Patents by Inventor Rani Ananta

Rani Ananta 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 Dutasteride
    Patent number: 8563728
    Abstract: The present invention provides an improved process for the preparation of Dutasteride (I) which comprises: (i) reacting 4-aza-5?-androst-1-en-3-one-17?-carboxylic acid (VII), Formula VII with sulfonic acid anhydride (RSO2)2O in presence of base to produce an intermediate compound of Formula (XIII), wherein R represents C1-6 alkyl, C1-6 halo alkyl, C6-10 aryl, halo aryl; (ii) condensing compound of Formula (XIII) with 2,5-bis(trifluoromethyl)aniline (III), Formula (III) in the presence or absence of a base to produce Dutasteride (I).
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: October 22, 2013
    Assignee: Aurobindo Pharma Ltd.
    Inventors: Sambhu Prasad Sarma Mallela, Sukumar Nandi, Balanarasimha Reddy Gona, Naresh Akkina, Rani Ananta, Islam Aminul, Sivakumaran Meenakshisunderam
  • Process for preparing pyrimidine propenaldehyde
    Patent number: 8394956
    Abstract: The present invention relates to an improved process for preparing (2E)-3-[4-(4-fluorophenyl)-6-isopropyl-2-(N-methyl-N-methylsulfonylamino)pyrimidin-5-yl]-propenal of formula (I), which is an useful intermediate in the preparation of Rosuvastatin.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: March 12, 2013
    Assignee: Aurobindo Pharma Ltd.
    Inventors: Sambhu Prasad Sarma Mallela, Sukumar Nandi, Gangadhara Bhima Shankar Nangi, Rani Ananta, Sivakumaran Meenakshisunderam
  • Process for the preparation of Irbesartan
    Patent number: 8106216
    Abstract: The present invention relates to an improved process for the preparation of 2-n-butyl-3-[[2?-(1H-tetrazol-5-yl)[1,1?-biphenyl]-4-yl]-1,3-diazaspiro[4.4]non-1-en-4-one (Irbesartan).
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: January 31, 2012
    Assignee: Aurobindo Pharma Ltd.
    Inventors: Venkata vara prasada rao Korrapati, Venkata subramanyeswara rao Inti, Rani Ananta, Ramesh Dandala, Sivakumaran Meenakshisunderam
  • Process for preparing pyrimidine propenaldehyde
    Publication number: 20110178296
    Abstract: The present invention relates to an improved process for preparing (2E)-3-[4-(4-fluorophenyl)-6-isopropyl-2-(N-methyl-N-methylsulfonylamino)pyrimidin-5-yl]-propenal of formula (I), which is an useful intermediate in the preparation of Rosuvastatin.
    Type: Application
    Filed: September 23, 2009
    Publication date: July 21, 2011
    Inventors: Sambhu Prasad Sarma Mallela, Sakumar Nandi, Gangadhara Bhima Shankar Nangi, Rani Ananta, Sivakumaran Meenakshiunderam
  • Process for the Preparation of Irbesartan
    Publication number: 20100056797
    Abstract: The present invention relates to an improved process for the preparation of 2-n-butyl-3-[[2?-(1H-tetrazol-5-yl)[1,1?-biphenyl]-4-yl]-1,3-diazaspiro[4.
    Type: Application
    Filed: April 23, 2007
    Publication date: March 4, 2010
    Inventors: Venkata vara prasada rao Korrapati, Venkata subramanyeswara rao Inti, Rani Ananta, Ramesh Dandala, Sivakumaran Meenakshisunderam