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该文报道从具有抗肿瘤活性的苦玄参(Picria fel-tarrae Lour.)提取物的B部部分中分得两个新四环三萜苷-苦玄参苷(Picfeltarraenin)IA(1)和IB(2)。1和2经酸水解均得苦玄参昔元以3),经稀酸水解分别得次生
This paper reports that two new tetracyclic triterpene glycosides (Picfeltarraenin) IA(1) were isolated from the B part of the extract of Picria fel-tarrae Lour. IB(2). 1 and 2 are acid hydrolysis of bitter xuanshenyiyuan 3), respectively, by dilute acid hydrolysis secondary