On the Diastereofacial Selectivity of Lewis Acid Catalyzed Carbon-Carbon Bond Forming Reactions of Conjugated Cyclic Enones Bearing Electron-Withdrawing Substituents at the γ-Position

1. Jeroncic, L.O.
2. Cabal, M.-P.
3. Danishefsky, S.J.
4. Shulte, G.M.