Structural Revisions in Natural Ellagitannins.

Structural Revisions in Natural Ellagitannins.
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DOI:
10.3390/molecules23081901
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发表时间:
2018-07-30
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Matsumoto S
Matsumoto S
中科院分区:
其他
文献类型:
--
作者:
Yamada H;Wakamori S;Hirokane T;Ikeuchi K;Matsumoto S

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从字面上看,单宁是单宁的一类。由酚类部分在β-五配基-d-葡萄糖上的氧化引发,通过酚类部分的偶联、氧化为高度复杂的结构、二聚体和更大的类似物的形成等各种结构转换产生鞣胶,从而扩大了结构的多样性。到目前为止,已鉴定出1000多种天然鞣质。由于这些酚类化合物具有多种生物活性,使其在医药和保健方面具有潜在的应用前景。在确定适当应用的范围内,需要以正确的结构特征为基础进行考虑。本文综述了32种天然海藻单宁的结构修订,它们是:芦荟素;芦荟素A和B;藜芦素;蓖麻素;木麻黄素;天花粉蛋白A和B;芥子酸;柯里拉金;香叶黄素;异麦角菌素;nobotanin B,C,E,G,H,I,J和K;辣木素;桃金素;胡萝卜苷B;血根素H-2,H-3和H-6;水苏素;麦角菌素;Calvesagin和vescalin。主要侧重于初步结构确定的概要、查找结构中错误的过程以及结构修订的方法。
Ellagitannins are literally a class of tannins. Triggered by the oxidation of the phenolic parts on β-pentagalloyl-d-glucose, ellagitannins are generated through various structural conversions, such as the coupling of the phenolic parts, oxidation to highly complex structures, and the formation of dimer and lager analogs, which expand the structural diversity. To date, more than 1000 natural ellagitannins have been identified. Since these phenolic compounds exhibit a variety of biological activities, ellagitannins have potential applications in medicine and health enhancement. Within the context of identifying suitable applications, considerations need to be based on correct structural features. This review describes the structural revisions of 32 natural ellagitannins, namely alnusiin; alnusnin A and B; castalagin; castalin; casuarinin; cercidinin A and B; chebulagic acid; chebulinic acid; corilagin; geraniin; isoterchebin; nobotanin B, C, E, G, H, I, J, and K; punicalagin; punicalin; punigluconin; roxbin B; sanguiin H-2, H-3, and H-6; stachyurin; terchebin; vescalagin; and vescalin. The major focus is on the outline of the initial structural determination, on the processes to find the errors in the structure, and on the methods for the revision of the structure.
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