Rhodium(
<scp>II</scp>
)‐Catalyzed [4+3] Cyclization of Triazoles with Indole Derivatives and Its Application in the Total Synthesis of (±)‐Aurantioclavine
作者:Shengguo Duan、Bing Xue、Hui Meng、Zihang Ye、Ze‐Feng Xu、Chuan‐Ying Li
DOI:10.1002/cjoc.202000657
日期:2021.5
rhodium(II)‐catalyzed [4+3] cyclization reaction of 1‐sulfonyl‐1,2‐3‐triazoles and indoles was developed. Azepino[5,4,3‐ cd]indoles, which are widely distributed in ergot alkaloids with various biological activities, could be obtained in good to excellent yields. In addition, the total synthesis of (±)‐aurantioclavine was completed in four steps from the known compound 1a adopting this [4+3] cyclization as a key step
开发了有效的铑(II)催化的1-磺酰基-1,2-3-3三唑和吲哚的[4 + 3]环化反应。可以以良好或极好的收率获得阿斯皮诺[5,4,3- cd ]吲哚,广泛分布在具有各种生物活性的麦角生物碱中。此外,采用这种[4 + 3]环化作为关键步骤,从已知化合物1a的四个步骤中完成了(±)-金葡糖醇的总合成。