Patents by Inventor Benjamin Skead

Benjamin Skead 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: 20260167644
    Abstract: In one aspect, the invention relates to a process for preparing a compound of formula (XII), wherein PG is a protecting group, or a compound of formula (XI), comprising the steps of: (i) treating a compound of formula XIII, wherein PG is a protecting group, with N-methylpiperazine to form a compound of formula XII, wherein said compound of formula XII is in the form of a mixture of cis and trans isomers; (ii) combining the mixture formed in step (i) with an organic solvent and heating the solvent mixture so formed; (iii) isolating the trans-isomer of the compound of formula XII from the solvent mixture formed in step (ii); and (iv) optionally treating said trans-isomer of the compound of formula XII with an acid to form a compound of formula XI; and isolating said compound of formula XI. Further aspects of the invention relate to processes for preparing pyrimido-diazepinone derivatives using the above process and intermediates.
    Type: Application
    Filed: February 6, 2026
    Publication date: June 18, 2026
    Applicant: Cyclacel Pharmaceuticals, Inc.
    Inventors: Benjamin SKEAD, Derek LONDESBROUGH, Michal CZYZEWSKI, Chris ATHERTON, Chris GILL, Alex HUDSON
  • Publication number: 20260146043
    Abstract: The present invention relates to new crystalline forms of a pyrimido-diazepine derivative which exhibits excellent anti-tumour activity. The invention also relates to a pharmaceutical composition containing said crystalline forms as an active ingredient, and use thereof in the prevention or treatment of disease. The invention further relates to a process for preparing the crystalline forms.
    Type: Application
    Filed: November 14, 2025
    Publication date: May 28, 2026
    Applicant: Cyclacel Pharmaceuticals Inc.
    Inventors: Benjamin Skead, Julian Northen, Chris Atherton, John Mykytiuk
  • Patent number: 12570660
    Abstract: In one aspect, the invention relates to a process for preparing a compound of formula (XII), wherein PG is a protecting group, or a compound of formula (XI), comprising the steps of: (i) treating a compound of formula XIII, wherein PG is a protecting group, with N-methylpiperazine to form a compound of formula XII, wherein said compound of formula XII is in the form of a mixture of cis and trans isomers; (ii) combining the mixture formed in step (i) with an organic solvent and heating the solvent mixture so formed; (iii) isolating the trans-isomer of the compound of formula XII from the solvent mixture formed in step (ii); and (iv) optionally treating said trans-isomer of the compound of formula XII with an acid to form a compound of formula XI; and isolating said compound of formula XI. Further aspects of the invention relate to processes for preparing pyrimido-diazepinone derivatives using the above process and intermediates.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: March 10, 2026
    Assignee: CYCLACEL PHARMACEUTICALS, INC
    Inventors: Benjamin Skead, Derek Londesbrough, Michal Czyzewski, Chris Atherton, Chris Gill, Alex Hudson
  • Patent number: 12534466
    Abstract: The present invention relates to new crystalline forms of a pyrimido-diazepine derivative which exhibits excellent anti-tumour activity. The invention also relates to a pharmaceutical composition containing said crystalline forms as an active ingredient, and use thereof in the prevention or treatment of disease. The invention further relates to a process for preparing the crystalline forms.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: January 27, 2026
    Assignee: Cyclacel Pharmaceuticals Inc.
    Inventors: Benjamin Skead, Julian Northen, Chris Atherton, John Mykytiuk
  • Publication number: 20230104823
    Abstract: The present invention relates to a process for preparing a compound of formula [I], or a pharmaceutically acceptable salt thereof, said process comprising the steps of: (i) forming a reaction mixture comprising a compound of formula [II] and a compound of formula [III]; (ii) heating said reaction mixture to a temperature of at least about 130° C.
    Type: Application
    Filed: January 21, 2021
    Publication date: April 6, 2023
    Inventors: Benjamin SKEAD, Derek LONDESBROUGH, Chris GILL, ALEX HUDSON
  • Publication number: 20220289755
    Abstract: In one aspect, the invention relates to a process for preparing a compound of formula (XII), wherein PG is a protecting group, or a compound of formula (XI), comprising the steps of: (i) treating a compound of formula XIII, wherein PG is a protecting group, with N-methylpiperazine to form a compound of formula XII, wherein said compound of formula XII is in the form of a mixture of cis and trans isomers; (ii) combining the mixture formed in step (i) with an organic solvent and heating the solvent mixture so formed; (iii) isolating the trans-isomer of the compound of formula XII from the solvent mixture formed in step (ii); and (iv) optionally treating said trans-isomer of the compound of formula XII with an acid to form a compound of formula XI; and isolating said compound of formula XI. Further aspects of the invention relate to processes for preparing pyrimido-diazepinone derivatives using the above process and intermediates.
    Type: Application
    Filed: August 14, 2020
    Publication date: September 15, 2022
    Inventors: Benjamin SKEAD, Derek LONDESBROUGH, Michal CZYZEWSKI, Chris ATHERTON, Chris GILL, Alex HUDSON
  • Publication number: 20220281880
    Abstract: The present invention relates to new crystalline forms of a pyrimido-diazepine derivative which exhibits excellent anti-tumour activity. The invention also relates to a pharmaceutical composition containing said crystalline forms as an active ingredient, and use thereof in the prevention or treatment of disease. The invention further relates to a process for preparing the crystalline forms.
    Type: Application
    Filed: August 14, 2020
    Publication date: September 8, 2022
    Inventors: Benjamin SKEAD, Julian NORTHEN, Chris ATHERTON, John MYKYTIUK
  • Publication number: 20060074106
    Abstract: A method of treating an inflammatory disease or an autoimmune disease in a subject, comprises the administration of mefloquine.
    Type: Application
    Filed: November 30, 2005
    Publication date: April 6, 2006
    Inventors: Benjamin Skead, Robin Bannister, Alan Rothaul