Synthesis and functional evaluation of chiral dendrimer-triamine-coordinated Gd complexes with polyaminoalcohol end groups as highly sensitive MRI contrast agents
作者:Yuka Miyake、Yu Kimura、Naomi Orito、Hirohiko Imai、Tetsuya Matsuda、Akio Toshimitsu、Teruyuki Kondo
DOI:10.1016/j.tet.2015.04.050
日期:2015.7
Novel chiral dendrimer-triamine-coordinated Gd complexes with polyaminoalcohol end groups were synthesized and shown to have longitudinal relaxivity (r1) values 5 times higher than that of clinically used Gd-DTPA. The affinities of Gd-4a and Gd-4b for bovine serum albumin (BSA), respectively, were estimated by a quartz crystal microbalance (QCM) measurement. The amino groups of the dendrimer were then
合成了具有聚氨基醇端基的新型手性树状聚合物-三胺配位的Gd配合物,其纵向弛豫度(r 1)值比临床使用的Gd-DTPA高5倍。Gd- 4a和Gd- 4b分别对牛血清白蛋白(BSA)的亲和力是通过石英晶体微量天平(QCM)测量来估计的。然后将树状聚合物的氨基与PEG缀合。与PEG的结合强烈影响了其在T 1加权MRI中衰减信号的能力。