Patents by Inventor Gyan Chand Yadav

Gyan Chand Yadav has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of 1, 2, 4-trioxolane antimalarials
    Patent number: 8754243
    Abstract: This invention relates to an improved process for the preparation of compounds of Formula I, salts of the free base cis-adamantane-2-spiro-3?-8?-[[[(2?-amino-2?-methylpropyl)amino]carbonyl]methyl]-1?,2?,4?-trioxaspiro[4.5]decane, Formula (I) wherein X is an anion. The compounds of Formula (I) have antimalarial activity.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: June 17, 2014
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Gyan Chand Yadav, Harish N. Dorwal, Pooja Tanwar, Udai Bhan Singh Gahlot
  • Process for the preparation of dispiro 1,2,4-trioxolane antimalarials (OZ277)
    Patent number: 8569519
    Abstract: This invention relates to an improved process for the preparation of a compound of Formula (I), salts of the free base cis-adamantane-2-spiro-3?-8?-[[[(2?-amino-2?-methyl propyl)amino]carbonyl]methyl]-1?,2?,4?-trioxaspiro[4.5]decane wherein X can be an anion.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: October 29, 2013
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Gyan Chand Yadav, Harish N. Dorwal, Srinivas Valavala, Vinod Kumar Sharma
  • PROCESS FOR THE PREPARATION OF 1, 2, 4-TRIOXOLANE ANTIMALARIALS
    Publication number: 20120178944
    Abstract: This invention relates to an improved process for the preparation of compounds of Formula I, salts of the free base cis-adamantane-2-spiro-3?-8?-[[[(2?-amino-2?-methyl propyl)amino]carbonyl]methyl]-1?,2?,4?-trioxaspiro[4.5]decane, Formula (I) wherein X is an anion. The compounds of Formula (I) have antimalarial activity.
    Type: Application
    Filed: April 15, 2010
    Publication date: July 12, 2012
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Gyan Chand Yadav, Harish N. Dorwal, Pooja Tanwar, Udai Bhan Singh Gahlot
  • PROCESS FOR (3R, 5R)-7-[2-(4-FLUOROPHENYL)-5-ISOPROPYL-3-PHENYL-4- [(4-HYDROXY METHYL PHENYL AMINO) CARBONYL]-PYRROL-1-YL]-3, 5-DIHYDROXY-HEPTANOIC ACID HEMI CALCIUM SALT
    Publication number: 20120029208
    Abstract: The present invention relates to processes for the manufacture of (3R,5R)-7-[2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-[(4-hydroxy methyl phenyl amino)carbonyl]-pyrrol-1-yl]-3,5-dihydroxy-heptanoic acid hemi calcium salt.
    Type: Application
    Filed: September 27, 2011
    Publication date: February 2, 2012
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Vijay KAUL, Gyan Chand YADAV
  • Process for (3R, 5R)-7-[2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-[(4-hydroxy methyl phenyl amino) carbonyl]-pyrrol-1-yl]-3,5-dihydroxy-heptanoic acid hemi calcium salt
    Patent number: 8026377
    Abstract: The present invention relates to processes for the manufacture of (3R,5R)-7-[2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-[(4-hydroxy methyl phenyl amino)carbonyl]-pyrrol-1-yl]-3,5-dihydroxy-heptanoic acid hemi calcium salt.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: September 27, 2011
    Assignee: Ranbaxy Laboratories, Limited
    Inventors: Vijay Kaul, Gyan Chand Yadav
  • PROCESS FOR THE PREPARATION OF DISPIRO 1,2,4-TRIOXOLANE ANTIMALARIALS (OZ277)
    Publication number: 20110124886
    Abstract: This invention relates to an improved process for the preparation of a compound of Formula (I), salts of the free base cis-adamantane-2-spiro-3?-8?-[[[(2?-amino-2?-methyl propyl)amino]carbonyl]methyl]-1?,2?,4?-trioxaspiro[4.5]decane wherein X can be an anion.
    Type: Application
    Filed: May 24, 2007
    Publication date: May 26, 2011
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Gyan Chand Yadav, Harish N. Dorwal, Srinivas Valavala, Vinod Kamar Sharma
  • ARYLPIPERAZINE DERIVATIVES AS ADRENERGIC RECEPTOR ANTAGONISTS
    Publication number: 20090312344
    Abstract: The present invention relates to ?1, and/or ?1d adrenergic receptor antagonists, which can function as ?1a and/or ?1d adrenergic receptor antagonist and can be used for the treatment of a disease or disorder mediated through ?1a and/or an adrenergic receptor. Compounds disclosed herein can be used for the treatment of benign prostatic hyperplasia (BPH) and the related symptoms thereof. Further, compounds disclosed herein can be used for the treatment of lower urinary tract symptoms associated with or without BPH. Also provided are processes for preparing such compounds, pharmaceutical compositions thereof, and the methods of treating BPH or related symptoms thereof.
    Type: Application
    Filed: May 31, 2005
    Publication date: December 17, 2009
    Inventors: Mohammad Salman, Somesh Sharma, Gyan Chand Yadav, Gobind Singh Kapkoti, Anurag Mishra, Praful Gupta, Nitya Anand, Anita Chugh, Kamna Nanda
  • Process For (3R, 5R)-7-[2-(4-Fluorophenyl)-5-Isopropyl-3-Phenyl-4- [(4-Hydroxy Methyl Phenyl Amino) Carbonyl]-Pyrrol-1-Yl]-3,5-Dihydroxy-Heptanoic Acid Hemi Calcium Salt
    Publication number: 20080287690
    Abstract: The present invention relates to processes for the manufacture of (3R, 5R)-7-[2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-[(4-hydroxy methyl phenyl amino)carbonyl]-pyrrol-1-yl]-3,5-dihydroxy-heptanoic acid hemi calcium salt.
    Type: Application
    Filed: November 7, 2006
    Publication date: November 20, 2008
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Vijay Kaul, Gyan Chand Yadav
  • Polymorphic Forms of an HMG-CoA Reductase Inhibitor and Uses Thereof
    Publication number: 20080153896
    Abstract: The invention provides polymorphic forms of the HMG-CoA reductase inhibitor (3R, 5R)-7-[2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-[(4-hydroxymethylphenylamino)carbonyl]-pyrrol-1-yl]-3,5-dihydroxy-heptanoic acid, hemi calcium salt. The invention also provides methods for preparing these polymorphic forms, pharmaceutical formulations containing these polymorphic forms and methods of using the polymorphic forms of this HMG-CoA reductase inhibitor.
    Type: Application
    Filed: July 13, 2007
    Publication date: June 26, 2008
    Inventors: Gyan Chand Yadav, Mohammad Baqer, Vishwesh P. Pandya
  • Process for the preparation of highly pure crystalline (R,S)—cefuroxime axetil
    Patent number: 6833452
    Abstract: A process for the preparation of highly pure crystalline form of cefuroxime-1-acetoxyethyl ester (cefuroxime axetil) from cefuroxime by reacting an amine salt of cefuroxime with an esterifying reagent.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: December 21, 2004
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Om Dutt Tyagi, Gyan Chand Yadav, Vijay Kumar Handa
  • Process for the preparation of highly pure crystalline (R,S) - cefuroxime axetil
    Publication number: 20020016456
    Abstract: A process for the preparation of highly pure crystalline form of cefuroxime-1-acetoxyethyl ester (cefuroxime axetil) from cefuroxime by reacting an amine salt of cefuroxime with an esterifying reagent.
    Type: Application
    Filed: July 16, 2001
    Publication date: February 7, 2002
    Inventors: Om Dutt Tyagi, Gyan Chand Yadav, Vijay Kumar Handa