Synthesis of Luffarin L and 16-epi-Luffarin L Using a Temporary Silicon-Tethered Ring-Closing Metathesis Reaction

The first synthesis of luffarin L (1) and 16-epi-luffarin L (2) by a silicon-tethered ring closing metathesis as a key step has been achieved. The stereochemistry and absolute configuration of the natural sesterterpenolide luffarin L (1) and a new route for the stereoselective synthesis of sesterterpenolides with a luffarane skeleton have been established.