Two New Spirostanol Saponins from Reineckia carnea |
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| Authors: | Zhong‐Quan Zhang Jian‐Chao Chen Xian‐Ming Zhang Zhong‐Rong Li Ming‐Hua Qiu |
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| Institution: | 1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, P.?R. China, (phone: +86‐871‐5223257;2. fax: +86‐871‐5223255);3. Graduate University of Chinese Academy of Sciences, Beijing 100049, P.?R. China |
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| Abstract: | Two new spirostanol saponins, (1β,3β,5β,25S)‐spirostan‐1,3‐diol 1‐(β‐D ‐xylopyranoside) ( 1 ) and (1β,3β,5β,25S)‐spirostan‐1,3‐diol 1‐α‐L ‐rhamnopyranosyl‐(1→2)‐β‐D ‐fucopyranoside] ( 2 ), along with two known compounds, (1β,3β,5β,25S)‐spirostan‐1,3‐diol 1‐α‐L ‐rhamnopyranosyl‐(1→2)‐β‐D ‐xylopyranoside] ( 3 ) and (1β,3β,4β,5β,25S)‐spirostan‐1,3,4,5‐tetrol 5‐(β‐D ‐glucopyranoside) ( 4 ) were isolated from the whole plant of Reineckia carnea. The structures of the new steroids were determined by detailed analysis of their 1D‐ and 2D‐NMR spectra and chemical methods, and by comparison with spectral data of known compounds. Compounds 3 and 4 were isolated from the genus Reineckia for the first time. |
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| Keywords: | Reineckia carnea Spirostanol saponins Saponins Steroids Glycosides |
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