【摘要】 苦玄参(Pieria fel-tarrae Lour)提取物的 B 部份经酸水解后,分离出苦玄参甙元Ⅳ。根据它的谱学数据及化学反应证明其具有4的结构。同时还阐明了1和4的边链降解产物(8)的结构。更多还原

【Abstract】 A series of new triterpenoid aglycones has been isolated from fraction B of Picria fel-tarrae Lour extract.The structure of piefeltarraegenin IV was assigned as 4 by means of spectroscopic data(UV,IR,¹HNMR,¹³CNMR and MS)and some chemical reactions.The structure of degradation product（8）obtained from 1 and 4 was also determined.更多还原