| Natco Pharma Limited Patent applications |
| Patent application number | Title | Published |
|---|
| 20120077833 | ACID ADDITION SALTS OF (3,5-BIS TRIFLUOROMETHYL)-N-[4-METHYL-3-(4-PYRIDIN-3YL-PYRIMIDIN-2YLAMINO)-PHENYL]- -BENZAMIDE - The present invention relates to acid addition salts of the pharmaceutically active compound (3,5-Bistrifluoromethyl)-N-[4-methyl-3-(4-pyridin-3yl-pyrimidin-2ylamino)-phenyl]-benzamide(I): | 03-29-2012 |
| 20120058200 | PROCESS FOR THE PREPARATION OF LANTHANUM CARBONATE DIHYDRATE - Present invention relates to a process for the preparation and pharmaceutical usage of dihydrate form of lanthanum carbonate. Present process produces lanthanum carbonate dihydrate (La2(CO3)3.2H2O) free of lanthanum hydroxycarbonate and is stable at ambient condition. Lanthanum carbonate dihydrate exhibit improved performance over standard lanthanum carbonate tetrahydrate in phosphate binding studies. Lanthanum carbonate dihydrate is useful for the treatment of hyperphosphataemia in patients with renal failure. | 03-08-2012 |
| 20110263852 | NOVEL PROCESS FOR THE PREPARATION OF LAPATINIB AND ITS PHARMACEUTICALLY ACCEPTABLE SALTS - The present invention relates to an improved and novel process for the preparation of high purity crystalline base of Lapatinib of formula-(1) having chemical name N-{3-chloro-4-[(3-fluorobenzyloxy]phenyl}-6-[5-({[2-(methanesulfonyl)ethyl]amino}methyl]-2-furyl]-4-quin-azolinamine and its pharmaceutically acceptable salts. The present invention further relates to intermediates according to formula (8) and formula (9) used in this process | 10-27-2011 |
| 20110190328 | ACID ADDITION SALTS OF (3,5-BIS TRIFLUOROMETHYL)-N-[4-METHYL-3-(4-PYRIDIN-3YL-PYRIMIDIN-2YLAMINO)-PHENYL]- -BENZAMIDE - The present invention relates to acid addition salts of the pharmaceutically active compound (3,5-Bistrifluoromethyl)-N-[4-methyl-3-(4-pyridin-3yl-pyrimidin-2ylamino)-phenyl]-benzamide(I): | 08-04-2011 |
| 20110092717 | PROCESS FOR THE PREPARATION OF HIGH PURITY SUNITINIB AND ITS PHARMACEUTICALLY ACCEPTABLE SALT - The present invention relates to an improved process for the preparation of N-[2-(diethylamino)ethyl]-5-[(Z)-(5-fluoro-1,2-dihydro-2-oxo-3H-indol-3-ylidine)methyl]-2,4-dimethyl-1H-pyrrole-3-carboxamide—Sunitinib base of formula (I) and its pharmaceutically acceptable malate salt of formula (I(a)). | 04-21-2011 |
| 20110039844 | 6-7,DIALKOXY QUINAZOLINE DERIVATIVES USEFUL FOR TREATMENT OF CANCER RELATED DISORDERS - In view of the great potential the quinazoline class of compounds offer, we started the synthesis and screening of a large number of new chemical entities with novel structural features. It has been surprisingly and unexpectedly found that quinazolines having 3-Ethynyl anilino group at the 4th position and specifically substituted alkoxy groups in the 6 and 7 positions, impart much enhanced and special anti-proliferative properties when compared to other prominent members of the quinazoline class of drugs. Also, surprisingly the compounds of this invention are much less toxic and the safety profile is exceedingly beneficial for therapeutic applications. The novel chemical entities described in this invention are designated by the general structure (I) and have not been synthesized earlier nor investigated for their therapeutic benefits and safety profile. Compound (I) is NRC-2694, when structure (A). | 02-17-2011 |
| 20100324265 | PROCESS FOR THE PREPARATION GLATIRAMER ACETATE (COPOLYMER-1) - This invention relates to a convenient and improved process for preparation of glatiramer acetate (copolymer-1) of pharmaceutical grade. The process involves polymerizing N-carboxyanhydrides of tyrosine, alanine, y-benzyl glutamate and &egr;-N-trifluoroacetyllysine in dioxane with diethylamine as initiator to afford protected copolymer-1. Treatment with hydrogen bromide in acetic acid at 35° C. for 3-5 h cleaves benzyl group to produce trifluoroacetyl copolymer-1. The trifluoroacetyl copolymer-1 is washed with an organic solvent to remove reactive benzyl bromide generated during debenzylation. Deprotection with aqueous piperidine, followed by dialysis offers glatiramer acetate (copolymer-1) of Molecular weight 5000-9000 daltons. | 12-23-2010 |
| 20100298351 | NOVEL PYRAZOLO [3, 4 -D] PYRIMIDINE DERIVATIVES AS ANTI-CANCER AGENTS - The invention relates to substituted pyrazolo[3,4-d]pyrimidine derivatives of the Formula-(I), or pharmaceutically-acceptable salts thereof, which possess anti-proliferative activity such as anti-cancer activity and are accordingly useful in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of substituted pyrazolo[3,4-d]pyrimidine derivatives, to pharmaceutical compositions containing the compound and to its use in the manufacture of medicaments for the production of an anti-proliferative effect in a warm-blooded animal such as man. | 11-25-2010 |
| 20100261740 | NOVEL 4-(TETRAZOL-5-YL)-QUINAZOLINE DERIVATIVES AS ANTI CANCER AGENT - The invention relates to substituted 4-(tetrazol-5-yl)-quinazoline derivatives of the formula-I, or pharmaceutically-acceptable salts thereof, which possess anti-proliferative activity such as anti-cancer activity and are accordingly useful in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of substituted 4-(tetrazol-5-yl)-quinazoline derivatives, to pharmaceutical compositions containing the compound and to its use in the manufacture of medicaments for the production of an anti-proliferative effect in a warm-blooded animal such as man. | 10-14-2010 |
| 20100261738 | NOVEL POLYMORPHS OF ERLOTINIB HYDROCHLORIDE AND METHOD OF PREPARATION - The present invention relates to three novel crystalline forms of Erlotinib hydrochloride and method of preparation thereof. Erlotinib hydrochloride is N-(3-ethynylphenyl)-6,7-bis(2-methoxy ethoxy)-4-quinazolinamine hydrochloride of formula-(I). The present invention provides stable novel crystalline forms of Erlotinib hydrochloride designated as Form-M, Form-N and Form-P, and processes for the preparation of the same. Erlotinib hydrochloride can be used as medicament for the treatment of hyperproliferative disorders, such as cancers, in humans. | 10-14-2010 |
| 20090306377 | NOVEL PROCESS FOR THE PREPARTION OF ERLOTINIB - The present invention discloses an improved and novel process for the preparation of erlotinib (N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)-4-quinazolinamine) of formula (1), which comprises: (i) demethylation of commercially available 6,7-dimethoxy-4(3H)-quinazolinone of formula (8); acetylation using acetic anhydride; (iii) introduction of a leaving group at C-4 position in quinazolinone; (iv) condensation with 3-ethynylaniline to get novel compound of formula (12); (v) deacetylation to get novel dihydroxy compound of formula (13); and (vi) O-alkylation with 2-iodoethylmethyl ether to get the erlotinib base of formula (1). Erlotinib base is purified by recrystallization from ethyl acetate to get a HPLC purity of >99.5%. Salt formation of this base with hydrogen chloride gave pharmaceutically acceptable erlotinib hydrochloride of formula (1 | 12-10-2009 |
| 20080306100 | PHENYLAMINOPYRIMIDINE DERIVATIVES AS INHIBITORS OF BCR-ABL KINASE - The present invention relates to novel intermediates useful for the preparation of novel phenylaminopyrimidine derivatives, novel phenylaminopyrimidine derivatives. Pharmaceutical composition containing the novel phenylaminopyrimidine derivatives and processes for their preparation. The invention particularly relates to novel Phenyl pyrimidine amine derivatives of the general formula (I). The novel compounds of the formula 1 can be used in the therapy of Chronic Myeloid Leukemia (CML). Since the IC | 12-11-2008 |
| 20080255138 | Novel Polymorphic Form Of Imatinib Mesylate And A Process For Its Preparation - This invention discloses a novel stable crystal form of imatinib mesylate, designated by us as α | 10-16-2008 |
| 20080249121 | INTERMEDIATES AND A PROCESS EMPLOYING THE INTERMEDIATES FOR THE PREPARATION OF (3-TRIFLUOROMETHYLSULFONYL)-N-[4-METHYL-3-(4-PYRIDIN-3YL-PYRIMIDIN-2YLAMINO)-PHENYL]-BENZAMIDE - This invention relates to a process for the preparation of (3-trifluoromethylsulfonyl)-N-[4-methyl-3-(4-pyridin-3yl-pyrimidin-2ylamino)-phenyl]-benzamide (formula (I)) starting from 4-methyl-2-nitro-aniline (formula (II)) through intermediates (3-trifluoromethylsulfonyl)-N-[4-methyl-3-nitrophenyl]-benzamide (formula (III)), (3-trifluoromethylsulfonyl)-N-[3-amino-4-methylphenyl]-benzamide (formula (IV)) and (3-trifluoromethylsulfonyl)-N-[3-guanidino-4-methylphenyl]-benzamide (formula (V)). This invention also relates to processes for the preparation of these intermediates. The compound of formula (I), also known as AN-024, is: | 10-09-2008 |
