Efficient Assembly of an Indole Alkaloid Skeleton by Cyclopropanation: Concise Total Synthesis of (±)‐Minfiensine

Cascading into (±)-minfiensine: An efficient method was developed for the assembly of tetracyclic skeleton 1 by a three-step, one-pot cascade reaction including cyclopropanation, ring opening, and ring closure (see scheme; Ts=p-toluenesulfonyl). The concise total synthesis of the (±)-minfiensine was completed in about a 4 % overall yield.