From the ethyl acetate fraction of the methanol extract of the needles of Pinus densiflora (Pinaceae), a new diterpenoid glucoside [$9{alpha}$,$13{alpha}$-epoxy-$8{eta}$,$14{eta}$-dihydroxy-abietic acid-18-O-$eta$-D-glucopyranoside] (1), two flavonoid glucosides [kaempferol 3-O-$eta$-D-glucoside (2) and 6-C-methyl kaempferol 3-O-$eta$-D-glucoside (3)], and two monoterpenoid glucosides [bornyl 6-O-$alpha$-L-arabinofuranosyl ($1{ ightarrow}6$)-$eta$-D-glucopyranoside (4) and bornyl 6-O-$eta$-D-apiofuranosyl ($1{ ightarrow}6$)-$eta$-D-glucopyranoside (5)] were isolated and characterized on the basis of spectral analysis. Of all the compounds, 2 and 3 showed peroxynitrite scavenging activity.