because (i) long-lived states with MLCT character are rare in first-row transition-metal complexes and (ii) the presence of a 2MLCT state at lower energy than the 4MLCT state has not been previously considered. The spin assignment of charge-transfer states in open-shell transition-metal complexes is not trivial; when metal-ligand interaction is strong, low-spin states must be carefully considered when assessing reactivity and decay from electronic excited states. Metal-to-ligand charge-transfer (MLCT) states of vanadium(II) polypyridyl complexes are characterized by antiferromagnetic coupling, leading to exceptions to Hund′s rule of maximum multiplicity. Time-resolved spectroscopy, with support from spectroelectrochem. and computational studies, suggests mixing of the low-spin 2MLCT with doublet metal-centered states. This should be considered for the development of related complexes for photoredox catalysis. Inorganic Chemistry published new progress about Antiferromagnetic materials. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, Product Details of C10H8N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem