A highly stereoselective synthesis of an azaspirolactam related to cephalotaxus alkaloids
作者:Martin R Bryce、John M Gardiner、Michael B Hursthouse、Richard L Short
DOI:10.1016/s0040-4039(00)95786-1
日期:1987.1
Azaspirolactam (5) has been stereoselectively synthesised from nitrostyrene derivative (2) in high yield by sequential cycloaddition, Michael addition and reductive cyclisation reactions; the stereochemistry of compound (5) is confirmed by X-ray analysis of azaspirothiolactam (6).
通过顺序环加成,迈克尔加成和还原环化反应,由硝基
苯乙烯衍
生物(2)以高收率立体选择性地合成了
氮杂螺内
酰胺(5)。化合物(5)的立体
化学通过
氮杂螺
硫内
酰胺(6)的X射线分析证实。