Titanium-Mediated <i>aza</i>-Nazarov Annulation for the Synthesis of N-Fused Tricycles: A General Method to Access Lamellarin Analogues
作者:Zhixin Liu、Xinyu Liu、Shengkuan Yang、Xiaohe Miao、Dehai Li、De Wang
DOI:10.1021/acs.joc.2c01379
日期:2022.8.5
a unique strategy to access multifunctional N-fused tricycles from α,β-unsaturated isoquinoline ketone and sulfonamide under mild reaction conditions. The methodology features wide substrate tolerance, and a set of N-fused heteroarenes including quinoline, phthalazine, quinazoline, quinoxaline, and benzothiazole cores are furnished efficiently. Moreover, the protocol is easy to scale up to synthesize
具有氮结合的稠合杂环在许多研究领域中具有特殊的生物活性用途和高度重要性,尤其是基于异喹啉的 [6/6/5] 三环化合物。在这里,我们报告了一种独特的策略,可以在温和的反应条件下从 α,β-不饱和异喹啉酮和磺酰胺中获得多功能 N-稠合三环化合物。该方法具有广泛的底物耐受性,并有效地提供了一组 N-稠合杂芳烃,包括喹啉、酞嗪、喹唑啉、喹喔啉和苯并噻唑核。此外,该方案易于放大合成lamellarin类似物,产品的酰胺基团也易于转移到其他官能团。