Patents Assigned to Chem. pharmaz. Fabrik Dr. Hermann Thiemann GmbH
  • Dithia-tetraazacyclooctane-tetraoxides
    Patent number: 3996242
    Abstract: The present invention relates to novel 1,5-dithia-2,4,6,8-tetra-aza-cyclooctane-1,1,5,5-tetraoxides of the formula: ##STR1## wherein R represents halogen or a (lower) alkylsulphonyl radical,R.sub.1 represents hydrogen or chlorine.The compounds according to the present invention exert valuable bacteriostatic, bactericidal, virostatic, cytostatic and immunosuppressive activities.
    Type: Grant
    Filed: November 14, 1975
    Date of Patent: December 7, 1976
    Assignee: Chem. Pharmaz. Fabrik Dr. Hermann Thiemann GmbH
    Inventors: Jurgen Dusemund, Paul Richard Bock
  • 11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione and derivatives
    Patent number: 3978081
    Abstract: Benzopyrano-benzopyranes and the sulfur analogs thereof, benzothiopyranobenzothiopyranes, useful as medicinal agents. Compositions of matter including 11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione or 11H,12H-[1]benzothiopyrano[2,3-b][1]benzothiopyran-11,12-dione, and derivatives thereof including acid addition salts.
    Type: Grant
    Filed: March 12, 1975
    Date of Patent: August 31, 1976
    Assignee: Chem. pharmaz. Fabrik Dr. Hermann Thiemann GmbH
    Inventors: Fritz Eiden, Hans-Dieter Schweiger