Flavonoids, cinnamic acids and coumarins from the different tissues and medicinal preparations of Taraxacum officinale
Flavonoids, cinnamic acids and coumarins from the different tissues and medicinal preparations of Taraxacum officinale
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DOI：
10.1016/0031-9422(95)00865-9
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发表时间：
1996-05-01
期刊：
影响因子：
3.8
通讯作者：
Greenham, J
中科院分区：
文献类型：
--
作者：
Williams, CA;Goldstone, F;Greenham, J
三种黄酮苷：毛地黄黄酮7-葡萄糖苷和两种毛地黄黄酮7-二葡萄糖苷是从毛地黄花和叶中分离得到的，同时还有花组织中的游离毛地黄黄酮和黄菊醇。在整个植株中发现了羟基肉桂酸、菊苣酸、单咖啡酰酒石酸和绿原酸，并在叶提取物中鉴定了香豆素、菊苣苷和秦皮苷。首次报道蒲公英中含有游离黄菊醇（木犀草素3 '-甲醚）。较早的临时鉴定菊苣酸，绿原酸，菊苣苷和七叶苷在族菊苣族的酚类调查确认。菊苣酸和相关的monocaffeyltartaric酸被认为是花，根，叶和总苞片中的主要酚类成分，也在药用制剂测试。
Three flavonoid glycosides: luteolin 7-glucoside and two luteolin 7-diglucosides were isolated from dandelion flowers and leaves together with free luteolin and chrysoeriol in the flower tissue. The hydroxycinnamic acids, chicoric acid, monocaffeyltartaric acid and chlorogenic acid were found throughout the plant and the coumarins, cichoriin and aesculin were identified in the leaf extracts. This represents the first report of free chrysoeriol (luteolin 3'-methyl ether) in Taraxacum officinale agg. An earlier provisional identification of chicoric acid, chlorogenic acid, cichoriin and aesculin in a phenolic survey of the tribe Cichorieae is confirmed. Chicoric acid and the related monocaffeyltartaric acid were found to be the major phenolic constituents in flowers, roots, leaves and involucral bracts and also in the medicinal preparations tested.