Asymmetric total synthesis of (+)-isocryptotanshinone and formal synthesis of (−)-cryptotanshinone
作者:Xiang Shi、Xiaoyu Liu、Feilong Yang、Yong Wang、Zhenwei Wang、Xiaozhen Jiao、Ping Xie
DOI:10.1016/j.tet.2019.05.069
日期:2019.7
The first asymmetric total synthesis of (+)-isocryptotanshinone was achieved in 12 linear steps with 12% overall yield from commercially available dihydrobenzopyrone. The key step was a base-mediated cyclization reaction. In addition, the synthetic strategy included the formal synthesis of (−)-cryptotanshinone.
(+)-异隐庚烷酮的第一次不对称全合成以12个线性步骤完成,从可商购的二氢苯并吡喃酮中获得的总收率为12%。关键步骤是碱基介导的环化反应。另外,合成策略包括(-)-隐丹参酮的形式合成。