Two new triterpenoid saponins from ginseng medicinal fungal substance |
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Authors: | Wei Xu Jin-Hui Zhang Xin-Wen Wang Xiao-Li Liu Xin Liu |
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Institution: | College of Pharmacy, Changchun University of Chinese Medicine, Changchun 130117, China |
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Abstract: | Two new dammarane-type triterpenoid saponins, namely ginsenosides Rb4 (1) and Rb5 (2), were isolated from ginseng medicinal fungal substance. The structures of 1 and 2 were established as 3β,12β,20(S)-trihydroxydammar-24(25)-ene-3-O-α-d-glucopyranosyl-(1→4)-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl]-20-O-β-d-glucopyranoside and 3β,12β,20(S)-trihydroxydammar-24(25)-ene-3-O-α-d-glucopyranosyl-(1→4)-α-d-glucopyranosyl-(1→4)-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl]-20-O-β-d-glucopyranoside on the basis of spectroscopic analysis and chemical analysis, respectively. |
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Keywords: | Araliaceae ginseng triterpenoid saponin ginsenoside Rb4 ginsenoside Rb5 |
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