Nucleophilic Ring-Opening of Epoxide and Aziridine Acetates for the Stereodivergent Synthesis of β-Hydroxy and β-Amino γ-Lactams
作者:Tula B. Bisol、Adailton J. Bortoluzzi、Marcus M. Sá
DOI:10.1021/jo102267h
日期:2011.2.4
A highlyregio- and stereoselective synthesis of novel β,γ-disubstituted γ-lactams with either an anti or syn relative configuration was developed from readily available epoxide and aziridine acetates. The key steps include the regio- and diastereocontrolled nucleophilic ring-opening of these three-membered heterocycles followed by mild reductive cyclization of the γ-azido ester intermediate. The method