The syntheses of DTPA-bis(amide) conjugates of phosphonated cyclohexane moieties (5a-d) and their Gd(III) complexes of the type $[Gd(L)(H_2O)]\cdot}nH_2O$ (6a-d; L = 5a-d) are described. All new compounds have been characterized by microanalysis and spectroscopic techniques. High $r_1$ relaxivities of aqueous solutions of 6a-d are observed to be in the range of $10.7-18.3\;mM^-1}sec^-1}$, which compare much better than that of $Omniscan^(R)}$ ($r_1=3.90\;mM^-1}sec^-1}$).
本文描述了
磷化
环己烷部分(5a-d)的
DTPA-双(酰胺)共轭物及其
$[Gd(L)(H_2O)]\cdot}nH_2O$(6a-d;L = 5a-d)型 Gd(III) 复合物的合成。所有新化合物均通过微量分析和光谱技术进行了表征。观察到 6a-d
水溶液的高
$r_1$ 弛豫率在
$10.7-18.3\;mM^-1}sec^-1}$ 范围内,比
$Omniscan^(R)}$(
$r_1=3.90\;mM^-1}sec^-1}$)的弛豫率要好得多。