Rapid synthesis of cross-bridged cyclam chelators for copper(II) complex formation
作者:Jon D. Silversides、Benjamin P. Burke、Stephen J. Archibald
DOI:10.1016/j.crci.2013.02.013
日期:2013.6
Abstract Copper(II) complexes of 1,4,8,11-tetraazabicyclo[6.6.2]hexadecane (cross-bridged cyclam) derived chelators show high kinetic stability relative to less rigid non-bridged azamacrocyclic chelators and have applications as radiopharmaceuticals in PET imaging. Rapid synthesis of two novel bis-benzyl cross-bridged cyclam derivatives was achieved in 24 h compared to the typical synthesis times,
摘要 1,4,8,11-四氮杂双环[6.6.2]十六烷(交叉桥接环己基酰胺)衍生螯合剂的铜(II)配合物相对于刚性较低的非桥连氮杂大环螯合剂显示出较高的动力学稳定性,并在PET中用作放射性药物成像。与典型的合成时间(14 到 30 天)相比,在 24 小时内实现了两种新型双苄基交叉桥接环链菌素衍生物的快速合成。报告了铜 (II) 与 1,3-二溴苄基和甲苯基衍生物的配合物的 X 射线晶体结构,揭示了不同的配体配位环境。两种结构均显示四氮杂大环的四齿配位,1,3-二溴苄基衍生物沿 N-Cu-N 轴轴向伸长(Cu-N 距离:轴向 av. 2.48(8) A,赤道 av. 2.081(7) A )。