Patents by Inventor Nageshwara Rao Achanta

Nageshwara Rao Achanta 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 enantiomeric resolution of apremilast intermediates
    Patent number: 10370329
    Abstract: A process for the resolution of racemic 2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine using novel chiral salts is disclosed. An L-phenylalanine p-toluene-sulfonamide salt of (S)-2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine and a di-p-toluoyl-L-tartaric acid salt of (S)-2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine are also provided.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 6, 2019
    Inventors: Ramesh Dandala, Sureshbabu Jayachandra, Vipin Kumar Kaushik, Nageshwara Rao Achanta, Sivaprasad Dorasala
  • PROCESS FOR THE ENANTIOMERIC RESOLUTION OF APREMILAST INTERMEDIATES
    Publication number: 20180134660
    Abstract: A process for the resolution of racemic 2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine using novel chiral salts is disclosed. An L-phenylalanine p-toluene-sulfonamide salt of (S)-2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine and a di-p-toluoyl-L-tartaric acid salt of (S)-2-(3-ethoxy-4-methoxyphenyl)-1-(methylsulphonyl)-eth-2-ylamine are also provided.
    Type: Application
    Filed: April 22, 2016
    Publication date: May 17, 2018
    Applicant: Mylan Laboratories Limited
    Inventors: Ramesh Dandala, Sureshbabu Jayachandra, Vipin Kumar Kaushik, Nageshwara Rao Achanta, Sivaprasad Dorasala