Patents Examined by Mulund J. Shah
  • Endothelin receptor antagonists
    Patent number: 5726194
    Abstract: Novel compounds of the formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, --A.dbd.B--C.dbd.D--, Ar and X have the meaning indicated in claim 1, and their salts show endothelin receptor-antagonistic properties.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: March 10, 1998
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Mathias Osswald, Werner Mederski, Dieter Dorsch, Claudia Wilm, Claus Schmitges, Maria Christadler