A New Norpentacyclic Triterpenoid Auriculatone from Aster auriculatus Franch
GAO Cheng-Wei, CHEN Yu-Shu, ZHAO Shu-Nian, LU Yang, TIAN Zhi-Yue, ZHENG Qi-Tai
Chem. J. Chinese Universities . 1994, (4): 521 -523 .