Patent application number | Description | Published |
20080207926 | PROCESS FOR PREPARATION OF 13,14-DIHYDRO-PGF2 ALPHA DERIVATIVES - The invention relates to a process for the preparation of 13,14-dihydro-PGF | 08-28-2008 |
20080214876 | Process for Preparation of Pharmaceutically Pure Anhydrous Calcipotriol - A process for the preparation of a pharmaceutical-grade anhydrous calcipotriol comprising: (a) dissolving crude calcipotriol having a water content of X % by weight in a first solvent or in a mixture of two or more first solvents, said first solvent or said mixture of two or more first solvents forming an azeotropic system with water, to obtain a solution of crude calcipotriol; (b) obtaining an intermediate calcipotriol by (i) placing said solution of crude calcipotriol under a reduced pressure and evaporating, if X is greater than or equal to 1, or (ii) crystallizing, if X is lower than 1; and (c) re-dissolving said intermediate calcipotriol in a second solvent or a mixture of two or more second solvents, said second solvent being anhydrous, and crystallizing at least once to obtain pharmaceutical-grade anhydrous calcipotriol. | 09-04-2008 |
20080234493 | Process for the Preparation of 2-[N-[{S)-1-Ethoxycarbonyl-3-Phenylpropyl]-(S)-Alanyl]-(1S,3S,5S)-2-Azabicyclo[3.3.0]Oct- an-3-Carboxylic Acid - A process for preparation of 2-[N-[(S)-1-ethoxycarbonyl-3-phenylpropyl]-(S)-alanyl]-(1S,3S,5S)-2- azabicyclo [3.3.0] octane-3-carboxylic acid, ie. Ramipril, involves condensation of an activated derivative of 2-[N-](S)-1-ethoxycarbonyl-3-phenylpropyl]-(S)-alanine with racemic (1R*,3R*,5R*)-2-azabicyclo[3.3.0]octane-3-carboxylic acid, and then the desired diastereoisomer (1a) is separated from the obtained diastereoisomeric mixture of 2-[N-[(S)-1-ethoxycarbonyl-3-phenylpropyl](S)-alanyl]-(1S,3S,5S)-2-azabicyclo[3.3.0]octane-3-carboxylic acid (1a) and 2-[N-[(S)-1-ethoxycarbonyl-3-phenylpropyl -alanyl]-(1R,3R,5R)-2-azabicyclo[3.3.0]octane-3-carboxylic acid (1b) by treating it with a solvent that selectively dissolves the undesired diastereoisomer (1b) while the diastereoisomer (1a) remains undissolved. | 09-25-2008 |
20080255380 | Process and Intermediates for the Preparation of Sulfonyl Derivatives of Cholecalciferol - Preparation of sulfonyl derivatives of cholecalciferol of Formula 1, wherein R | 10-16-2008 |
20090005413 | Novel Salt of Montelukast - The invention relates to a novel salt of montelukast with tert-butylamine and its use in the process for the preparation of highly pure free montelukast acid and/or pharmaceutically acceptable salts thereof, in particular montelukast sodium. | 01-01-2009 |
20090093651 | PROCESS FOR PREPARATION OF 13,14-DIHYDRO-PGF2 ALPHA DERIVATIVES - The invention relates to a process for the preparation of 13,14-dihydro-PGF | 04-09-2009 |
20090105483 | PROCESS FOR THE PREPARATION OF PRAMIPEXOLE BASE AND/OR ITS SALTS - The process for the preparation of pramipexole base and/or its pharmaceutically acceptable salts, especially the hydrochloride salt, in the alkylation reaction of (S)-(−)2,6-diamino-4,5,6,7-tetrahydrobenzothiazole with an alkylating agent, wherein the reaction is carried out in the absence of a base, and in a solvent from which the resulting N-monoalkylated product selectively precipitates out as a salt. After isolation from the reaction mixture, the N-monoalkylated product is converted a) into the free pramipexole base upon treatment with an inorganic base and is then converted into another pharmaceutically acceptable pramipexole salt; or b) directly into another pharmaceutically acceptable pramipexole salt or the hydrate thereof. | 04-23-2009 |
20100222614 | PROCESS FOR THE PREPARATION OF CALCIPOTRIOL - A process for the preparation of calcipotriol at least including: (a) reacting a C-22 phenylsulfonyl derivative of cholecalciferol of Formula 2, wherein R | 09-02-2010 |
20140031357 | ASYMMETRICALLY SUBSTITUTED ANTHRAPYRIDAZONE DERIVATIVES AS CYTOSTATICS - The invention relates to the new, asymmetrically substituted derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione and their use as cytostatics exhibiting activity against tumor cells, especially against cells with multidrug resistance (MDR). In particular, the invention concerns derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione represented by the general formula (I). | 01-30-2014 |