Triamidetriamine Bearing Macrobicyclic and Macrotricyclic Ligands: Potential Applications in the Development of Copper-64 Radiopharmaceuticals
作者:Kel Vin Tan、Paul A. Pellegrini、Brian W. Skelton、Conor F. Hogan、Ivan Greguric、Peter J. Barnard
DOI:10.1021/ic4024508
日期:2014.1.6
groups. The Cu(II) complex 10 was characterized by elemental analysis, single crystal X-ray crystallography, cyclic voltammetry, and UV–visible absorption spectroscopy. In contrast to the Co(III) complex (9), the Cu(II) center adopts a square planar coordination geometry, with two amine and two deprotonated amido donor groups. Compound 10 exhibited a quasi-reversible, one-electron oxidation, which
描述了一种通用且直接的合成方法,该方法无需模板金属离子即可制备带有三酰胺的石棺六氮杂双环笼状配体。1,1,1-三(氨基乙基)乙烷(tame)与3当量的2-氯乙酰氯反应,生成tris(α-氯酰胺)合成中间体6,当用1,1,1- tris(氨基乙基)乙烷或1,4,7-三氮杂环壬烷提供了两个新的三酰胺三胺隐链配体(分别为7和8)。制备了cryptand 7的Co(III)和Cu(II)配合物。但是,cryptand 8无法金属化。通过元素分析,1 H和13 C NMR光谱以及X射线晶体学表征了配体和Co(III)配合物9。这些研究证实,Co(III)配合物9采用八面体几何形状,具有三个面部去质子化的酰胺基供体和三个面部胺供体基团。Cu(II)配合物10的特征在于元素分析,单晶X射线晶体学,循环伏安法和UV-可见吸收光谱法。与Co(III)配合物(9)相比,Cu(II)中心采用方形平面配位几何结构