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José M M Lima et al.
Journal of molecular modeling, 19(4), 1727-1737 (2013-01-09)
Nitric oxide (NO) is an important chemical compound involved in many physiological and pathological processes in living organisms. However, nitric oxide is a very reactive radical that needs to be carried through organisms to reach the desired biological target. With
So-Young Ma et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 113, 261-267 (2013-06-06)
The solid-state structures and unequivocal stereochemistries of isomeric pyridine-based leuco-triarylmethane (LTAM) dyes 2,2'-(2-(pyridin-4 or 3-yl)propane-1,3-diylidene)bis(5-chloro-1,3,3-trimethylindoline) derivatives were established by X-ray crystallography. Surprisingly, the EE isomer was formed for the 4-pyridinyl compound, whereas the 3-pyridinyl compound formed ZE isomers. In addition
Nicolas Zydziak et al.
Macromolecular rapid communications, 34(8), 672-680 (2013-03-19)
Single-walled carbon nanotubes (SWCNTs) are pre-functionalized with a pyridinyl-based dithioester to undergo a hetero Diels-Alder (HDA) reaction with cyclopentadienyl end-capped poly(methyl)methacrylate (Mn = 2700 g mol(-1) , PDI = 1.14). Fourier transform infrared spectroscopy, thermogravimetric analysis, elemental analysis (EA), and
Junichi Hoshino et al.
Journal of nanoscience and nanotechnology, 13(7), 4593-4600 (2013-08-02)
Thymidine derivatives with carboxylic acid and pyridyl groups were synthesized for constructing one-dimensional network structure based on hydrogen bonding in crystalline state. The solid sate structures and hydrogen bonding networks of the thymidine derivatives were characterized by single X-ray diffraction
Ye Wei et al.
Journal of the American Chemical Society, 135(10), 3756-3759 (2013-02-27)
We describe here a [3+3]-type condensation reaction of O-acetyl ketoximes and α,β-unsaturated aldehydes that is synergistically catalyzed by a copper(I) salt and a secondary ammonium salt (or amine). This redox-neutral reaction allows modular synthesis of a variety of substituted pyridines
Daniel Sieh et al.
Journal of the American Chemical Society, 135(10), 3971-3982 (2013-02-26)
Si-H activation in triethyl- and triarylsilanes by a square-planar pyridine-diimine iridium complex with a terminal nitrido unit leads to the corresponding silyl amido complexes, which were unambiguously characterized by X-ray crystallography. Based on detailed combined kinetic and theoretical studies (DFT)
Tatyana N Sevastyanova et al.
Molecular pharmacology, 86(5), 492-504 (2014-08-13)
Metabotropic glutamate receptors (mGluRs) function as dimers. Recent work suggests that mGluR1 and mGluR5 may physically interact, but the nature and functional consequences of this relationship have not been addressed. In this study, the functional and pharmacological consequences of this
Prasanta Das et al.
The Journal of chemical physics, 138(5), 054307-054307 (2013-02-15)
With infrared absorption spectra we investigated the reaction between Cl atom and pyridine (C(5)H(5)N) in a para-hydrogen (p-H(2)) matrix. Pyridine and Cl(2) were co-deposited with p-H(2) at 3.2 K; a planar C(5)H(5)N-Cl(2) complex was identified from the observed infrared spectrum
C-demethylation and methyl group migration during O-demethylation with pyridine hydrochloride
JHP and T
Journal of the Chemical Society. Chemical Communications, 914-915 (1972)
Kalina Szteyn et al.
Pain, 156(11), 2364-2372 (2015-07-15)
Glutamate serves as the primary excitatory neurotransmitter in the nervous system. Previous studies have identified a role for glutamate and group I metabotropic receptors as targets for study in peripheral inflammatory pain. However, the coordination of signaling events that transpire
V Divya et al.
Dalton transactions (Cambridge, England : 2003), 42(34), 12317-12323 (2013-07-16)
Our recently developed Eu(3+) coordination compound, Eu(pfppd)3(tpy) [where Hpfppd = 4,4,5,5,5-pentafluoro-3-hydroxy-1-(phenanthren-3-yl)pentanedione and tpy = 2,2':6,6''-terpyridine] exhibits significant quantum yield (Φoverall = 41%) and long (5)D0 lifetime (880 μs) values under biologically relevant pH conditions (pH = 7.4) when excited with
V Subbaramaiah et al.
Journal of hazardous materials, 248-249, 355-363 (2013-02-19)
Cerium supported SBA-15 (Ce/SBA-15) was synthesized by two-step synthesis method in acidic medium. It was further characterized by various characterization techniques such as X-ray diffraction, field-emission scanning electron microscopy, Fourier transform infrared spectroscopy and N2 adsorption-desorption pore size distribution analysis.
Jipan Yu et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(13), 4271-4277 (2013-02-13)
Efficient copper-catalyzed aerobic oxidative C-H and C-C functionalization of 1-[2-(arylamino)aryl]ethanones leading to acridones has been developed. The procedure involves cleavage of aromatic C-H and acetyl C-C bonds with intramolecular formation of a diarylketone bond. The protocol uses inexpensive Cu(O2CCF3)2 as
Fei Tian et al.
Journal of environmental sciences (China), 25(11), 2299-2305 (2014-02-21)
A series of precious metals catalysts (M/TiO2, M = Ru, Rh, Pd, Ag, Ir, Pt or Au) were prepared by a light deposition method and the synergistic photocatalytic degradations of pyridine (20 mg/L) under UV irradiation (365 nm) using M/TiO2
Nathalie Ségaud et al.
Inorganic chemistry, 52(2), 691-700 (2013-01-11)
We report the synthesis, characterization, and solution chemistry of a series of new Fe(II) complexes based on the tetradentate ligand N-methyl-N,N'-bis(2-pyridyl-methyl)-1,2-diaminoethane or the pentadentate ones N,N',N'-tris(2-pyridyl-methyl)-1,2-diaminoethane and N,N',N'-tris(2-pyridyl-methyl)-1,3-diaminopropane, modified by propynyl or methoxyphenyltriazolyl groups on the amino functions. Six of
Yuya Kodama et al.
Journal of medicinal chemistry, 56(22), 9342-9350 (2013-11-01)
In this study, we developed an assignment-free approach for rapid identification of ligand-binding sites in target proteins by using NMR. With a sophisticated cell-free stable isotope-labeling procedure that introduces (15)N- or (13)C-labels to specific atoms of target proteins, this approach
Jacky Pouessel et al.
Dalton transactions (Cambridge, England : 2003), 42(14), 4859-4872 (2013-02-02)
The synthesis of a new linear bis-tetraamine ligand L1, based on two 1,4,8,11-tetraazaundecane units grafted at the 2 and 6 positions of a pyridinyl linker substituted by an anthracenyl fluorophore in the para position, is described and anion complexation studies
Hani Nasser Abdelhamid et al.
Analytica chimica acta, 767, 104-111 (2013-03-05)
Application of two new series of ionic liquid matrices (ILMs) based on the two most predominantly used conventional organic matrices (Sinapinic acid and 2,5-DHB) in conjugation with various bases (aniline (ANI), dimethyl aniline (DMANI), diethylamine (DEA), dicyclohexylamine (DCHA), pyridine (Pyr)
Jin Wang et al.
Journal of nanoscience and nanotechnology, 13(1), 523-528 (2013-05-08)
The low bandgap 3-hexylthiophene/pyridine copolymers (P3HT/PY) were synthesized and the composites of P3HT/PY and CdSe QDs were prepared. The characterization are performed with 1H NMR, UV-vis, PL, TEM, XPS and cyclic voltammetry (CV). The results show that the P3HT/PY copolymers
Harry Adams et al.
Journal of the American Chemical Society, 135(5), 1853-1863 (2013-01-31)
The association constants for a family of 96 closely related zinc porphyrin-pyridine ligand complexes have been measured in two different solvents, toluene and 1,1,2,2-tetrachloroethane (TCE). The zinc porphyrin receptors are equipped with phenol side arms, which can form intramolecular H-bonds
Suazette Reid Mooring et al.
ChemMedChem, 8(4), 622-632 (2013-03-08)
The interaction of CXCR4 with CXCL12 (SDF-1) plays a critical role in cancer metastasis by facilitating the homing of tumor cells to metastatic sites. Based on our previously published work on CXCR4 antagonists, we have synthesized a series of aryl
Fang Zhang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 106, 242-246 (2013-02-12)
Fluorescence properties of C60 nanoparticles produced by sonication in pyridine have been systematically investigated. The fluorescence emission of C60 is dependent on the particle size. A red shift of emission maximum from 424 to 468 nm originates from the average
Chun-Jen Chen et al.
Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 56(1), 120-126 (2014-12-06)
Noninvasive determination of amyloid-β peptide (Aβ) deposition has important significance for early diagnosis and medical intervention for Alzheimer's disease (AD). In the present study, we investigated the availability of radiolabeled DRM106 ((123/125)I-DRM106 [6-iodo-2-[4-(1H-3-pyrazolyl)phenyl]imidazo[1,2-a]pyridine]), a compound with sufficient affinity for the
Bidyut Akhuli et al.
Dalton transactions (Cambridge, England : 2003), 42(16), 5818-5825 (2013-03-05)
A pentafluorophenyl (–C6F5) substituted 3-pyridyl urea, L(1), is explored extensively to demonstrate SO4(2-) binding exclusively via second sphere coordination in the cavity of a 1D polymeric self-assembly of L(1), selectively assisted by Cu2+. A single crystal X-ray diffraction study depicts
Huawen Huang et al.
Organic letters, 15(24), 6254-6257 (2013-11-23)
A rapid and environmentally friendly conversion of pyridine to imidazo[1,2-a]pyridines has been developed via copper-catalyzed aerobic dehydrogenative cyclization with ketone oxime esters.
Synthetic studies on pseudo-dimeric Lycopodium alkaloids: total synthesis of complanadine B.
James N Newton et al.
Angewandte Chemie (International ed. in English), 52(6), 1726-1730 (2013-01-12)
Nelu Grinberg et al.
Journal of pharmaceutical and biomedical analysis, 75, 1-6 (2013-01-15)
Dimethyl sulfate (DMS) is frequently used in pharmaceutical manufacturing processes as an alkylating agent. Trace levels of DMS in drug substances should be carefully monitored since the compound can become an impurity which is genotoxic in nature. Derivatization of DMS
Suman Kundu et al.
Dalton transactions (Cambridge, England : 2003), 42(13), 4586-4601 (2013-01-29)
o-Imino-p-R'-benzosemiquinone anion radical (L(R')(IS)(˙-)) complexes of oxidovanadium(IV) of type [(L(1)(R-))(VO(2+))(L(R')(IS)(˙-))] (R = H, R' = H, 1; R = H, R' = -CMe(3), 2; R = -CMe(3), R' = H, 3 and R = -CMe(3), R' = -CMe(3), 4) incorporating
Demethylation of methyl aryl ethers using pyridine hydrochloride in solvent-free conditions under microwave irradiation.
Kulkarni PP, et al.
J. Chem. Res. Synop., 6, 394-395 (1999)
Jan Lippe et al.
The Journal of organic chemistry, 78(18), 9013-9020 (2013-09-05)
The binding motifs found in the crystal structures of complexes formed between artificial receptors and monosaccharides, reported previously by our group, have inspired us to design new macrocyclic and acyclic receptors, which were expected to form strong 1:1 complexes with
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