Dehydroandrographolide derivative composition and preparation method as well as application thereof
A technology of dehydrated Andrographis paniculata and composition, applied in the field of medicine, can solve the problems of affecting purity, poor recrystallization effect, affecting the stability of ester bonds, etc., and achieve the effects of cardiovascular protection, stability improvement, and good curative effect.
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Embodiment 1
[0052] Example 1 Preparation of Dehydroandrographolide Glycine Half Ester Hydrochloride
[0053] 1) Dissolve 6.64g dehydroandrographolide, 10.5g N-benzyloxycarbonyl-glycine in 100ml N,N-dimethylformamide, then add 10.3g dicyclohexylcarbodiimide and 0.24g4 -Dimethylaminopyridine, warmed to room temperature and stirred for 8h, filtered, and the filtrate was evaporated to dryness under reduced pressure; the residue was separated by silica gel column chromatography, and eluted with a mixed solvent of ethyl acetate:petroleum ether (1:3 by volume) , collected the target components, and concentrated to dryness under reduced pressure to obtain 8.8 g of 3,19-0-bis-(N-benzyloxycarbonylglycyl)-dehydroandrographolide;
[0054] 2) Dissolve 8.8 g of 3,19-0-bis-(N-benzyloxycarbonylglycyl)-dehydroandrographolide in 100 ml of ethanol, add 1.2 g of 10% palladium carbon, and store at room temperature under a hydrogen atmosphere of 1 atmosphere After stirring for 3 hours, the palladium carbon wa...
Embodiment 2
[0055] Example 2 Dehydroandrographolide derivative composition freeze-dried powder injection
[0056] 1) Dissolve 0.3 g of disodium edetate in 500 ml of water for injection, add 40 g of dehydrated andrographolide glycine half ester hydrochloride prepared in Example 1, stir to dissolve, and obtain a solution;
[0057] 2) Add 30g of mannitol to the solution to dissolve it, adjust the pH value to 7.5, add water for injection to 1000ml, filter the resulting liquid deeply, divide the liquid into vials, 1ml per bottle, and transfer to the freezer in the dryer;
[0058] 3) Freeze-dry the liquid medicine, press the plug, and seal it to obtain the product.
Embodiment 3
[0059] Example 3 Dehydroandrographolide derivative composition freeze-dried powder injection
[0060] 1) Dissolve 0.5 g of edetate calcium sodium in 600 ml of water for injection, add 100 g of dehydrated andrographolide glycine half ester hydrochloride prepared in Example 1, stir to dissolve, and obtain a solution;
[0061] 2) Add 20g of lactose to the solution to dissolve it, adjust the pH value to 7.0, add water for injection to 1000ml, filter the resulting liquid deeply, divide the liquid into vials, 1ml per bottle, and transfer to freeze-drying Inside the machine;
[0062] 3) Freeze-dry the liquid medicine, press the plug, and seal it to obtain the product.
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