Patents by Inventor Stefan Sahli

Stefan Sahli 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).

  • Patent number: 11629161
    Abstract: Intermediate compounds are described herein and which are used to manufacture a crystalline compound 1-cyano-2-(4-cyclopropyl-benzyl)-4-(?-D-glucopyranos-1-yl)-benzene L-proline monohydrate.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: April 18, 2023
    Inventors: Matthias Eckhardt, Monika Brink, Frank Himmelsbach, Stefan Sahli, Chutian Shu, Xiao-Jun Wang, Beat Theodor Weber, Bing-Shiou Yang
  • Publication number: 20220081461
    Abstract: Intermediate compounds are described herein and which are used to manufacture a crystalline compound 1-cyano-2-(4-cyclopropyl-benzyl)-4-(?-D-glucopyranos-1-yl)-benzene L-proline monohydrate.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 17, 2022
    Inventors: Matthias ECKHARDT, Monika BRINK, Frank HIMMELSBACH, Stefan SAHLI, Chutian SHU, Xiao-Jun WANG, Beat Theodor WEBER, Bing-Shiou YANG
  • Patent number: 11225500
    Abstract: The invention relates to a process for the manufacture of the crystalline compound according to formula (I) comprising the steps (a) deacetylating the final intermediate (FI), (b) forming the crystalline compound according to formula (I) by reacting the deacetylated final intermediate of step (a) with L-proline and water and isolating the final reaction product; processes of manufacturing intermediates thereof; process intermediates and their uses in the processes according to the present invention.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: January 18, 2022
    Inventors: Matthias Eckhardt, Monika Brink, Frank Himmelsbach, Stefan Sahli, Chutian Shu, Xiao-Jun Wang, Beat Theodor Weber, Bing-Shiou Yang
  • Publication number: 20210139520
    Abstract: The invention relates to a process for the manufacture of the crystalline compound according to formula (I) comprising the steps (a) deacetylating the final intermediate (FI), (b) forming the crystalline compound according to formula (I) by reacting the deacetylated final intermediate of step (a) with L-proline and water and isolating the final reaction product; processes of manufacturing intermediates thereof; process intermediates and their uses in the processes according to the present invention.
    Type: Application
    Filed: December 17, 2018
    Publication date: May 13, 2021
    Inventors: Matthias ECKHARDT, Monika BRINK, Frank HIMMELSBACH, Stefan SAHLI, Chutian SHU, Xiao-Jun WANG, Beat Theodor WEBER, Bing-Shiou YANG
  • Patent number: 10035807
    Abstract: The present invention relates to a method of preparing a compound of Formula II-a? or Formula II-b?, wherein RI represents hydrogen or a linear, branched and/or cyclic alkyl or alkenyl group having 1 to 10 carbon atoms; RII represents a linear, branched and/or cyclic alkyl or alkenyl group having 1 to 10 carbon atoms; RIII represents hydrogen or a linear, branched and/or cyclic alkyl or alkenyl group having 1 to 10 carbon atoms or a linear, branched and/or cyclic alkoxy group having 1 to 10 carbon atoms; RIV represents hydrogen or a linear, branched and/or cyclic alkyl group having 1 to 10 carbon atoms or an optionally substituted aryl or alkylaryl group having 6 to 40 carbon atom or acetyl or silyl or a protective group; and RV represents hydrogen or a methyl group; wherein RI and RII are different from each other.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: July 31, 2018
    Assignee: SIEGFRIED AG
    Inventors: Stefan Sahli, Beat Theodor Weber
  • Publication number: 20180051032
    Abstract: The present invention relates to a method of preparing a compound of Formula II-a? or Formula II-b?, wherein RI represents hydrogen or a linear, branched and/or cyclic alkyl or alkenyl group having 1 to 10 carbon atoms; RII represents a linear, branched and/or cyclic alkyl or alkenyl group having 1 to 10 carbon atoms; RIII represents hydrogen or a linear, branched and/or cyclic alkyl or alkenyl group having 1 to 10 carbon atoms or a linear, branched and/or cyclic alkoxy group having 1 to 10 carbon atoms; RIV represents hydrogen or a linear, branched and/or cyclic alkyl group having 1 to 10 carbon atoms or an optionally substituted aryl or alkylaryl group having 6 to 40 carbon atom or acetyl or silyl or a protective group; and RV represents hydrogen or a methyl group; wherein RI and RII are different from each other.
    Type: Application
    Filed: March 11, 2016
    Publication date: February 22, 2018
    Applicant: SIEGFRIED AG
    Inventors: Stefan SAHLI, Beat Theodor WEBER
  • Publication number: 20150183727
    Abstract: The present invention refers to the preparation of 1-aryl-1-alkyl-2-alkyl-3-dialkylamino-propane compounds, such as tapentadol, using a diastereoselective Eschenmoser-Claisen or Ireland-Claisen rearrangement.
    Type: Application
    Filed: June 14, 2013
    Publication date: July 2, 2015
    Inventors: Patrick Cyr, Roger Crump, Stefan Sahli, Vinzenz Blum
  • Patent number: 8921557
    Abstract: The present invention relates to a novel process for preparing opiates or salts thereof. More particularly, the present invention relates to oxidizing the starting material in a continuous flow reactor, followed by either an isolation of the intermediate, or a direct reduction reaction.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: December 30, 2014
    Assignee: Siegfried AG
    Inventors: Beat Weber, Stefan Sahli
  • Publication number: 20130035489
    Abstract: The present invention relates to a novel process for preparing opiates or salts thereof. More particularly, the present invention relates to oxidizing the starting material in a continuous flow reactor, followed by either an isolation of the intermediate, or a direct reduction reaction.
    Type: Application
    Filed: March 21, 2011
    Publication date: February 7, 2013
    Applicant: Siegfried AG
    Inventors: Beat Weber, Stefan Sahli