The stereoselective synthesis of the fully functionalized northern hemisphere of the
marine natural product amphidinolide H2 is described. A vinylogous Mukaiyama aldol
reaction and enzymatic desymmetrization of a meso compound are the key steps in the fragment synthesis. A stereoselective acetate aldol
coupling and a 1,3-anti-reduction of the resulting β-hydroxy ketone complete the synthesis of the C14-C26
fragment.
natural products - aldol reaction - stereoselectivity - amphidinolides - macrolides