50 results about "Betamethasone dipropionate" patented technology

The invention provides a compound betamethasone suspension injection, which is a compound preparation composed of low-solubility betamethasone dipropionate and high-solubility betamethasone sodium phosphate. Long-lasting, it can be used for the treatment of musculoskeletal and cartilage tissue diseases, allergic diseases, skin diseases, collagen diseases, tumors and other clinical diseases.

The invention relates to a preparation method of betamethasone dipropionate micro-particle, which is characterized in that betamethasone dipropionate is dissolved in a solvent, and then the mixture is added into an anti-solvent at the mixing state to be continuously mixed and crystallized. Through the micro crystallization method, the betamethasone dipropionate micro-particle which has small grain size and homogeneity satisfying the preparation requirement is prepared. The micro-particle can be further prepared into semi-solid preparations such as cream and suspension preparations such as injection, spray, aerosol and the like.

The invention belongs to the field of medicine preparations, and particularly relates to a preparation technology of calcipotriol. According to the preparation technology, the problem of the stability of calcipotriol and betamethasone dipropionate is solved. Benzyl alcohol and triethanolamine are added to auxiliary materials. The paste prepared by the technology is stable in property. Compared with foreign similar products, the cost is lower; and the method is suitable for industrialized production.

A composite medicine in the form of ointment and gels for treating psoriasis contains Tazhuluoding, betamethasone dipropionate and pharmacologically receptable auxiliary. Its advantages are high curative effect and high safety.

A composition that includes a corticosteroid (e.g., betamethasone dipropionate), a vitamin D analog (e.g., calcipotriene) and an acyl ester of 1,2,3-trihydroxypropane or an ether thereof; and a method of treating a dermatologic condition (e.g., psoriasis vulgaris) in a mammal (e.g., human); are provided. The method includes topically administering to a mammal in need of such treatment an effective amount of the composition, to the affected topical area, for a period of time effective to treat the dermatologic condition.

A storage stable ointment of the present invention comprises a vitamin D compound, a corticosteroid, and an N,N-di(C₁-C₈)alkylamino substituted, (C₄-C₁₈)alkyl(C₂-C₁₈)carboxylic ester a (C₁-C₄)-alkyl(C₈-C₂₂)carboxylic ester in a petrolatum ointment base, and optionally containing mineral oil and/or tocopherol. Preferably, the vitamin D compound is calcipotriene, the corticosteroid is selected from the group consisting of clobetasol propionate and betamethasone dipropionate, and the N,N-di(C₁-C₈)alkylamino substituted, (C₄-C₁₈)alkyl(C₂-C₁₈) carboxylic ester comprises dodecyl 2-(N,N-dimethylamino)-propionate (DDAIP).

The invention relates to sustained release microspheres of polyethylene glycol-polylactic acid entrapped betamethasone dipropionate and a preparation method thereof. The sustained release microspheres are prepared from degradable high-molecular biomaterial polyethylene glycol-polylactic acid entrapped betamethasone dipropionate by an O/W type emulsification-solvent evaporation process, and are used for treating inflammatory diseases. The sustained release microspheres of polyethylene glycol-polylactic acid entrapped betamethasone dipropionate, provided by the invention, can regulate the release of a drug, prolong the action time of the drug, reduce the administration times, reduce the side effects of the drug and improve the drug effect. The preparation method provided by the invention is simple and reliable, can guarantee the product quality and application effect, and facilitates industrial production.

The invention relates to a synthetic method of beclomethasone dipropionate. According to the method, beclomethasone 11, 17, 21-tripropionate is taken as the raw material and reacts in an organic solvent with a gluconic acid solution or an aqueous solution of ester capable of being converted into gluconic acid in water to prepare beclomethasone dipropionate.

The invention belongs to the field of medicine preparations and particularly relates to a preparation process of alclometasone dipropionate. According to the preparation process, in order to solve a stability problem of alclometasone dipropionate, cetostearyl alcohol is adopted as a dispersing agent of alclometasone dipropionate serving as an active ingredient, and main medicine particles are evenly dispersed and not dissolved in a system to prepare a suspended type emulsifiable paste. The granularity D90 of the emulsifiable paste prepared by means of a formula and a method is smaller than orequal to 30 microns, and the emulsifiable paste is uniform, fine and smooth and easy to apply. Alclometasone dipropionate in a fine particular state in the prepared emulsifiable paste exists in the system; compared with a solution-type emulsifiable paste, the emulsifiable paste has the advantages that the chemical stability of main medicine is remarkably improved on the one hand, and on the otherhand, prolonging of medical effects is facilitated since medicine particles are stored and continuously released so that irritation caused to the skin since the concentration of partial medicine is excessively high due to fast release of medicine can be reduced at the same time. The process procedures are obtained by means of optimization, the operation is simple and feasible, and the process hasreproducibility and is applicable to industrial production.

The invention discloses a purifying method of betamethasone phosphate. The method comprises the following steps: (A) adding pure water into a purifying tank, adding a crude product of betamethasone phosphate, adding a sodium hydroxide solution, and adjusting the pH value to 8.0-10.0, and waiting until the betamethasone phosphate is totally dissolved; (B) adding aluminum sulfate, stirring and measuring the pH value; if the pH value is 8.0-8.5, adjusting the pH value to 7.5-7.0 with hydrochloric acid, stirring and measuring the pH value again; if the pH value does not change, heating to 50-70 DEG C; and cooling and standing for at least 8 hours; and (C) natural filtering: after the filtrate in a filter funnel is totally filtered, checking the clarity of the filtrate, adjusting the temperature in the tank to 10-20 DEG C, adding hydrochloric acid, adjusting the pH value to 0.5-1.0, standing for at least 8 hours, and filtering to obtain pure betamethasone phosphate. The turbidity of the betamethasone phosphate purified by the method is obviously improved.

The invention discloses beclomethasone dipropionate emulsifiable paste. The beclomethasone dipropionate emulsifiable paste comprises beclomethasone dipropionate adopted as the active component, an oil-phase component, a humectant, an emulsifier, an aseptic and water, and is characterized by also comprising edetate calcium disodium.

The invention provides a method for preparing alclometasone dipropionate by using an etherified intermediate. According to the method, the etherified intermediate 3-vinyl alcohol ether-16a-methyl-17a,21-bipropionyloxy-pregna-3,5-diene-7,11,20-triketone serves as the raw material and is reduced with 7-site and 11-site diketone and subjected to three reactions including acid hydrolysis deprotection,1-site DDQ dehydrogenation and 7-site chlorine substitution, and then alclometasone dipropionate is synthesized. According to the method, the etherified intermediate 3-vinyl alcohol ether-16a-methyl-17a,21-bipropionyloxy-pregna-3,5-diene-7,11,20-triketone serves as the raw material, alclometasone dipropionate is synthesized through three steps of reactions, compared with a traditional method using de-fluorated dexamethasone acetate as the raw material, the technology has the advantages that a synthetic route is short, the process is economical and environmentally friendly, the production operation is simple and convenient and the product yield is high; solvents used during production can be recycled, and industrial production is easy to implement.

The invention provides a method for preparing a reduced intermediate product for aclomethasone dipropionate. The method comprises the steps that with 16a-methyl pihydrocortisone as a raw material, a crude reduced intermediate product for aclomethasone dipropionate is synthesized through a five-step reaction of 21-site propionic acid esterification, 7,11-site double-oxidation into diketone, 17-sitepropionic acid esterification, 3-site enolization etherification protection and 7,11-site diketone reduction and acid hydrolysis deprotection, then the reduced intermediate product for aclomethasonedipropionate is obtained through refining. By means of the method, with 16a-methyl pihydrocortisone as the raw material, the reduced intermediate product for aclomethasone dipropionate is synthesizedthrough the five-step reaction; the process has the advantages of being short in synthesis route, economical, environmentally friendly, simple in production operation, high in product yield and the like; a solvent used in production can be recycled and applied, and industrial production is easy to implement.

The invention relates to an inhalant aerosol suspension, which is an inhalable aerosol suspension medicine composition that is prepared from beclomethasone dipropionate and amino acids, especially leucine or phenylalanine. The aerosol suspension maintains suspension stability better and is also improved in homogeneity and convenience in usage.

The invention discloses a betamethasone dipropionate nano freeze-dried powder injection and a preparation method thereof. The freeze-dried powder injection comprises the following components in percentage by weight: 6%-12% of betamethasone dipropionate, 20%-54% of a supporting agent, 11%-37% of a suspending aid and 21%-50% of a freeze-drying protective agent. The preparation method comprises the following steps: taking a good solvent containing betamethasone dipropionate and a supporting agent as a good solvent phase, taking an aqueous solution containing a suspending aid and a freeze-drying protective agent as an anti-solvent phase, respectively pumping out the good solvent phase and the anti-solvent phase through a peristaltic pump, colliding with fluid in the micro-channel, collecting in a container, stirring, and performing microfiltration, filling, pre-freezing and freeze-drying to obtain the product. The product prepared by the invention is small in active drug particle size and loose in texture, and can be quickly dissolved after being added with water to recover the original characteristics of the liquid medicine; the product improves the curative effect of the medicine, expands the range of dosage forms, is convenient to store and transport, and fully meets the requirements of storage and treatment.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of betamethasone dipropionate. According to the method, betamethason-17-propionate is taken as a raw material, propionic anhydride is taken as a raw material, under the condition that 4-dimethylaminopyridine is taken as a catalyst, betamethasone dipropionate is generated through reaction, and high-purity betamethasone dipropionate is obtained through refining by adopting absolute ethyl alcohol, dichloromethane and normal hexane. The preparation process is simple, the reaction temperature is moderate, and ultralow-temperature or high-temperature reaction is avoided; the solvent or reagent used in the preparation is cheap and easy to obtain, convenient to charge and easy to transport and store; the method has the advantages of small dosage of reaction catalyst, high yield, less generated waste liquid, environmental friendliness and suitability for commercial production.

The present invention relates to a pharmaceutical foam composition comprising a corticosteroid and a Vitamin D analogue for topical administration to a patient in need thereof, such as for the treatment of plaque psoriasis. The present invention also relates to a process for preparing the composition and a suitable container system for administration of the composition. Preferably, the invention relates to the topical administration of betamethasone dipropionate and calcipotriene with one or more pharmaceutically acceptable excipients and propellants where the composition is stable in the container system coated with a coating material selected from the group comprising of epoxyphenol resin, modified polyesters, microflex coating or polyacrylates.

The invention relates to the field of medical products, in particular to a method for preparing a betamethasone dipropionate atomization inhalant. The method comprises the following steps: dispersing betamethasone dipropionate into water to obtain suspension, homogenizing, sterilizing, and thus obtaining the betamethasone dipropionate atomization inhalant, wherein the homogenizing pressure is 200 to 2,000 bar. The preparation method is green and environment-friendly, simplifies the operation steps, can realize continuous operation, and is short in acting time, sterile, pollution-free and suitable for industrialized production. The prepared betamethasone dipropionate atomization inhalant has the advantages of high dispersion stability, high lung deposition rate, low medicament consumption, high bioavailability and low toxic or side effect.

The invention discloses an injection for treating lumbar disc herniation. The injection consists of the following raw materials: 8-10 ml of salviae miltiorrhizae injection, 0.5-1 ml of compound betamethasone injection, 1-2 ml of mecobalamine injection, 6-9.5 ml of 0.9% sodium chloride solution and 1 ml of iohexol injection. The compound betamethasone injection is sterilizing injection suspension which is formed by mixing betamethasone dipropionate and betamethasone sodium phosphate. The drug raw materials do not have incompatibility, the salviae miltiorrhizae injection has effects of promoting collateral circulation, improving blood supply and promoting tissue regeneration by removing blood stasis, and can promote annulus fibrosus repairing and regenerating, corticosteroids has effects of diminishing inflammation, resisting rheumatism and resisting allergy; chemical substances which are overflowed out of an intervertebral disc from a nucleus pulposus are inhibited; the mecobalamine injection supplements vitamin B12, nourishes and repairs nerves, and relieves peripheral nerve disorders; the 0.9% sodium chloride solution is used for improving an inflammatory environment; and the iohexol injection is a non-ionic contrast agent, and is used for spinal contrast to observe distribution conditions of medicines.