Patents by Inventor Anand Prakash Tiwari

Anand Prakash Tiwari 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 AZILSARTAN MEDOXOMIL OR PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF
    Publication number: 20150011774
    Abstract: The present invention relates to a process for the preparation of azilsartan medoxomil or pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: January 30, 2013
    Publication date: January 8, 2015
    Inventors: Md Abul Kalam Azad, Prakash Bhimaji Kshirsagar, Shravan Kumar Singh, Anand Prakash Tiwari, Kaptan Singh, Mohan Prasad, Sudershan Kumar Arora
  • Asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 8212071
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: July 3, 2012
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Synthesis of (S)-(+)-3-(aminomethyl)-5-methyl hexanoic acid
    Patent number: 8097754
    Abstract: Provided are syntheses of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin via a chiral intermediate of the following formula 4 wherein Ar is a C6-10 aromatic group, R is a straight or branched C1-4 alkyl, ester, or carboxylic acid, and R1 is a straight or branched C1-5 alkyl, aralkyl, or substituted aralkyl.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: January 17, 2012
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, Anand Prakash Tiwari, Shivaji Haribhau Shelke
  • Asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 7973196
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: July 5, 2011
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 7960583
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl) -5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: June 14, 2011
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 7923575
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: April 12, 2011
    Assignee: Teva Pharmaceutical Industries Limited
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • NOVEL ASYMMETRIC SYNTHESIS OF (S)-(+)-3-(AMINOMETHYL)-5-METHYLHEXANOIC ACID
    Publication number: 20100324307
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Application
    Filed: August 30, 2010
    Publication date: December 23, 2010
    Inventors: Vinod Kumar KANSAL, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 7851651
    Abstract: (S)-Pregabalin, which has the chemical name (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, is useful in anticonvulsant therapy, primarily due a mechanism that serves to promote the production of gamma-amino butyric acid, an inhibitory neurotransmitter. The invention encompasses new processes for synthesizing (S)-Pregabalin. The invention also comprises certain new compounds that are useful synthetic intermediates in the synthesis of (S)-Pregabalin.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: December 14, 2010
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Novel asymmetric synthesis of (s)-(+)-3-(AMINOMETHYL)-5- methylhexanoic acid
    Publication number: 20100081841
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Application
    Filed: October 19, 2009
    Publication date: April 1, 2010
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 7687656
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: March 30, 2010
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Patent number: 7586005
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: September 8, 2009
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Chiral 3-carbamoylmethyl-5-methyl hexanoic acids, key intermediates for the synthesis of (S)-Pregabalin
    Patent number: 7563923
    Abstract: The invention encompasses the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, via the intermediate, (3R)-5-methyl-3-(2-oxo-2{[(1R)-1-phenylethyl]amino}ethyl)hexanoic acid.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: July 21, 2009
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, Anand Prakash Tiwari
  • Novel asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Publication number: 20090069593
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Application
    Filed: October 28, 2008
    Publication date: March 12, 2009
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Novel asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Publication number: 20090069600
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Application
    Filed: October 28, 2008
    Publication date: March 12, 2009
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Novel asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Publication number: 20090069596
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Application
    Filed: November 4, 2008
    Publication date: March 12, 2009
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V.Govardhan Rao, Anand Prakash Tiwari
  • Novel asymmetric synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid
    Publication number: 20090069578
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Application
    Filed: October 28, 2008
    Publication date: March 12, 2009
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Novel asymmetric synthesis of (S)-(+)-3-(Aminomethyl)-5-methylhexanoic acid
    Publication number: 20090062562
    Abstract: The invention encompasses processes for the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, and intermediates of (S)-Pregabalin.
    Type: Application
    Filed: October 28, 2008
    Publication date: March 5, 2009
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, V. Govardhan Rao, Anand Prakash Tiwari
  • Chiral 3-carbamoylmethyl-5-methyl hexanoic acids, key intermediates for the synthesis of (S)-Pregabalin
    Patent number: 7470812
    Abstract: The invention encompasses the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, via the intermediate, (3R)-5-methyl-3-(2-oxo-2{[(1R)-1-phenylethyl]amino}ethyl)hexanoic acid.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: December 30, 2008
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, Anand Prakash Tiwari
  • Chiral 3-carbamoylmethyl-5-methyl hexanoic acids, key intermediates for the synthesis of (S)-pregabalin
    Patent number: 7465826
    Abstract: The invention encompasses the synthesis of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin, via the intermediate, (3R)-5-methyl-3-(2-oxo-2{[(1R)-1-phenylethyl]amino}ethyl)hexanoic acid.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: December 16, 2008
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, Anand Prakash Tiwari
  • Synthesis of (S)-(+)-3-(aminomethyl)-5-methyl hexanoic acid
    Publication number: 20080306292
    Abstract: Provided are syntheses of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin via a chiral intermediate of the following formula 4 wherein Ar is a C6-10 aromatic group, R is a straight or branched C1-4 alkyl, ester, or carboxylic acid, and R1 is a straight or branched C1-5 alkyl, aralkyl, or substituted aralkyl.
    Type: Application
    Filed: March 24, 2008
    Publication date: December 11, 2008
    Inventors: Vinod Kumar Kansal, Brijnath P. Chaurasia, Anand Prakash Tiwari, Shivaji Haribhau Shelke