Lewis Acid-Catalyzed Ring-Opening Reactions of Semicyclic <i>N</i>,<i>O</i>-Acetals
作者:Masaharu Sugiura、Shū Kobayashi
DOI:10.1021/ol006990a
日期:2001.2.1
[figure: see text] Ring-openingreactions of semicyclic N,O-acetals with various nucleophiles such as silyl enol ethers are effectively catalyzed by a Lewis acid (TMSOTf). Reactions of 3-substituted N,O-acetals showed high diastereoselectivities. Synthetic utility of this method has been demonstrated in the stereoselective synthesis of an anti-malarial agent, isofebrifugine.