TANNINS AND RELATED-COMPOUNDS .110. HIRSUNIN, AN ELLAGITANNIN WITH A DIARYLHEPTANOID MOIETY, FROM ALNUS-HIRSUTA VAR MICROPHYLLA
TANNINS AND RELATED-COMPOUNDS .110. HIRSUNIN, AN ELLAGITANNIN WITH A DIARYLHEPTANOID MOIETY, FROM ALNUS-HIRSUTA VAR MICROPHYLLA
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DOI：
10.1016/0031-9422(92)80049-k
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发表时间：
1992-03-01
期刊：
影响因子：
3.8
通讯作者：
NISHIOKA, I
中科院分区：
文献类型：
--
作者：
LEE, MW;TANAKA, T;NISHIOKA, I
从毛桤木Alnus hirsuta var.已经阐明了由通过酯键连接的二芳基庚烷类糖苷（牛至皂苷）和鞣花单宁（前毒素A）部分组成的结构。 此外，还证明了存在七种已知的可水解单宁，pedunculagin，praecoxin A，1，2，6-和1，4，6-三-O-没食子酰基-β-D-葡萄糖，1-去没食子丁香苷，1-去没食子酰基rugosin F和rugosin F，沿着有牛至素和龙胆酸5-O-β-D-（6 '-O-没食子酰基）-吡喃葡萄糖苷。
A novel ellagitannin, hirsunin, was isolated from the leaves of Alnus hirsuta var. microphylla and the structure which consists of diarylheptanoid glycoside (oregonin) and ellagitannin (praecoxin A) moieties connected through an ester linkage has been elucidated. Furthermore, the occurrence of the seven known hydrolysable tannins, pedunculagin, praecoxin A, 1,2,6- and 1,4,6-tri-O-galloyl-beta-D-glucoses, 1-desgalloyleugeniin, 1-desgalloylrugosin F, and rugosin F, along with oregonin and gentisic acid 5-O-beta-D-(6'-O-galloyl)-glucopyranoside has also been demonstrated.