47 results about "Ibandronate Sodium" patented technology

The invention provides a medical compound for treating osteoporosis which is characterized in that the invention contains strontium ranelate and bisphosphonate. Animal experiments indicate that the invention achieves the unexpected effect for treating the osteoporosis. The osteoporosis is a bone disease of the whole body characterized by the low bone mass and the degeneration of the micro structure of the bone organization, companying with the enhancement of the bone fragility and easy happened bone broken for which no ideal treatment medicine exists in the clinic. The bisphosphonate of the invention comprises alendronate, risedronate sodium, ibandronate, pamidronate, Etidronate, disodium clodronate and zoledronic acid, etc. In the invention, the dosage of the bisphosphonate is greatly reduced, which can effectively reduce the happening of side effects and is convenient to use the medicine.

A system for the administration of a bisphosphonate to a subject comprises a bisphosphonate formulation and a microinjection device. In an embodiment, the bisphosphonate formulation includes ibandronate sodium. In some cases, the bisphosphonate formulation includes an excipient. The bisphosphonate formulation may be delivered to the subject subcutaneously, transdermally or intradermally.

The invention relates to a synthetic method of sodium ibandronate, which comprises the following steps: adding 3-(N-methyl-N-n-amyl amine)propanoic acid hydrochloride, orthophosphorous acid and phosphorus trichloride into a solvent, reacting to obtain ibandronic acid, and forming the salt of the ibandronic acid and sodium hydroxide to obtain the sodium ibandronate, and is characterized in that the added solvent is acetonitrile, the acetonitrile is used as the solvent, and a reaction product can be uniformly dispersed in the solvent, thereby the defect that other solvents enable the product to be in the shape of oil blocks to enable stirring to be more difficult is overcome, so that the process can be successfully used for large-scale production; the mol ratio of the 3-(N-methyl-N-n-amyl amine)propanoic acid hydrochloride to the phosphorus trichloride is 1:1.20 to 1.39, and the usage amount of the phosphorus trichloride is reduced, so that the refinement times can be reduced, thereby the refinement loss is reduced.

The invention discloses a method to synthesize ibandronate, aiming to simplify process and improve yield. The method includes the following steps: 1, producing crude 3-(N-methyl-N-n-amyl-amine)propionitrile liquid; 2, producing 3-(N-methyl-N-n-amyl-amine)propionic acid hydrochloride; 3, producing white crude ibandronate. Compared with the prior art, the method has less procedure and simple after-process and effectively improves total yield. Therefore, the method has high yield and low cost, and the operation is simple, safe and convenient for industrial production.

The invention relates to an ibandronate sodium containing injection. The injection is prepared by ibandronate sodium and pharmaceutically acceptable auxiliary materials; a pH value of the injection is controlled to be 3.5-4.5 by a phosphate buffer; activated carbon accounting for 0.1% of the total volume of the injection is used for removing a pyrogen; and adsorption of activated carbon to a main medicine is avoided while the pyrogen is removed. An accelerated stability test indicates that the impurity content of the injection is lower than that of the marketed injection, and the quality is stable and controllable.

The invention provides a method for detecting related substances in sodium ibandronate injection, and belongs to the technical field of drug analysis. According to the method for detecting the relatedsubstances in the sodium ibandronate injection, a high performance liquid chromatograph-charged aerosol detector (CAD) is adopted, a chromatographic column with octadecyl silane chemically bonded silica embedded in a strong anion exchange group as a filler is adopted, acetonitrile-water-trifluoroacetic acid serves as a flowing phase for gradient elution, the injection is subjected to Ag/H type pretreatment small column treatment, and thus the related substances in the sodium ibandronate injection can be effectively separated and determined.

The invention discloses a high performance liquid chromatography (HPLC), in particular to a method for analyzing sodium ibandronate and pereparation by utilizing the HPLC. Octyl or octadecyl silicane bonded silica gel is adopted as a chromatographic column of filler, methyl alcohol-phosphate buffered saline or acetonitrile-phosphate buffered saline is used as a mobile phase for chromatographic column separation, and an ultraviolet detector is used for detecting the sodium ibandronate and the impurities of the sodium ibandronat. With the method, effective separation of the sodium ibandronat, the impurities I and the impurities II can be conducted well, the contents of the sodium ibandronat can be measured accurately, and quality of sodium ibandronat products can be guaranteed well. The method has the advantages of being strong in specificity, simple in operation and high in accuracy.

The invention provides a method for preparing sodium ibandronate. The method comprises the following steps of: performing amyl reaction on 3-methylamino propionitrile and n-bromopentane in an N,N-dimethylformamide solution of anhydrous potassium carbonate to obtain 3-(N-methyl-N-amyl) aminopropionitrile; performing hydrolysis reaction on the 3-(N-methyl-N-amyl) aminopropionitrile and a phase transfer catalyst under an alkaline condition to obtain 3-(N-methyl-N-amyl) aminopropionic acid; and performing diphosphonic acidification and hydrolysis reaction on the 3-(N-methyl-N-amyl) aminopropionic acid, phosphorous acid and thionyl chloride in the presence of toluene to obtain ibandronic acid; and performing neutralization reaction on the ibandronic acid under an alkaline condition to obtain the sodium ibandronate. By adopting the method, the technical problems of low yield, low purity, more steps and high production cost of the sodium ibandronate in the prior art are solved.

The present invention relates to solid amorphous and crystalline forms of ibandronate sodium.

The invention provides a sodium ibandronate injection composition. A sodium ibandronate injection comprises sodium ibandronate serving as an active ingredient, glucose serving as a stabilizer and water for injection. The sodium ibandronate injection has the characteristics of simple prescription, high stability, high safety, suitability for industrial production and the like.

The invention relates to the technical field of pharmacochemistry and discloses sodium-ibandronate-loaded PLGA microspheres and a method for preparing complex-tissue engineering bone employing microspheres. The preparation method applying a re-emulsification solvent evaporation method comprises the following steps: dissolving sodium-ibandronate-loaded PLGA into a dichloromethane solution, carrying out mixing through vortex stirring to form a uniform solution, transferring the mixed solution into a beaker containing a PVA aqueous solution, carrying out stirring so as to evaporate the solvent and stabilize a microsphere form, and washing microsphere forms thrice with distilled water, so as to separate and obtain the sodium-ibandronate-loaded PLGA microspheres. According to the microspheres and the preparation method, the sodium ibandronate/PLGA/CPC-loaded complex-tissue engineering bone has good biocompatibility and osteogenesis activity, the adhesion, proliferation and osteogenesis differentiation of mesenchymal stem cells of bone marrow can be promoted, the formation of local new bone of necrotic femoral head is facilitated, the repairing and healing of the necrotic femoral head are accelerated, and thus, the complex-tissue engineering bone can be applied to treatment on ischemic necrosis of the femoral head.

The invention provides a sodium ibandronate injection composition. Every 1000 injections consist of the following components: 1.0684-6.4101g of sodium ibandronate, 1.66-9.96g of sodium acetate, suitable amount of glacial acetic acid, and 1000-6000ml of water for injection. The sodium ibandronate injection prepared by the invention has the advantages that the prescription is simple, auxiliary materials are all commonly used by the injection, and the safety is high. Simultaneously the sodium acetate content is low, irritation cannot be produced in intravenous administration, the prepared final product is stable in quality, and the indexes of related substances and contents are all superior to those in the prior art.

The invention discloses a preparation method of sodium ibandronate monohydrate. The method is characterized by comprising the following steps: adding 3-(N-methyl-n-pentylamine) propionic acid hydrochloride, phosphorous acid and phosphorus trichloride to solvent methylbenzene to react, so as to obtain an ibandronic acid ester; hydrolyzing to obtain ibandronic acid and salifying with sodium hydroxide; and after refining, adding water to concentrate, so as to obtain sodium ibandronate monohydrate. According to the process, genotoxic substances which can be generated can be well avoided, and the yield is high. By adoption of a water concentration method, the problems of patent protection and solvation can be well avoided, so as to obtain stable monohydrate.

The present invention relates to an improved process for the synthesis of Ibandronate sodium of formula (I). The present invention also provides novel processes for the synthesis of 3-[N-(methylpentyl)amino]propionic acid (III).

The invention relates to a drug synthesis method, and in particular relates to a preparation method of sodium ibandronate. The preparation method comprises the following steps of: directly reacting 3-(N-methyl-N-n-amylamine) propionic hydrochloride, phosphorous acid with phosphorus trichloride to obtain 1-hydroxyl-3-(methyl amylamine)-dimethylmethane-1,1-bipyrophosphoric acid hydrochloride, directly forming salt with sodium hydroxide after hydrolyzing so as to obtain crude sodium ibandronate, and respectively re-crystallizing for one time through mixed solvents of ethanol and water and acetone and water so as to obtain sodium ibandronate. Any solvent is not used in the step of synthesizing pyrophosphoric acid hydrochloride; solid-liquid reaction is carried out without stirring and post-treatment; products are directly used in the next step; a reaction system is dispersed by using organic solvents, such as chlorobenzene and diethyl carbonate, in some reported methods; products are shaped as oil blocks and are not beneficial to stirring and post-treating after reacting; in contrast, the kinds of impurities in the products are reduced; toxicity due to the organic solvents, such as chlorobenzene and diethyl carbonate, is eliminated; furthermore, the stirring difficulty is avoided; sodium ibandronate is prevented from being stuck on a stirrer and a bottle wall; and thus, industrial production is conveniently carried out.

The invention discloses a preparation method of ibandronate sodium, which is characterized in that: adding 3-(N-methyl-N-pentylamino) propionic acid hydrochloride, phosphorous acid, inertia solvent and phosphorus trichloride; carrying out a condensation reaction at 40-80 DEG C for 2-6 hours; adding purified water for 2-6 hours of hydrolysis for generating ibandronate sodium; carrying out a salt forming reaction with sodium hydroxide, and obtaining the ibandronate sodium crude product; recrystallizing the crude product with a mixed solvent containing acetone and water, and obtaining the ibandronate sodium. According to the invention, the added solvent is propylene carbonate, by using the solvent, the reaction resultants can be uniformly dispersed in the solvent, and thereby overcoming the disadvantages that products with viscosity are generated in the reaction by using other solvents, and the products are not easy to be stirred and the reaction is not easy to controlled; and the propylene carbonate has little toxicity; the invention has the advantages of simple operation, high safety, good product quality, low cost, etc. The preparation method is convenient for large scale production.

A novel form of Ibandronate sodium which is particularly suitable for pharmaceutical applications, and a process for preparing said novel form.

The invention provides a preparation process for Ibandronate monosodium crystals and hydration crystals thereof. The Ibandronate monosodium compound in Formula (1) is dissolved in 2 to 30 times of water; at least one of azanyl amides, alkyl sulfoxides, glycol ethers and alicyclic ethers is added into the compound solution, is stirred under condition of room-temperature to precipitate crystals, then is cooled down to minus 5 to 15 DEG C and filtered, and is dried in vacuum between 30 and 75 DEG C. The process is simple and easy to operate; Ibandronate monosodium hydration crystals have good crystal stability and are suitable for industrial production and storage.

The invention belongs to the field of medicine chemistry synthesis, and relates to a method for preparing a sodium Ibandronate monohydrate. The method comprises that: 1) 3-(N-methylpentylamino)propanoic acid hydrochloride, phosphorous acid and phosphorus trichloride are adopted as starting raw materials and are subjected to a reaction in a 1,3-dimethyl-2-imidazolidinone (DMI) solvent or a DMI-containing mixing solvent to obtain the sodium Ibandronate monohydrate crude product meeting the internal control standard in the one-step manner; and 2) the sodium Ibandronate monohydrate crude product is subjected to recrystallizatio in a methanol/water mixing solvent to obtain the sodium Ibandronate monohydrate meeting the clinical medicinal standard. According to the present invention, defects of low yield, high reagent toxicity, heavy pollution and the like in the prior art are overcome, and the preparation method for the sodium Ibandronate monohydrate represented by the formula (I) is provided, wherein the preparation method has characteristics of high yield, low environmental pollution, and easy purification.