Abstract
A new labdane diterpenoid, 15-O-β-D-glucopyranosyl-labda-8(17), 13E-diene-3β, 7β-diol (1), was isolated from the aerial parts of Pteris semipinnata, along with two known compounds, namely paniculoside III (2), and pterosin C 3-O-β-D-glucoside (3). The structure of 1 was established on the basis of spectroscopic data, including IR, HR-ESIMS, 1D and 2D NMR spectroscopy.
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