Patents by Inventor Satyanarayana Revu

Satyanarayana Revu 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 THE PREPARATION OF (S)-7-(1-ACRYLOYLPIPERIDIN-4-YL)-2-(4-PHENOXYPHENYL)-4,5,6,7-TETRAHYDROPYRAZOLO[1,5-A]PYRIMIDINE-3-CARBOXAMIDE OR ITS SALTS THEREOF
    Publication number: 20240018152
    Abstract: The present invention relates to a novel process for the preparation of (S)-7-(1-acryloylpiperidin-4-yl)-2-(4-phenoxyphenyl)-4, 5, 6, 7-tetrahydropyrazolo[1,5-a] pyrimidine-3-carboxamide of formula-1 or its salts. The present invention also relates to novel process for the preparation of intermediate compound of Formula-7 and recovery of the intermediate compound of Formula-12, which is used in the preparation of compound of Formula-7. The compounds of formula-1 & formula-7 are represented by following structural formulae.
    Type: Application
    Filed: November 15, 2022
    Publication date: January 18, 2024
    Applicant: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Satyanarayana REVU, Srinivas Reddy GADE, Malla Reddy ADLA, Naveen RAGAM
  • POLYMORPHS OF 7-CYCLOPENTYL-N,N-DIMETHYL-2-{[5-(PIPERAZIN-1-YL) PYRIDIN-2-YL]-AMINO}-7H-PYRROLO[2,3-D]PYRIMIDINE-6-CARBOXAMIDE AND ITS PHARMACEUTICALLY ACCEPTABLE SALTS AND PROCESS FOR THE PREPARATION THEREOF
    Publication number: 20220204514
    Abstract: The present invention relates to novel crystalline forms of butanedioic acid 7-cyclopentyl-N,N-dimethyl-2-{[5-(piperazin-1-yl) pyridin-2-yl]amino}-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide of formula-la and process for preparation thereof. The present invention also relates to a process for the preparation of 7-cyclopentyl-N,N-dimethyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}-7H-pyrrolo[2,3-d] pyrimidine-6-carboxamide. Further, the present application also relates to acid addition salts of 7-cyclopentyl-N,N-dimethyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}-7H-pyrrolo[2,3-d] pyrimidine-6-carboxamide and process for the preparation thereof.
    Type: Application
    Filed: April 29, 2020
    Publication date: June 30, 2022
    Applicant: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Satyanarayana REVU, Rajeshwar Reddy SAGYAM, Srinivasulu RANGINENI, Ravichandran SRINIVASAN, Venkata Narasayya SALADI, Naveen RAGAM
  • AN IMPROVED PROCESS FOR THE PREPARATION OF (2S)-2-[(4R)-2-OXO-4-PROPYLTETRAHYDRO-1H-PYRROL-1-YL] BUTANAMIDE AND ITS INTERMEDIATES THEREOF
    Publication number: 20210163410
    Abstract: The present invention relates to an improved process for the preparation of (2S)-2-[(4R)-2-oxo-4-propyltetrahydro-1H-pyrrol-1-yl] butanamide compound of formula-1, its intermediates, novel salt compounds of intermediates of the compound of formula-1. Further the use of novel salts in the preparation of the compound of formula-1. The present invention also relates to the novel process for the preparation of the compound of formula-1.
    Type: Application
    Filed: May 29, 2018
    Publication date: June 3, 2021
    Applicant: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Satyanarayana REVU, Prabhakar CHERKUPALLY
  • Polymorphic forms of vardenafil
    Patent number: 7977478
    Abstract: Crystalline polymorphic forms of vardenafil and vardenafil hydrochloride, and processes for preparing them.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: July 12, 2011
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Eswaraiah Sajja, Ravindar Reddy Koppera, Satyanarayana Revu, Venkata Reddy Vajrala, Vijayapal Reddy Kanumathi
  • POLYMORPHIC FORMS OF VARDENAFIL
    Publication number: 20070197535
    Abstract: Crystalline polymorphic forms of vardenafil and vardenafil hydrochloride, and processes for preparing them.
    Type: Application
    Filed: September 27, 2006
    Publication date: August 23, 2007
    Inventors: Eswaraiah Sajja, Ravindar Koppera, Satyanarayana Revu, Venkata Vajrala, Vijayapal Kanumathi