Abstract: The present invention relates to oxidative degradation products of atorvastatin calcium and the process of the preparation thereof. The present invention also relates to atorvastatin calcium substantially free of oxidative degradation products and the pharmaceutical compositions containing such atorvastatin calcium.
Type:
Application
Filed:
April 30, 2010
Publication date:
September 2, 2010
Applicant:
Lek Pharmaceuticals D.D.
Inventors:
Rok GRAHEK, Darko Kocjan, Andrej Bastarda, Andrej Kocijan, Matjaz Kracun
Abstract: The new pure vancomycin hydrochloride substantially free of impurities known in commercially available products is described. The term “substantially free of impurities” designates a purity of vancomycin hydrochloride between about 97% and about 99%, particularly between about 98% and about 99%, preferably about 99%, as determined by HPLC analytical method as directed in U.S.P., NF 27th revision, 22 (2004). The new pure vancomycin hydrochloride (vancomycin B hydrochloride) contains less than 0.7% of total impurities, namely, only one impurity exceeds 0.3%. The new process for the purification of crude vancomycin by displacement chromatography is described by which the desired pure antibiotic according to the present invention is produced, based on the finding that high purity of the vancomycin hydrochloride is obtained using low selected pH values of the mobile phase between 3.9 and 4.2.
Abstract: The present invention relates to the pharmaceutical dosage forms which enable a controlled and/or a targeted delivery of an active substance to the selected regions of gastrointestinal tract of humans or animals. The pharmaceutical dosage forms preferably comprises the active substance N-(2(2-phthalimidoethoxy)-acetyl)-L-alanyl-D-glutamic acid (designated as LK 423). Methods of treatment of chronic inflammatory diseases of gastrointestinal tract of humans and/or animals by using the pharmaceutical dosage forms of the invention are disclosed.
Type:
Application
Filed:
March 24, 2005
Publication date:
July 22, 2010
Applicant:
LEK PHARMACEUTICALS D.D.
Inventors:
Marija Bogataj, Ales Mrhar, Anton Lavric, Manica Cerne, Doris Tibaut, Anton Stalc, Uros Urleb, Tatjana Mateovic, Greta Cof, Janez Kerc, Rok Dreu, Fumio Yoneda, Shizuko Muraoka
Abstract: The present invention provides a method of making solid micropellets of which at least 75% by weight have a diameter less than 500 ?m comprising (i) melting one or more binders; and (ii) combining the one or more binders melted in step (i) with a pharmaceutically active ingredient to form solid micropellets. Solid micropellets obtainable by this method are also provided. The invention has particular utility for improving the solubility of poorly water-soluble pharmaceutically active ingredients.
Type:
Application
Filed:
March 18, 2008
Publication date:
July 8, 2010
Applicant:
LEK PHARMACEUTICALS D.D
Inventors:
Rok Dreu, Miha Homar, Mateja Burjak, Janez Kerc, Stanko Srcic
Abstract: The present invention relates to a cabergoline crystal form L, its preparation from halogenated aromatic solvents and aliphatic hydrocarbons and to pharmaceutical compositions containing the new form.
Abstract: The present invention discloses a process for preparing a magnesium salt of S-omeprazole. The S-omeprazole salt preferably has a water content below about 4.8% by weight, a magnesium content of about 3.4-4.0% by weight, calculated on the weight of anhydrous, solvent free S-omeprazole magnesium, and has an optical purity of at least about 85% entantiomeric excess (“e.e.”). In addition, the present invention provides a magnesium salt of S-omeprazole which is substantially free of neutral omeprazole, meaning that the product contains less than about 3% by weight of a sum of neutral S-omeprazole and neutral omeprazole. Moreover, the S-omeprazole magnesium according to the invention preferably has assay of related substances and degradation products of less than about 0.1% by weight as determined by high performance liquid chromatography (HPLC).
Abstract: The present invention relates to a process for removing an organic solvent from a salt of omeprazole, in particular a magnesium salt of omeprazole, a composition comprising a salt of omeprazole, in particular a magnesium salt of omeprazole obtainable by such a process, and pharmaceutical compositions comprising said composition or a salt of omeprazole, in particular a magnesium salt of omeprazole, in particular where omeprazole is S-omeprazole.
Abstract: The present invention relates to oxidative degradation products of atorvastatin calcium and the process of the preparation thereof. The present invention also relates to atorvastatin calcium substantially free of oxidative degradation products and the pharmaceutical compositions containing such atorvastatin calcium.
Type:
Application
Filed:
November 6, 2009
Publication date:
March 4, 2010
Applicant:
LEK PHARMACEUTICALS D.D.
Inventors:
Rok Grahek, Darko Kocjan, Andrej Bastarda, Andrej Kocijan, Matjaz Kracun
Abstract: The present invention relates to the process for the preparation of compounds of formula (I) having an ACE inhibitory action wherein carboxy group of stereospecific amino acid is activated with an uranium salt in the presence of an aprotic solvent and an activated amino acid is further transformed with appropriate amine into ACE inhibitor or its precursor.
Abstract: The present invention provides a stable pharmaceutical composition comprising an inclusion complex of perindopril, a microcrystalline cellulose having a low moisture content and/or a silicified microcrystalline cellulose having a low moisture content, and optionally other pharmaceutically acceptable excipients.
Abstract: In the present invention, a new pharmaceutical formulation of bursting pellets comprising in the core a high dose of a low potency active substance which is poorly soluble in water is described. Release of the active substance from the core takes place within minutes.
Type:
Application
Filed:
December 21, 2006
Publication date:
February 11, 2010
Applicant:
LEK Pharmaceuticals D.D.
Inventors:
Polonca Kuhar, Peter Svete, Judita Sirca
Abstract: The invention relates to the synthetic gene coding for hG-CSF which enables expression in E. coli with an improved expression level of the recombinant hG-CSF regarding the total cellular proteins after expression.
Abstract: The present invention relates to a new process for the preparation of pure perindopril erbumine. The present invention also relates to a new process for the preparation of crystalline form D of perindopril erbumine.
Abstract: There is provided a process for preparing purified esomeprazole magnesium, comprising the steps of: providing esomeprazole magnesium; contacting said esomeprazole magnesium with a non-solvent comprising an aqueous component up to a maximum content defined by water saturation in the non-solvent; and recovering purified esomeprazole magnesium formed from the contacting step. The process is particularly suitable to obtain esomeprazole magnesium dihydrate, especially form A. The esomeprazole magnesium obtained is remarkably pure, stable and is resistant to form interchangeability.
Abstract: 4-bromomethyl-2?-formylbiphenyl and 4-bromomethyl-2?-hydroxymethylbiphenyl are useful starting material for the preparation various angiotenzin II antagonists, which are prepared from 4-bromomethyl-2?-cyanobiphenyl or 4?-bromomethylbiphenylcarboxyilic derivatives using selected hydride reagent.
Type:
Application
Filed:
March 30, 2006
Publication date:
December 24, 2009
Applicant:
LEK PHARMACEUTICALS D.D.
Inventors:
Anton Copar, Ljubomic Antoncic, Matej Antoncic
Abstract: The present invention belongs to the field of pharmaceutical industry and relates to a new method for the treatment of psychostimulant addiction, in particular cocaine addiction, or pharmaceutically acceptable acid addition salts thereof, with a therapeutically effective amount of 9,10-didehydro-N-methyl-N-(2-propy-nyl)-6-methyl-8?-aminomethylergo-line in the form of free base or in the form of pharmaceutically acceptable addition salt, in particular the bimaleate salt, as well as pharmaceutical compositions containing said compound. In literature, the compound is also known under code LEK-8829. More particularly, present invention relates to a novel method of treatment for reduction of abstinence symptoms after cocaine withdrawal and for suppression the symptoms of craving for cocaine withdrawal and for suppression the symptoms of craving for cocaine reinforcement, and to the use of said active substance for the preparation of the pharmaceutical composition for the treatment of cocaine addiction.
Type:
Grant
Filed:
December 11, 2003
Date of Patent:
December 15, 2009
Assignee:
Lek Pharmaceuticals d.d.
Inventors:
Igor Krisch, Marko Zivin, Natasa Milivojevic, Rudolf Rucman, Breda Bole-Vunduk, Uros Urleb
Abstract: The present invention relates to multiple unit tablets comprising multiple units compacted together with at least two tablet filler-binders and optionally other pharmaceutically acceptable excipients, wherein at least one of said tablet filler-binder is a tablet filler-binder having mean particle size-to-mean multiple unit size ratio from 10% to 40%, and at least one of said tablet filler-binder is a tablet filler-binder having mean particle size-to-mean multiple unit size ratio from 1% to 10%. The present invention further relates to process for the preparation of multiple unit tablets.
Abstract: Lovastatin, pravastatin, simvastatin, mevastatin, atorvastatin, and derivatives and analogs thereof are known as HMG-CoA reductase inhibitors and are used as antihypercholesterolemic agents. The majority of them are produced by fermentation using microorganisms of different species identified as species belonging to Aspergillus, Monascus, Nocardia, Amycolatopsis, Mucor or Penicillium genus, and some are obtained by treating the fermentation products using the methods of chemical synthesis or they are the products of total chemical synthesis. The aforementioned active substances may be destabilized by the environmental factors, their degradation may also be accelerated by interactions with other pharmaceutical ingredients, such as fillers, binders, lubricants, glidants and disintegrating agents, therefore the pharmaceutical ingredients and the process for preparation of the pharmaceutical formulation should be meticulously chosen to avoid the aforementioned undesired interactions and reactions.
Abstract: A pharmaceutical composition comprising an ester of 4-(1-hydroxy-1-methylethyl)-2 propyl-1-[[2?-(1H-tetrazol-5-yl)[1,1?-biphenyl]-4-yl]methyl]-1H-imidazole-5-carboxylic acid characterized in that when exposed to 75% relative humidity at 40° in open dish for one month the total amount of related substances does not increase more than 1% is described.
Type:
Application
Filed:
May 2, 2007
Publication date:
September 24, 2009
Applicant:
LEK PHARMACEUTICALS D.D.
Inventors:
Matej Avanzo, Tanja Rozman Peterka, Igor Legen