人参系五加科植物人参(Panaxginseng C.A.Mey.)的根,研究结果证明,人参皂苷(Ginsensides)是其主要活性成分之一,具有消炎、抗氧化、抗癌、神经保护和增强学习记忆能力等作用,本文从新鲜人参根中分离得到了1个新化合物,根据理化性质和谱学方法并与文献报道的相关化合物的数据进行比较,鉴定其结构为丙二酰基三七人参皂苷-R4(Malonyl-notoginsenoside-R4,1)
A new malonylated dammarane-type triterpene oligoglycoside, named malonyl-notoginsenoside-R4 (1), was isolated from the fresh root of Panax ginseng C. A. Mey. The structure of malonyl-notoginsenosideR4 was determined as 3-O- [ 6-O-malonyl-β-D-glucopyranosyl ( 1→2 ) -β-D-glucopyranosyl ] -20-O- [β-D-xylopy- ranosyl( 1 →6 )-β-D-glucopyranosyl ( 1 →6 )-β-D-glucopyranosyl ]-20 (S) protopanaxadiol on the basis of physicochemical properties and spectral analysis.