来自石榴木心材的两种鞣花单宁。
Two ellagitannins from Punica granatum heartwood.
作者信息
El-Toumy Sayed A A, Rauwald Hans W
机构信息
Institut für Pharmazie, Pharmazeutische Biologie, Universität Leipzig, Johannisallee 21-23, D-04103, Leipzig, Germany.
出版信息
Phytochemistry. 2002 Dec;61(8):971-4. doi: 10.1016/s0031-9422(02)00435-1.
In the course of studies on polyphenol metabolism in Punica granatum heartwood two new ellagitannins, diellagic acid rhamnosyl (1-->4) glucopyranoside and 5-O-galloylpunicacortein D were isolated and characterized together with four known tannin metabolites, punicacortein D, punicalin, punicalagin and 2-O-galloylpunicalin. Structures of the isolated compounds were established by chromatography, chemical degradation, UV and 1D/ 2D 1H/13C NMR spectroscopy.
在对石榴木心材中多酚代谢的研究过程中，分离并鉴定了两种新的鞣花单宁，即鞣花酸鼠李糖基（1→4）吡喃葡萄糖苷和5 - O - 没食子酰石榴皮素D，以及四种已知的单宁代谢产物，石榴皮素D、石榴苷、安石榴苷和2 - O - 没食子酰石榴苷。通过色谱法、化学降解、紫外光谱以及一维/二维氢谱/碳谱核磁共振光谱确定了所分离化合物的结构。
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