Three New 24‐Nortriterpenoids from the Roots of Ilex asprella

Asprellols A–C ( 1 – 3 , resp.), three new 24‐nortriterpenoids, were isolated from the CHCl 3 ‐soluble fraction of 95% EtOH extract of the roots of Ilex asprella , together with a known nortriterpenoid. The structures of the new compounds were elucidated as 2,6 β ,20 β ‐trihydroxy‐3‐oxo‐11 α ,12 α ‐epoxy‐24‐norursa‐1,4‐dien‐28,13 β ‐olide ( 1 ), 2,6 β ‐dihydroxy‐3‐oxo‐11 α ,12 α ‐epoxy‐24‐norursa‐1,4,20(30)‐trien‐28,13 β ‐olide ( 2 ), and 2,6 β ‐dihydroxy‐3‐oxo‐11 α ,12 α ‐epoxy‐24‐noroleana‐1,4‐dien‐28,13 β ‐olide ( 3 ) on the basis of spectroscopic analyses.