Patents by Inventor Ramamohan Rao Davuluri

Ramamohan Rao Davuluri 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).

  • Novel Process for Preparation of Indacaterol or Its Pharmaceutically Acceptable Salts
    Publication number: 20160326118
    Abstract: A novel process the for preparation of Indacaterol or its pharmaceutically acceptable salts and novel intermediates employed in the preparation thereof that is economically significant for large scale.
    Type: Application
    Filed: December 27, 2014
    Publication date: November 10, 2016
    Inventor: Ramamohan Rao DAVULURI
  • Process for preparation of (1S, 3S, 5S)-2-[(2S)-2-amino-2-(3-hydroxy-I-adamantyl) acetyl]-2-azabicyclo [3.1.0] hexane-3-carbonitrile
    Patent number: 9199933
    Abstract: Provided are novel processes for the preparation of Saxagliptin and novel intermediates employed in the process for preparing Saxagliptin.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: December 1, 2015
    Inventor: Ramamohan Rao Davuluri
  • Process for the preparation of (R)-N-benzyl-2-acetamido-3-methoxypropionamide
    Patent number: 9199916
    Abstract: The invention is a novel process for the preparation of lacosamide by employing novel intermediates of formula III and IV:
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: December 1, 2015
    Assignee: RAMAMOHAN RAO DAVULURI
    Inventors: Ramamohan Rao Davuluri, Guruswamy Batthini, Swetha Mustyala, Sudheer Kallepalli, Praveen Kumar Neela, Ravi Ponnaiah
  • Process for preparation of Sugammadex
    Patent number: 9120876
    Abstract: A novel process for the preparation of 6-perdeoxy-6-per-halo Gamma cyclodextrin which is a useful intermediate in the synthesis of Sugammadex is disclosed in the invention. The process involves reacting Gamma cyclodextrin with phosphorous halide in the presence of organic solvent.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 1, 2015
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Ravi Kanth Sribhashyam, Nandkumar Mecherili Valsan, Naresh Dongari, Prasad Chlnv, Guruswamy Batthini
  • PROCESS FOR PREPARATION OF (IS, 3S, 5S)-2-[(2S)-2-AMIN0-2-(3-HYDROXY-l-ADAMANTYL) ACETYL]-2-AZABICYCLO [3.1.0] HEXANE-3-CARBONITRILE
    Publication number: 20150112084
    Abstract: Provided are novel processes for the preparation of Saxagliptin and novel intermediates employed in the process for preparing Saxagliptin.
    Type: Application
    Filed: April 22, 2013
    Publication date: April 23, 2015
    Inventor: RAMAMOHAN RAO DAVULURI
  • Preparation of 3-[2-[4-((6-fluoro-1, 2-benzisoxazol-3-yl)-l-piperidinyl)-6, 7, 8, 9-tetrahydor-9-hydroxy-2-methyl-4H-pyrido[ 1, 2-A]-pyrimidin-4-one(paliperidone) and paliperidone palmitate
    Patent number: 8940749
    Abstract: An improved process for the synthesis of 3-[2-[4-((6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]-pyrimidin-4-one (Paliperidone) and Paliperidone Palmitate through a novel intermediate (2-Chloroethyl)-6,7,8,9-tetrahydro-2-methyl-9-hydroxy-4H-pyrido [1,2-a]pyrimidine-4-one Palmitate ester.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: January 27, 2015
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Praveen Kumar Neela, Guruswamy Batthini, Telagareddy Venkata Narasimharao, Kosireddy Ravanababu, Kallepally Sudheer
  • Process for the preparation, of 2-(2-hydroxyphenyl)-benz [1, 3] oxazin-4-one and its use for preparation of 4-[3, 5-bis (2-hydroxyphenyl)-IH-I, 2, 4-triazolTI-yl] benzoic acid
    Patent number: 8907083
    Abstract: The invention provides a novel process for the synthesis of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one, the process comprising of reacting the salicylic acid with salicylamide in the presence of p-toluenesulfonyl chloride, base and solvent. The use of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one in the preparation of Deferasirox is also disclosed in the invention.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: December 9, 2014
    Assignee: Ramamohan Rao Davuluri
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Guruswamy Batthni, Chandra Murthy V. R. Medida, Santhosh Dummu
  • NOVEL PROCESS FOR THE PREPARATION OF (R)-N-BENZYL-2-ACETAMIDO-3-METHOXYPROPIONAMIDE
    Publication number: 20140323738
    Abstract: The invention is a novel process for the preparation of lacosamide by employing novel intermediates of formula III and IV:
    Type: Application
    Filed: November 8, 2012
    Publication date: October 30, 2014
    Inventor: RAMAMOHAN RAO DAVULURI
  • Process for preparation of rufinamide
    Patent number: 8871945
    Abstract: The invention relates to a novel, industrially viable, cost effective process for the preparation of 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxamide commonly known as Rufinamide and intermediates thereof.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: October 28, 2014
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Sanjay Kumar Dehury, Selvaraju K., Deepthi VPSS, Dhanunjaya Naidu
  • PROCESS FOR PREPARATION OF SUGAMMADEX
    Publication number: 20140221641
    Abstract: A novel process for the preparation of 6-perdeoxy-6-per-halo Gamma cyclodextrin which is a useful intermediate in the synthesis of Suggamadex is disclosed in the invention. The process involves by reacting Gamma cyclodextrin with phosphorous halide in presence of organic solvent.
    Type: Application
    Filed: August 23, 2011
    Publication date: August 7, 2014
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Ravi Kanth Sribhashyam, Nandkumar Mecherili Valsan, Naresh Dongari, Prasad Chlnv, Guruswamy Batthini
  • PREPARATION OF 3-[2-[4-((6-FLUORO-1, 2-BENZISOXAZOL-3-YL)-L-PIPERIDINYL)-6, 7, 8, 9-TETRAHYDRO-9-HYDROXY-2-METHYL-4H-PYRIDO[ 1, 2-A]-PYRIMIDIN-4-ONE (PALIPERIDONE) AND PALIPERIDONE PALMITATE.
    Publication number: 20140073787
    Abstract: An improved process for the synthesis of 3-[2-[4-((6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]-pyrimidin-4-one (Paliperidone) and Paliperidone Palmitate through a novel intermediate (2-Chloroethyl)-6,7,8,9-tetrahydro-2-methyl-9-hydroxy-4H-pyrido [1,2-a]pyrimidine-4-one Palmitate ester.
    Type: Application
    Filed: May 30, 2012
    Publication date: March 13, 2014
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Praveen Kumar Neela, Guruswamy Batthini, Telagareddy Venkata Narasimharao, Kosireddy Ravanababu, Kallepally Sudheer
  • Process for the preparation, of 2-(2-hydroxyphenyl)-benz [1, 3] oxazin-4-one and its use for preparation of 4-[3, 5-bis (2-hydroxyphenyl)-lH-l , 2, 4-triazolTl-yl] benzoic acid
    Publication number: 20130338356
    Abstract: The invention provides a novel process for the synthesis of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one, the process comprising of reacting the salicylic acid with salicylamide in the presence of p-toluenesulfonyl chloride, base and solvent. The use of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one in the preparation of Deferasirox is also disclosed in the invention.
    Type: Application
    Filed: August 23, 2011
    Publication date: December 19, 2013
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Guruswamy Batthni, Chandra Murthy V. R. Medida, Santhosh Dummu
  • PROCESS FOR PREPARATION OF RUFINAMIDE
    Publication number: 20130184469
    Abstract: The invention relates to a novel, industrially viable, cost effective process for the preparation of 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxamide commonly known as Rufinamide and intermediates thereof.
    Type: Application
    Filed: August 23, 2011
    Publication date: July 18, 2013
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Sanjay Kumar Dehury, Selvaraju K., Deepthi VPSS, Dhanunjaya Naidu