Alkene and Alkyne Metathesis: Navenone B (Cossy), (+)-Asperpentyn (Daesung
Lee), (-)-Amphidinolide K (Eun Lee), Norhalichondrin B (Phillips) A variety of antibiotics and immune-suppressive agents contain extended arrays of all-(E)-polyenes. Samir Bouzbouz of CNS Rouen and Janine Cossy of ESPCI…