84 results about "Aztreonam" patented technology

A pharmaceutically composition, comprising a combination of an antibiotically active compound of the formula (I): with a β-lactamase inhibitor of one of the formulae (II) to (XIII) are active against Gram-negative bacteria, in particular such bacteria which have become resistant against antibiotics such as aztreonam, carumonam and tigemonam. Optionally the compositions may comprise another β-lactamase inhibitor of one of the formulae (II) to (XIII), particularly of formula (V) or formula (VI).

The present invention provides a reagent composition for detecting β-lactamase including as a β-lactamase detection substrate 3-[2,4-dinitrostyryl]-7-(2-thienylacetamido]-3-cephem-4-carboxylic acid, or 7-[2-(2-aminothiazol-4-yl)-2-(1-carboxy-1-methylethoxy-imino)acetamido]-3-(2,4-dinitrostyryl)-3-cephem-4-carboxylic acid, and at least one β-lactamase inhibitor selected from the group consisting of clavulanic acid, aztreonam, ethylenediaminetetraacetic acid, and cloxacillin, which composition can detect β-lactamases rapidly and easily with high sensitivity. The present invention also provides a detection kit including the detecting reagent composition. Further, the present invention provides a β-lactamase detection method where a liquid specimen containing a target substance to be analyzed is brought into contact with the composition.

A method and a composition for treatment of pulmonary bacterial infections caused by gram-negative bacteria suitable for treatment of infection caused by Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, Pseudomonas aeruginosa, Haemophilus influenzae, Proteus mirabilis, Enterobacter species, Serratia marcescens as well as those caused by Burkholderia cepacia, Stenotrophomonas maltophilia, Alcaligenes xylosoxidans, and multidrug resistant Pseudomonas aeruginosa, using a concentrated formulation of aztreonam lysinate delivered as an aerosol or dry powder formulation.

The invention discloses a freeze-dried preparation of aztreonam liposomes, wherein aztreonam is encapsulated in antioxidant-containing liposomes made of neutral phospholipids, negative charge phospholipids and cholesterol. The freeze-dried preparation has stable quality. Additionally, the aztreonam is encapsulated to minimize toxicity and adverse effects without affecting drug effectiveness.

The invention describes compositions and kits comprising at least one nitric oxide enhancing group antimicrobial compound, or pharmaceutically acceptable salts thereof, and novel compositions comprising at least one nitric oxide enhancing antimicrobial compound, and, optionally, at least one nitric oxide enhancing compound and/or at least one therapeutic agent. The invention also provides methods for (a) treating bacterial infections; (b) treating viral infections; (c) treating fungal infections; and (d) treating lesions. The antimicrobial compounds of the invention are preferably tobramycin, aztreonam, ciprofloxacin and doripenam. The nitric oxide enhancing antimicrobial compounds are substituted with at least one heterocyclic nitric oxide donor group and/or at least one nitroxide group. The nitric oxide enhancing groups are nitroxides and/or heterocyclic nitric oxide donors. The heterocyclic nitric oxide donors are furoxans, sydnonimines, oxatriazole-5-ones and/or oxatriazole-5-imines. In one embodiment the methods of the invention are for the treatment of bacterial infections associated with pulmonary diseases such as cystic fibrosis and for treating Bacillus anthracis infections.

The invention discloses a new aztreonam for injection and a production method thereof. The aztreonam for injection consists of beta crystal form aztreonam and L-arginine, and the weight ratio of the beta crystal form aztreonam to the L-arginine is 1:0.74-1:0.86, wherein the components of aztreonam and L-arginine both need to be ground with the granularity respectively capable of passing a medicinal sieve ranging from 80 meshes to 120 meshes, preferentially a medicinal sieve of 100 meshes. The aztreonam for injection has the advantage of ensuring the crystal form of the aztreonam for injection same as that of raw materials, as well as the advantages of accurate rate of two ingredients and subpackage dosage, small subpackage difference among every bottle, uniform mixing, no delamination of two ingredients in production, transportation and storage, and the like. Simultaneously, the invention reduces the impurities of ring-opening aztreonam to some extent.

The invention provides a sub-micro emulsion frozen preparation of aztreonam and a preparation method thereof. The frozen preparation is prepared mainly with the following components according to parts by weight: 1-20 portions of aztreonam, 1-40 portions of biodegradable polymer, 1-20 portions of emulsifying agent, 10-50 portions of skeleton supporting agent and 0.5-20 portions of stabilizing agent.

The invention relates to a production method of anhydrous beta-type aztreonam, which comprises dissolving alpha-crystal-system aztreonam in the mixture of absolute ethyl alcohol and acetone at -10-+25DEG C, filtering without germ, heating the solution to 30-55DEG C, or seriously mixing to obtain anhydrous beta-type aztreonam crystals.

A process for manufacturing bulk solutions and lyophilized α-aztreonam lysinate for large scale production of an inhalable aztreonam. A purified α-aztreonam lysinate for inhalation. Dry powder or lyophilized α-aztreonam lysinate composition for dry powder or aerosol inhalation.

The invention provides a synthesis method for aztreonam. The synthesis method for the aztreonam particularly comprises the following steps: preparing 2-[[(Z)-1-(2-amino-4-thiazolyl)-2-chlorine-2-oxo ethylidene]amino]oxygen-2-methyl propionic acid hydrochloride (IV) by using (2-amino thiazolyl-4-yl)-2-(tert-butyl oxycarbonyl)-isopropoxy iminodiacetic acid (III) as a starting material under the action of a BTC/TPPO system and HCl gas; and performing condensation on aztreonam parent nucleus (II) to directly obtain the aztreonam. Compared with the traditional process, the new process has the characteristics as follows: (1) an acyl chloride method is adopted, so damage to beta-lactam ring by strong acid in the traditional process is avoided from the source; (2) residue of 2-mercaptobenzothiazole (M) of the product is eliminated from the source; (3) the used reaction reagent triphenylphosphine oxide (TPPO) can be recycled and is environment-friendly; and (4) in the aztreonam product, the yield is high and the purity is over 99 percent, so important industrialized application prospect is achieved.

The invention relates to a method for synthesizing an aztreonam compound. The method comprises the following steps of: (1) adding water and a water-soluble non-aqueous solvent into a reaction container, adding trans-3(S)-amino-4-methyl-2-keto-1-azetidine sulfonic acid, triethylamine and (Z)-2-[(2-aminothiazole-4-radical)-(benzothiazole-2-sulfenyl carbonyl) methylamine oxygroup]-2-methylpropanoic acid tert-butyl ester for reacting, and adjusting the pH with acid and separating crystals out to obtain tertiary butyl aztreonam; and (2) subjecting the tertiary butyl aztreonam and acid-water mixed liquor to reaction and performing post-treatment to obtain aztreonam. By adopting the method, the reaction time can be shortened, the reaction speed can be increased, the production cost can be lowered, and environmental pollution can be reduced.

The invention provides an environmentally-friendly synthesis process of Aztreonam main ring (3S-trans)-3-amino-4-methyl-2-oxo-1-azetidinyl sulfonic acid. The synthesis process comprises: carrying out methyl esterification on L-threonine, carrying out ammonolysis on L-threonine methyl ester bisulfate, carrying out N-BOC (N-tert-butoxycarbonyl) protection on amino group of L-threoninamide, carrying out mesylation on N-BOC-L-threoninamide, carrying out sulfonylation on N-BOC-O-mesyl-L-threoninamide, carrying out cyclization reaction on sodium N-BOC-O-mesyl-L-threoninamide sulfonate, and de-protecting and acidifying sodium (3S-trans)-3-tert-butoxyformamido-4-methyl-2-oxo-1-azetidinyl sulfonate to obtain (3S-trans)-3-amino-4-methyl-2-oxo-1-azetidinyl sulfonic acid. The synthesis process has the advantages that simple post-treatment, high yield, high utilization rate of wastes, low cost and low pollution; moreover raw materials can be obtained easily.

The invention provides an aztreonam/arginine medicinal composition lipid microsphere injection. The aztreonam/arginine medicinal composition lipid microsphere injection is mainly prepared from the following components in part by weight: 1 part of aztreonam, 0.7 to 8 parts of arginine, 1 to 8 parts of poly-anhydride, 0.1 to 2 parts of propylene glycol, 0.2 to 5 parts of fatty acid sorbitan 80 and 0.9 to 6 parts of sodium chloride.

The present invention relates to the preparation process of Aztreonam as one kind of antibacterial medicine. The preparation process includes the reaction of Aztreonam with protected side chain and formic acid or its water solution to obtain Aztreonam.

The invention provides a method for preparing anhydrous beta-aztreonam. Based on preparation methods of amine-HCl-ethanol in the prior art, the method provided by the invention comprises steps of replacing inorganic acid with organic acid, carrying out neutralization, cooling and crystallizing, thus avoiding the corrosion of inorganic acid to equipment in clean areas and latent quality risk, guaranteeing the quality stability of the product and making the production to keep running normally.

The invention relates to a formula and a preparation process of aztreonam for injection. The preparation process comprises the following steps of: preparing; removing pyrogen; degerming, namely, filtering a prepared liquid medicament with a 0.22 mu m grade filter membrane within 8 hours for degerming; filling, namely, filling the degermed liquid medicament into a small bottle within 8 hours; performing freeze drying, namely, transferring the small bottle filled with the liquid medicament onto a shelf board of a freeze dryer, pre-freezing at the temperature of 40 DEG C below zero for 2 to 3 hours, setting the temperature of the shelf board to be between 0 and 8 DEG C at a primary drying stage, setting the vacuum degree to be between 5 and 15 Pa and drying for about 19 hours until the temperature of the product is close to the set temperature; and setting the temperature of the shelf board to be between 30 and 40 DEG C at a secondary drying stage, setting the vacuum degree to be between5 and 15 Pa, drying for 3 to 5 hours until the temperature of the product is more than 25 DEG C, restoring the pressure of a freeze drying box to atmospheric pressure, compressing a bottle plug and removing the small bottle from the freeze drier. The preparation process has the advantages of short period, low energy consumption and the like.

The present invention relates to an aztreonam compound preparation method, which comprises the following operation steps: (1) dissolving and mixing a compound represented by a formula (I) and a compound represented by a formula (II) with an organic solvent, adding an alkali at a room temperature, carrying out a complete stirring reaction, cooling to a temperature of -20-10 DEG C, adding trifluoroacetic acid in a dropwise manner, stirring, filtering, and drying the filter cake to obtain a compound represented by a formula (III); and dissolving the compound represented by the formula (III) in formic acid, adding anisole, cooling to a temperature of -20-10 DEG C, adding hydrochloric acid in a dropwise manner, stirring, adding ethyl acetate, stirring, filtering, washing the filter cake with ethyl acetate, and drying to obtain the aztreonam compound represented by a formula (IV). Compared with the aztreonam compound preparation method in the prior art, the aztreonam compound preparation method of the present invention has characteristics of stable raw material source, low price, low cost, short reaction period, simple operation, high yield, less three-waste, environmental pollution reduction and high product purity, and is suitable for industrial production. The formula I, II, III and IV are as the follows.

The invention relates to the β polymorph of Aztreonam, which contains less than 2.5% by weight residual solvent and to a process of making said polymorph.

The invention discloses a method for preparing an aztreonam (AZT) powder aerosol. The method comprises the following steps: accurately weighing a certain quantity of AZT or AZT and auxiliary materials; dissolving the weighed AZT or AZT and auxiliary materials in an appropriate solvent to obtain a basic solution; spray-drying the basic solution to manufacture corresponding dry powder particles, wherein the auxiliary material is amino acid and/or an absorption enhancing agent. According to the method, the particle diameters of the prepared AZT dry powder particles are within the inhalable range, so that favorable dispersity and efficient lung delivery efficiency are achieved.

The invention discloses bovine-derived bacillus cereus M001. The bovine-derived bacillus cereus M001 is collected in the China General Microbiological Culture Collection Center. The strain is separated from blood of cattle suffering from the sudden death disease; and the bacterial colony is a wax drop-like bacterial colony with red center, grey white periphery and irregular periphery. The strain can be seen by microscopic examination, two ends of the strain are flush, the size of the strain is about 1.0x6.0 [mu]m, and the strain is mostly arranged in a long chain mode and is Gram-positive bacteria. After special staining, the strain is placed under a microscope for observation, and parasporal crystals are not observed; a 16SrDNA sequence is as shown in a sequence table; the strain is sensitive to clindamycin and gentamicin drugs, is moderately sensitive to erythromycin, minocycline and other drugs, and is resistant to ceftazidime, aztreonam and other drugs; and the strain has pathogenicity and lethality for the cattle. The strain can be used as a bovine epidemic disease quarantine control sample or a bovine epidemic disease prevention vaccine.

A method and a composition for treatment of pulmonary bacterial infections caused by gram-negative bacteria suitable for treatment of infection caused by Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, Pseudomonas aeruginosa, Haemophilus influenzae, Proteus mirabilis, Enterobacter species, Serratia marcescens as well as those caused by Burkholderia cepacia, Stenotrophomonas maltophilia, Alcaligenes xylosoxidans, and multidrug resistant Pseudomonas aeruginosa, using a concentrated formulation of aztreonam, or a pharmaceutically acceptable salt thereof, delivered as an aerosol or dry powder formulation.