Patents by Inventor Parvathaneni Sai PRATHIMA

Parvathaneni Sai PRATHIMA 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).

  • 3-substituted-3-hydroxy oxindole derivatives and process for preparation thereof
    Patent number: 8933248
    Abstract: The present invention relates to expedient method for synthesis of 3-substituted-3-hydroxy-oxindole derivatives, which are useful as synthetic precursors to valuable pharmaceutical compounds. These are synthesized by reacting nitromethane with the corresponding isatins of formula (I). The reaction process of isatins was carried using water as a solvent at room temperature to form the corresponding 3-hydroxy-3-nitromethylindolin-2-ones of formula (II).
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: January 13, 2015
    Assignee: Council of Scientific & Industrial Research
    Inventors: Mandapati Mohan Rao, Parvathaneni Sai Prathima
  • 3-SUBSTITUTED-3-HYDROXY OXINDOLE DERIVATIVES AND PROCESS FOR PREPARATION THEREOF
    Publication number: 20130345438
    Abstract: The present invention relates to expedient method for synthesis of 3-substituted-3-hydroxy-oxindole derivatives, which are useful as synthetic precursors to valuable pharmaceutical compounds. These are synthesized by reacting nitromethane with the corresponding isatins of formula (I). The reaction process of isatins was carried using water as a solvent at room temperature to form the corresponding 3-hydroxy-3-nitromethylindolin-2-ones of formula (II).
    Type: Application
    Filed: June 19, 2013
    Publication date: December 26, 2013
    Inventors: Mandapati Mohan RAO, Parvathaneni Sai PRATHIMA