One-Pot Synthesis of Strained Macrocyclic Pyridone Hexamers and Their High Selectivity toward Cu<sup>2+</sup> Recognition
作者:Changliang Ren、Jie Shen、Huaqiang Zeng
DOI:10.1021/acs.orglett.5b02780
日期:2015.12.18
The removal of Cu2+ ions is relevant to environmental pollution control and neurodegenerative disease treatment. A novel family of strained macrocyclic pyridone hexamers, which exhibit highly selective recognition of Cu2+ ions and reduce copper content in artificial seawater by 97% at a very low [host]:[CuCl2] molar ratio of 2:1, is documented.
Cu 2+离子的去除与环境污染控制和神经退行性疾病的治疗有关。记录了一个新的应变大环吡啶酮六聚体家族,该化合物在非常低的[主体]:[CuCl 2 ]摩尔比为2:1的情况下显示出对Cu 2+离子的高度选择性识别,并将人造海水中的铜含量降低了97%。
Described in this study is a conceptually new class of five-fold-symmetric cavity-containing planar pentameric macrocycles with their interior decorated by five convergently aligned, properly spaced carbonyl oxygen atoms. These cation-binding oxygens enclose a hydrophilic lumen of 2.85 angstrom in radius and thus display high-affinity binding toward alkali metal cations, and possibly many other cations, too. Arising from their high-affinity recognition of metal ions, these planar macrocycles form cation- or ion-pair-induced one-dimensional columnar aggregates, and subsequently fascinating fibrillation results.