Total Synthesis of Amphirionin-4.

An expeditious enantioselective total synthesis of amphirionin-4, a remarkably potent promoter of the proliferation of ST-2 cells, has been achieved from (±)-(E)-1,4-hexadien-3-ol by an 8-pot sequence that features the Sharpless kinetic resolution, iodoetherification, and the CBS reduction to install the stereocenters, utilization of four one-pot transformations to streamline the synthetic process, and the Stille coupling reaction at nearly the center of the target molecule to complete the total synthesis.