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从蓝果树科植物紫树Nyssasinensis中分得2个化合物．一个被鉴定为胡萝卜甙（Ⅰ）；另一个化合物系新的鞣花酸甙，命名为紫树甙（nyssoside，Ⅱ），其结构为3’－O－甲基－3，4－O，O－亚甲基鞣花酸一4’－O-β-D-葡萄吡喃糖甙。
2. Two compounds were isolated from the blue fruit tree Violet Nyssasinensis. One was identified as carrot (I); the other compound was a new ellagic acid glycoside, named nyssoside (II), whose structure was 3’-O-methyl-3,4-O,O. - Methylene ellagic acid - 4’-O-β-D-pyranoside.