Medicine for relieving spasm and pain and preparation process thereof
A technology of antispasmodic and medicine, which is applied in the field of combination medicine and preparation for headache, and treatment of abdominal smooth muscle spasm pain, and can solve problems such as difficult large-scale preparation
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[0044] 1. Preparation of glycyrrhetinic acid: Boil the coarse licorice powder with water for 3 times, filter the medicinal solution, add concentrated sulfuric acid until no precipitation occurs, place, filter, brown precipitate, wash with water and dry to obtain crude glycyrrhizic acid. Reflux extraction with acetone for 3 times to obtain acetone extract, let it cool, add 20% KOH ethanol solution to weak alkalinity under stirring, let it stand, and precipitate crystals, filter the crystals (tripotassium glycyrrhizinate), dry, add glacial acetic acid Dissolve in heat, let cool, precipitate crystals, filter to obtain monopotassium glycyrrhizinate, add 5% sulfuric acid, heat for 10 hours, filter with suction, wash with water until neutral, dry to obtain crude white glycyrrhetinic acid, and then dissolve it in hot water In chloroform, filter while it is hot, let the chloroform solution cool, and elute with chloroform on an aluminum peroxide chromatography column to obtain glycyrrhe...
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