摘要:
A novel reduced dose pharmaceutical composition comprising combination of fexofenadine or salts thereof; and pseudoephedrine or salts thereof in therapeutically effective amount, for the treatment of allergic rhinitis and associated symptoms in pediatric population.
摘要:
Novel compounds belonging to the class of oxazolidinones possessing potent antimycobacterial properties especially useful in the treatment of acid fast organisms such as Mycobacterium tuberculosis, Mycobacterium avium-intracellular complex, M. fortuitum and M. kansai. The compound and its pharmaceutically acceptable salts act as antibacterial agents. Also mentioned is a method for inhibiting growth of mycobacterial cells as well as a method of treating mycobacterial conditions such as Mycobacterium tuberculosis, drug resistant Mycobacterium tuberculosis, Mycobacterium avium-intracellular complex, M. fortuitum and M. kansai., including administering an antimycobacterially effective amount of the compound and/or pharmaceutically acceptable salts. There is also mentioned a process for the manufacture of the compound or its pharmaceutically acceptable salts.
摘要:
Novel pyrrole derivatives of formula (I) and their pharmaceutically acceptable acid addition salts having superior antimycobacterial activity against clinically sensitive as well as resistant strains of Mycobacterium tuberculosis as well as having lesser toxicity compared to known compounds. The use of the novel compounds of formula (I) for treatment of latent tuberculosis including Multi Drug Resistant Tuberculosis (MDR TB). The methods for preparation of the novel compounds, pharmaceutical compositions containing the novel compounds and method of treating MDR TB by administration of compounds of formula (I).
摘要:
A pharmaceutical composition for oral use comprising a) a core comprising an effective amount of benzimidazole and an organic stabilizing agent which is present in an amount effective to stabilize the composition, b) an intermediate layer comprising of a water insoluble polymer and an organic stabilizer, and c) an outer enteric coating layer. The organic stabilizing agent is present in the core from about 1% to about 10% by weight of the core and in the intermediate layer from about 5% to about 35% by weight of intermediate layer.
摘要:
A novel crystalline form of quinapril hydrochloride of formula (I) An amorphous form of quinapril hydrochloride substantially free of impurities, specially diketopiperazine compound, and conforming to pharmacopoeial specifications formed from the said novel crystalline form of quinapril hydrochloride of formula (I). The crystalline quinapril hydrochloride is in the form nitroalkane solvate in which the nitroalkane is nitromethane, nitroethane and nitropropanae. Each such nitroalkane solvate having particular characteristic X-ray diffraction patterns. A process for preparation of amorphous form of quinapril hydrochloride, substantially free of impurities, specially diketopiperazine compound, and conforming to pharmacopoeial specifications, using the novel crystalline quinapril hydrochloride as an intermediate. The process involves obtaining free base compound of formula (V) by adjusting the pH of a solution of the benzyl ester maleate salt of quinapril of formula (V) between 7.5-8.5 in a mixture of water and an organic solvent; catalytic hydrogenation of this compound (V) in an alcoholic solvent in the presence of concentrated hydrochloric acid or hydrogen chloride dissolved in an alcoholic solvent and in the presence of catalytic amounts of Pd/C to obtain a residue containing formula (I); crystallization of the said residue by evaporating the alcoholic solvent from a nitroalkane solvent to give crystalline quinapril hydrochloride, associated with a solvate of the nitroalkane solvent, and drying the crystalline quinapril hydrochloride nitroalkane solvate at a temperature between 40° C. and 45° C. under vacuum to give amorphous quinapril hydrochloride of formula (I).
摘要:
A novel 4-halo-2-oxyimino-3-oxo butyric acid-N,N-dimethyl formiminium chloride chlorosulfate of formula (I) useful in the preparation of cephalosporin antibiotics wherein X is chlorine or bromine; R is hydrogen, C1-4 alkyl group, an easily removable hydroxyl protective group, —CH2COOR5, or —C(CH3)2COOR5, wherein R5 is hydrogen or an easily hydrolysable ester group. The compound of formula (I) is prepared by reacting 4-halo-2-oxyimino-3-oxobutyric acid of formula (IV1), wherein X, R and R5 are as defined above, with N,N-dimethylformiminium chloride chlorosulphate of formula (VII) in an organic solvent at a temperature ranging from −30° C. to −15° C. The cephalosporins that may be prepared from the intermediate include cefdinir, cefditoren pivoxil, cefepime, cefetamet pivoxil, cefixime, cefmenoxime, cefodizime, cefoselis, cefotaxime, cefpirome, cefpodoxime proxetil, cefquinome, ceftazidime, cefteram pivoxil, ceftiofur, ceftizoxime, ceftriaxone and cefuzonam.
摘要:
A process for preparation of ceftiofur of formula (I) of high purity and substantially free from impurities is disclosed. The process comprises reacting [2-(2-aminothiazol-4-yl)]-2-syn-methoxyimino acetic acid-2-benzothiazolyl thioester of formula (II), with 7-amino-3-(2-furanylcarbonylthiomethyl)-3-cephem-4-carboxylic acid of formula (III) in the presence of a mixture of an water-immescible inert organic solvent and water and in the presence of a organic base and isolating ceftiofur of formula (1) substantially free of impurities by, d) adding water to the reaction mixture and selectively partitioning the impurities in the organic phase and ceftiofur (I) in the form of a salt with the base in the aqueous phase, e) acidifying the aqueous phase containing ceftiofur (I) in the form of a salt with the base in the presence of a mixture containing a water-miscible and a water-immiscible organic solvent and in the presence of a saturated aqueous solution of an alkali or alkaline earth containing salt, to partition ceftiofur (I) in the organic phase, and f) isolating ceftiofur (I) of high purity and substantially free of impurities by evaporation of the organic solvent or precipitation by addition of a co-solvent.
摘要:
A color stable controlled release pharmaceutical dosage form comprising HMG CoA reductase inhibitor, rate controlling polymers and one or more pharmaceutical excipients wherein the granules are independent of particle size the pharmaceutical dosage form is free of alkalizing/buffering agents. A color stable controlled release pharmaceutical dosage form comprising Fluvastatin Sodium, hydroxypropyl methylcellulose polymer and hydroxypropyl cellulose, wherein the granules are independent of particle size.
摘要:
A process for preparation of cefuroxime axetil of formula (I) of at least 96% purity and substantially free of analogous Δ2-isomer of formula (II) and other impurities. The process comprises reacting cefuroxime acid of formula (III) with (R,S)-1-acetoxyethyl bromide of formula (IV), and a Group I or II metal carbonate in the presence of a compound of formula (V), MmHnPqOr (V) wherein M is Group I or II metal; m is 1, 2, 3; n is 0, 1, 2, or 4; q is 1 or 2; r is 4, 7 or 8; in the presence of a C1-4 alcohol and a polar tertiary amide solvent selected from N,N-dimethylacetamide, N,N-dimethylformamide, N,N-dimetheylpropionamide, N,N-diethylacetamide, N,N-diethylformamide and N,N-diethylpropionamide at a temperature ranging from about −30 to +30° C. and subjecting the product thus obtained to a desired step of purification.
摘要:
The present invention relates to a biodegradable microparticle composition useful for the target specific drug delivery to manage pulmonary tuberculosis, said composition comprising two anti-tuberculosis drugs, and a biodegradable polymer for drug delivery in a ratio of about 1:2 to 2:1, wherein the anti-tubercular drugs are in the ratio of 1:2 to 2:1, also, a process for the preparation of the composition, and lastly, a method of treating pulmonary tuberculosis in a subject, said method comprising administering by inhalation alone or in combination with oral route, pharmaceutically effective amount of the composition to the subject in need thereof, wherein the dosage for inhalation is ranging between 0.5 to 10 mg/kg body weight/day and that for oral route is ranging between 4 to 32 mg/kg body weight/day.