A series of 12-hydroxy-substituted abietane diterpenes, functionalized
on C19 or C18, have been synthesized starting from 18-hydroxyferruginol.
The first synthesis of antibacterial hanagokenol A and fortunins
E, G, and H, and a new procedure for preparing sugikurojin A and
the immunosuppressive 19-hydroxy-ferruginol are reported.
antibiotics - diastereoselectivity - phenols - terpenoids - oxidation