The first totalsynthesis of the naturally occurring enantiomer of exiguolide ((−)-1) has been completed. This very convergent synthesis features the following as main steps: (i) a Trost’s ruthenium-catalyzed ene−yne cross-coupling reaction (this complex transformation allows the challenging control of the C5−C28 double bond geometry along with the stereoselective construction of the tetrahydropyran