Total Synthesis of (±)-Hirsutine: Application of Phosphine-Catalyzed Imine–Allene [4 + 2] Annulation
作者:Reymundo A. Villa、Qihai Xu、Ohyun Kwon
DOI:10.1021/ol302077n
日期:2012.9.7
The total synthesis of the indole alkaloid hirsutine has been achieved, with a key step being the application of our phosphine-catalyzed [4 + 2] annulation of an imine with ethyl α-methylallenoate. From commercially available indole-2-carboxaldehyde, the target was synthesized in 14 steps and 6.7% overall yield.
吲哚生物碱毛素的全合成已经实现,其中一个关键步骤是应用我们的膦催化 [4 + 2] 亚胺与 α-甲基烯丙酸乙酯的环化。从市售的 indole-2-carboxaldehyde 合成目标物,分 14 步,总产率为 6.7%。