Patents by Inventor Erwin Schreiner
Erwin Schreiner 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).
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Patent number: 11970450Abstract: The present invention relates to crystalline compounds comprising vadadustat and L-proline and processes for their preparation. Furthermore, the invention relates to a pharmaceutical composition comprising one or more of the crystalline compounds of the present invention and at least one pharmaceutically acceptable excipient. The pharmaceutical composition of the present invention can be used as a medicament, in particular for the treatment and/or prevention of anemia for example in patients with end-stage renal disease (ESRD) and/or chronic kidney disease (CKD).Type: GrantFiled: November 7, 2019Date of Patent: April 30, 2024Assignee: Sandoz AGInventors: Verena Adamer, Andrea Thaler, Erwin Schreiner
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Patent number: 11512068Abstract: The invention relates to acid addition salts of ridinilazole and processes for the preparation of ridinilazole using these acid addition salts. In addition, the present invention relates to processes for the preparation of ridinilazole in pure form using acid addition salts of ridinilazole as process intermediates.Type: GrantFiled: July 27, 2018Date of Patent: November 29, 2022Assignee: Sandoz AGInventors: Erwin Schreiner, Sven Nerdinger, Gerhard Laus
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Publication number: 20220267334Abstract: The present invention relates to crystalline avapritinib, polymorphs and hydrates thereof as well as to processes for their preparation. Furthermore, the invention relates to a pharmaceutical composition comprising crystalline avapritinib and at least one pharmaceutically acceptable excipient. The pharmaceutical composition of the present invention can be used as a medicament, in particular for the treatment of patients with gastrointestinal stromal tumors (GIST) and advanced systemic mastocytosis (AdvSM), including aggressive systemic mastocytosis (ASM), systemic mastocytosis with an associated hematologic neoplasm (SM-AHN) and mast cell leukemia (MCL).Type: ApplicationFiled: July 2, 2020Publication date: August 25, 2022Applicant: Sandoz AGInventors: Verena Adamer, Andrea Thaler, Erwin Schreiner
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Publication number: 20220024874Abstract: The present invention relates to crystalline compounds comprising vadadustat and L-proline and processes for their preparation. Furthermore, the invention relates to a pharmaceutical composition comprising one or more of the crystalline compounds of the present invention and at least one pharmaceutically acceptable excipient. The pharmaceutical composition of the present invention can be used as a medicament, in particular for the treatment and/or prevention of anemia for example in patients with end-stage renal disease (ESRD) and/or chronic kidney disease (CKD).Type: ApplicationFiled: November 7, 2019Publication date: January 27, 2022Applicant: Sandoz AGInventors: Verena Adamer, Andrea Thaler, Erwin Schreiner
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Patent number: 10954235Abstract: The present invention relates to crystalline valbenazine ditosylate, in particular to a crystalline hydrate of valbenazine ditosylate and a crystalline anhydrate of valbenazine ditosylate, and to methods for their preparation. Furthermore, the invention relates to a pharmaceutical composition comprising the crystalline hydrate or the crystalline anhydrate, preferably in an effective and/or predetermined amount and to the use of said pharmaceutical composition as a medicament, in particular for the treatment of hyperkinetic movement disorders such as tardive dyskinesia.Type: GrantFiled: February 1, 2018Date of Patent: March 23, 2021Assignee: Sandoz AGInventors: Christoph Langes, Ulrich Griesser, Erwin Schreiner, Marijan Stefinovic
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Publication number: 20200290995Abstract: The invention relates to acid addition salts of ridinilazole and processes for the preparation of ridinilazole using these acid addition salts. In addition, the present invention relates to processes for the preparation of ridinilazole in pure form using acid addition salts of ridinilazole as process intermediates.Type: ApplicationFiled: July 27, 2018Publication date: September 17, 2020Applicant: Sandoz AGInventors: Erwin Schreiner, Sven Nerdinger, Gerhard Laus
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Publication number: 20200062750Abstract: The present invention relates to crystalline valbenazine ditosylate, in particular to a crystalline hydrate of valbenazine ditosylate and a crystalline anhydrate of valbenazine ditosylate, and to methods for their preparation. Furthermore, the invention relates to a pharmaceutical composition comprising the crystalline hydrate or the crystalline anhydrate, preferably in an effective and/or predetermined amount and to the use of said pharmaceutical composition as a medicament, in particular for the treatment of hyperkinetic movement disorders such as tardive dyskinesia.Type: ApplicationFiled: February 1, 2018Publication date: February 27, 2020Applicant: Sandoz AGInventors: Christoph Langes, Ulrich Griesser, Erwin Schreiner, Marijan Stefinovic
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Publication number: 20180237378Abstract: The present invention relates to processes, process steps and intermediates useful in the asymmetric bisamidation of malonic ester derivatives wherein the new processes, process steps and intermediates are, for example, useful in the preparation of asymmetric malonic acid bisanilides such as cabozantinib.Type: ApplicationFiled: August 18, 2016Publication date: August 23, 2018Applicant: Sandoz AGInventors: Erwin SCHREINER, Sven NERDINGER, Gerhard LAUS
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Publication number: 20170327504Abstract: The present invention refers to the synthesis and intermediates of substituted bicyclic compounds by using a central 1H-pyrazolo[3,4-d]pyrimidine of formula (I), which is assembled starting from 4,6-dichloropyrimidine carboxylic acid. The invention in particular refers to the synthesis of the Bruton's tyrosine kinase (Btk) inhibitor 1-((R)-3-(4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidin-1-yl)prop-2-en-1-one(ibrutinib) and its synthesis intermediates.Type: ApplicationFiled: October 28, 2015Publication date: November 16, 2017Applicant: Sandoz AGInventors: Christopher Rose, Herbert Silberger, Erwin Schreiner, Wolfgang Felzmann, Nenad Maras
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Publication number: 20170218006Abstract: 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: ApplicationFiled: July 31, 2015Publication date: August 3, 2017Applicant: Sandoz AGInventors: Thorsten Wilhelm, Hans-Peter Spitzenstätter, Olga Schöne, Frank Richter, Erwin Schreiner
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Patent number: 9512097Abstract: The present invention relates to a process for the preparation of 3-aroyl-5-aminobenzofuran derivatives useful as antiarrhythmic drugs which avoids the use of nitro intermediates.Type: GrantFiled: November 11, 2011Date of Patent: December 6, 2016Assignee: Lek Pharmaceuticals D.D.Inventors: Frank Richter, Erwin Schreiner, Samo Pirc, Anton Copar
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Publication number: 20130317100Abstract: The present invention relates to a process for the preparation of 3-aroyl-5-aminobenzofuran derivatives useful as antiarrhythmic drugs which avoids the use of nitro intermediates.Type: ApplicationFiled: November 11, 2011Publication date: November 28, 2013Applicant: LEK PHARMACEUTICALS D.D.Inventors: Frank Richter, Erwin Schreiner, Samo Pirc, Anton Copar
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Publication number: 20060247268Abstract: N-(4,5,6,7-tetrahydro-thiazolo-[5,4-c]pyridin-2-yl)-(C6-18)arylsulfonamides, wherein the nitrogen atom of the pyridine is substituted, and wherein the pyridine ring is optionally bridged, useful as a pharmaceutical related to steroid sulfataseType: ApplicationFiled: November 13, 2003Publication date: November 2, 2006Inventor: Erwin Schreiner
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Publication number: 20050059712Abstract: A compound of formula wherein R1 is haloalkyl, alkenyl, phenyl, thienyl, pyridine, benzthiazolyl, chromanyl (1,2-dihydrobenzopyranyl) or (C6-18)aryl, and R1 or R2 independently of each other are substituted (C4-8)cycloalkyl, a substituted bridged cycloalkyl system, substituted piperidine, substituted tetrahydropyridine, or a substituted bridged heterocyclic system, useful as a pharmaceutical.Type: ApplicationFiled: October 4, 2002Publication date: March 17, 2005Inventors: Amarylla Horvath, Philipp Lehr, Peter Nussbaumer, Erwin Schreiner
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Patent number: 6346626Abstract: The invention concerns the compounds of formula I wherein R1 and R2 independently are hydrogen, acyl, alkoxycarbonyl or alkyl; either the sulfamoyloxy side chain is bound to the 6 position; R3 is alkyl; alkenyl; alkinyl; a cycloalkyl moiety optionally substituted by alkyl, alkoxy or halogen; arylalkenyl; arylalkinyl; acyl; cycloalkylalkyl; 3-oxo-2-oxacamphanyl; or is 6,6-dimethylbicyclo[3.1.1]hept-2-en-2-yl; and R4 is hydrogen; alkyl; hydroxy; or alkoxy; or the sulfamoyloxy side chain is bound to the 7 position; R3 has the significance indicated above for R4; and R4 has the significance indicated above for R3; X is O or S; and the symbol - - - is a single or a double bond; in free form or salt form. They can be prepared by sulfamoylation of corresponding hydroxylated compounds, by reduction and/or by N-substitution. They are indicated for use as pharmaceuticals, particularly in the prophylactic or curative treatment of illnesses responsive to steroid sulfatase inhibition.Type: GrantFiled: October 6, 2000Date of Patent: February 12, 2002Assignee: Novartis AGInventors: Andreas Billich, Peter Nussbaumer, Erwin Schreiner, Ingeborg Schuster