Regioselective iodination of flavonoids by N-iodosuccinimide under neutral conditions
作者:Kui Lu、Jie Chu、Haomeng Wang、Xiaoli Fu、Dewu Quan、Hongxia Ding、Qingwei Yao、Peng Yu
DOI:10.1016/j.tetlet.2013.09.051
日期:2013.11
and drug molecules, was achieved by iodination of suitably alkylated flavonoids with N-iodosuccinimide (NIS) in DMF. The iodination gives either a C-6 or C-8 iodo flavonoid in high yield, depending on the protection pattern of the C-5 and C-7 OH groups. The mild and neutral conditions render this novel protocol particularly useful for the regioselective iodination of acid-sensitive substrates.
通过在DMF中用N-碘丁二酰亚胺(NIS)对合适的烷基化类黄酮进行碘化,可以实现C-6和C-8单碘类黄酮的区域选择性合成,这是合成类黄酮天然产物和药物分子的重要中间体。根据C-5和C-7 OH基团的保护方式,加碘可高产C-6或C-8碘代黄酮。温和和中性的条件使该新方案对于酸敏感性底物的区域选择性碘化特别有用。