Clematomandshurica saponin E, a new triterpenoid saponin from Clematis mandshurica |
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Authors: | Dong Fang-Yan Cui Guo-He Zhang Ying-Hua Zhu Ruo-Nan Wu Xiu-Juan Sun Ting-Ting Wang Wei |
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Institution: | Institute of Phytochemistry, Jilin Academy of Chinese Medicine Sciences, Changchun, China. |
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Abstract: | A new triterpenoid saponin, clematomandshurica saponin E, together with four known saponins were isolated and characterized from the roots and rhizomes of Clematis mandshurica (Ranunculaceae), a commonly used traditional Chinese medicine with anti-inflammatory and antirheumatoid activities. On the basis of spectroscopic analysis, including HR-ESI-MS, IR, 1D, and 2D NMR spectral data and hydrolysis followed by chromatographic analysis, the structure of the new triterpenoid saponin was elucidated as 3-O-α-L-rhamnopyranosyl-(1 → 6)-β-D-glucopyranosyl-(1 → 4)-β-D-glucopyranosyl-(1 → 4)-β-D-ribopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)-α-L-arabinopyranosyl oleanolic acid 28-O-β-D-glucopyranosyl-(1 → 6)-β-D-glucopyranoside. |
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