METHODS AND COMPOUNDS FOR ENHANCING CONTRAST IN MAGNETIC RESONANCE IMAGING (MRI)
申请人:Brock University
公开号:US20160362434A1
公开(公告)日:2016-12-15
The present application relates to methods and compounds for enhancing contrast in magnetic resonance imaging. The methods comprise administering compounds of Formula I(a) or I(b) to a subject and obtaining a magnetic resonance image of the subject. The present application also relates to methods of preparing compounds of the Formula I(a) as well as intermediate compounds used in such a method of preparation.
The first 1-D cyanide-bridged complex assembled from a covalently tethered [CoII(N3O2)Cl(OH2)]22+ macrocyclic building block
作者:Roland T. Acha、Emma L. Gavey、Jian Wang、Jeremy M. Rawson、Melanie Pilkington
DOI:10.1016/j.poly.2014.04.001
日期:2014.7
structure was determined by X-ray diffraction. The polymer comprises two covalently tethered pentagonal bipyramidal Co(II) macrocycles both axially coordinated to a single [Fe(CN)6]4− unit in a zig-zag arrangement, highlighting the versatility of this family of dimeric buildingblocks for the self-assembly of higher order structures. Magnetic studies on (2) reveal that the ions exist as isolated S = 3/2
Methods and compounds for enhancing contrast in magnetic resonance imaging (MRI)
申请人:Brock University
公开号:US10377783B2
公开(公告)日:2019-08-13
The present application relates to methods and compounds for enhancing contrast in magnetic resonance imaging. The methods comprise administering compounds of Formula I(a) or I(b) to a subject and obtaining a magnetic resonance image of the subject. The present application also relates to methods of preparing compounds of the Formula I(a) as well as intermediate compounds used in such a method of preparation.
Rational Design of a Covalently Tethered Dinuclear [Mn<sup>II</sup>(N<sub>3</sub>O<sub>2</sub>)Cl(OH<sub>2</sub>)]<sub>2</sub><sup>2+</sup> Macrocyclic Building Block: Synthesis, Structure, and Magnetic Properties
作者:Jian Wang、Brianna Slater、Antonio Alberola、Helen Stoeckli-Evans、Fereidoon S. Razavi、Melanie Pilkington
DOI:10.1021/ic062212o
日期:2007.6.1
A novel dimeric Mn-II complex [Mn(N3O2)]Cl(OH2)}(2)2Cl (2) of a macrocyclic Schiff base ligand derived from the condensation of 2,2', 6,6'-tetraacetyl-4,4'-bipyridine with 3,6-dioxaoctane-1,8-diamine in the presence of a stoichiometric amount of MnII has been prepared and characterized. The X-ray analysis of 2 reveals that the two Mn ions assume a pentagonal-bipyramidal geometry, with the macrocycle occupying the pentagonal plane and the axial positions being filled by a halide ion and a H2O molecule. Magnetic susceptibility data (2-270 K) reveal the occurrence of weak antiferromagnetic interactions between covalently tethered Mn-II-Mn-II dimeric units.
Dinuclear Seven-Coordinate Mn(II) Complexes: Effect of Manganese(II)-Hydroxo Species on Water Exchange and Superoxide Dismutase Activity
作者:Dominik Lieb、Felix C. Friedel、Mirza Yawer、Achim Zahl、Marat M. Khusniyarov、Frank W. Heinemann、Ivana Ivanović-Burmazović
DOI:10.1021/ic301714d
日期:2013.1.7
measurements (varying temperature and pressure), and by determination of SOD activity. The two manganese(II) centers within the dinuclear structures behave independently from each other and similarly to the manganese centers in the corresponding mononuclear complexes. However, the dinuclear amine complex possesses increased complex stability and acidity of the coordinated water molecules (pKa2 = 8.92) in
通过进行X射线结构分析,已经合成并表征了两种分别具有亚胺或胺官能团的具有两个亚氨基或胺官能团的五氮杂七环亚单元的二核七坐标锰(II)配合物, SQUID,电位计,电子喷雾电离质谱(ESI-MS),电化学和17 O NMR水交换测量(温度和压力变化),并通过测定SOD活性来确定。双核结构中的两个锰(II)中心的行为彼此独立,并且与相应的单核络合物中的锰中心相似。但是,双核胺络合物具有更高的络合物稳定性和配位水分子的酸度(p与相应的单核类似物相比,K a2 = 8.92)。这使我们能够观察到稳定的反式在水溶液中,并研究-Aqua-羟-锰(II)物质的第一次的反式的羟基的-效应上对一般的任何二价金属中心的水不稳定性。所观察到的羟基配体的反乳化作用远小于水合羟基-M(III)三价金属物质的情况。这是否是trans的一般属性-aqua-hydroxo-M(II)物种,或者它是否特定于Mn(II)和/