The first total synthesis of epi-cochlioquinone A has been achieved in a highly convergent manner via [3+3] cycloaddition of catechol 2 and oxadecalin 3 as the key reaction. The synthesis of the catechol segment, possessing the side chain with multi stereogenic centers, features the asymmetricvinylogous Mukaiyama aldolreaction, the stereoselective conjugate addition to the nitroalkene, the stereospecific