CN117624057A - Amorphous levosimendan sodium salt and preparation method and application thereof - Google Patents

Amorphous levosimendan sodium salt and preparation method and application thereof Download PDF

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Publication number
CN117624057A
CN117624057A CN202311620270.8A CN202311620270A CN117624057A CN 117624057 A CN117624057 A CN 117624057A CN 202311620270 A CN202311620270 A CN 202311620270A CN 117624057 A CN117624057 A CN 117624057A
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levosimendan
sodium salt
amorphous
sodium
preparation
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Inventor
刘善奎
宗童欣
李胜超
王静
蒋元勋
董广金
姜明明
李铁军
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Shandong Taihe Pharmaceutical Technology Co ltd
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Shandong Taihe Pharmaceutical Technology Co ltd
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Abstract

The invention belongs to the field of pharmaceutical preparations, and provides an amorphous levosimendan sodium salt, a preparation method and application thereof, wherein the amorphous levosimendan sodium salt has no characteristic diffraction peak in an X-ray powder diffraction spectrogram, and the levosimendan sodium salt provided by the invention has good solubility, purity of over 99.5% and good stability; the preparation method is simple and convenient, easy to realize industrial amplification, has the yield of more than 95 percent, and is suitable for industrial production.

Description

Amorphous levosimendan sodium salt and preparation method and application thereof
Technical Field
The invention belongs to the field of pharmaceutical preparations, and provides an amorphous levosimendan sodium salt, a preparation method and application thereof.
Background
Heart failure is the manifestation of the progression of a variety of cardiovascular diseases to the end stage, with the mortality rate remaining high throughout the year, threatening the life safety of the patient. The existing positive myodynamia medicines in the traditional treatment influence myocardial expansion, increase myocardial oxygen consumption and the like, which are limited in clinical use, and the appearance of the calcium ion sensitizer-levosimendan can improve heart failure symptoms under the condition of not increasing myocardial oxygen consumption and stabilizing abnormal hemodynamics. The safety and curative effect of the medicine are reliable as shown by a plurality of experimental data, and the recommendation of the reasonable medicine guidelines for heart failure (second edition) is obtained.
Levosimendan is a calcium-sensitized anti-acute heart failure drug developed by the company Orion, euclidean, finland, and is an effective positive inotropic calcium sensitizer, and is mainly used for clinically short-term treatment of acute decompensated heart failure requiring an increase in myocardial contractility. The chemical name is (R) - [ [4- (1, 4,5, 6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl) phenyl ]]Hydrazono group]Malononitrile of formula C 14 H 12 N 6 O has the following structural formula:
levosimendan is a yellow crystalline powder which is poorly soluble in water and readily degradable, with a pKa of 6.26. The existing commercial levosimendan injection uses absolute ethyl alcohol and polyethylene glycol 400 as solvents, and is used after 5% glucose injection is used for clinical use. However, the concentration of ethanol is diluted, which is likely to cause the precipitation of levosimendan from the compatible solution, so that insoluble particles exceed the standard, and the medication safety is affected. In addition, ethanol-containing formulations are irritating to both blood vessels and muscles during intravenous injection, and cause hemolysis in severe cases.
Patent CN108289832B adopts sulfobutyl ether-beta-cyclodextrin sodium for solubilization to prepare Cheng Zuoxi Mondand freeze-dried powder injection, but the cyclodextrin inclusion compound solubilization scheme requires high dosage of solubilizer, drug: the mass ratio of the sodium sulfobutyl ether-beta-cyclodextrin is up to 1:70, and the influence and the dosage of cyclodextrin products on the kidney safety of human bodies are closely related, so that the use of high dosage brings potential safety hazards.
Patent CN111548310B discloses a preparation method of a crystal form of levosimendan Meng Danna, which is to prepare Cheng Zuoxi of a sodium salt of levosimendan, solve the problem of insolubility of levosimendan Meng Danshui, and adopt a salt forming method or a recrystallization method to prepare a crystal form a of levosimendan Meng Danna, so that the yield is low.
Patent CN111718299B discloses a preparation method of a levocetirizine Meng Danna crystal form B, which is the same as patent CN111548310B and has lower actual yield.
Patent CN 112500353B discloses a preparation method of an esterified prodrug of levosimendan, and the designed compound needs to be hydrolyzed and metabolized in a human body to be converted into levosimendan to exert pharmacological effects.
Since different crystal forms of chemical drugs affect the appearance, solubility and bioavailability of the drugs, it is desirable to provide an amorphous levosimendan sodium salt with high solubility, good stability and high yield, and a preparation method and application thereof.
Disclosure of Invention
Aiming at the defects of the technology, the inventor provides an amorphous levosimendan sodium salt, a preparation method and application thereof, wherein the amorphous levosimendan sodium salt has no characteristic diffraction peak in an X-ray powder diffraction spectrogram, and the levosimendan sodium salt provided by the invention has good solubility, purity of over 99.8 percent and good stability; sodium carbonate is commonly used as a stabilizer and a pH regulator of injection, has good safety, is used as weak base, has mild reaction conditions, and has few degradation impurities and high yield. The solvent required by the provided preparation method is water, the preparation method is simple and convenient, the industrial amplification is easy to realize, the yield is more than 98 percent, and the preparation method is suitable for industrial production.
The inventor has submitted a patent application with publication number of CN116473930A, namely levosimendan for injection and a preparation method thereof, the technical scheme uses one or more of anhydrous sodium carbonate, choline hydroxide, sodium hydroxide, tromethamine and arginine as a cosolvent, and the aim of solubilization is achieved by adjusting the pH value by the cosolvent, but the cosolvent in the scheme does not react with the levosimendan and is only a simple composition. After further research, the inventor finds that no related report exists on the salification of sodium carbonate and levosimendan at present, but the preparation of the salt of levosimendan and sodium carbonate can better improve the solubility and the stability and greatly shorten the preparation time compared with the composition, so that the following specific technical scheme is finally obtained:
the invention mainly provides an amorphous levosimendan sodium salt, which has the following structural formula:
in particular, the amorphous levosimendan sodium salt is a salt formed by dehydrogenating the hydrazono group of levosimendan to form an ionic bond.
The above-mentioned compound is an amorphous compound, and its internal molecules are not periodically arranged, so that it has no fixed melting point and no lattice structure. This disordered distribution prevents the amorphous compound from diffracting the X-rays.
Specifically, the amorphous levosimendan sodium salt has no obvious and sharp characteristic diffraction peak in an XRD spectrum, 2 theta has a wide and weak diffraction peak between 20 degrees, the sharp diffraction peak with extremely weak signals is caused by sodium bicarbonate, and equimolar sodium bicarbonate is generated in the process of preparing the levosimendan sodium salt by using sodium carbonate.
Specifically, the Differential Scanning Calorimetry (DSC) spectrum of the amorphous levosimendan sodium salt compound has 2 endothermic peaks at 51.5 ℃ and 138.7 ℃, which are caused by coexisting sodium bicarbonate.
The amorphous levosimendan sodium salt solves the technical problem that the levosimendan is insoluble in water in the prior art, has the advantage of good water solubility, and can avoid the use of ethanol or other organic solvents in the preparation production, thereby avoiding adverse effects caused by the use of the ethanol or other organic solvents.
In addition, the inventor also provides a preparation method of the amorphous levosimendan sodium salt, which comprises the following specific steps: adding levosimendan and sodium carbonate into a reaction solvent, stirring for reaction at 5-40 ℃, filtering by using a 0.22 mu m polyethersulfone filter membrane after the reaction is finished, and freeze-drying to obtain the levosimendan.
Wherein the concentration of levosimendan in the reaction system is 2mg/ml-5mg/ml, and the reaction temperature is preferably 5-15 ℃.
The molar ratio of levosimendan to sodium carbonate is from 1:1.0 to 1:1.5, preferably from 1:1.0 to 1:1.2.
The reaction solvent is water.
The present invention is not particularly limited to the lyophilization step, and either conventional lyophilization methods or the presently disclosed lyophilization methods can be used in the present invention, and the lyophilization profile that can be selected is:
step (a) Setting temperature (DEG C) Heating time (min) Duration (min) Vacuum degree (pa)
Prefreezing -50--30 60-240
Primary drying -40--10 10-100 600-1440 30-10
Analytical drying 10-40 10-120 60-480 15-5
Wherein the preferred lyophilization profile is:
step (a) Setting temperature (DEG C) Heating time (min) Duration (min) Vacuum degree (Pa)
Prefreezing -45--35 60-240
Primary drying -25--15 20-80 900-1440 20-10
Analytical drying 20-30 20-100 60-360 10-5
It is another object of the present invention to provide a pharmaceutical composition comprising the above amorphous levosimendan sodium salt compound, which composition is composed of levosimendan sodium salt and other pharmaceutically acceptable ingredients; the pharmaceutical composition is preferably freeze-dried powder.
The preparation method of the medicinal composition adopts the conventional technology, and the amorphous levosimendan sodium salt prepared by the invention is combined with pharmaceutically common auxiliary materials to prepare a usable dosage form.
For freeze-dried powder, the preferred auxiliary materials in the pharmaceutical composition are selected from one or more of povidone, cyclodextrin, sodium cyclodextrin, mannitol, sucrose, glucose, glycine and lactose as excipients; one or more of citric acid, sodium citrate, acetic acid, sodium acetate, phosphoric acid, dipotassium hydrogen phosphate, sodium hydroxide and hydrochloric acid are used as pH regulator;
still further, preferably the povidone is povidone K12, preferably the cyclodextrin is hydroxypropyl-beta-cyclodextrin, sodium sulfobutyl ether-beta-cyclodextrin.
Based on the above scheme, preferably, the levosimendan sodium salt: the weight ratio of povidone K12 is 1:1-1:40, preferably 1:4-1:20; levosimendan sodium salt: the weight ratio of the hydroxypropyl-beta-cyclodextrin or sulfobutyl ether-beta-cyclodextrin sodium is 1:1-1:90, preferably 1:10-1:40.
Based on the above-mentioned scheme, the pH is adjusted to 7.0 to 10.0, more preferably 8.5 to 9.5, with a pH adjustor.
The invention further provides a preparation method of the freeze-dried powder of the levosimendan sodium salt, which comprises the following steps:
step (1): weighing levosimendan sodium salt and excipient, dissolving in water, adding a pH regulator to adjust the pH to 7.0-10.0 after the dissolution is completed, adding water to fix the volume to the total volume, and filtering by a 0.22 mu m PES filter membrane;
step (2): and (3) subpackaging the solution obtained in the step (1) into penicillin bottles, freeze-drying, filling nitrogen, rolling and sealing.
When the freeze-dried powder injection prepared by the invention is used in specific clinical compatibility, the special stabilizer solution (citric acid solution) is matched for use, the concentration of the citric acid solution is 2-5mg/ml, preferably 3.5mg/ml, one freeze-dried powder injection is matched with one special stabilizer solution, and the stability of the freeze-dried powder injection after compatibility can be greatly improved by adding the special stabilizer solution.
The preparation method of the special stabilizer solution comprises the following steps: weighing anhydrous citric acid with prescription amount, stirring at room temperature for dissolving, constant volume filtering with 0.22 μm microporous membrane, packaging into ampoule bottle with 5 ml/branch, and sterilizing at 121deg.C for 15 min. This special stabilizer has been described in the applicant's prior application and is not described in detail by the inventors.
Compared with the prior art, the invention has the following beneficial effects:
(1) The related patent of levosimendan salt type compound is CN111548310B, CN111718299B, but the alkali used in the two patents is sodium hydroxide, sodium methoxide, sodium ethoxide or a mixture thereof, and the actual yield is below 80%. The alkali used in the invention is sodium carbonate, and the purity of the amorphous levosimendan sodium salt prepared by the invention is above 99.5%, the yield is above 95%, the solubility is high, and the stability is good.
(2) The preparation process of the amorphous levosimendan sodium salt disclosed by the invention is simple and convenient, low in equipment dependence, free from the use of organic solvents, good in reproducibility and suitable for industrial production.
(3) The invention prepares the levosimendan sodium salt and other compositions into the freeze-dried powder injection, the solvent is water, no organic solvent is used, the preparation method is simple, the industrial amplification is easy to realize, and the stability is greatly improved when the levosimendan sodium salt and other compositions are prepared into the freeze-dried powder injection.
Drawings
Figure 1 is an amorphous form of the sodium salt of levosimendan in example 2 of the present invention 1 H-NMR spectrum.
Figure 2 is an X-ray powder diffraction pattern of the amorphous levosimendan sodium salt of example 1 of the present invention.
Figure 3 is a differential scanning calorimetry thermogram of the amorphous levosimendan sodium salt of example 2 of the present invention.
Figure 4 is an HPLC purity profile of amorphous levosimendan sodium salt in example 2 of the present invention.
Detailed Description
The above-described aspects of the present invention will be described in further detail by way of the following embodiments, but it should not be construed that the scope of the above-described subject matter of the present invention is limited to the following embodiments. All techniques based on the above description of the present invention are within the scope of the present invention, and unless otherwise specified, the following examples are accomplished by conventional techniques, usually under conventional conditions or under conditions recommended by the manufacturer.
EXAMPLE 1 preparation of amorphous Levosimendan sodium salt
400ml of water was added to a reaction flask, 1.0000g of levosimendan and 0.3782g of anhydrous sodium carbonate were added to the above reaction flask, the reaction was stirred at 10.+ -. 2 ℃ for 50 minutes to obtain a yellow clear liquid, which was then filtered through a 0.22 μm polyethersulfone filter (PES filter) and freeze-dried (lyophilization procedure shown in the following table) to obtain 1.0597g of amorphous levosimendan sodium salt with a yield of 98.26% and a purity of 99.97%.
Step (a) Setting temperature (DEG C) Heating time (min) Duration (min) Vacuum degree (Pa)
Prefreezing -40 120
Primary drying -15 40 1140 20
Analytical drying 30 80 210 10
The X-ray powder diffraction pattern of the product is shown in fig. 2, and the X-ray powder diffraction pattern of the levosimendan sodium salt prepared in this example has a broad and weak diffraction peak at 20 ° at 2θ, and no characteristic diffraction peak, so that the levosimendan sodium salt is determined to be amorphous.
EXAMPLE 2 preparation of amorphous Levosimendan sodium salt
350ml of water is measured and added into a reaction bottle, 1.0003g of levosimendan and 0.4160g of anhydrous sodium carbonate are added into the reaction bottle, the mixture is stirred and reacted for 45min at the temperature of 10+/-2 ℃ to obtain yellow clear liquid, after the reaction is finished, the yellow clear liquid is filtered by a PES (polyether sulfone) filter membrane with the thickness of 0.22 mu m, and the amorphous levosimendan sodium salt 1.0745g is obtained through freeze drying, the yield is 99.63%, and the purity is 99.96%.
The levosimendan sodium salt prepared in this example 1 The H-NMR spectrum is shown in figure 1, and the hydrogen of the hydrazono group on the structure of the levosimendan is replaced by sodium ions to generate the levosimendan sodium salt; the differential scanning calorimetric diagram is shown in figure 3, wherein 2 endothermic peaks exist at 51.5 ℃ and 138.7 ℃, and the peaks are caused by coexisting sodium bicarbonate, and other endothermic peaks are absent; the HPLC purity profile is shown in FIG. 4, and the purity of the levosimendan sodium salt is 99.96%.
EXAMPLE 3 preparation of amorphous Levosimendan sodium salt
300ml of water is measured and added into a reaction bottle, 1.0002g of levosimendan and 0.4538g of anhydrous sodium carbonate are added into the reaction bottle, the mixture is stirred and reacted for 50min at the temperature of 10+/-2 ℃ to obtain yellow clear liquid, after the reaction is finished, the yellow clear liquid is filtered by a PES (polyether sulfone) filter membrane with the thickness of 0.22 mu m, and the amorphous levosimendan sodium salt 1.0735g is obtained through freeze drying, and the yield is 99.52 percent and the purity is 99.94 percent.
EXAMPLE 4 preparation of amorphous Levosimendan sodium salt
500ml of water was added to the reaction flask, 1.0005g of levosimendan and 0.3782g of anhydrous sodium carbonate were added to the above-mentioned reaction flask, and the mixture was stirred at 15.+ -. 2 ℃ for 50 minutes to obtain a yellow clear liquid, which was then filtered through a 0.22 μm PES filter membrane after completion of the reaction, and freeze-dried to obtain 1.0416g of amorphous levosimendan sodium salt, with a yield of 96.53% and a purity of 99.91%.
EXAMPLE 5 preparation of amorphous Levosimendan sodium salt
200ml of water was added to a reaction flask, 1.0002g of levosimendan and 0.4538g of anhydrous sodium carbonate were added to the above reaction flask, and the mixture was stirred at 20.+ -. 2 ℃ for 40min to obtain a yellow clear liquid, which was then filtered through a 0.22 μm PES filter membrane after completion of the reaction, and freeze-dried to obtain 1.0691g of amorphous levosimendan sodium salt, with a yield of 99.11% and a purity of 99.86%.
Comparative example 1 preparation of form B of levetiracetam Meng Danna
Into a 100ml flask, 0.7g of sodium hydroxide and 30ml of ethanol were added, and the mixture was stirred to obtain a sodium hydroxide ethanol solution, and into a 250ml flask, 5.0004g of levosimendan, 25ml of ethanol, 25ml of isopropyl alcohol were added, and the mixture was dissolved by stirring at room temperature. Sodium hydroxide methanol solution is added dropwise at room temperature, and the reaction is carried out for about 5 hours after the dropwise addition. The mixture was filtered and the filter cake was washed with 5ml of methanol. Drying under reduced pressure at 40 ℃ for 3 hours to obtain 3.7655g of the levocetirizine Meng Danna crystal form B, wherein the weight yield is 69.82%.
According to CN111718299B, the actual yield is far lower than 94%, the hydrolysis impurity OR-1420 of the sterile freeze-dried powder prepared by the levosimendan sodium crystal form B is over 0.15%, the redissolution time is about 90s, and an alcohol solvent is needed in the preparation process, so that the problem of organic solvent residue possibly exists;
the hydrolysis impurity OR-1420 of the aseptic freeze-dried powder prepared by the amorphous levosimendan sodium of the patent is below 0.1%, the stability is better, the redissolution time is about 40s, and the use is more convenient.
Preparation of amorphous Levosimendan sodium salt pharmaceutical composition of application example 1
(1) Prescription of prescription
Prescription composition Dosage of
EXAMPLE 1 preparation of Levosimendan sodium salt 0.27g
Povidone K12 (Basiff) 1.00g
Mannitol (Merck) 5.00g
Water for injection To 100ml
(2) Preparation process
Taking the prescription amount of levosimendan sodium salt, povidone K12 and mannitol in a eggplant-shaped bottle, adding 90ml of water for injection, stirring in a water bath at the temperature of 10+/-2 ℃ for 30min, obtaining clear liquid after complete dissolution, fixing the volume of the water for injection to 100ml, filtering with a 0.22 mu m polyether sulfone (PES) filter membrane, subpackaging into penicillin bottles, 5 ml/bottle, half-pressing, freeze-drying, and sealing by a nitrogen-filled gland, wherein the water content is controlled below 1.5%.
Preparation of amorphous Levosimendan sodium salt pharmaceutical composition
(1) Prescription of prescription
Prescription composition Dosage of
EXAMPLE 2 preparation of Levosimendan sodium salt 0.27g
Povidone K12 (Basiff) 2.00g
Citric acid (Luo Fu medicine) Proper amount of
Water for injection Constant volume to 100ml
(2) Preparation process
Taking the prescription amount of povidone K12 and levosimendan sodium salt in a eggplant-shaped bottle, adding 90ml of injection water, stirring in a water bath at the temperature of 10+/-2 ℃ for 30min, obtaining yellow clear liquid after complete dissolution, slowly dripping a proper amount of 1M citric acid solution to adjust the pH value to 9.0, fixing the volume of the injection water to 100ml, filtering with a 0.22 mu M polyether sulfone (PES) filter membrane, subpackaging into penicillin bottles, 5 ml/bottle, half-pressing a plug, freeze-drying, filling nitrogen and sealing a gland, and controlling the water content to be below 1.5%.
Application example 3 preparation of amorphous Levosimendan sodium salt pharmaceutical composition
(1) Prescription of prescription
Prescription composition Dosage of
EXAMPLE 3 preparation of Levosimendan sodium salt 0.27g
Hydroxypropyl-beta-cyclodextrin (Zibo Qianlie) 2.50g
Sucrose (Merck) 10.00g
Hydrochloric acid Proper amount of
Water for injection Constant volume to 100ml
(2) Preparation process
Taking the prescription amount of hydroxypropyl-beta-cyclodextrin and levosimendan sodium salt, adding 90ml of injection water into a eggplant-shaped bottle, stirring in a water bath at the temperature of 10+/-2 ℃ for 20min, obtaining clear liquid after complete dissolution, slowly dripping 0.1M hydrochloric acid solution to adjust the pH value to 9.1, fixing the volume of the injection water to 100ml, subpackaging into the penicillin bottle, filling 5 ml/bottle, half-pressing, freezing and drying, and sealing by a nitrogen filling gland to obtain the water content of less than 1.5%.
Preparation of amorphous Levosimendan sodium salt pharmaceutical composition
(1) Prescription of prescription
Prescription composition Dosage of
EXAMPLE 4 preparation of Levosimendan sodium salt 0.27g
Sodium sulfobutyl ether-beta-cyclodextrin (Zibo Qian Hui) 5.00g
Water for injection Constant volume to 100ml
(2) Preparation process
Adding sulfobutyl-beta-cyclodextrin sodium and levosimendan sodium salt with the prescription amount into a eggplant-shaped bottle, adding 90ml of water for injection, stirring in water bath at the temperature of 10+/-2 ℃ for 30min, obtaining clear liquid after complete dissolution, fixing the volume of the water for injection to 100ml, subpackaging into penicillin bottles with the volume of 5 ml/bottle, half-pressing plugs, freeze-drying, filling nitrogen and sealing a gland, and controlling the water content to be below 2.0%.
Preparation of amorphous Levosimendan sodium salt pharmaceutical composition
(1) Prescription of prescription
Prescription composition Dosage of
EXAMPLE 4 preparation of Levosimendan sodium salt 0.27g
Mannitol (Merck) 5.00g
Water for injection Constant volume to 100ml
(2) Preparation process
Taking mannitol and levosimendan sodium salt with a prescription amount, adding 90ml of injection water into a eggplant-shaped bottle, stirring in a water bath at the temperature of 10+/-2 ℃ for 30min, obtaining yellow clear liquid after complete dissolution, fixing the volume of the injection water to 100ml, subpackaging into penicillin bottles, 5 ml/bottle, half-pressing, freeze-drying, filling nitrogen and sealing with a gland, and controlling the water content below 1.5%.
The dried powder of the above application example was subjected to appearance, reconstitution time, appearance after reconstitution, levosimendan content, OR-1420 impurity detection, and the results are shown in table 1 below.
Table 1 application examples 1-5 test results
Table 1 shows that the sodium salt of levosimendan prepared in this example greatly increases the solubility of levosimendan, and the content of levosimendan is measured to be 98% -102%; the levosimendan sodium salt composition powder injection prepared according to the invention has the moisture below 1.5%, the stability is improved, the content of hydrolysis impurity OR-1420 is below 0.10%, and the stability is good. Compared with the levocetirizine Meng Danna crystal form B prepared by the prior art, the method has obvious progress.
It will be apparent to those skilled in the art that the present invention has been described in detail by way of illustration only, and it is not intended to be limited by the above-described embodiments, as long as various insubstantial modifications of the method concepts and aspects of the invention are employed or the inventive concepts and aspects of the invention are directly applied to other applications without modification, all within the scope of the invention.

Claims (10)

1. An amorphous levosimendan sodium salt characterized by the structural formula:
2. the amorphous levosimendan sodium salt of claim 1, wherein: the X-ray powder diffraction pattern of amorphous levosimendan sodium salt has a broad and weak diffraction peak at 20 deg. 2 theta, without characteristic diffraction peak.
3. The amorphous levosimendan sodium salt of claim 1, wherein: the amorphous levosimendan sodium salt has 2 endothermic peaks at 51.5℃and 138.7℃in a differential scanning calorimetry pattern.
4. A process for the preparation of amorphous levosimendan sodium salt as claimed in claim 1, characterized by the specific steps of: adding levosimendan and sodium carbonate into a reaction solvent, stirring for reaction at 5-40 ℃, filtering by using a 0.22 mu m polyethersulfone filter membrane after the reaction is finished, and freeze-drying to obtain the levosimendan;
wherein the molar ratio of the levosimendan to the sodium carbonate is 1:1.0-1:1.5.
5. The process for preparing amorphous levosimendan sodium salt as claimed in claim 4, wherein the dissolution temperature is 5-15 ℃ with stirring.
6. The process for the preparation of amorphous levosimendan sodium salt as claimed in claim 4, wherein the concentration of levosimendan is from 2mg/ml to 5mg/ml; the molar ratio of levosimendan to sodium carbonate is 1:1-1:1.2, and the reaction solvent is water.
7. A pharmaceutical composition comprising the amorphous levosimendan sodium salt compound of claim 1, consisting of levosimendan sodium salt and other pharmaceutically acceptable ingredients, characterized in that: the medicinal composition is lyophilized powder.
8. The pharmaceutical composition of the amorphous levosimendan sodium salt compound of claim 7, characterized in that: one or more of povidone, cyclodextrin, sodium cyclodextrin, mannitol, sucrose, glucose, glycine and lactose are selected as excipients; one or more of citric acid, sodium citrate, acetic acid, sodium acetate, phosphoric acid, dipotassium hydrogen phosphate, sodium hydroxide and hydrochloric acid are used as pH regulator.
9. The pharmaceutical composition of the amorphous levosimendan sodium salt compound of claim 8, characterized in that: the povidone is povidone K12, levosimendan sodium salt: the weight ratio of povidone K12 is 1:1-1:40; the cyclodextrin is hydroxypropyl-beta-cyclodextrin or sulfobutyl ether-beta-cyclodextrin sodium, levosimendan sodium salt: the weight ratio of the hydroxypropyl-beta-cyclodextrin or sulfobutyl ether-beta-cyclodextrin sodium is 1:1-1:90, and the pH regulator regulates the pH to 7.0-10.0.
10. A process for the preparation of a pharmaceutical composition comprising the amorphous levosimendan sodium salt compound of claim 1, characterized in that: the method comprises the following steps:
step (1): weighing levosimendan sodium salt and excipient, dissolving in water, adding a pH regulator to adjust the pH to 7.0-10.0 after the dissolution is completed, adding water to fix the volume to the total volume, and filtering by a 0.22 mu m PES filter membrane;
step (2): and (3) subpackaging the solution obtained in the step (1) into penicillin bottles, freeze-drying, filling nitrogen, rolling and sealing.
CN202311620270.8A 2023-11-29 2023-11-29 Amorphous levosimendan sodium salt and preparation method and application thereof Pending CN117624057A (en)

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