ellagitannins of davidia involucrata. i. structure of davicratinic acid a and effects of davidia tannins on drug-resistant bacteria and human oral squamous cell carcinomas
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2017
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Abstract
We isolated a new ellagitannin, davicratinic acid A (5), together with four known ellagitannins, davidiin (1), granatin A (2), pedunculagin (3), and 3-O-galloylgranatin A (4), from an aqueous acetone extract of dried Davidia involucrata leaves. The known ellagitannins were identified based on spectroscopic data. The structure of davicratinic acid A (5), a monomeric ellagitannin possessing a unique, skew-boat glucopyranose core, was established based on spectroscopic data. Additionally, we examined the effects of several tannins with good yields from this plant on drug-resistant bacteria and human oral squamous cell carcinomas, and found that davidiin (1) exhibited the most potent antibacterial and antitumor properties among the tannins examined.
| Reference Key |
shimozu2017moleculesellagitannins
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|---|---|
| Authors | ;Yuuki Shimozu;Yuriko Kimura;Akari Esumi;Hiroe Aoyama;Teruo Kuroda;Hiroshi Sakagami;Tsutomu Hatano |
| Journal | Journal of ethnopharmacology |
| Year | 2017 |
| DOI |
10.3390/molecules22030470
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| URL | |
| Keywords | Keywords not found |
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