Patents Assigned to Laurus Labs Private Limited
  • Process for preparing Montelukast and salts thereof
    Patent number: 8367834
    Abstract: 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)vinyl)phenyl)-3-(2-isopropenylphenyljpropyl methane sulphonate (styrene mesylate salt) (b) coupling with 1-(mercaptomethyl)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.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: February 5, 2013
    Assignee: Laurus Labs Private Limited
    Inventors: Venkata Sunil Kumar Indukuri, Srinivas Simhadri, Satyanarayana Chava
  • Pterostilbene cocrystals
    Patent number: 8318807
    Abstract: Cocrystals of pterostilbene are disclosed, including: pterostilbene:caffeine cocrystal, pterostilbene:carbamazepine cocrystal, pterostilbene:glutaric acid cocrystal, and pterostilbene:piperazine cocrystal. The pterostilbene:caffeine cocrystal is polymorphic. Forms I and II of the pterostilbene:caffeine cocrystal are disclosed. The therapeutic uses of the pterostilbene cocrystals and of pharmaceutical/nutraceutical compositions containing them are also disclosed. The disclosure sets out various methods of making and characterizing the pterostilbene cocrystals.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: November 27, 2012
    Assignee: Laurus Labs Private Limited
    Inventors: Nathan C. Schultheiss, Sarah J. Bethune
  • EFFICIENT PROCESS TO INDUCE ENANTIOSELECTIVITY IN PROCARBONYL COMPOUNDS
    Publication number: 20120264933
    Abstract: 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.
    Type: Application
    Filed: June 22, 2012
    Publication date: October 18, 2012
    Applicant: Laurus Labs Private Limited
    Inventors: Ravindra Babu BOLLU, Narasimha Rao Ketavarapu, Venkata Sunil Kumar Indukuri, Seeta Ramanjaneyulu Gorantla, Satyanarayana Chava
  • Process for preparing montelukast and salts thereof
    Patent number: 8207343
    Abstract: 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)vinyl)phenyl)-3-(2-isopropenylphenyl)propyl 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.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: June 26, 2012
    Assignee: Laurus Labs Private Limited
    Inventors: Venkata Sunil Kumar Indukuri, Srinivas Simhadri, Satyanarayana Chava