Lysine aescin saponin, its preparation and use
A technology of lysine and aescin, which is applied in the direction of pharmaceutical formulations, medical preparations containing active ingredients, pill delivery, etc., and can solve problems such as small compounds
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Embodiment 1
[0023] The preparation of embodiment 1β-escin and different-escin
[0024] 1. Cholesterol precipitation method
[0025] Sala seed powder, with 5 times the amount of dilute ethanol with a concentration of 50% to 70v / v%, stirred and extracted three times, each time for 4 hours, collected and combined extracts, vacuum recovered ethanol to a certain volume, and determined by high performance liquid chromatography Extract the content of β-escin in the concentrated solution, then add cholesterol with β-escin: cholesterol 1: 1.2 ratio under stirring, stir for 2 hours after adding, leave overnight, collect the cholesterol precipitate the next day, use Wash with water until colorless, collect by centrifuge and dry at 60°C. After the precipitate is dried, it is treated with chloroform or toluene to dissolve the cholesterol into the solvent, while the salts of aescin (sodium and potassium salts) still exist in solid form. After wiping off the residual solvent, dissolve it in water, pas...
Embodiment 2
[0039] The preparation of embodiment 2 lysine β-escin and lysine iso-escin
[0040] (1) Preparation of lysine β-escin
[0041] Grind β-escin crystals, take 56.55g (0.05mol) of fine powder, put 500ml of distilled water in a 1000ml three-necked bottle, slowly add L-lysine solution under stirring [50ml of distilled water contains 7.31g L-lysine (0.05mol)], after β-escin is completely dissolved, adjust the pH of the solution to 5.5-7.5 with the remaining lysine solution (total consumption of L-lysine 0.049mol), then add the solution without Water ethanol, so that the alcohol content reaches 80%, vacuum-concentrate to about 100ml below 50°C, add 500ml of anhydrous alcohol, then vacuum-concentrate to 200ml, and refrigerate to obtain lysine β-escin 57.95g, yield It is 90.7%, and its content is 99.5% as determined by liquid chromatography. Physical and chemical characteristics:
[0042] mp.217~219.5℃
[0043] 13 C-NMR (δ / ppm): 91.2 (C 3 ), 122.5 (C 12 ), 142.8 (C 13 ), 79.1 (C...
Embodiment 3
[0055] Lysine Aescin 10mg
[0056] Appropriate amount of water for injection
[0057] The total lysine aescin is dissolved in water for injection, and freeze-dried according to the conventional process of freeze-dried powder injection.
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