Patents by Inventor DAMMALAPATI VENKATA LAKSHMI NARASIMHARAO

DAMMALAPATI VENKATA LAKSHMI NARASIMHARAO 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).

  • QUINOLINE CARBOXYLIC ACID-O,O BIS-ACYLOXY BORATE AND PROCESS OF MAKING
    Publication number: 20090259041
    Abstract: The intermediate (4aS-Cis)-1-cyclopropyl-7-(2,8-diazabicyclo[4.3.0]non-8-yl)-6-fluoro-8-me-thoxy-4-oxo-1,4-dihydro-3-quinoline carboxylic acid-O3,O4)bis(acyloxy-0) borate and a method of preparation. The intermediate is useful in an improved process for the preparation of moxifloxacin hydrochloride from ethyl 1-cyclopropyl 6,7-difluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxylate.
    Type: Application
    Filed: January 30, 2009
    Publication date: October 15, 2009
    Inventors: CHAVA SATYANARAYANA, GORANTLA SEETA RAMANJANEYULU, VASIREDDY UMAMAHESWARA RAO, DAMMALAPATI VENKATA LAKSHMI NARASIMHARAO