One new triterpenoid from biotransformation product of glycyrrhizic acid |
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Authors: | Kang Li-Ping Zhang Jie Yu He-Shui Huang Hong-Zhi Wang Yong-Ze Ma Bai-Ping |
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Affiliation: | Beijing Institute of Radiation Medicine, Beijing, China. |
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Abstract: | A new triterpenoid compound (1) and a known compound (2) were isolated from the product of biotransformation of glycyrrhizic acid by Aspergillus niger. On the basis of the 1D and 2D NMR ((1)H-(1)H COSY, HSQC, HMBC and NOESY) and MS spectrometry, their structures were established as 7beta, 15alpha-dihydroxy-3,11-dioxo-oleana-12-en-30-oic acid (1) and 15alpha-hydroxy-3,11-dione-oleana-12-en-30-oic acid (2), respectively. |
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