Patents Assigned to Boehringer Ingelheim Pharma AG
  • Process for preparing a scopine ester intermediate
    Patent number: 6506900
    Abstract: The invention relates to a new process for preparing a scopine ester useful as an intermediate in preparing (1&agr;,2&bgr;,4&bgr;,5&agr;,7&bgr;)-7-[(hydroxydi-2-thienylacetyl)oxy]-9,9-dimethyl-3-oxa-9-azoniatricyclo[3.3.1.02,4] nonane-bromide.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: January 14, 2003
    Assignee: Boehringer Ingelheim Pharma AG
    Inventors: Rolf Banholzer, Manfred Graulich, Sven Luettke, Andreas Mathes, Helmut Meissner, Peter Specht, Wolfgang Broeder