Syntheses of a series of S6 thioether cages and their coordination chemistry with Ag+
作者:Roger Alberto、Daniela Angst、Kirstin Ortner、Ulrich Abram、P. August Schubiger、Thomas A. Kaden
DOI:10.1039/b606510b
日期:——
The syntheses of four S6-cages with different cavity sizes are described. In regard of potential applications for radioimmunotherapy with 111Ag, their coordination behaviour towards Ag(I) was evaluated by studies of their reactivity in solution and of their crystal structures. All cages reacted differently with Ag(I). Whereas S6-cages based on 3,8,12,17,20,25-hexathiabicyclo[8.8.8]-hexacosane (14) and on 5,9,17,21,28,31-hexathiabicyclo[11.11.11]pentatriacontane (18) showed only external Ag(I) coordination, successive adaptation of the cage size, yielded ligand 24, based on 4,7,13,21,24,25-hexathiabicyclo[8.8.8]hexacosane, which gave a complex with internal-peripheral Ag(I) binding.
描述了四种不同腔体尺寸的S6笼的合成。考虑到111Ag在放射免疫治疗中的潜在应用,通过溶液中反应性和晶体结构的研究,评估了它们对Ag(I)的配位行为。所有的笼子对Ag(I)的反应各不相同。基于3,8,12,17,20,25-六硫双环[8.8.8]六十六烷(14)和基于5,9,17,21,28,31-六硫双环[11.11.11]五十三烷的S6笼(18)仅显示外部Ag(I)配位,而笼体尺寸的连续适应,产生了基于4,7,13,21,24,25-六硫双环[8.8.8]六十六烷的配体24,它生成了一种具有内外Ag(I)结合的复合物。