Patents by Inventor Juergen Ruppert

Juergen Ruppert 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).

  • Novel bicycloalkane derivatives and the production thereof
    Patent number: 4202991
    Abstract: Bicycloalkane derivatives of the formula ##STR1## wherein n is 1 or 2, R.sub.1 is lower alkyl, Acyl is alkanoyl, and Y is --S--R.sub.2, --SO.sub.m --R.sub.2, or ##STR2## wherein m is 1 or 2, R.sub.2 is alkyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 is acyl or phenyl optionally substituted with lower alkoxy, benzyloxy or alkanoyloxy; and Z is nitro, lower alkoxycarbonyl, lower alkanoyl, lower alkylsulfinyl, or lower alkylsulfonyl are useful intermediates in the total synthesis of steroids. The compounds are prepared by reacting a corresponding compound lacking the CH.sub.2 Y substituent with formaldehyde and a mercaptan or sulfinic acid, followed if desired by oxidation and optional salt condensation.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: May 13, 1980
    Assignee: Schering Aktiengesellschaft
    Inventors: Gerhard Sauer, Helmut Hauser, Gregor Haffer, Juergen Ruppert, Ulrich Eder, Rudolf Wiechert
  • Bicycloalkane derivatives
    Patent number: 4072716
    Abstract: Bicycloalkane derivatives of the formula ##STR1## WHEREIN N IS 1 OR 2, R.sub.1 is lower alkyl, X is carbonyl or free or etherified hydroxymethylene, and Y is --S--R.sub.2, --SO.sub.m --R.sub.2, or ##STR2## wherein m is 1 or 2, R.sub.2 is alkyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 is aliphatic acyl and Z is nitro, lower alkanoyl, lower alkylsulfinyl, or lower alkylsulfonyl are useful intermediates in the total synthesis of steroids. The compounds are prepared by reacting a corresponding compound lacking the CH.sub.2 Y substituent with formaldehyde and a mercaptan or a sulfinic acid, followed if desired by oxidation and optional salt condensation.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: February 7, 1978
    Assignee: Schering Aktiengesellschaft
    Inventors: Gerhard Sauer, Helmut Hauser, Gregor Haffer, Juergen Ruppert, Ulrich Eder, Rudolf Wiechert
  • Novel bicycloalkane derivatives and the production thereof
    Patent number: 4051188
    Abstract: Bicycloalkane derivatives of the formula ##STR1## WHEREIN N IS 1 OR 2, R.sub.1 is lower alkyl, X is carbonyl or a free or etherified hydroxymethylene, and Y is --S--R.sub.2, --SO.sub.m --R.sub.2, or ##STR2## wherein m is 1 or 2, R.sub.2 is aryl or aralkyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 is phenyl optionally substituted with lower alkoxy or benzyloxy, and Z is nitro, lower alkanoyl, lower alkylsulfinyl, or lower alkylsulfonyl, are useful intermediates in the total synthesis of steroids. The compounds are prepared by reacting a corresponding compound lacking the CH.sub.2 Y substituent with formaldehyde and a mercaptan or a sulfinic acid, followed if desired by oxidation and optional salt condensation.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: September 27, 1977
    Assignee: Schering Aktiengesellschaft
    Inventors: Gerhard Sauer, Helmut Hauser, Gregor Haffer, Juergen Ruppert, Ulrich Eder, Rudolf Wiechert