34 results about "CEFPIROME SULFATE" patented technology

The present invention relates to synthesis process of cefpirome sulfate as one kind of antibiotic. The present invention synthesizes cefpirome sulfate by using 7-amino-3-[(2, 3-cyclopentenyl pyridyl)-1-methyl] cefo phytanic hydrochloride and 2-methoxyimino-2-(2-amino-4-thiazolyl) -(z)-thioacetic benzothiazole ester as the initial material, and through acylation reaction and salt forming reaction. Compared with available technology, the present invention has the advantages of short synthesis path, simple technological condition, low cost, high product yield, high product quality, and being suitable for industrial production.

The present invention relates to a method for refining cefpirome sulfate. Sodium hydroxide and cefpirome sulfate are reacted to generate sodium sulfate and free cefpirome, and then organic solvent is added so that the generated sodium sulfate and the hydrate are precipitated. Cefpirome sulfate can be gained when the sulfuric acid salt formation is re-added to the decolored filtrate.

The invention relates to preparation methods of cefpirome intermediate and cefpirome; 7-amino cephalsporanic acid is used as a raw material; a silanization reaction, an iodination reaction, and a pyridine reaction are performed; the obtained product is added with an oxidant, and hydrochloric acid or is added into a mixed solvent of an organic solvent and water to prepare a halogen acid salt of the cefpirome intermediate (6R, 7R)-7-amino-3-[(2,3-cyclopentene-pyridine)methyl]ceph-3-ene-4-carboxylic acid. The invention also provides a method for preparing cefpirome sulfates by using the obtainedintermediate halogen acid salt. The cefpirome intermediate and cefpirome prepared by the methods have high yield, and low production cost; the operation is simple; the discharge of three wastes is less; treatment and recovery are easy, and the methods are applicable to industrial production.

The invention relates to a synthesis method for making cefpirome sulfate. The method comprises the following steps that: cefotaxime and 2, 3-cyclopenopyridine, with the molar ratio of between 1:7 and 1:12, are mixed with trimethyl bromosilicane used as protecting agent inside organic solvent to carry out substitution reaction, thereby generating cefpirome dihydrobromide; and the salt-forming reaction of the cefpirome dihydrobromide is carried out to make cefpirome sulfate. According to the synthesis method of cefpirome sulfate provided by the technical proposal of the invention, cefotaxime and trimethyl bromosilicane are respectively used as raw material and protecting agent to make cefpirome sulfate. Because enough supply and technical maturity of cefotaxime are realized in China and trimethyl bromosilicane is more active than trimethylchlorosilane and is cheaper than trimethyliodosiliane, the synthesis method has the advantages of low cost of raw material, high yield, simple synthetic route and convenient operation.

The invention discloses a reworking method of cefpirome sulfate mixed powder. The reworking method comprises the following steps of: 1) dissolving the cefpirome sulfate mixed powder to be reworked in a certain amount of water, and setting the temperature at 0 DEG C-30 DEG C; 2) enabling the solution after dissolution to pass through a column loaded with an adsorbent, and collecting filtrate; 3) adding activated carbon into the filtrate, performing decolorization reaction, and controlling the reaction time at 30min; 4) filtering and collecting the filtrate; 5) dripping a sulfuric acid solution into the filtrate, and regulating the pH value to 1.2-2.4; 6) adding a crystallizing agent into the filtrate for crystallization, controlling the crystallization temperature at 0 DEG C-30 DEG C, and stirring for 2-4h; 7) filtering to obtain a crystal after filtration, and washing with one solution or a mixed solution of acetone and alcohol; and 8) controlling the temperature at 45 DEG C-55 DEG C, and drying to obtain the cefpirome sulfate. According to the reworking method disclosed by the invention, the unqualified cefpirome sulfate can be effectively reworked and refined to produce a qualified product, and the cost can be further reduced.

The invention provides a method for detecting a related substance II of cefpirome in cefpirome sulfate/sodium chloride injection. According to the method, experiments on chromatographic conditions and system suitability are performed by using high-performance liquid chromatography. For the color spectrum which is suitable for separating globular protein of which the molecular weight is 1,000-5,000, hydrophilic silica gel serves as a filler, and phosphate buffer solution-acetonitrile of which the volume ratio is 85:15 serves as a mobile phase, wherein the flow velocity is 0.5 ml/min, the phosphate buffer solution consists of 0.05 mol/L disodium hydrogen phosphate and 0.05 mol/L sodium dihydrogen phosphate which are mixed in the volume ratio of 50:50, and the measurement wavelength is 254 nm. The method comprises the following steps of: placing appropriate amount of cefpirome sulfate/sodium carbonate mixed powder which comprises 10 mg of cefpirome into a 10 ml measuring flask, wherein the mixed powder is taken out of an infusion bag; adding water to dissolve the mixed powder and diluting to certain scale, and shaking up; and injecting 20 mu l of the diluted solution into a liquid chromatograph to perform chromatography, and recording a chromatogram. The detection method is advanced, reliable, high in accuracy and high in specificity, the experimental apparatus is high in precision, high in reproducibility and high in stability, the related substance II of the cefpirome can be effectively detected, and the method can be used for quality control.

The invention discloses a reworking method of cefpirome sulfate. The reworking method comprises the following steps of: 1) dissolving the cefpirome sulfate to be reworked in a certain amount of water; 2) dripping an organic base for dissolution, regulating the PH value to 4.0-8.0, and setting the reaction temperature at 0 DEG C-30 DEG C; 3) enabling the solution after dissolution to pass through a column loaded with an adsorbent, and collecting filtrate; 4) adding activated carbon into the filtrate, performing decolorization reaction for 30min, and filtering; 5) regulating the PH value of the filtrate after decolorization to 1.2-2.4; 6) adding a quantitative crystallizing agent into the filtrate for crystallization, controlling the crystallization temperature at 0 DEG C-30 DEG C, and stirring for 2-4h till the end of reaction; 7) filtering, and washing with one solution or a mixed solution of acetone and alcohol; and 8) drying at the temperature of 45 DEG C-55 DEG C to obtain the cefpirome sulfate. According to the reworking method disclosed by the invention, the unqualified cefpirome sulfate can be effectively reworked and refined to produce a qualified product, and the cost can be further reduced.

The invention provides a production method of cefpirome sulfate/ sodium chloride injection non-PVC (polyvinyl chloride) instant matched injection, which comprises the following steps of: preparing liquid medicine, bagmaking and filling, sterilizing and drying, sterile split charging, and the like; and is characterized in that the bagmaking and filling comprises the following steps of: utilizing a film for multilayer coextrusion infusion to make a bag body with a solid chamber and a liquid chamber through middle pseudo soldering and periphery soldering, wherein the pseudo soldering part divides the bag body into the solid chamber and the liquid chamber; after further processing and testing the bag body, filling sodium chloride injection into the liquid chamber; and then sealing a combined cover and a port by fusing. The production method of the cefpirome sulfate/ sodium chloride injection non-PVC (polyvinyl chloride) instant matched injection has the following advantages that: the separating safety of the solid chamber and the liquid chamber is good; the operation in opening is convenient; each processing step has no adverse impact on drugs and the bag body; and the impact on the drugs and the bag body, and various test items for the produced product conform to the standard.

The invention relates to a method for synthesizing cefpirome sulfate. The method comprises the following steps: firstly, preparing 2,3-cyclopentenopyridine and trimethylsilyl iodide into quaternary ammonium salt intermediate compound; Secondly, performing carboxyl and amido protection for 7-ACA through hexamethyl disilylamine, and finally adding quaternary ammonium salt intermediate compound into the well protected 7-ACA solution for rapid reaction to obtain cefpirome mother nuclide 7-ACP; Thirdly, performing N- acidylation reaction to 7-ACP and AE active ester in the mixed phase of DMF and water, and obtaining cefpirome sulfate after salt forming reaction. By using step one to obtain quaternary ammonium salt intermediate compound, not only N,N- diethylaniline is saved, but also the side chain 2,3-cyclopentenopyridine is easy to rectify and recycle, thereby greatly reducing the production cost; simultaneously, the disadvantages of strong alkalinity and a large amount of side reaction of 2,3-cyclopentenopyridine are overcome. By using the method, the yield rate and the purity of the product can be improved.

The invention discloses a refining process of 7-ACP.HCL, comprising the following steps of: 1, adding a hydrochloric solution to an aqueous 7-ACP.HCL crude product solution, stirring, dissolving, and regulating a pH value between 0.5 and 2.0; 2, adding a right amount of hydrogen peroxide, stirring, then adding activated carbon, stirring for 15-30 minutes, filtering, washing the carbon by using deionized water, and merging washing liquor; 3, adding methylene dichloride, stirring for 15-30 minutes, standing and demixing, and separating an aqueous phase; and 4, adding a right amount of acetone to the aqueous phase, dripping an alkali solution, regulating the pH value between 2.5 and 4.0, stirring, crystallizing, and growing crystals for 1-2 hours after the crystallization. The invention has high yield and purity of the 7-ACP.HCL, is beneficial to synthesizing high-purity cefpirome sulfate, enhances the purity of the 7-ACP.HCL by removing iodide impurities contained in the 7-ACP.HCL by adding the hydrogen peroxide before the recrystallization process of the 7-ACP.HCL, has simple operation process and reaction condition, and is suitable for industrialized production.

The invention provides a fasuadil hydrochloride injection and a preparation method thereof. The fasuadil hydrochloride injection is prepared from fasuadil hydrochloride with the concentration of 15mg/mL, citric acid with the concentration of 1 to 10mg/mL, and disodium hydrogen phosphate; the disodium hydrogen phosphate is adopted to adjust a solution pH value to be 4.0 to 6.5. Preferably, the concentration of the citric acid is 3 to 7mg/mL, and the pH value is 5.5 to 6.5. More preferably, the concentration of the citric acid is 5mg/mL, and the pH value is 5.7 to 6.3. By adopting the fasuadil hydrochloride injection prepared by the method, visible foreign matters meet quality standard provisions in a freezing and thawing test, and the compatible stability with cefpirome sulfate is improved.

Belonging to the technical field of cefpirome drug synthesis, the invention in particular relates to a synthesis method of cefpirome sulfate. The method includes: taking GCLE and AE active ester as the raw materials for reaction under the action of alkali and a catalyst, performing extraction, using dilute hydrochloric acid to adjust pH and performing crystallization to obtain a compound A; addingan activating agent into an organic solvent, performing stirring till dissolving clarification, adding the compound A, adding 2, 3-cyclopentenopyridine dropwise to precipitate solid, thus obtaining acompound B; adding the compound B into a mixed solvent of water and alcohol, conducting heating stirring till dissolution, using sulfuric acid to adjust the pH value and performing crystallization toobtain cefpirome sulfate. The method provided by the invention adopts GCLE as the raw materials, avoids the use of expensive catalyst, and the used solvent and activating agent are cheap and easily available, thus greatly reducing the production cost. The synthesis method provided by the invention has the advantages of simple synthetic process route, few reaction steps, convenient operation and few side reaction, and the prepared cefpirome sulfate has high purity and yield.

The invention provides a cefpirome sulfate pharmaceutical composition powder injection, relating to the field of a pharmaceutical preparation and a preparation method thereof. The invention solves the problems of high dosage of single cefpirome sulfate and metronidazole preparation, poor treatment effect after combination, and great side effect at present. The main materials of the pharmaceutical composition are cefpirome sulfate and metronidazole lipid microspheres, the auxiliary material is sodium carbonate, the weight ratio of the cefpirome sulfate (on the basis of cefpirome) to the metronidazole lipid microspheres (on the basis of metronidazole) is 100:6-100:20, and the weight ratio of the cefpirome sulfate (on the basis of cefpirome) to the sodium carbonate is 1000:242; and after the pharmaceutical composition is prepared into the powder injection, the pH value of the water solution of the pharmaceutical composition is 5.5-7.0. The pharmaceutical composition powder injection provided by the invention has high curative effect, and can reduce the consumption of the metronidazole by more than 80%, thereby greatly relieving or avoiding the toxic and side effects of the metronidazole, especially digestive tract reactions, including nausea, vomit, inappetence, abdominal colic and neurotoxicity, and lowering the incidence rate of adverse reactions.

The invention provides a cefpirome sulfate composition freeze-dried powder injection for injection, and relates to the technical field of medicines and medicine preparation. The cefpirome sulfate composition freeze-dried powder injection for injection comprises the following raw material components in parts by weight: 7.26-9.17 parts of cefpirome sulfate, 4.36-5.50 parts of chitosan nanoparticles and 84.38-89.10 parts of water for injection. The cefpirome sulfate composition freeze-dried powder injection for injection has the advantages that 1) the chitosan nanoparticles occupy the active center of beta-lactamase, so that the beta-lactamase in drug-resistance bacteria is deactivated, the antibacterial spectrum of cefpirome is widened and the antibacterial activity of cefpirome is remarkably enhanced; 2) the chitosan nano carrier material has biocompatibility, biodegradability and non-toxicity; 3) the composition can maintain body circulation for a longer time; 4) the chitosan nanoparticles can replace mannitol as a freeze-dried skeleton agent of the freeze-dried powder injection, so that the activity of mannitol on a human body is eliminated.