Synthesis of the proposed penultimate biosynthetic triene intermediate of monensin A

Synthese de l'acide (dihydroxy-5,7 dioxo-9,25 ethyl-16 heptamethyl-2,4,6,12,18,22,24 methoxy-3) hexacosatriene-12,16,20oique par copulation de 3 synthons chiraux