Chemical Constituents from the Roots of Schnabelia tetradonta

The new rearranged‐abietane diterpene 1 , the four new triterpenoids 2 – 5 , and the new aminoethylphenyl oligoglycoside 6 , besides 19 known compounds, were isolated from the roots of Schnabelia tetradonta , a Chinese endemic herb. The structures of the new compounds were elucidated on the basis of spectroscopic evidence as 12,17‐epoxy‐11,14,16‐trihydroxy‐17(15→16)‐ abeo ‐abieta‐8,11,13,15‐tetraen‐7‐one ( 1 ), 21 β ‐( β ‐ D ‐glucopyranosyloxy)‐2 α ,3 α ‐dihydroxyolean‐12‐en‐28‐oic acid ( 2 ), 2 β ,3 β ,16 β ‐trihydroxy‐15‐oxo‐28‐norolean‐12‐en‐23‐oic acid ( 3 ), 3 β ‐[(4‐ O ‐acetyl‐ β ‐ D ‐glucopyranuronosyl)oxy]‐2 β ,16 β ‐dihydroxy‐28‐norolean‐15‐oxo‐12‐en‐23‐oic acid ( 4 ), 3 β ‐[(4‐ O ‐acetyl‐6‐ O ‐methyl‐ β ‐ D ‐glucopyranuronosyl)oxy]‐2 β ,16 β ‐dihydroxy‐15‐oxo‐28‐norolean‐12‐en‐23‐oic acid ( 5 ), and 4‐[2‐(acetylamino)ethyl]phenyl O ‐6‐ O ‐[( Z )‐ p ‐methoxycinnamoyl]‐ β ‐ D ‐glucopyranosyl‐(1→2)]‐ O ‐[ β ‐ D ‐glucopyranosyl‐(1→3)]‐4‐ O ‐acetyl‐ α ‐ L ‐rhamnopyranoside ( 6 ), respectively.