cis-Diprotected cyclams and cyclens: a new route to symmetrically or asymmetrically 1,4-disubstituted tetraazamacrocycles and to asymmetrically tetrasubstituted derivatives
作者:Frédéric Bellouard、Françoise Chuburu、Nelly Kervarec、Loïc Toupet、Smaïl Triki、Yves Le Mest、Henri Handel
DOI:10.1039/a905701c
日期:——
The use of cyclam and cyclen oxamides as intermediates for the synthesis of N
1,N
4-disubstituted tetraazamacrocycles is reported. This pathway affords a general strategy for the preparation of symmetrically or asymmetrically disubstituted derivatives in good yields. Also these intermediates proved convenient synthons for the preparation of asymmetrically tetrasubstituted macrocycles, leading to a new class of potentially dinucleating ligands.
报告中介绍了使用环酰胺和环烯酰胺作为中间体合成 N 1,N 4-二取代四氮杂环的方法。这一途径提供了一种以良好收率制备对称或不对称二取代衍生物的通用策略。此外,这些中间体也被证明是制备不对称四取代大环的方便合成物,从而产生了一类新的潜在二核配体。