...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Biochemical Systematics and Ecology >Geographical variation in the surface flavonoids of Pulicaria dysenterica.
【24h】

Geographical variation in the surface flavonoids of Pulicaria dysenterica.

机译：紫草表面黄酮的地理变化。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Four chemical races were detected in Pulicaria dysenterica, when sampled within Europe, on the basis of the surface flavonoids present. One race uniquely contained quercetagetin 3,7-dimethyl ether and another 6-hydroxykaempferol 3,4'-dimethyl ether.A third race was based on plants having 6-hydroxykaempferol 3,7-dimethyl ether together with quercetagetin 3,7,3'-trimethyl ether. The fourth race contained the above two compounds, as well as quercetagetin 3,7,3',4'-tetramethyl ether and 6-hydroxykaempferol 3,7,4'-trimethyl ether. These lipophilic constituents were variously present on the surfaces of leaf, ray floret, disc floret and fruit. By contrast, the vacuolar flavonoid of all tissues and all races was uniformly quercetin 3-glucuronide. The kaempferol 3-glucoside previously reported in flowers was not detected. Of the lipophilic flavonoids newly reported from this plant, one 6-hydroxykaempferol 3,7,4'-trimethyl ether is new to nature.
机译：根据存在的表面黄酮类化合物，在欧洲范围内对痢疾菌（Pulicaria dysenterica）检测到四个化学小种。一个种族独特地包含槲皮素3,7-二甲醚和另一个6-羟基山emp酚3,4'-二甲醚。第三种族基于具有6-羟基山ka酚3,7-二甲醚和槲皮素3,7,3'的植物。 -三甲醚。第四种族包含以上两种化合物，以及槲皮素3,7,3'，4'-四甲基醚和6-羟基山emp酚3,7,4'-三甲基醚。这些亲脂性成分以不同的方式存在于叶片，射线小花，盘状小花和果实的表面。相反，所有组织和所有种族的液泡类黄酮均是槲皮素3-葡萄糖醛酸。未检测到先前在花中报告的山奈酚3-山梨糖苷。从该植物新报道的亲脂性类黄酮中，一种6-羟基山emp酚3,7,4'-三甲基醚是自然界中新发现的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号