Assessing the absolute configuration of (7S,8R)-(−)-epoxyjasmone

The absolute configuration of cis-epoxyjasmone (−)-2, isolated from Trichosporum cutaneum CCT 1903 whole cells, has been unambiguously established as (7S,8R), [α]D20 −29.0° (c 1.3, CHCl3), by a new two step method, using a regioselective epoxide opening as the key step followed by Mosher acid derivatization.