<p>A new secoiridoid glycoside, 7β-<i>O</i>-dimethyl butanedioate morroniside (<b>1</b>) was isolated from the fruits of <i>Cornus officinalis</i> (Cornaceae) along with the known compound, caffeoyltartaric acid dimethyl ester (<b>2</b>) which was isolated from the family Cornaceae for the first time. Their structures were elucidated by physical and spectroscopic data analysis, including 1D and 2D NMR, ESI-MS and CD experiments.</p
