Patents by Inventor Steven Weissman

Steven Weissman 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: 11014870
    Abstract: Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: May 25, 2021
    Assignee: Horizon Therapeutics, LLC
    Inventors: Huai-Chueh Chang, Steven S. Pfeiffer, Vasilios H. Iskos, Maki Uragami, Steven Weissman, Andrew Thompson
  • Publication number: 20200002266
    Abstract: Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.
    Type: Application
    Filed: May 7, 2019
    Publication date: January 2, 2020
    Inventors: Huai-Chueh CHANG, Steven S. PFEIFFER, Vasilios H. ISKOS, Maki URAGAMI, Steven WEISSMAN, Andrew THOMPSON
  • Patent number: 10329236
    Abstract: Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: June 25, 2019
    Assignee: Horizon Therapeutics, LLC
    Inventors: Huai-Chueh Chang, Steven S. Pfeiffer, Vasilios H. Iskos, Maki Uragami, Steven Weissman, Andrew Thompson
  • Patent number: 9914692
    Abstract: Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: March 13, 2018
    Assignee: Horizon Therapeutics, LLC
    Inventors: Huai-Chueh Chang, Steven S. Pfeiffer, Vasilios H. Iskos, Maki Uragami, Steven Weissman, Andrew Thompson
  • Publication number: 20170362160
    Abstract: Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.
    Type: Application
    Filed: September 6, 2017
    Publication date: December 21, 2017
    Inventors: Huai-Chueh CHANG, Steven S. PFEIFFER, Vasilios H. ISKOS, Maki URAGAMI, Steven WEISSMAN, Andrew THOMPSON
  • Publication number: 20170342018
    Abstract: Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.
    Type: Application
    Filed: May 25, 2016
    Publication date: November 30, 2017
    Inventors: Huai-Chueh Chang, Steven S. Pfeiffer, Vasilios H. Iskos, Maki Uragami, Steven Weissman, Andrew Thompson
  • Patent number: 8686141
    Abstract: Processes for preparing certain N-arylalkyl-1-(alkyl or aralkyl)-2-acylaminoalkyl-5-hydroxy-6-oxo-1,6-dihydropyrimidine-4-carboxamides are disclosed. In one embodiment, the process comprises acylating the free amine in the corresponding N-arylalkyl-1-(alkyl or aralkyl)-2-aminoalkyl-5-ester protected hydroxy-6-oxo-1,6-dihydropyrimidine-4-carboxamide and then deprotecting the 5-hydroxy by base hydrolysis. The hydroxypyrimidinone carboxamide products of the process are HTV integrase inhibitors which are useful for treating HTV infection, treating AIDS, or delaying the onset or progression of AIDS. Certain esterified N-arylalkyl hydroxypyrimidinone carboxamides that can be employed as process intermediates are also disclosed.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: April 1, 2014
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Guy R. Humphrey, Ross A. Miller, Peter E. Maligres, Steven Weissman
  • Publication number: 20100280244
    Abstract: Processes for preparing certain N-arylalkyl-1-(alkyl or aralkyl)-2-acylaminoalkyl-5-hydroxy-6-oxo-1,6-dihydropyrimidine-4-carboxamides are disclosed. In one embodiment, the process comprises acylating the free amine in the corresponding N-arylalkyl-1-(alkyl or aralkyl)-2-aminoalkyl-5-ester protected hydroxy-6-oxo-1,6-dihydropyrimidine-4-carboxamide and then deprotecting the 5-hydroxy by base hydrolysis. The hydroxypyrimidinone carboxamide products of the process are HTV integrase inhibitors which are useful for treating HTV infection, treating AIDS, or delaying the onset or progression of AIDS. Certain esterified N-arylalkyl hydroxypyrimidinone carboxamides that can be employed as process intermediates are also disclosed.
    Type: Application
    Filed: December 22, 2008
    Publication date: November 4, 2010
    Inventors: Guy R. Humphrey, Ross A. Miller, Peter E. Maligres, Steven Weissman
  • Publication number: 20060241299
    Abstract: This invention relates to a process for making spirolactone compounds of general formula I, having an improved IA/IB ratio, according to the following shceme.
    Type: Application
    Filed: May 14, 2004
    Publication date: October 26, 2006
    Inventors: Ralph Volante, Steven Weissman, Takehiko Iida, Yuhei Yamamoto, Hiroki Sato, Kenji Maeda, Naotaka Sawada, Toshiaki Mase
  • Publication number: 20060106223
    Abstract: A practical, ligand-free cyanation of aryl bromides employs Pd catalyst in combination with a non-toxic cyanide source, Mn[Fe(CN)6] (M=K or Na; n is 3 or 4), or a hydrate thereof, and a base. The reactions are performed in a polar aprotic solvents and provide the corresponding aryl nitrile in 83-96% yield, typically in less than 5 h.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 18, 2006
    Inventor: Steven Weissman
  • Publication number: 20060014950
    Abstract: This invention relates to a process for making spirolactone compounds analogous to formula I.
    Type: Application
    Filed: October 14, 2003
    Publication date: January 19, 2006
    Inventors: Ralph Volante, David Tschaen, Steven Weissman, Mathew Heileman, Toshiaki Mase, Takehiko Iida, Kenji Maeda, Toshihiro Wada, Hiroki Sato, Kenichi Asakawa
  • Publication number: 20040116688
    Abstract: The present invention relates to a novel process to make indolocarbazole glycosides in high purity which inhibit the growth of tumor cells and are therefore useful in the treatment of cancer in mammals, and the like.
    Type: Application
    Filed: September 25, 2003
    Publication date: June 17, 2004
    Inventors: Steven Weissman, David Tschaen, Asayuki Kamatani, Shouichi Hiraga, Masashi Kawasaki, Takehiko Iida
  • Patent number: 6559299
    Abstract: The present invention relates to a novel process to make indolocarbazole glycosides in high purity which inhibit the growth of tumor cells and are therefore useful in the treatment of cancer in mammals, and the like.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: May 6, 2003
    Assignees: Merck & Co., Inc., Banyu Pharmaceutical Co., Ltd.
    Inventors: Steven Weissman, David Tschaen, Asayuki Kamatani, Shouichi Hiraga, Masashi Kawasaki, Takehiko Iida
  • Publication number: 20020193324
    Abstract: The present invention relates to a novel process to make indolocarbazole glycosides in high purity which inhibit the growth of tumor cells and are therefore useful in the treatment of cancer in mammals, and the like.
    Type: Application
    Filed: March 21, 2002
    Publication date: December 19, 2002
    Inventors: Steven Weissman, David Tschaen, Asayuki Kamatani, Shouichi Hiraga, Masashi Kawasaki, Takehiko Iida