A new secoiridoid glucoside from Olea europaea .

A new phenolic glucoside (), olerikaside, and other known secoiridoid glucosides [oleuropein (), demethyl oleuropein (), oleoside 11-methyl ester (), oleoside 7, 11-dimethyl ester (), 7-β-D-glucopyranosyl 11-methyl oleoside (), secoxyloganin (), ilicifolioside B (), hydroxytyrosol (), and hydroxytyrosol glucosides ()] were isolated from unprocessed olive fruits of cv. "Lucca". The chemical structure of olerikaside () was clarified based on spectroscopy and chemical analysis data.