32 results about "Vancomycin Hydrochloride" patented technology

The invention relates to an industrial feasibly method for preparing a high-purity vancomycin hydrochloride. The method comprises the following steps of putting a crude vancomycin with the content of vancomycin not less than 80 percent in a dextran resin glass chromatography column containing the NH4HCO3 mobile phase for column chromatography to obtain an effective chromatography liquid; adding NaCl water solution into the effective chromatography liquid and stirring to produce a deposit; top cleaning by 90 percent ethanol water solution for a few times and drying to obtain the vancomycin hydrochloride. Effective components of the vancomycin hydrochloride obtained through the method are improved greatly, other impurities are reduced greatly, and the purity is very high; meanwhile, the overall color of the product is improved remarkably, and the product is suitable for oral or injection administration.

A method is provided for preparing spray dried powder containing vancomycin hydrochloride. The method comprises providing a vancomycin hydrochloride solution with a chromatographic purity of at least 95%, adding an excipient to the vancomycin hydrochloride solution to form a mixture solution of the vancomycin hydrochloride solution and the excipient, concentrating the mixed solution of the vancomycin hydrochloride solution and the excipient to form a 20% to 30% vancomycin concentrate, filtering the vancomycin concentrate to form a final filtrate, and spray drying the final filtrate to form a spray dried vancomycin hydrochloride powder with EP impurity B level of not more than 1.5%.

Provided is a method of purifying a vancomycin from a fermentation broth of a microorganism containing vancomycin, including passing the fermentation broth of a microorganism containing vancomycin through a strong acid cation exchange resin, a weak base anion exchange resin, alumina and a hydrophobic absorbent resin sequentially.

The invention discloses a preparation method of vancomycin hydrochloride, which comprises the following steps: adding a vancomycin crude extracting solution into any other acid except hydrochloric acid for salification, adding a water-soluble organic solvent to crystallize, dissolving the crystal in water, and exchanging with an anion exchange resin to obtain the hydrochloride. The method can effectively crystallize the vancomycin out of the crude extracting solution, thereby enhancing the vancomycin purity, reducing the equipment corrosion by hydrochloric acid, saving the equipment investment and prolonging the service life of the equipment.

The invention discloses a refining method for vancomycin hydrochloride. In the method, a vancomycin hydrochloride solution of which the purity is over 90 percent is refined into vancomycin hydrochloride of which the purity is over 95 percent; and in a refining process, solid-liquid separation is realized without using any organic solvent, and the yield is over 80 percent. Vancomycin in a mother solution obtained through solid-liquid separation can be returned to a previous separating process for recycling. The refining method is easy and convenient for operating, has high yield, and is a feasible industrial refining process.

The invention discloses a drug-carried nanoparticle. The active ingredient of the drug-carried nanoparticle is vancomycin hydrochloride; a carrier material is formed by compounding carboxylation chitosan and chitosan quaternary ammonium salt according to a mass ratio of 10:(1 to 5) through ion crosslinking. The drug-carried nanoparticle has the advantages that the drug carrying rate on the vancomycin is obviously increased, the biodegradability is realized, and the drug-carried nanoparticle can be used for treating osteomyelitis. The invention also provides a preparation method and application of the drug-carried nanoparticle, and also provides a preparation method and application of aerogel based on the drug-carried nanoparticle. By utilizing the temperature-sensitive characteristic of the aerogel, the drug is administrated to the disease focal part, and is slowly released at the disease focal part, so as to improve the disease focal part.

The invention discloses a method for preparing a high-purity sample of vancomycin hydrochloride impurities 3 and 8. The method comprises the following steps: taking vancomycin hydrochloride crystalline powder, preparing the vancomycin hydrochloride crystalline powder into a solution with concentration being 40-50g/L by use of a sodium chloride aqueous solution; preserving heat for 72-73 hours at a water bath ranging from 70 DEG C to 75 DEG C; cooling the solution to 4-6 DEG C, and carrying out nanofiltration desalination; carrying out resin chromatography enrichment on nanofiltration liquor, and separately collecting desorbed solutions of an impurity 3 and an impurity 8, purity of which is greater than 80%; sequentially carrying out ultrafiltration and nanofiltration on the desorbed solutions; and desalinizing the nanofiltration liquor with a high-pressure liquid-phase chromatography preparation column to obtain high-purity samples of the impurity 3 and the impurity 8, and the purity of the samples is greater than 97%. The method disclosed by the invention is simple in process, so that preparation cost is greatly reduced.

The present invention provides a process for preparing vancomycin hydrochloride using a mutant strain of Amycolatopsis orientalis (accession No. KCCM-10836P) comprising the steps of i) mutating and isolating a strain of Amycolatopsis orientalis (accession No. KCCM-10836P) for producing vancomycin from mother strain of Amycolatopsis orientalis (accession No. ATCC-19795) using NTG(N-methyl-N′-nitro-N-nitrosoguanidine) in the selection medium; ii) seed culturing the isolated mutant strain of Amycolatopsis orientalis (accession No. KCCM-10836P); iii) cultivating and fermenting said mutant strain of Amycolatopsis orientalis in the fermentation medium consisting of 12˜18 (w/v) % of dextrin, 2.2˜3.8 (w/v) % of bean powder, 1.9˜2.9 (w/v) % of potato protein, 0.10˜0.14 (w/v) % of sodium chloride and a small amount of minerals; iv) filtering vancomycin using microfilter in the cultivation broth by removing mycelia; v) purifying obtained vancomycin using column system compacted with cation exchange resin, anion exchange resin and absorbent resin; and vi) crystallizing the purified vancomycin with hydrochloric acid.

The invention discloses a method for preparation of high purity samples of an impurity 1, an impurity 2 and an impurity 10 in vancomycin hydrochloride. The method includes: taking vancomycin hydrochloride crystalline powder and preparing it into an aqueous solution with a concentration of 40-50g/L; conducting water bath heat preservation at 25-30DEG C, adding hydrogen peroxide, and performing stirring for 40-42h; then adding an oxalic acid aqueous solution slowly, stirring the substances evenly till no generation of bubbles, then stopping adding, and carrying out ultrafiltration and nanofiltration in order; slowly adding ethanol into nanofiltrate to conduct crystallization, and performing pumping filtration to obtain a crystallization mother solution; and employing a high pressure liquid chromatography preparation column to isolate the crystallization mother solution, thus obtaining high purity samples of the impurity 1, impurity 2 and impurity 10 in vancomycin hydrochloride. The method has simple process, and greatly lowers the preparation cost.

The invention provides a high-density amorphous vancomycin hydrochloride, a preparation method thereof, an application of the vancomycin hydrochloride for oral administration or injection administration and a pharmaceutical composition containing the vancomycin hydrochloride. The vancomycin hydrochloride in an amorphous state has the characteristics similar to the diffraction pattern of an X-ray powdery crystal shown in the attached drawing 1. The effective components of vancomycin hydrochloride prepared by the preparation method are enhanced greatly, other impurities are reduced to a large extent, the purity is high, and the chromatographic purity can reach more than 95 percent. The amorphous vancomycin hydrochloride not only can be used as injections, but also can be used as capsules and other solid preparations. Meantime, the appearance and the color of products are improved obviously, and the products are suitable for oral administration or injection administration.

Disclosed herein are methods, compositions, and kits for treating a skin condition caused by a bacterial infection at a skin depth with a topical ointment comprising vancomycin hydrochloride. Also disclosed herein are methods, compositions, and kits for testing susceptibility of vancomycin for treating a bacterial infection at a skin depth, and of optimizing a topical ointment therapeutic regimen.

A kind of Gram-negative bacteria universal detection culture medium of the present invention is composed of: peptone 5.0g~7.0g, yeast extract 2.5g~3.0g, glucose 1.0g, sodium chloride 0g~5.0g, agar 15.0g, Distilled water 1000mL, vancomycin hydrochloride 0.5mg/L~1.0mg/L. The culture medium of the present invention has high selectivity, and can specifically and selectively cultivate Gram-negative bacteria; the preparation is simple, and vancomycin is used alone as a selection agent, and the simplest formula even only needs to add 0.5 mg/L to the plate counting agar ~1.0mg/L of vancomycin hydrochloride is enough; it is friendly to human and environment, the concentration of vancomycin used is not more than 1.0mg/L; the work efficiency is improved, and it can directly count the colonies of Gram-negative bacteria.

Provided is a separation and purification method for vancomycin hydrochloride of high purity. The method comprises the following steps: (1) obtaining a vancomycin hydrochloride solution from a crude vancomycin product by ion exchange chromatography and obtaining a concentrate by nanofiltration desalination and concentration; (2) adjusting the concentrate with a hydrochloric acid solution and then performing a column chromatography using a reverse chromatography column for the adjusted concentrate; (3) collecting the chromatographic solution of vancomycin to obtain a mixed chromatographic solution; (4) adjusting the mixed chromatographic solution, and separating the solution and the salts by nanofiltration desalination and concentration to obtain a concentrate; and (5) obtaining a vancomycin dry powder with a chromatographic purity of up to 99% and a pure white appearance by dehydrating and drying the concentrate of step (4), or by solvent crystallization or salting-out crystallization.

The invention provides a composite material bionic bone. The composite material bionic bone comprises the following components: nano-hydroxyapatite, I-type collagen, vancomycin hydrochloride and sodium hydroxide. The invention aims to provide the composite material bionic bone, which can solve the problem that the existing substitute bone is difficult to meet higher use requirements.

The present invention provides a deshydroxy vancomycin compound,a method of its preparation and a pharmaceutical composition comprising a pharmaceutically effective amount of the deshydroxy vancomycin and the use of the said composition in the preparation of drugs for the treatment of susceptible bacteria infections. The method includes the following steps: (1) preparing a concentrated vancomycin solution containing the deshydroxy vancomycin by fermentations of Amycolatopsis Orientalis with Deposit No. CGMCCNO.1183; (2) separating and purifing the concentrated vancomycin solution to obtain a refined filtrate of vancomycin hydrochloride containing the deshydroxy vancomycin by column chromatography; and (3) further separating and purifing the refined filtrate to obtain the deshydroxy vancomycin by chromatography. Wherein, separation and purification is processed by column chromatography in a gel chromatography column containing a salt-water mobile phase, separation and purification is processed by chromatography in a macroporous adsorption resin chromatography column containing a buffer-methanol mobile phase.

The invention discloses a vancomycin hydrochloride medicine composition and a method for preparing the same. The vancomycin hydrochloride medicine composition comprises 10-60% of vancomycin hydrochloride, 30-90% of matrixes and 0-10% of lubricants, and preferably comprises 30-40% of vancomycin hydrochloride, 50-70% of matrixes and 2-8% of lubricants. The matrixes are one or two types of PEG (polyethylene glycol) 1000-6000, stearic acid and poloxamer 188, and the lubricants are one or two types of micro-powder silica gel, talc powder, sodium stearyl fumarate, sodium dodecyl sulfate and magnesium stearate. The vancomycin hydrochloride medicine composition can be in one of dosage forms of soft capsules, hard capsules and tablets. The vancomycin hydrochloride medicine composition and the method have the advantages that components in the vancomycin hydrochloride medicine composition are easily matched with one another, and medicines are high in stability; hot melting technologies are adopted in the method for preparing the vancomycin hydrochloride medicine composition, processes for producing the vancomycin hydrochloride medicine composition are simple, can be implemented conveniently and quickly, are stable and can be scaled up advantageously, and service dosage forms of the vancomycin hydrochloride can be broadened.