A pharmaceutical composition with antitussive effect and its preparation method and application
A composition and antitussive technology are applied in the directions of drug combinations, medical preparations containing active ingredients, pharmaceutical formulations, etc., which can solve the problems of inconvenience in taking, low content of active ingredients, difficult quality control, etc. Simple composition, enhanced antitussive effect
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Embodiment 1
[0029] Embodiment 1: the preparation of centristine
[0030] The preparation method of centristine used in the examples is prepared with reference to the document "Journal of Natural Products 2006, 69, 749-754".
[0031] Take 1 kg of Baibu produced in Yudu, Jiangxi, and reflux it with 95% ethanol (5 L) for 3 times, each time for 2 hours. The extracts were combined, and the solvent was recovered by a rotary evaporator to obtain the total extract. The total extract was suspended in water (600 mL), extracted 3 times with hexane and ethyl acetate successively (200 mL each time), combined the ethyl acetate extracts, and recovered the solvent with a rotary evaporator to obtain the ethyl acetate extraction fraction ( 26g). Pass the ethyl acetate extraction part through a silica gel column, elute with hexane-ethyl acetate 20:1, 10:1, 5:1, 2:1 (each 2000mL), concentrate with a rotary evaporator 5:1 and elute part to obtain centristine (2.6g).
Embodiment 2
[0032] Example 2: Preparation of the composition of centristine-mogroside IV
[0033] Take tribucinine (3.96g, 0.01mmol) and mogroside IV (purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.) (11.24g, 0.01mmol), and mix them with a vortex shaker for 3 minutes to obtain 15.20 g of the combination of neobine and mogroside IV (molar ratio 1:1).
Embodiment 3
[0034] Example 3: Preparation of the composition of centristine-mogroside IV
[0035] Take centristine (3.96g, 0.01mmol) and mogroside IV (purchased by Shanghai Aladdin Biochemical Technology Co., Ltd.) (22.48g, 0.02mmol), and mix it with a vortex shaker for 5 minutes to obtain centristine Alkaline and mogroside IV composition 26.44g (molar ratio 1:2).
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