Preparation method of glycyrrhetinic acid
The invention relates to a preparation method of glycyrrhetinic acid, which comprises the steps of: hydrolyzing glycyrrhizic acid crude products as raw materials by adding dilute sulphuric acid to generate glycyrrhetinic acid, wherein microwave radiation is adopted for heating in the hydrolyzation p...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a preparation method of glycyrrhetinic acid, which comprises the steps of: hydrolyzing glycyrrhizic acid crude products as raw materials by adding dilute sulphuric acid to generate glycyrrhetinic acid, wherein microwave radiation is adopted for heating in the hydrolyzation process which is carried out in a closed container; eluting hydrolyzed products by using chloroform, and rotationally evaporating the chloroform to obtain the glycyrrhetinic acid crude products. Reaction is carried out under different conditions, and the conversion rate can reach 60-90 percent. The invention has the advantages of simple operation, time saving, high conversion rate and low requirements on purity of the glycyrrhizic acid crude products as the raw materials. The preparation method can be applied to preparing the glycyrrhetinic acid. |
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