Shiitake, Hua Gu · 2014 · Research Support, Non U.S. Gov'T
Low relevanceNew metabolites of C-glycosidic ellagitannin from Japanese oak sapwood.
Lentinula edodes
Key points
- Two unusual ellagitannin metabolites, quercusnins A (3) and B (4), have been isolated from the sapwood of Quercus crispula, and their structures determined by spectroscopic methods, as well as DFT calculations of (1)H and (13)C NMR chemical shifts of the possible four diastereomers
- Treatment of the major ellagitannin species, vescalagin, with Shiitake mushroom (Lentinula edodes) gave 3, which indicated that these unique ellagitannins were the fungal metabolites of ellagitannins
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Citation abstract
Two unusual ellagitannin metabolites, quercusnins A (3) and B (4), have been isolated from the sapwood of Quercus crispula, and their structures determined by spectroscopic methods, as well as DFT calculations of (1)H and (13)C NMR chemical shifts of the possible four diastereomers. Treatment of the major ellagitannin species, vescalagin, with Shiitake mushroom (Lentinula edodes) gave 3, which indicated that these unique ellagitannins were the fungal metabolites of ellagitannins.
Citation
Omar M, Matsuo Y, Maeda H, Saito Y, Tanaka T (2014). New metabolites of C-glycosidic ellagitannin from Japanese oak sapwood. Organic letters https://doi.org/10.1021/ol500146a PMID: 24564450
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