Patents by Inventor Steven R. Schow

Steven R. Schow 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).

  • Publication number: 20240109911
    Abstract: The invention provides synthetic methods for the preparation of cantharidin and analogs thereof. In one aspect, the invention provides an improved Diels-Alder cycloaddition to generate a key intermediate en route to cantharidin and analogs thereof. In certain embodiments, the new Diels-Alder reaction involves reacting Compound (2) in the presence of furan, and in the absence of acid or increased pressure, in an aprotic polar solvent with slight warming, to yield Compound (1) in favorable yield and exo-endo ratio. In another aspect, the invention also provides a new Diels-Alder reaction between compounds of Formula (III) and furan to yield compounds of Formula (IV), which can then be transformed into cantharidin or analogs thereof. In yet another aspect, the invention describes a new palladium-mediated carbonylation providing another key intermediate en route to cantharidin and analogs thereof. In addition to synthetic methods, present invention also provides compounds (i.e.
    Type: Application
    Filed: October 30, 2023
    Publication date: April 4, 2024
    Applicant: Verrica Pharmaceuticals Inc.
    Inventors: Matthew Gene Davidson, Brian Matthew Eklov, Peter Wuts, Brad Melvin Loertscher, Steven R. Schow
  • Patent number: 11834412
    Abstract: A compound having one of the following structures of Formula (IV) or (V): or a stereoisomer, salt, or tautomer thereof, wherein R1, R2, R3, R4, R5 R6, R7, R8, R10, R11a R11b, R12a R12b, X, Y, and Z are as defined herein. Pharmaceutical composition comprising the compounds, and their use in methods of treating diseases are also described.
    Type: Grant
    Filed: March 7, 2023
    Date of Patent: December 5, 2023
    Assignee: Azora Therapeutics, Inc.
    Inventors: Matthew Davidson, Julie Saiki, Robert Lum, Steven R. Schow
  • Publication number: 20230227408
    Abstract: A compound having one of the following structures of Formula (IV) or (V): or a stereoisomer, salt, or tautomer thereof, wherein R1, R2, R3, R4, R5 R6, R7, R8, R10, R11a R11b, R12a R12b, X, Y, and Z are as defined herein. Pharmaceutical composition comprising the compounds, and their use in methods of treating diseases are also described.
    Type: Application
    Filed: March 7, 2023
    Publication date: July 20, 2023
    Inventors: Matthew DAVIDSON, Julie SAIKI, Robert LUM, Steven R. SCHOW
  • Patent number: 11702394
    Abstract: Inhibitors of Glycerol 3-Phosphate Acyltransferase (GPAT) are provided; and methods of use in the treatment of cancer; and treatment of conditions relating to metabolic syndrome and hyperlipidemia.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: July 18, 2023
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Arvin Gouw, Dean W. Felsher, Feng Jin, Richard N. Zare, Katherine Margulis, Steven R. Schow, Robert J. Greenhouse, David Loughhead, Steven Richards
  • Publication number: 20220315528
    Abstract: Inhibitors of Glycerol 3-Phosphate Acyltransferase (GPAT) are provided; and methods of use in the treatment of cancer; and treatment of conditions relating to metabolic syndrome, hyperlipidemia, infection and inflammation.
    Type: Application
    Filed: August 20, 2020
    Publication date: October 6, 2022
    Inventors: Arvin Gouw, Steven R. Schow, Robert J. Greenhouse, Toni Kline, Dean W. Felsher
  • Patent number: 11168091
    Abstract: The present disclosure provides methods for purifying a solution comprising cantharidin and cantharidin-associated impurities. A method to purify the solution can comprise recrystallization or sublimation, for example. The purified cantharidin can be analyzed using a detection method comprising a stationary phase and one or more mobile phases.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: November 9, 2021
    Assignee: Verrica Pharmaceuticals Inc.
    Inventors: Matthew Davidson, Garry Southan, Steven R. Schow, Robert Moore
  • Publication number: 20210070771
    Abstract: The present disclosure provides methods for synthesizing cantharidin and cantharidin derivatives.
    Type: Application
    Filed: August 17, 2020
    Publication date: March 11, 2021
    Applicant: Verrica Pharmaceuticals, Inc.
    Inventors: Matthew Gene Davidson, Steven R. Schow
  • Publication number: 20210002240
    Abstract: Inhibitors of Glycerol 3-Phosphate Acyltransferase (GPAT) are provided; and methods of use in the treatment of cancer; and treatment of conditions relating to metabolic syndrome and hyperlipidemia.
    Type: Application
    Filed: February 22, 2019
    Publication date: January 7, 2021
    Inventors: Arvin Gouw, Dean W. Felsher, Feng Jin, Richard N. Zare, Katherine Margulis, Steven R. Schow, Robert J. Greenhouse, David Loughhead, Steven Richards
  • Publication number: 20200270269
    Abstract: The invention provides synthetic methods for the preparation of cantharidin and analogs thereof. In one aspect, the invention provides an improved Diels-Alder cycloaddition to generate a key intermediate en route to cantharidin and analogs thereof. In yet another aspect, the invention describes a new palladium-mediated carbonylation providing another key intermediate en route to cantharidin and analogs thereof. In addition to synthetic methods, present invention also provides compounds (i.e., intermediates) useful in the synthesis of cantharidin and analogs thereof. Compounds provided herein may have biological activity, and therefore may be used in the treatment of diseases or conditions (e.g., infectious diseases and skin conditions).
    Type: Application
    Filed: October 4, 2018
    Publication date: August 27, 2020
    Applicant: Verrica Pharmaceuticals, Inc.
    Inventors: Matthew Gene Davidson, Brian Matthew Eklov, Peter Wuts, Brad Melvin Loertscher, Steven R. Schow
  • Patent number: 10745413
    Abstract: The present disclosure provides methods for synthesizing cantharidin and cantharidin derivatives.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 18, 2020
    Assignee: Verrica Pharmaceuticals, Inc.
    Inventors: Matthew Davidson, Steven R. Schow
  • Publication number: 20190031674
    Abstract: The present disclosure provides methods for purifying a solution comprising cantharidin and cantharidin-associated impurities. A method to purify the solution can comprise recrystallization or sublimation, for example. The purified cantharidin can be analyzed using a detection method comprising a stationary phase and one or more mobile phases.
    Type: Application
    Filed: January 20, 2016
    Publication date: January 31, 2019
    Applicant: Verrica Pharmaceuticals, Inc.
    Inventors: Matthew Davidson, Garry Southan, Steven R. Schow, Robert Moore
  • Publication number: 20190002474
    Abstract: The present disclosure provides methods for synthesizing cantharidin and cantharidin derivatives.
    Type: Application
    Filed: December 17, 2015
    Publication date: January 3, 2019
    Inventors: Matthew Davidson, Steven R. Schow
  • Publication number: 20140315812
    Abstract: Provided herein is an amorphous form of a pharmaceutically acceptable salt of ezatiostat, for example, ezatiostat hydrochloride, compositions, uses and methods of preparation thereof.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 23, 2014
    Inventor: Steven R. Schow
  • Patent number: 8361971
    Abstract: Disclosed herein are tablets comprising ezatiostat hydrochloride wherein the ezatiostat hydrochloride comprises from about 75 to about 82 percent by weight of the tablet.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: January 29, 2013
    Assignee: Telik, Inc.
    Inventors: Robert T. Lum, Stephan D. Parent, Chunsheng Qiao, Steven R. Schow
  • Patent number: 8334266
    Abstract: A process for and intermediates in the preparation of canfosfamide and its salts. Some of the intermediates have anticancer activity.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: December 18, 2012
    Assignee: Telik, Inc.
    Inventors: William A. Boulanger, Steven J. Collier, Stephen A. Eastham, Dennis L. Edie, Ronan Y. Guevel, Pedro E. Hernandez Abad, R. Jason Herr, Hans J. Kjaersgaard, Harold Meckler, Robert E. Polomski, Steven R. Schow, Pavel E. Zhichkin
  • Publication number: 20120238772
    Abstract: A process for and intermediates in the preparation of canfosfamide and its salts. Some of the intermediates have anticancer activity.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 20, 2012
    Inventors: William A. Boulanger, Steven J. Collier, Stephen A. Eastham, Dennis L. Edie, Ronan Y. Guevel, Pedro E. Hernández Abad, R. Jason Herr, Hans J. Kjaersgaard, Harold Meckler, Robert E. Polomski, Steven R. Schow, Pavel E. Zhichkin
  • Patent number: 8198247
    Abstract: A process for and intermediates in the preparation of canfosfamide and its salts. Some of the intermediates have anticancer activity.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: June 12, 2012
    Assignee: Telik, Inc.
    Inventors: William A. Boulanger, Dennis L. Edie, Ronan Y. Guevel, Pedro E. Hernandez Abad, R. Jason Herr, Harold Meckler, Steven R. Schow, Pavel E. Zhichkin
  • Publication number: 20120021054
    Abstract: Disclosed herein are tablets comprising ezatiostat hydrochloride wherein the ezatiostat hydrochloride comprises from about 75 to about 82 percent by weight of the tablet.
    Type: Application
    Filed: September 27, 2011
    Publication date: January 26, 2012
    Inventors: Robert T. Lum, Stephan D. Parent, Chunsheng Qiao, Steven R. Schow
  • Patent number: 8093231
    Abstract: Sulfonylethyl and thioethyl phosphorodiamidates, their preparation and intermediates in their preparation, formulations containing them, and their pharmaceutical use. The compounds are useful for treating cancer, alone and in combination with other anticancer therapies.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: January 10, 2012
    Assignee: Telik, Inc.
    Inventors: David R. Allen, Wenli Ma, Brian T. Peterson, Louise Robinson, Steven R. Schow, Songyuan Shi, Reyna J. Simon, Kevin T. Weber, Michael M. Wick
  • Publication number: 20110300215
    Abstract: Disclosed herein are tablets comprising ezatiostat hydrochloride wherein the ezatiostat hydrochloride comprises from about 75 to about 82 percent by weight of the tablet.
    Type: Application
    Filed: March 29, 2011
    Publication date: December 8, 2011
    Inventors: Robert T. Lum, Stephan D. Parent, Chunsheng Qiao, Steven R. Schow