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A new phenylpropanoid glucoside from the aerial parts of Lygodium japonicum

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Pages 286-292 | Received 20 Jul 2011, Accepted 14 Dec 2011, Published online: 17 Jan 2012
 

Abstract

A new compound, 4-O-caffeoyl-d-glucopyranose (1), and a new natural product, 3-O-caffeoyl-d-glucopyranose (2), together with six known compounds (38) were isolated from the aerial parts of Lygodium japonicum. Their structures were elucidated on the basis of extensive spectroscopic data analyses. The oxygen radical absorbance capacity assay was applied to evaluate their antioxidative capacities in vitro, which revealed that 18 showed strong antioxidative properties.

Acknowledgements

This work was financially supported by the Fund of National Science and Technology Development (No. 2006BAIO6A20-09). The authors are grateful to Dr Hui-nan Zhao, Dr Ming-yang Liu, and Dr Zhen-qiang Mu, Institute of Traditional Chinese Medicine and Natural Products, Jinan University, for measuring the HR-ESI-MS, ESI-MS, and NMR spectral data.

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