Convenient Synthesis of a Galacturonic Acid Based Macrocycle with Potential Copper-Complexation Ability
作者:Anas Allam、Laurent Dupont、Jean-Bernard Behr、Richard Plantier-Royon
DOI:10.1002/ejoc.201101406
日期:2012.2
A convenient approach to the construction of a galacturonic acid based macrocycle containing an amide group and a triazole ring has been achieved. The key step relies on the efficient formation of a 16-membered ring by a copper-catalysed intramolecular cycloaddition reaction applied to analkyne-azide galacturonate. Depending on the reaction conditions, the outcome of the 1,3-dipolar cycloaddition varied;
已经实现了构建含有酰胺基团和三唑环的基于半乳糖醛酸的大环的简便方法。关键步骤依赖于通过应用于炔烃-叠氮化物半乳糖醛酸酯的铜催化的分子内环加成反应有效形成 16 元环。1,3-偶极环加成反应的结果因反应条件而异;获得了预期的分子内 1,4-三唑以及不同比例的 C2 对称二聚体。对该大环对 CuII 阳离子的络合特性的初步研究表明,以 1:1 的金属/配体比形成穴状化合物。