CN
Search Within
259160
应用筛选条件
关键词:'259160'
显示 1-30 共 39 条结果 关于 "259160" 范围 论文
Riccardo Ferdani et al.
Dalton transactions (Cambridge, England : 2003), 41(7), 1938-1950 (2011-12-16)
A new class of cross-bridged cyclam-based macrocycles featuring phosphonate pendant groups has been developed. 1,4,8,11-tetraazacyclotetradecane-1,8-di(methanephosphonic acid) (CB-TE2P, 1) and 1,4,8,11-tetraazacyclotetradecane-1-(methanephosphonic acid)-8-(methanecarboxylic acid) (CB-TE1A1P, 2) have been synthesized and have been shown to readily form neutral copper(II) complexes at room temperature
Synthesis, characterization, DNA binding, topoisomerase I inhibition and antimicrobial activity of four novel zinc (II) fenamates.
Smolkova R, et al.
Polyhedron, 141(17), 230-238 (2018)
A serials of sandwich-like trinuclear and one-dimensional chain cyanide-bridged iron (III)-copper (II) complexes: Syntheses, crystal structures and magnetic properties.
Shi J, et al.
Journal of Solid State Chemistry, 260(17), 59-66 (2018)
Jan Blahut et al.
Inorganic chemistry, 59(14), 10071-10082 (2020-07-08)
In order to develop novel, more efficient, and/or selective contrast agents for magnetic resonance imaging (MRI), different modi operandi are explored as alternatives to water-relaxation enhancement. In this work, cobalt(II/III) complexes of bis(N-trifluoroethyl)cyclam derivatives with two acetate or two phosphonate
Jaeheung Cho et al.
Accounts of chemical research, 45(8), 1321-1330 (2012-05-23)
Metalloenzymes activate dioxygen to carry out a variety of biological reactions, including the biotransformation of naturally occurring molecules, oxidative metabolism of xenobiotics, and oxidative phosphorylation. The dioxygen activation at the catalytic sites of the enzymes occurs through several steps, such
Peter Comba et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(6), 1700-1710 (2012-01-12)
The synthesis and characterization of a novel dinucleating ligand L (L=4,11-dimethyl-1,8-bis{2-[N-(di-2-pyridylmethyl)amino]ethyl}cyclam) and its μ-oxo-bridged diferric complex [(H(2)L){Fe(III)(2)(O)}(Cl)(4)](2+) are reported. This diiron(III) complex is the first example of a truly functional purple acid phosphatase (PAP) mimic as it accelerates the hydrolysis
Luis G Alves et al.
Dalton transactions (Cambridge, England : 2003), 41(47), 14288-14298 (2012-10-09)
Novel Bn(2)Cyclam-based zirconium complexes of the type (Bn(2)Cyclam)Zr(X)(X') (3, X = X' = OPh; 4, X = X' = SPh; 5, X = Cl, X' = O(i)Pr) were synthesized in good yields via metathesis routes involving the reaction of the
Joel Torres-Alacan et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(10), 3043-3055 (2012-02-03)
The photochemistry of iron azido complexes is quite challenging and poorly understood. For example, the photochemical decomposition of [Fe(III)N(3)(cyclam-ac)]PF(6) ([1]PF(6)), where cyclam-ac represents the 1,4,8,11-tetraazacyclotetradecane-1-acetate ligand, has been shown to be wavelength-dependent, leading either to the rare high-valent iron(V) nitrido
Novel Zn (II) complexes with non-steroidal anti-inflammatory ligand, flufenamic acid: Characterization, topoisomerase I inhibition activity, DNA and HSA binding studies.
Smolkova R, et al.
Journal of Inorganic Biochemistry, 177(17), 143-158 (2017)
Michael Schmittel et al.
Chemical communications (Cambridge, England), 48(96), 11730-11732 (2012-10-20)
The two states of a new nanomechanical switch were quantitatively and reversibly populated in several subsequent switching cycles using either Cu(+) or cyclam as chemical inputs. State II was demonstrated to cis-trans isomerise diazastilbene upon irradiation selectively in the presence
Thermally-Triggered Crystal Dynamics and Permanent Porosity in the First Heptatungstate-Metalorganic Three-Dimensional Hybrid Framework.
Martin-Caballero J, et al.
Chemistry?A European Journal , 23(59), 14962-14974 (2017)
Characterization of a macrocyclic end-on peroxido copper complex.
Tobias Hoppe et al.
Angewandte Chemie (International ed. in English), 52(3), 870-873 (2012-11-28)
Yunfei Zhang et al.
Scientific reports, 5, 8172-8172 (2015-02-03)
Copper ions play a vital role in a variety of fundamental physiological processes not only in human beings and plants, but also for extensive insects and microorganisms. In this paper, a novel water-soluble ruthenium(II) complex as a turn-on copper(II) ions
Alexis D Ostrowski et al.
Molecular pharmaceutics, 9(10), 2950-2955 (2012-09-08)
Described are photochemical studies of the nitric oxide precursors, trans-Cr(L)(ONO)(2)(+) (L = cyclam = 1,4,8,11-tetraazacyclotetradecane, CrONO, or L = mac = 5,7-dimethyl-6-anthracenylcyclam, mac-CrONO) encapsulated in phosphatidylcholine liposomes. The liposomes provide a means to maintain a localized high concentration of NO
Anna D Peters et al.
Organic & biomolecular chemistry, 16(35), 6479-6490 (2018-08-30)
A bis(cyclam)-capped cholesterol lipid designed to bind C-X-C chemokine receptor type 4 (CXCR4) was synthesised in good overall yield from 4-methoxyphenol through a seven step synthetic route, which also provided a bis(cyclam) intermediate bearing an octaethyleneglycol-primary amine that can be
Prasenjit Mahato et al.
Inorganic chemistry, 50(9), 4162-4170 (2011-04-01)
Two chromogenic complexes, L.Zn (where L is (E)-4-((4-(1,4,8,11-tetraazacyclotetradecan-1-ylsulfonyl)phenyl)diazenyl)-N,N-dimethylaniline) and its [2]pseudorotaxane form (α-CD.L.Zn), were found to bind preferentially to adenosine triphosphate (ATP), among all other common anions and biologically important phosphate (AMP, ADP, pyrophosphate, and phosphate) ions in aqueous HEPES
Hava Ozay et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 83(1), 525-531 (2011-09-29)
Details of complex formation kinetics are reported for tetrakis(2-hydroxyethyl) substituted cyclen (L(1)) and cyclam (L(2)) with Cu(II) and Co(II). Stopped-flow kinetics and spectroscopic titration methods were employed for the activation parameters and stability constants, respectively. X-ray studies revealed that the
Anika Röhrich et al.
Journal of inorganic biochemistry, 105(6), 821-832 (2011-04-19)
New macrocyclic 1,4,8,11-tetraazacyclotetradecane (cyclam) derivatives with 1, 2 and 4 neurotensin(8-13) units 4, 5 and 7 have been synthesized. Compounds 4 and 5 were prepared by the reaction of non-stabilized neurotensin(8-13) and cyclamtetrapropionic acid 2 using 1-ethyl-3-(3-dimethylaminocarbonyl)carbodiimide-hydrochloride and N-hydroxysulfosuccinimide. The
Mingfeng Yu et al.
Inorganic chemistry, 50(24), 12823-12835 (2011-11-25)
We describe the synthesis of cyclam metal complexes derivatized with amino acids or a tripeptide using a copper(I)-catalyzed Huisgen "click" reaction. The linker triazole formed during the synthesis plays an active coordinating role in the complexes. The reaction conditions do
Jacky Pouessel et al.
Chemistry, an Asian journal, 6(6), 1582-1594 (2011-05-11)
Synthesis and characterization of three new polyamine receptors, composed of a cyclam unit (cyclam=1,4,8,11-tetraazacyclotetradecane) linked by a 2,6-dimethylpyridinyl spacer to the linear polyamines 1,4,8,11-tetraazaundecane (L1py), 1,4,7-triazaheptane (L2py), and to a quaternary ammonium group (L3py(+)), are reported. All receptors form highly
Genevieve E Romanowicz et al.
Redox biology, 1, 332-339 (2013-09-12)
Nitric oxide (NO) is an ubiquitous signaling molecule of intense interest in many physiological processes. Nitric oxide is a highly reactive free radical gas that is difficult to deliver with precise control over the level and timing that cells actually
Jun-ichi Nishigaki et al.
Inorganic chemistry, 51(9), 5173-5187 (2012-03-24)
The Ni(I) tetraazacycles [Ni(dmmtc)](+) and [Ni(mtc)](+), which have methylthioethyl pendants, were synthesized as models of the reduced state of the active site of methyl coenzyme M reductase (MCR), and their structures and redox properties were elucidated (dmmtc, 1,8-dimethyl-4,11-bis{(2-methylthio)ethyl}-1,4,8,11-tetraaza-1,4,8,11-cyclotetradecane; mtc, 1,8-{bis(2-methylthio)ethyl}-1,4,8,11-tetraaza-1,4,8,11-cyclotetradecane).
Allison Ross et al.
Dalton transactions (Cambridge, England : 2003), 41(21), 6408-6418 (2012-04-03)
The configurations of metallocyclams are of interest in relation to protein recognition and anti-HIV activity. We have synthesised four novel zinc(II) complexes with hexyl-Me(2)-cyclam (HMC; 3,14-dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.0(7,12))docosane), 1, and naphthyl-hexyl-Me(2)-cyclam (NHMC; 2,13-bis(1-naphthylmethyl)-5,16-dimethyl-2,6,13,17-tetraazatricyclo(16.4.0.0(7,12))docosane), 2, as ligands. X-ray crystallographic data for Zn(II)-HMC diacetate
Amandine Rolland et al.
Bioorganic & medicinal chemistry letters, 18(1), 169-174 (2007-11-21)
Using SVZ (subventricular zone) tissue explants from one-day-old mice, we investigated the activity of new amino aromatic disulfide analogues and polyazamacrocycles on the migration of SVZ cells (neuroblasts). We found that among the tested analogues, non-peptidic disulfide derivative 8 significantly
Abir El Majzoub et al.
Inorganic chemistry, 50(9), 4029-4038 (2011-04-12)
The coordination properties and the photophysical response of a new cyclam fluorescent probe for Zn(II), [L1H: 1-(benzimidazol-2-ylmethyl]-1,4, 8,11-tetraazacyclotetradecane] toward Cu(II), Zn(II), and Cd(II) are reported. The stability constants of the corresponding complexes were determined by means of potentiometric measurements in
Luís M P Lima et al.
Inorganic chemistry, 51(12), 6916-6927 (2012-06-02)
The syntheses of a new 1,4,7,10-tetraazacyclododecane (cyclen) derivative bearing a picolinate pendant arm (HL1), and its 1,4,8,11-tetraazacyclotetradecane (cyclam) analogue HL2, were achieved by using two different selective-protection methods involving the preparation of cyclen-bisaminal or phosphoryl cyclam derivatives. The acid-base properties
Mingfeng Yu et al.
Chembiochem : a European journal of chemical biology, 14(2), 224-229 (2013-01-11)
We describe a new class of fluorescent reporter and its employment to visualize the biotin/avidin binding interaction. Derivatives of the azamacrocycle cyclam that contain a pendant naphthalimide dye are inherently fluorescent when zinc(II) is coordinated. Introducing a second pendant group--biotin--affords
Fabio G Doro et al.
Dalton transactions (Cambridge, England : 2003), 40(24), 6420-6432 (2011-05-18)
Chemical reactivity, photolability, and computational studies of the ruthenium nitrosyl complex with a substituted cyclam, fac-[Ru(NO)Cl(2)(κ(3)N(4),N(8),N(11)(1-carboxypropyl)cyclam)]Cl·H(2)O ((1-carboxypropyl)cyclam = 3-(1,4,8,11-tetraazacyclotetradecan-1-yl)propionic acid)), (I) are described. Chloride ligands do not undergo aquation reactions (at 25 °C, pH 3). The rate of nitric oxide
Apurba Kalita et al.
Inorganic chemistry, 50(23), 11868-11876 (2011-11-02)
The nitric oxide reactivity of two copper(II) complexes, 1 and 2 with ligands L(1) and L(2), respectively, [L(1) = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, L(2) = 5,5,7-trimethyl-[1,4]-diazepane] have been studied. The copper(II) center in complex 1 was found to be unreactive toward nitric oxide
Thomas Fenton et al.
Dalton transactions (Cambridge, England : 2003), 46(32), 10721-10726 (2017-06-09)
Coupling with robust surfaces is a promising approach to improve the stability and recyclability of highly active molecular catalysts. This study builds on our prior success to deposit a Co(iii) cyclam complex, where cyclam is 1,4,8,11-tetraazacyclotetradecane, on mesoporous silica via
1/2