18β-Glycyrrhetinic Acid is a natural glucocorticoid receptor agonist, which can bind to intracellular glucocorticoid receptors and mimic the effects of endogenous glucocorticoids, thereby exerting anti-inflammatory and immunomodulatory effects . In addition, 18β-Glycyrrhetinic Acid can exert its antiviral effect through various ways, including inhibiting virus invasion, replication, transcription and release.
18β-Glycyrrhetinic Acid (18β-glycyrrhizic acid) has a wide range of biological and pharmacological activities. The following is a detailed introduction of its main uses:
1. Antiviral effect: 18β-Glycyrrhetinic Acid is a broad-spectrum antiviral drug that can inhibit a variety of viruses (such as hepatitis B virus, human immunodeficiency virus, influenza virus, etc.). Studies have shown that 18β-Glycyrrhetinic Acid can inhibit the processes of virus invasion, replication, transcription and release, thereby exerting its antiviral effect.
2. Antioxidant effect: 18β-Glycyrrhetinic Acid has obvious antioxidative effect, which can scavenge free radicals and reduce oxidative damage, thereby protecting cells from oxidative damage. Studies have shown that 18β-Glycyrrhetinic Acid can reduce oxidative stress indicators (such as MDA, ROS, etc.), increase the activity of antioxidant enzymes (such as SOD, CAT, etc.), thereby exerting its antioxidant effect.
3. Anti-inflammatory effect: 18β-Glycyrrhetinic Acid has obvious anti-inflammatory effect, which can inhibit the production of inflammatory mediators and the occurrence of inflammatory response, thereby reducing inflammatory symptoms. Studies have shown that 18β-Glycyrrhetinic Acid can inhibit the production of various inflammatory mediators (such as IL-1β, TNF-α, etc.), reduce inflammatory cell infiltration and tissue damage, thereby exerting its anti-inflammatory effect.
4. Anti-tumor effect: 18β-Glycyrrhetinic Acid has obvious anti-tumor effect, which can inhibit the growth, proliferation and invasion of tumor cells, thereby exerting anti-tumor effect. Studies have shown that 18β-Glycyrrhetinic Acid can inhibit the growth and proliferation of various tumor cells (such as breast cancer, lung cancer, colon cancer, etc.), induce tumor cell apoptosis and cell cycle arrest, thereby exerting its anti-tumor effect.
5. Hepatoprotective effect: To reduce liver cell damage, reduce alanine transferase (AST) and pyruvate transferase in the liver, inhibit oxidative stress and inflammatory response of liver cells, and reduce liver damage and fibrosis. It is widely used in the field of liver disease treatment and liver protection health products.
6. Hypoglycemic effect: 18β-Glycyrrhetinic Acid can promote insulin secretion and tissue sensitivity to insulin, thereby reducing blood sugar levels. It is widely used in the field of treating diabetes and health products.
7. Blood lipid-lowering effect: 18β-Glycyrrhetinic Acid can reduce serum total cholesterol, triacylglycerol and low-density lipoprotein cholesterol levels, thereby reducing the risk of cardiovascular diseases. It is widely used in the field of treating hyperlipidemia and health products.
8. Cosmetic effect: 18β-Glycyrrhetinic Acid can promote the synthesis of collagen and the regeneration of skin cells, and has the functions of skin moisturizing, whitening and anti-aging. It is widely used in cosmetics and skin care products.
18β-Glycyrrhetinic Acid (18β-glycyrrhetinic acid) is a triterpene compound with a wide range of pharmacological activities, which can be obtained from licorice extract or chemical synthesis. The following are some known synthetic methods of 18β-glycyrrhizic acid: It can be purified from licorice extract. The following is a basic procedure for extracting 18β-Glycyrrhetinic Acid from licorice extract:
(1) Preparation of licorice extract: the dry root powder of licorice is mixed with an appropriate amount of water, and operations such as repeated soaking, filtration, concentration and drying are performed to prepare licorice extract.
(2) Pretreatment: Add licorice extract to ethanol or acetone, and remove impurities and substances soluble in ethanol or acetone by heating and stirring.
(3) Separation and purification: add the pretreated licorice extract into a liquid-liquid dispenser, and add an appropriate amount of organic solvent (such as n-hexane or ether) for separation and purification. The organic layer was separated, and the organic solvent was removed to obtain a preliminary purified product of 18β-Glycyrrhetinic Acid.
(4) Crystallization: Dissolve the preliminary purified product in ethanol or acetone, and recrystallize to obtain the crystallized product of 18β-Glycyrrhetinic Acid.
(5) Property detection: Use spectroscopic techniques (such as mass spectrometry and infrared spectroscopy) to detect and confirm the structure and purity of 18β-Glycyrrhetinic Acid.
18β-Glycyrrhetinic Acid (18β-glycyrrhizic acid) is a triterpenoid with certain reactive properties. The following are its main reactivity properties:
1. Acidity and alkalinity: 18β-Glycyrrhetinic Acid contains carboxyl group (-COOH), so it has certain acidity. Under alkaline conditions, it can be hydrolyzed by alkali to generate corresponding salts and derivatives of 18β-Glycyrrhetinic Acid.
2. Oxidation reaction: 18β-Glycyrrhetinic Acid is easily oxidized. If subjected to the action of oxidizing agents such as hydrogen peroxide, ozone, oxygen, etc., it will undergo oxidation reaction and produce different degrees of oxidation products. In addition, it can also react with some oxidants such as chromic acid, potassium persulfate, etc., and undergo oxidation reactions to generate corresponding oxidation products.
3. Reduction reaction: 18β-Glycyrrhetinic Acid is prone to reduction reaction, and it can be reduced to the reduced form of 18β-Glycyrrhetinic Acid, such as 18β-Glycyrrhetinic Acid 3-ketone, by reducing agents such as sodium sulfite and hydrogen gas.
4. Alkylation reaction: 18β-Glycyrrhetinic Acid can undergo alkylation reaction, such as methyl iodide, ethyl iodide and other alkylating reagents, to generate the corresponding alkylation product of 18β-Glycyrrhetinic Acid.
5. Esterification reaction: The carboxyl group in 18β-Glycyrrhetinic Acid can react with some alcohols to form corresponding ester compounds.
6. Reductive cleavage reaction: 18β-Glycyrrhetinic Acid can undergo reductive cleavage reaction under the action of reducing agent to generate triterpenoids with different skeletons.