Patents by Inventor Hans-Peter Spitzenstätter

Hans-Peter Spitzenstätter 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).

  • Process for the preparation of carbamoylamino pyrazole derivatives
    Patent number: 10351533
    Abstract: The present invention relates to a process for the preparation of carbamoylamino pyrazole derivatives using diacetoxyiodobenzene (PhI(OAc)2) in combination with a non-nucleophilic base.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: July 16, 2019
    Assignee: Sandoz AG
    Inventors: Olga Schöne, Hans-Peter Spitzenstätter, Marius Kaufmann
  • Process for the Preparation of Carbamoylamino Pyrazole Derivatives
    Publication number: 20180305319
    Abstract: The present invention relates to a process for the preparation of carbamoylamino pyrazole derivatives using diacetoxyiodobenzene (PhI(OAc)2) in combination with a non-nucleophilic base.
    Type: Application
    Filed: June 28, 2016
    Publication date: October 25, 2018
    Applicant: Sandoz AG
    Inventors: Olga SCHÖNE, Hans-Peter Spitzenstätter, Marius KAUFMANN
  • Synthesis of Phosphoramidates
    Publication number: 20180162896
    Abstract: A process for preparing a nucleoside phosphoramidate, in particular to a process for preparing sofosbuvir, wherein a phosphoramidate derivative is used as starting material.
    Type: Application
    Filed: May 26, 2016
    Publication date: June 14, 2018
    Applicant: Sandoz AG
    Inventors: Thorsten Wilhelm, Olga Schöne, Hans-Peter Spitzenstätter
  • Synthesis of Phosphoramidates
    Publication number: 20170218006
    Abstract: A process for the preparation of a compound of formula (I) including all isomers, stereoisomers, enantiomers and diastereomers thereof (I), and salts thereof; the process comprising providing a mixture comprising a compound of formula (II) and a compound of formula (III) subjecting the mixture provided in a) to reaction conditions in the presence of one or more Lewis acids to the mixture provided in a), obtaining a mixture comprising the compound of formula (I).
    Type: Application
    Filed: July 31, 2015
    Publication date: August 3, 2017
    Applicant: Sandoz AG
    Inventors: Thorsten Wilhelm, Hans-Peter Spitzenstätter, Olga Schöne, Frank Richter, Erwin Schreiner
  • Process for the preparation of chiral triazolones
    Patent number: 9040539
    Abstract: A process for the preparation of a chiral compound, in particular posaconazole, wherein the process comprises mixing and reacting the compounds of formula (I) Y3—NH2; of formula (IIa) 0=C?N—Y0 and/or of formula (IIb) and of formula (III) in a solvent in any order to obtain a reaction mixture containing a chiral compound of formula (IV) and/or formula (V).
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: May 26, 2015
    Assignee: SANDOZ AG
    Inventors: Michael Oberhuber, Joerg Salchenegger, Dominic De Souza, Martin Albert, Thorsten Wilhelm, Martin Langner, Hubert Sturm, Hans-Peter Spitzenstaetter
  • PROCESS FOR THE PREPARATION OF CHIRAL TRIAZOLONES
    Publication number: 20130210833
    Abstract: A process for the preparation of a chiral compound, in particular posaconazole, wherein the process comprises mixing and reacting the compounds of formula (I) Y3—NH2; of formula (IIa) 0=C?N—Y0 and/or of formula (IIb) and of formula (III) in a solvent in any order to obtain a reaction mixture containing a chiral compound of formula (IV) and/or formula (V).
    Type: Application
    Filed: May 18, 2011
    Publication date: August 15, 2013
    Applicant: Sandoz AG
    Inventors: Michael Oberhuber, Joerg Salchenegger, Dominic De Souza, Martin Albert, Thorsten Wilhelm, Martin Langner, Hubert Sturm, Hans-Peter Spitzenstaetter