A [two-step/one week] synthesis of C-functionalized homocyclens and cyclams. Application to the preparation of conjugable BCAs without chelating properties alteration
作者:Nathalie Camus、Zakaria Halime、Nathalie le Bris、Hélène Bernard、Maryline Beyler、Carlos Platas-Iglesias、Raphaël Tripier
DOI:10.1039/c5ra17133d
日期:——
linear tetraamine 1,4,7,10-tetraazadecane. Additionally, the appended alcohol functions of various cyclam and homocyclen based ligands were converted into their ethylamine functions following a very convenient procedure. Finally, preliminary analytical and complexation studies highlight that the supplementary hydroxyethyl C-appended chain has only a low impact on the acid–base behaviour and copper(II)
提出了一种通用且高效的双氨基模板方法,用于合成环烷和带有羟乙基官能团的[13] aneN4(高环素)双官能螯合剂(BCA),作为C附加基团。合成快速(两步/一周),不需要严格的保护-去保护步骤或色谱纯化。另一种反应途径和替代性后处理使他们能够获得其氧代-cyclam和氧代-高环素类似物。该程序包括将顺式四胺1,4,8,11-四氮杂十一烷环化成顺式-丁二酮-双酰胺形式,具有α,β-不饱和内酯,可提供四环含氧中间体,其双酰胺桥可轻松除去和/或在温和条件下其酰胺功能降低。此外,该合成路线已成功地应用于从线性四胺1,4,7,10-四氮杂十二烷开始的teta和trita BCAs类似物的合成。另外,按照非常方便的方法,将各种基于环蛋白和高环素的配体的附加醇官能团转化为它们的乙胺官能团。最后,初步的分析和络合研究表明,附加的羟乙基碳附加链对酸碱行为和铜(II)或锌(II)的影响很小。)大环的协调属性。