Patents Assigned to Biochemie Gesellschaft
  • Process for the production of cephalosporines
    Patent number: 6169180
    Abstract: The invention relates to a new economical and simple process, using a new intermediate compound, for the production of 3′-substituted 7-amino-3-propenyl-4-cephem-carboxylic acid derivatives of formula wherein R is hydrogen, a negative charge or a silyl protecting group, Ro is hydrogen or methoxy, R1 is hydrogen or a silyl protecting group and X is the radical of a nucleophile, and their acid addition salts.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: January 2, 2001
    Assignee: Biochemie Gesellschaft
    Inventors: Johannes Ludescher, Hubert Sturm, Josef Wieser
  • Cephalosporines
    Patent number: 5686604
    Abstract: The invention relates to a new economical and simple process, using a new intermediate compound, for the production of 3'-substituted 7-amino-3-propenyl-4-cephem-carboxylic acid derivatives of formula ##STR1## wherein R is hydrogen, a negative charge or a silyl protecting group, R.sub.o is hydrogen or methoxy, R.sub.1 is hydrogen or a silyl protecting group and X is the radical of a nucleophile, and their acid addition salts.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: November 11, 1997
    Assignee: Biochemie Gesellschaft
    Inventors: Johannes Ludescher, Hubert Sturm, Josef Wieser