Patent application number | Description | Published |
20120232276 | PROCESS FOR PREPARING MONTELUKAST AND SALTS THEREOF - A method for the preparation of montelukast and salts thereof has been described. The method comprises of following steps: (a) (S)-1-(3-((E)-2-(7-chloroquinolin-2-yl)vinyliphenyl)-3-(2-isopropenylphenyljpropyl methane sulphonate (styrene mesylate salt) (b) coupling with 1-(mercapto methyl)cyclopropane acetic acid followed by salification with an amine gives styrene amine salt (c) Converting styrene amine salt to Montelukast amine salt (d) Converting Montelukast amine salt to Montelukast free acid and or its required alkali/alkaline salt. | 09-13-2012 |
20120264933 | EFFICIENT PROCESS TO INDUCE ENANTIOSELECTIVITY IN PROCARBONYL COMPOUNDS - The present invention provides an efficient method to induce the enantioselectivity in procarbonyl compounds using chiral organometallic complexes. The present invention also provides a method for producing chiral organometallic complexes using a chiral additive, achiral additive, a base and a metal salt. | 10-18-2012 |
20130165413 | PROCESS FOR THE PREPARATION OF TENOFOVIR - The present invention provides a process for the preparation of tenofovir. The present invention also provides a process for the preparation of tenofovir disoproxil or a salt thereof and its pharmaceutical composition using the tenofovir of the present invention. | 06-27-2013 |
20140073791 | NOVEL SALTS OF SITAGLIPTIN, PROCESS FOR THE PREPARATION AND PHARMACEUTICAL COMPOSITION THEREOF - The present invention relates to pharmaceutically acceptable acid addition salts of sitagliptin, in particular anti-oxidant acid addition salts of sitagliptin and a process for its preparation. The present invention also provides a pharmaceutical composition using the pharmaceutically acceptable acid addition salts of sitagliptin. | 03-13-2014 |
20140303368 | PROCESS FOR THE PREPARATION OF TENOFOVIR - The present invention provides a process for preparation of tenofovir by dealkylation of its phosphonate ester using Ionic complexes. The present invention also provides a process for preparation of tenofovir disoproxil or a salt thereof using the tenofovir of the present invention. | 10-09-2014 |
20150031921 | PROCESS FOR THE PREPARATION OF POLYHYDROXYSTILBENE COMPOUNDS BY DEPROTECTION OF THE CORRESPONDING ETHERS - A process for the preparation of polyhydroxystilbene compounds (particularly resveratrol, oxyresveratrol, piceatannol, gnetol and the like) by deprotection of the corresponding ethers using aluminium halide and a secondary amine is provided. | 01-29-2015 |
20150299127 | PROCESS FOR PREPARATION OF MONTELUKAST SODIUM - Disclosed is a process for the preparation of montelukast sodium. The process comprises a) reacting 2-(2-(3(S)-(3-(2-(7-chloro-2-quinolinyl)-ethenyl)phenyl)-3-hydroxypropyl)phenyl)-2-propanol with methane sulfonyl chloride and coupling the resultant mesylate compound with 1-(mercaptomethyl)cyclopropane acetic acid in presence of a base and free alkali source followed by saltification with an amine in a single step reaction and b) converting the montelukast amine salt to montelukast sodium salt. | 10-22-2015 |
20160122274 | Salts of Sitagliptin, Process from the Preparation and Pharmaceutical Composition Therefore - The present invention relates to pharmaceutically acceptable acid addition salts of sitagliptin, in particular anti-oxidant acid addition salts of sitagliptin and a process for its preparation. The present invention also provides a pharmaceutical composition using the pharmaceutically acceptable acid addition salts of sitagliptin. | 05-05-2016 |