Secoiridoid glucosides from fraxinus ornus bark

Two novel secoiridoid glucosides, hydroxyframoside A and hydroxyframoside B, were isolated as a mixture from the ethanolic extract of Fraxinus ornus bark, together with the known secoiridoids hydroxyornoside, ligstroside, framoside and oleuropein, and the lignan l-hydroxypinoresinol glucoside. The structures of the new compounds were elucidated on the basis of spectral data.