Design and synthesis of site directed maleimide bifunctional chelators for technetium and rhenium
作者:Sangeeta Ray Banerjee、Paul Schaffer、John W. Babich、John F. Valliant、Jon Zubieta
DOI:10.1039/b507096a
日期:——
coordination of the M(CO)(3)}(+) core (M = Tc, Re), and a thiol reactive maleimide group has been prepared conveniently and in high yield under Mitsunobu reaction conditions by the coupling of an appropriate alcohol derivative with maleimide. The rhenium complexes [Re(CO)(3)(Lx)]Br (x= 1-9) were prepared in good yields from the reactions of the ligands and (NEt(4))(2)[Re(CO)(3)Br(3)] in refluxing methanol
一个新的异双功能连接子家族(L1-L9),其末端包含一个三齿供体集合,用于协调M(CO)(3)}(+)核(M = Tc,Re)和硫醇反应性马来酰亚胺通过将适当的醇衍生物与马来酰亚胺偶联,在Mitsunobu反应条件下方便且高收率地制备了该基团。the配合物[Re(CO)(3)(Lx)] Br(x = 1-9)由配体与(NEt(4))(2)[Re(CO)( 3)Br(3)]在回流的甲醇中。通过(1)H和(13)C NMR,IR和ESI-MS表征配体及其Re配合物。通过X射线晶体学对配体L4和[Re(CO)(3)(L5)] Br进行了结构表征。配合物[Re(CO)(3)(Lx)] Br(x = 4-6)溶液的光激发引起室温下强烈且长时间的发光(荧光寿命约为16微米)。在室温下,在磷酸盐缓冲液(PBS,pH 7.4)中,配体及其Re配合物在顺丁烯二酰亚胺连接基上与肽和蛋白质的巯基基团平滑反应,