Patents by Inventor René Emmengger

René Emmengger 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 PREPARING 3-[(4S)-8-BROMO-1-METHYL-6-(2-PYRIDINYL)-4H-IMIDAZO[1,2-A][1,4]BENZODIAZEPINE-4-YL]PROPIONIC ACID METHYL ESTER OR THE BENZENE SULFONATE SALT THEREOF, AND COMPOUNDS USEFUL IN THAT PROCESS
    Publication number: 20120330007
    Abstract: The invention concerns a new process for preparing 3-[(4S)-8-bromo-1-methyl-6-(2-pyridinyl)-4H-imidazo[1,2-a][1,4]benzodiazepine-4-yl]-propionic acid methyl ester or 3-[(4S)-8-bromo-1-methyl-6-(2-pyridinyl)-4H-imidazo[1,2-a][1,4]benzodiazepine-4-yl]propionic acid methyl ester benzene sulfonate (P) which comprises reacting 3-[(S)-7-bromo-2-((R and/or S)-2-hydroxy-propylamino)-5-pyridin-2-yl-3H-benzo[e][1,4]diazepin-3-yl]-propionic acid methyl ester of formula (EM) with an oxidizing agent and optionally treating the reaction product under acidic conditions, such as to produce the compound of formula (F) or the compound (P), and new compounds useful as starting material or as intermediate for performing that process.
    Type: Application
    Filed: September 15, 2010
    Publication date: December 27, 2012
    Applicant: PAION UK Limited
    Inventors: Gary Stuart Tilbrook, Andreas Schumacher, René Emmengger