作者:Yingjun Jiang、Xiaoyu Liu、Wenxuan Li、Xiaozhen Jiao、Ping Xie
DOI:10.1021/acs.joc.2c03066
日期:2023.3.17
The total synthesis of levesquamide, a natural product with an unprecedented pentasubstituted pyridine-isothiazolinone skeleton, has been accomplished from kojic acid for the first time. The key features of the synthesis include a Suzuki coupling reaction between bromopyranone and oxazolyl borate fragments, a copper-mediated introduction of a thioether, a mild hydrolysis of a pyridine 2-N-methoxyamide
levesquamide 是一种具有前所未有的五取代吡啶-异噻唑啉酮骨架的天然产物,首次以曲酸为原料实现了全合成。该合成的主要特征包括溴吡喃酮和恶唑基硼酸酯片段之间的铃木偶联反应、铜介导的硫醚引入、吡啶 2-N-甲氧基酰胺的温和水解以及叔丁基的Pummerer型环化亚砜形成天然产物的关键吡啶-异噻唑啉酮单元。