Triterpenoid glycosides from the roots of Tetrapanax papyriferum K. Koch. III. Structures of four new saponins.

Six compounds were isolated from the roots of Tetrapanax papyriferum K. KOCH. and characterized as β-D-glucopyranosyl oleanate-(3)-[α-L-arabinofuranosyl-(1→4)]-[β-D-galactopyranosyl-(1→2)]-methyl-(β-D-glucopyranosid) uronate (1), α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl oleanate-(3)-α-L-arabinofuranosyl-(1→4)-methyl-(β-D-glucopyranosid) uronate (2), β-D-glucopyranosyl oleanate-(3)-β-D-galactopyranosyl-(1→2)-methyl-(β-D-glucopyranosid) uronate (3), methyl oleanate-(3)-[α-L-arabinofuranosyl-(1→4)]-[β-D-galactopyranosyl-(1→2)]-methyl-(β-D-glucopyranosid) uronate (4), β-sitosterol β-D-glucopyranoside (5) and oleanolic acid-(3)-β-D-galactopyranosyl-(1→2)-β-D-fucopyranoside (6) on the bases of chemical and spectroscopic evidence.

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