17-Hydro-9-dehydroandrographolide-3-sulfate compound, preparation method and pharmaceutical use thereof
A technology of andrographolide, sulfate ester, applied in the directions of drug combination, antipyretic, organic chemistry, etc., can solve the problems such as solubility and stability are not particularly good, and achieve the guarantee of pharmacological activity, good water solubility and high productivity. Effect
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Embodiment 1
[0068] Get andrographolide, add 5.5 times the amount of acetic anhydride (62%) and glacial acetic acid (38%) to dissolve, and under stirring, slowly add 4.5 times the amount of sulfuric acid dropwise at a rate of 1.6ml per minute for 1g andrographolide (52%) and glacial acetic acid (48%), mix evenly, adjust the temperature of the reactor at 16° C., and place it for 90 minutes for sulfonation. Add an equal amount of purified water, stir well, adjust the pH to about 7.0 with 33% NaOH, add 95% ethanol to make the alcohol content reach more than 82%, recover ethanol under reduced pressure, and separate the aqueous solution through macroporous adsorption resin and ODS column chromatography. Gradient elution with water: ethanol, the proportion of water is 80-20%, the proportion of ethanol is 20-80%, the eluate is collected in sections, the same components are combined, and crystallized to obtain 17-hydrogen-9-dehydroandrographis paniculata Sodium lactone-3-sulfate, its sodium salt f...
Embodiment 2
[0076] Get andrographolide, add 5.5 times the amount of acetic anhydride (60%) and glacial acetic acid (40) to dissolve, and under stirring, add 3.5 times the amount of sulfuric acid (52%) by spraying at a speed of 2.1ml per minute with 1g andrographolide Mix with glacial acetic acid (48%), adjust the temperature of the reaction kettle at 17°C, place it for 80 minutes for sulfonation, add an equal amount of purified water, pour it into saturated sodium chloride solution, and pass through macroporous adsorption resin, Sephadex LH-20 column chromatography separation, gradient elution with water: methanol, the ratio of water is 80-20%, the ratio of methanol is 20-80%, the eluate is collected in sections, the same components are combined, crystallized, and 17 - Sodium Hydrogen-9-Dehydroandrographolide-3-sulfate.
Embodiment 3
[0078] Get andrographolide, add 4.5 times the amount of acetic anhydride to dissolve, and under stirring, add 3.2 times the amount of sulfuric acid (55%) and glacial acetic acid (45%) by atomization at a rate of 2.1 ml per minute for 1 g of andrographolide , Mix well, adjust the temperature of the reactor at 16°C, and place it for 90 minutes for sulfonation. The reactant was poured into a saturated sodium chloride solution, the precipitate was washed with a saturated sodium chloride solution and water respectively, the solid was refluxed with chloroform, the insoluble was dissolved by adding absolute ethanol, the alcohol insoluble was removed, the ethanol was recovered, and crystallized to obtain Sodium 17-hydro-9-dehydroandrographolide-3-sulfate.
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