A new bicyclic spiroketone was isolated from the bud of Chrysanthemum indicum L. The chemical structure was elucidated as （1R, 9S, 10S）-10-hydroxyl-8 （2＇, 4＇-diynehexylidene）- 9-isovaleryloxy-2, 7-dioxaspiro [5,...A new bicyclic spiroketone was isolated from the bud of Chrysanthemum indicum L. The chemical structure was elucidated as （1R, 9S, 10S）-10-hydroxyl-8 （2＇, 4＇-diynehexylidene）- 9-isovaleryloxy-2, 7-dioxaspiro [5, 4] decane based on the X-ray crystallography.展开更多
以野菊花为原材料,经热水提取、乙醇沉淀、DEAE-Sepharose Fast Flow和Sephacryl S-200凝胶柱层析分离纯化,得到1个水溶性的中性多糖CIP-C.采用GC-MS、部分酸水解及甲基化分析等对该多糖的结构进行了解析.结果表明,该多糖主要由D-Man,D-...以野菊花为原材料,经热水提取、乙醇沉淀、DEAE-Sepharose Fast Flow和Sephacryl S-200凝胶柱层析分离纯化,得到1个水溶性的中性多糖CIP-C.采用GC-MS、部分酸水解及甲基化分析等对该多糖的结构进行了解析.结果表明,该多糖主要由D-Man,D-Glc和D-Gal组成,并含有少量的D-Fuc,L-Ara和D-Xyl,其主链由β(或α)-D-1,4-Man,β-D-1,6-Glc和β-D-1,4-Gal组成,而阿拉伯糖通过α-L-T-Araf和α-L-1,5-Araf连接形成阿拉伯聚糖支链或与β-D-1,4-Galp的O3位相连形成阿拉伯半乳聚糖支链.展开更多
文摘A new bicyclic spiroketone was isolated from the bud of Chrysanthemum indicum L. The chemical structure was elucidated as （1R, 9S, 10S）-10-hydroxyl-8 （2＇, 4＇-diynehexylidene）- 9-isovaleryloxy-2, 7-dioxaspiro [5, 4] decane based on the X-ray crystallography.
文摘以野菊花为原材料,经热水提取、乙醇沉淀、DEAE-Sepharose Fast Flow和Sephacryl S-200凝胶柱层析分离纯化,得到1个水溶性的中性多糖CIP-C.采用GC-MS、部分酸水解及甲基化分析等对该多糖的结构进行了解析.结果表明,该多糖主要由D-Man,D-Glc和D-Gal组成,并含有少量的D-Fuc,L-Ara和D-Xyl,其主链由β(或α)-D-1,4-Man,β-D-1,6-Glc和β-D-1,4-Gal组成,而阿拉伯糖通过α-L-T-Araf和α-L-1,5-Araf连接形成阿拉伯聚糖支链或与β-D-1,4-Galp的O3位相连形成阿拉伯半乳聚糖支链.
