A totalsynthesis of the naturally occurring ionophore zincophorin has been realized. The route features an intramolecular oxymercuration of a cyclopropanemethanol and a Carroll−Claisen rearrangement for the respective elaboration of the C1−C12 and C13−C25 subunits, which have been assembled by using a highly diastereoselective titanium-mediated aldol condensation.