Diterpenoids from isodon flavidus

Two new diterpenoids of the pimarane type, flavidusin A and B, as well as seven known compounds, glutinosin, ent-kauran-16β,17-diol, siegesbeckiol, 16-hydroxy feruginol, hinokiol, maslinnic acid and 5-hydroxy-7,4′-dimethoxyflavone were isolated from the dried leaves of Isodon flavidus. The new diterpenoids were identified as isopimar-8(14)-15,16-diol and 15,16-dihydro-15β-hydroxy-14α,16-epoxyisopimar-8(9)-ene. The absolute configuration of...