Showing 1-30 of 64 results for "252565"
Gemma O'Donnell et al.
Journal of natural products, 72(3), 360-365 (2008-12-20)
From Allium stipitatum, three pyridine-N-oxide alkaloids (1-3) possessing disulfide functional groups were isolated. The structures of these natural products were elucidated by spectroscopic means as 2-(methyldithio)pyridine-N-oxide (1), 2-[(methylthiomethyl)dithio]pyridine-N-oxide (2), and 2,2'-dithio-bis-pyridine-N-oxide (3). The proposed structure of 1 was confirmed by...
David M Rubush et al.
Journal of the American Chemical Society, 134(33), 13554-13557 (2012-08-09)
The desymmetrization of p-peroxyquinols using a Brønsted acid-catalyzed acetalization/oxa-Michael cascade was achieved in high yields and selectivities for a variety of aliphatic and aryl aldehydes. Mechanistic studies suggest that the reaction proceeds through a dynamic kinetic resolution of the peroxy...
Ute F Röhrig et al.
Journal of medicinal chemistry, 53(3), 1172-1189 (2010-01-09)
Indoleamine 2,3-dioxygenase (IDO) is an important therapeutic target for the treatment of diseases such as cancer that involve pathological immune escape. We have used the evolutionary docking algorithm EADock to design new inhibitors of this enzyme. First, we investigated the...
Qi-Pin Qin et al.
European journal of medicinal chemistry, 92, 302-313 (2015-01-13)
[Pt(Q)2] (1) and [Pt(MQ)2] (2) exhibited enhanced cytotoxicity against BEL-7404, Hep-G2, NCI-H460, T-24, A549 tumor cells but low cytotoxicity on normal HL-7702 cells. 1 and 2 could cause the cell cycle arrest in G2 and S phase, respectively. While pifithrin-α...
Meng Zhang et al.
Inorganic chemistry, 51(21), 11315-11323 (2012-10-09)
An artificial peptide with three pendant hydroxyquinoline (hq) ligands on a palindromic backbone was designed and used to form multimetallic assemblies. Reaction of the tripeptide with zinc acetate led to a highly fluorescent tripeptide duplex with three Zn(II) coordinative cross-links....
Han Yao et al.
Journal of pharmaceutical and biomedical analysis, 117, 232-239 (2015-09-18)
L-asparaginase is an effective anti-tumor agent for acute lymphoblastic leukemia. This work presents the development of an activity determination of L-ASNase preparations for pharmaceutical quality control purposes, in accordance with analytical Quality by Design principles. Critical method attributes, the absorbance...
Sunil S Patil et al.
Acta poloniae pharmaceutica, 69(4), 679-686 (2012-08-11)
Mixed ligand complexes of dioxouranium(VI) of the type [UO2(Q)(L)-2H2O] have been synthesized using 8-hydroxyquinoline (HQ) as a primary ligand and N- and/or O- donor amino acids (HL) such as L-lysine, L-aspartic acid and L-cysteine as secondary ligands. The metal complexes...
Jane Greeff et al.
Bioorganic & medicinal chemistry, 20(2), 809-818 (2011-12-27)
Neurodegenerative disorders are frequently associated with increased oxidative damage to the brain as a result of free radicals produced by cellular respiration. The onset and progression of neurodegeneration may therefore be curbed by exogenous hydrogen-donating antioxidant moieties such as the...
Yongchun Liu et al.
Chemistry & biodiversity, 9(8), 1533-1544 (2012-08-18)
8-Hydroxyquinoline-7-carboxaldehyde (8-HQ-7-CA), Schiff-base ligand 8-hydroxyquinoline-7-carboxaldehyde benzoylhydrazone, and binuclear complexes [LnL(NO(3))(H(2)O)(2)](2) were prepared from the ligand and equivalent molar amounts of Ln(NO(3))·6H(2)O (Ln=La(3+), Nd(3+), Sm(3+), Eu(3+), Gd(3+), Dy(3+), Ho(3+), Er(3+), Yb(3+), resp.). Ligand acts as dibasic tetradentates, binding to Ln(III) through...
Thiloka C Ariyasena et al.
Journal of chromatography. A, 1361, 240-254 (2014-08-30)
Retention factors on several columns and at various temperatures using gas chromatography and from reversed-phase liquid chromatography on a SunFire C18 column with various mobile phase compositions containing acetonitrile, methanol and tetrahydrofuran as strength adjusting solvents are combined with liquid-liquid...
María Isabel Fernández-Bachiller et al.
Journal of medicinal chemistry, 53(13), 4927-4937 (2010-06-16)
Tacrine and PBT2 (an 8-hydroxyquinoline derivative) are well-known drugs that inhibit cholinesterases and decrease beta-amyloid (Abeta) levels by complexation of redox-active metals, respectively. In this work, novel tacrine-8-hydroxyquinoline hybrids have been designed, synthesized, and evaluated as potential multifunctional drugs for...
Mikako Ogawa et al.
Nuclear medicine and biology, 42(3), 299-304 (2014-12-24)
Previously, we reported a probe for imaging of atherosclerotic plaques: (111)In-labeled liposomes. Liposomes were modified with phosphatidylserine (PS) because macrophages recognize PS and phagocytize apoptotic cells in plaques. PS modification was successful and we could visualize atherosclerotic plaques by single-photon...
P Stephen Patrick et al.
Stem cell research & therapy, 11(1), 256-256 (2020-06-27)
MSCTRAIL is a cell-based therapy consisting of human allogeneic umbilical cord-derived MSCs genetically modified to express the anti-cancer protein TRAIL. Though cell-based therapies are typically designed with a target tissue in mind, delivery is rarely assessed due to a lack...
M Luísa Ramos et al.
Dalton transactions (Cambridge, England : 2003), 41(40), 12478-12489 (2012-09-08)
Multinuclear ((1)H, (13)C and (27)Al) magnetic resonance spectroscopy (1D and 2D), DFT calculations and fluorescence have been used to study the complexation of 8-hydroxyquinoline-5-sulfonate (8-HQS) with Al(III). The study combines the high sensitivity of luminescence techniques, the selectivity of multinuclear...
Erik Serrao et al.
Journal of medicinal chemistry, 56(6), 2311-2322 (2013-03-01)
On the basis of an initial molecular modeling study suggesting the favorable binding of the "privileged" fragment 8-hydroxyquinoline with HIV-1 integrase (IN) at the IN-lens epithelium-derived growth factor/p75 (LEDGF/p75) interface , we developed a set of modified 8-hydroxyquinoline fragments demonstrating...
Steve Comby et al.
Inorganic chemistry, 51(19), 10158-10168 (2012-09-15)
A novel near-infrared (NIR) emissive lanthanide-based zinc sensor was designed, based on the self-assembly in aqueous solution between the nonemissive coordinatively unsaturated Yb(III) cyclen complex 2·Yb and the sulfonated 8-hydroxyquinoline (8-HQS) chromophore, which was employed as a sensitizing antenna. The...
D Hutzler et al.
Dermatosen in Beruf und Umwelt. Occupation and environment, 36(3), 86-90 (1988-05-01)
Evaluation of our standardized test results from 1972 to 1983 indicated Vioform allergies in 1.2% of all cases and Sterosan allergies in 1.1%. Our results are within the spectrum found in the literature for Vioform between 0.3 and 5.1% and...
P W Yawalkar et al.
Luminescence : the journal of biological and chemical luminescence, 28(1), 63-68 (2012-06-27)
The tris(8-hydroxyquinoline)-aluminium complex is the most important and widely studied as electron transporting and green light emitting material. Alq(3) and Tb(x) Al((1-x)) q(3) have been synthesized (where x = 0.1, 0.3, 0.5, 0.7 and 0.9) and blended films of Alq(3)...
Ping Nan et al.
Environmental toxicology and pharmacology, 35(3), 434-443 (2013-03-12)
This study was a preliminary step in evaluating the genotoxic effects of 8-hydroxylquinoline (8-HOQ) in loach (Misgurnus anguillicaudatus) using the micronucleus, comet and RAPD assays. In the micronucleus test and comet assay, the micronuclei rate (%) and three comet parameters...
Bhimashankar Mitkari et al.
Experimental neurology, 239, 158-162 (2012-10-13)
Cell therapies from various sources have been under intense research in stroke. Efficient homing of the cells to the injured brain without complications is necessary to realize the therapeutic potential of cell therapy. Intra-arterial (IA) infusion of cells bypasses the...
Jennifer A Jacobsen et al.
Journal of medicinal chemistry, 54(2), 591-602 (2010-12-30)
Fragment-based lead design (FBLD) has been used to identify new metal-binding groups for metalloenzyme inhibitors. When screened at 1 mM, a chelator fragment library (CFL-1.1) of 96 compounds produced hit rates ranging from 29% to 43% for five matrix metalloproteases...
Yuji Kawai et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 31(11), 1177-1182 (2015-11-13)
An open-tubular capillary chromatography system (tube radial distribution chromatography, TRDC) was developed using a ternary solvent (water-acetonitrile-ethyl acetate; volume ratio, 3:8:4) containing 10 mmol L(-1) 8-quinolinol for the separation of nitrate, chloride, and sulfate compounds of Ni(II), Al(III), and Fe(III)....
Jitka Novakova et al.
Journal of medical microbiology, 63(Pt 12), 1663-1669 (2014-10-10)
The major risk factor for Clostridium difficile infection (CDI) is the use of antibiotics owing to the disruption of the equilibrium of the host gut microbiota. To preserve the beneficial resident probiotic bacteria during infection treatment, the use of molecules...
Yousef Fazaeli et al.
Journal of fluorescence, 22(5), 1263-1270 (2012-06-15)
A series of 8-hydroxyquinoline complexes of tin, Q(2)SnCl(2) (Q = 2-methyl-8-hydroxyquinoline, 8-hydroxyquinoline, 5,7-dibromo-8-hydroxyquinoline, 5-chloro-8-hydroxyquinoline, 5,7-dichloro-8-hydroxyquinoline and 5-nitro-8-hydroxyquinoline) were prepared by reacting stannous dichloride with 8-hydroxyquinoline and its derivatives. All complexes were characterized by elemental analysis, mass spectrometry and infrared, UV-vis...
Emme C K Lin et al.
Bioorganic & medicinal chemistry letters, 22(2), 868-871 (2012-01-06)
AX10185, the phenyl amide of xanthurenic acid, was found to be a sub-100nM inhibitor of Lp-PLA(2). However, in the presence of EDTA the inhibitory activity of AX10185 was extinguished while the enzymatic activity of Lp-PLA(2) did not change. Subsequent metal...
Nicolas Audic et al.
Organic & biomolecular chemistry, 11(5), 773-780 (2012-12-18)
Novel 2,3-diaminopropionic acid-based molecules were synthesised and tested successfully as glyoxal/methylglyoxal scavengers and as AGE inhibitors. Addition of an 8-hydroxyquinoline moiety led to an increase of the overall activity. The compounds tested in this study were also proved to be...
Lingling Zhao et al.
Journal of hazardous materials, 239-240, 206-212 (2012-09-22)
A dual-cloud point extraction (d-CPE) procedure has been developed for simultaneous pre-concentration and separation of heavy metal ions (Cd2+, Co2+, Ni2+, Pb2+, Zn2+, and Cu2+ ion) in water samples by inductively coupled plasma optical emission spectrometry (ICP-OES). The procedure is...
Wenqi Sun et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 106, 275-283 (2013-02-19)
The title molecule (E)-2-[2-(2,6-dichlorophenyl)ethenyl]-8-hydroxyquinoline (DPEQ) was synthesized and characterized by FT-IR, UV-vis, NMR spectroscopy. The molecular geometry, vibrational frequencies and gauge independent atomic orbital (GIAO) 1H and 13C NMR chemical shift values of the compound in the ground state have...
M Luísa Ramos et al.
Dalton transactions (Cambridge, England : 2003), 42(10), 3682-3694 (2013-01-10)
Multinuclear ((1)H, (13)C and (71)Ga) magnetic resonance spectroscopy (1D and 2D), DFT calculations and luminescence techniques have been used to study 8-hydroxyquinoline-5-sulfonate (8-HQS) and its complexes with Ga(III) in aqueous solutions. The study combines the high sensitivity of luminescence techniques...
Preconcentration of trace elements in sea water by complexation with 8-hydroxyquinoline and adsorption on C18 bonded silica gel.
Watanabe H, et al.
Analytical Chemistry, 53(4), 738-739 (1981)

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