New amphiphilic nucleosides 3, 5, 7, 9 and nucleobases 12, 14, with lipophilic alkynyl substituents attached to the N-heterocyclic ring were obtained in a straightforward manner by Sonogashira coupling of 5-iodouridine, 8-bromoadenosine and protected 8-bromoguanosine or related halonucleobases. In most cases protective groups were unnecessary.
通过
5-碘尿苷、8-
溴腺苷和受保护的
8-溴鸟苷或相关卤代核酸的 Sonogashira 偶联,可以直接获得 N-杂环上带有亲脂性炔基取代基的新型两亲核苷 3、5、7、9 和核碱基 12、14。大多数情况下不需要保护基团。