Exploiting the palladium[0]-catalysed Ullmann cross-coupling reaction in natural products chemistry: application to a total synthesis of the alkaloid (+/-)-aspidospermidine

Org Biomol Chem. 2005 Jan 21;3(2):213-5. doi: 10.1039/b415977b. Epub 2004 Dec 7.

Abstract

Azide 14, available through the title cross-coupling process, has been converted, via the ring-fused aziridine 15, into the alkaloid aspidospermidine.