Rings D-seco and B,D-seco tetranortriterpenoids from root bark of Entandrophragma angolense

► Isolation of two gedunin-type limonoids from Entandrophragma angolense. ► Isolation of three tetranortriterpenoids structurally related to methyl angolensate. ► First report of a tetranortriterpenoid bearing a 3,4-dihydroxy-2,5-dimethoxytetrahydrofuran ring side-chain.