Stereoselective Synthesis of Fused Bicyclic β-Lactams through Radical Cyclization of Enyne-2-azetidinones<sup>1</sup>
作者:Benito Alcaide、Ignacio M. Rodríguez-Campos、Julián Rodríguez-López、Alberto Rodríguez-Vicente
DOI:10.1021/jo9823994
日期:1999.7.1
A convenient, stereoselective entry to racemic and enantiomerically pure fused bicyclic beta-lactams has been developed that involves the radical-mediated cycloisomerization of easily available monocyclic enyne-beta-lactams as the key synthetic step. These compounds are obtained provided that an activated double bond is present as a radical acceptor. In the absence of this condition, new forms of reactivity