Methods of using 1-O-acetylbritannilatone spiro aryl isoxazoline compounds

摘要

A method of inhibiting leukotriene include: administrating a therapeutically effective amount of a compound of chemical formula I or II or a pharmaceutical acceptable salt thereof to a subject,; R₁ is OH or OAc; X is C or N; and R₂ is H, alkyl, alkoxy, benzyloxy, haloalkyl, OH, CN, NO₂, or halogen, provided that when X is N, R₂ is nil.