A new iridoid glucoside, 8-O-acetylshanzhiside (1), was isolated from the a
erial parts of Phlomis tuberosa, together with two known iridoid glucosides
, shanzhiside methyl ester and lamalbide. The known phenylethanoid glycosid
es acteoside and forsythoside. B were also obtained and characterized. The
structure of 1 was determined by means of 1D- and 2D-NMR spectroscopic evid
ence.