Two new ionone glycosides from the roots of Rehmannia glutinosa Libosch. |
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Authors: | Wei-Sheng Feng Meng Li Xiao-Ke Zheng Na Zhang Kai Song Jian-Chao Wang |
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Institution: | 1. School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450046, P.R. China;2. School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, P.R. China |
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Abstract: | Two new ionone glycosides, named frehmaglutoside G (1) and frehmaglutoside H (2), together with six known compounds, rehmapicroside (3), sec-hydroxyaeginetic acid (4), dihydroxy-β-ionone (5), trihydroxy-β-ionone (6), rehmaionoside A (7) and rehmaionoside C (8), were isolated from the 95% EtOH extract of the dried roots of Rehmannia glutinosa Libosch. Their structures were determined on the basis of extensive spectroscopic analyses, including HR-ESI-MS, UV, IR, 1D and 2D NMR (1H–1H COSY, HSQC, HMBC and NOESY) methods. The absolute configurations were confirmed via the circular dichroism spectra. |
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Keywords: | Rehmannia glutinosa Libosch roots ionone glycosides |
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