Patents by Inventor Soma Rani SARKAR

Soma Rani SARKAR 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 ROXADUSTAT AND ITS INTERMEDIATES
    Publication number: 20200299242
    Abstract: The present invention provides the process for the preparation of Roxadustat and its intermediates. Another aspect of the present invention provides a process for preparation of ethyl-5-(2-butoxycarbonyl)-4-phenoxyphenyl) oxazole-4-carboxylate of the formula (X) and its use in the preparation of Roxadustat. Another aspect of the present invention provides a process for the preparation of ethyl-4-hydroxy-1-methyl-7-phenoxyisoquinoline-3-carboxylate of the formula (XIII) and its use in the preparation of Roxadustat.
    Type: Application
    Filed: November 30, 2018
    Publication date: September 24, 2020
    Inventors: Amarnath Reddy LEKKALA, Jaydeepkumar DAHYABHAI LILAKAR, Mohammad AASEEF, Rehani Rajeev BUDHDEV, Sekhar Munaswamy NARIYAM, Rakeshwar BANDICHHOR, Sharad Santu PACHORE, Soma Rani SARKAR, Babu IRENI, Deep MALA, Kiran Kumar DONIPARTHI, Venkata Krishna Rao BADARLA
  • PROCESS FOR PREPARATION OF APREMILAST AND ITS INTERMEDIATES
    Publication number: 20180334429
    Abstract: Present application relates to the process for the preparation of 1-(3-Ethoxy-4-methoxy-phenyl)-2-methanesulf-onyl-ethylamine of the formula (II), its resolution and its use in preparation of Apremilast of formula (I), process for the preparation of crystalline form B of apremilast, process for preparation of amorphous form of apremilast and the crystalline form of (S)-1-(3-Eth-oxy-4-methoxy-phenyl)-2-methanesulfonyl-ethylamine of the formula (Va).
    Type: Application
    Filed: June 8, 2016
    Publication date: November 22, 2018
    Inventors: Sree Naga Venkata Lakshmi Vara Prasad VAKAMUDI, Syam Kumar Unniaran KUNHIMON, Soma Rani SARKAR, Babu IRENI, Amarnath Reddy LEKKALA, Gangadhara Chary RAPAKA, Srinivasa Rao MADARAPU, Ramesh Kumar NADGOUD, Sridhar CHAGANTI, Venkateswarlu MUVVA, Anna FRYSZKOWSKA, Martin FOX, Tamara Fanjul SOLARES, Vijay Kumar SHANGAPU, Nilesh HASTAK, Sunitha VYALA, Srininvasulu RANGINENI