Tandem Radical Cyclizations with Iodoaryl Azides: Formal Total Synthesis of (±)-Aspidospermidine
作者:Balaram Patro、John A. Murphy
DOI:10.1021/ol006477x
日期:2000.11.1
An iodoazide radical cascade cyclization strategy has been used as the key step in a formal synthesis of aspidospermidine. Specifically, this step generated the alkaloid's B- and E-rings in the ethylidene-functionalized tetracycle 5. In turn, this was converted into pentacycle 25, a known advanced synthetic precursor of aspidospermidine.