Introduction The phytochemical and biological studies carried out on Salvia species showed
that their extracts and constituents have various biological activities. Objective The aim of
this study was the isolation of diterpenoids from the roots of Salvia barrelieri Ettling and the
determination of the antioxidant activity. Methodology Chromatographic methods were used
for fractionation and isolation, respectively. Structure elucidation was established by
spectroscopic methods. Five antioxidant assays were performed. Results Three new …