A new total synthesis of the marine tunicate alkaloid lepadiformine.

ABSTRACT

[reaction see text]. A total synthesis of racemic lepadiformine has been achieved via a route that utilizes as key steps a novel stereocontrolled intramolecular spirocyclization of an allylsilane/N-acyliminium ion and the application of our radical-based methodology for production of N-acylimines from o-aminobenzamides.