1-O-acetylbritannilatone spiro aryl isoxazoline compounds
A compound of chemical formula I: or formula II:  or a pharmaceutical acceptable salt thereof is disclosed. 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. 
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
C C A A
C07D C07D A61P A61P
inventional additional inventional inventional
Yuzhi Juan Han Chengyuan Nan Lei Shaomeng
Liu Xia Li Liang Qin Tian Pei