已经合成了一系列 1,4,8,11-四氮杂双环 [6.6.2] 十六烷配体,包括母体化合物、N,N'-二烷基变体和第一个 N,N'-双侧悬臂衍生物通过一种简短、高效且概念新颖的方法。已经制备了它们的铜 (II) 配合物,其中四种通过 X 射线衍射进行了结构表征。在所有四种配合物中,发现交叉桥接的四胺配体是顺式折叠的,使用所有四个氮孤对在其分子裂缝内配位金属阳离子。对于三个配合物,发现了理想化的四角锥体和三角双锥体配位之间的几何结构,而在双悬臂交叉桥接仙客来的配合物中发现了扭曲的八面体铜配位。
Aspartate-Based CXCR4 Chemokine Receptor Binding of Cross-Bridged Tetraazamacrocyclic Copper(II) and Zinc(II) Complexes
作者:Randall D. Maples、Amy N. Cain、Benjamin P. Burke、Jon D. Silversides、Ryan E. Mewis、Thomas D'huys、Dominique Schols、Douglas P. Linder、Stephen J. Archibald、Timothy J. Hubin
DOI:10.1002/chem.201601468
日期:2016.8.26
bis‐tetraazamacrocyclic metal complexes are high‐affinity CXCR4 antagonists. Here, we present the synthesis of Cu2+ and Zn2+ acetate complexes of six cross‐bridged tetraazamacrocycles to mimic their coordination interaction with the aspartate side chains known to bind them to CXCR4. X‐ray crystalstructures for three new Cu2+ acetate complexes and two new Zn2+ acetate complexes demonstrate metal‐ion‐dependent
Acetate as a model for aspartate-based CXCR4 chemokine receptor binding of cobalt and nickel complexes of cross-bridged tetraazamacrocycles
作者:Amy N. Cain、TaRynn N. Carder Freeman、Kimberly D. Roewe、David L. Cockriel、Travis R. Hasley、Randall D. Maples、Elisabeth M. A. Allbritton、Thomas D'Huys、Tom van Loy、Benjamin P. Burke、Timothy J. Prior、Dominique Schols、Stephen J. Archibald、Timothy J. Hubin
DOI:10.1039/c8dt04728f
日期:——
linked to the chemokine receptor CXCR4. High-affinity CXCR4 antagonist transitionmetalcomplexes of configurationally restricted bis-tetraazamacrocyclic ligands have been identified in previous studies. Recently synthesised and structurally characterised Co2+/Co3+ and Ni2+ acetate complexes of mono-macrocycle cross-bridged ligands have been used to mimic their known coordination interaction with the
Iron(III) Complexes with Cross‐Bridged Cyclams: Synthesis and Use in Alcohol and Water Oxidation Catalysis
作者:Alfonso Annunziata、Roberto Esposito、Giordano Gatto、Maria Elena Cucciolito、Angela Tuzi、Alceo Macchioni、Francesco Ruffo
DOI:10.1002/ejic.201800451
日期:2018.7.31
A class of iron(III) complexes containing diversely substituted cross‐bridged cyclams (1‐R,R′: 1‐Me,Me, 1‐Me,Et, 1‐Et,Et, 1‐Me,Bn, 1‐Bn,Bn) has been prepared and characterized. (1‐R,R′) complexes catalyze the oxidation of alcohols to ketones in green conditions, by using tert‐butylhydroperoxide as the oxidant in aqueous solutions. They also exhibit catalytic activity in water oxidation (WO) to molecular
一类铁(III)络合物,包含不同取代的跨桥仙客来(1-R,R':1-Me,Me,1-Me,Et,1-Et,Et,1-Me,Bn,1-Bn ,Bn)已经准备好并进行了表征。(1-R,R')络合物通过在水溶液中使用叔丁基氢过氧化物作为氧化剂在绿色条件下催化醇氧化为酮。它们还表现出水氧化(WO)到NaIO 4驱动的分子氧的催化活性,并且发现结果取决于R取代基的空间位阻。使用1-Me,Et(TOF = 1.4 min –1且TON = 111)获得了金属中心的可及性和保护方面的最佳折衷方案。
Oxoiron(IV) Complex of the Ethylene-Bridged Dialkylcyclam Ligand Me<sub>2</sub>EBC
作者:Jason England、Jai Prakash、Matthew A. Cranswick、Debasish Mandal、Yisong Guo、Eckard Münck、Sason Shaik、Lawrence Que
DOI:10.1021/acs.inorgchem.5b00861
日期:2015.8.17
dialkylcyclam ligand, [FeIV(O)(Me2EBC)(NCMe)]2+ (2; Me2EBC = 4,11-dimethyl-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane). Complex 2 has been characterized by UV–vis, 1H NMR, resonance Raman, Mössbauer, and X-ray absorption spectroscopy as well as electrospray ionization mass spectrometry, and its properties have been compared with those of the closely related [FeIV(O)(TMC)(NCMe)]2+ (3; TMC = 1,4,8,11-tetramethyl-1
The present invention relates to pharmaceutical compositions and methods for using said compositions which comprise:
a) an effective amount of a magnetic resonance imaging agent, for example, a complex having the formula:
1
b) the balance carriers and other adjunct ingredients.