Synthetic Study on Tetrapetalones: Stereoselective Cyclization of <i>N</i>-Acyliminium Ion To Construct Substituted 1-Benzazepines
作者:Cheng Li、Xinyu Li、Ran Hong
DOI:10.1021/ol901349b
日期:2009.9.17
The synthesis of the tetracycliccore of complex antibiotic tetrapetalones has been achieved in three steps starting from the simple intermediate γ-hydroxy amide, which can be accessed through a high-yielding six-step sequence. The successful synthesis relies on a novel strategy based on the N-acyliminium ion cyclization.