Patents Assigned to Cyclacel Limited
  • Publication number: 20090306098
    Abstract: A first aspect of the invention relates to a combination comprising roscovitine, or a pharmaceutically acceptable salt thereof, and a HDAC inhibitor selected from sodium butyrate, or a prodrug thereof, suberoylanilide hydroxamic acid (SAHA), sodium valproate and trichostatin A (TSA). A second aspect of the invention relates to a pharmaceutical product comprising roscovitine, or a pharmaceutically acceptable salt thereof, and a HDAC inhibitor selected from sodium butyrate, or a prodrug thereof, suberoylanilide hydroxamic acid (SAHA), sodium valproate and trichostatin A (TSA) as a combined preparation for simultaneous, sequential or separate use in therapy.
    Type: Application
    Filed: November 13, 2006
    Publication date: December 10, 2009
    Applicant: Cyclacel Limited
    Inventors: Simon Green, Sheelagh Frame, Ian Fleming
  • Publication number: 20090274773
    Abstract: A first aspect of the invention relates to a combination comprising 2?-cyano-2?-deoxy-N4-palmitoyl-1-beta-D-arabi-nofuranosyl-cytosine, or a metabolite thereof, or a pharmaceutically acceptable salt thereof, and a cytotoxic agent selected from (a) a vinca alkaloid; (b) a taxane; (c) a cytosine analogue; (d) an anthracycline; and (e) a platinum antineoplastic agent. A second aspect of the invention relates to a pharmaceutical product comprising the above combination as a combined preparation for simultaneous, sequential or separate use in therapy. A third aspect of the invention relates to a method for treating a proliferative disorder, said method comprising simultaneously, sequentially or separately administering the above combination.
    Type: Application
    Filed: November 13, 2006
    Publication date: November 5, 2009
    Applicant: Cyclacel Limited
    Inventors: Simon Green, Ian Fleming, Eric Raymond
  • Patent number: 7612079
    Abstract: The present invention relates to compounds of formula I or a pharmaceutically acceptable salt thereof wherein R2 is 2-hydroxymethylpyrrolidin-1-yl, or NHCH(R4)CH(R3)OH, wherein R3 is hydrogen or methyl and R4 is methyl, ethyl or isopropyl; R6 is 3-nitrophenylamino, 3,4-dimethoxybenzylamino, 3-iodobenzyl-amino, pyrid-2-yl-methylamino, pyrid-4-yl-methylamino or indan-5-amino; R9 is isopropyl or cyclopentanyl. In a further aspect, the invention relates to pharmaceutical compositions comprising said compounds, and the use thereof in treating antiproliferative disorders and or viral disorders.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: November 3, 2009
    Assignees: Cyclacel Limited, Cancer Research Technology Limited
    Inventors: Peter Martin Fischer, Mike Jarman, Ted McDonald, Bernard Nutley, Florence Raynaud, Stuart Wilson, Paul Workman
  • Publication number: 20090270427
    Abstract: The present invention relates to compounds of formula 1 or pharmaceutically acceptable salts thereof, wherein one of R1 and R2 is methyl, ethyl or isopropyl, and the other is H; R3 and R4 are each independently H, branched or unbranched C1-C6 alkyl, or aryl, and wherein at least one of R3 and R4 is other than H; R5 is a branched or unbranched C1-C5 alkyl group or a C1-C6 cycloalkyl group, each of which may be optionally substituted with one or more OH groups; R6, R7, R8 and R9 are each independently H, halogen, NO2, OH, OMe, CN, NH2, COOH, CONH2, or SO2NH2. A further aspect of the invention relates to pharmaceutical compositions comprising compounds of formula 1, and the use of said compounds in treating proliferative disorders, viral disorders, CNS disorders, diabetes, stroke, alopecia or neurodegenerative disorders.
    Type: Application
    Filed: April 30, 2009
    Publication date: October 29, 2009
    Applicants: Cyclacel Limited, Cancer Research Technology Limited
    Inventors: Peter Martin FISHER, Michael JARMAN, Edward MCDONALD, Bernard NUTLEY, Florence RAYNAUD, Stuart WILSON, Paul WORKMAN
  • Patent number: 7582642
    Abstract: The present invention relates to compounds of formula 1 or pharmaceutically acceptable salts thereof, wherein one of R1 and R2 is methyl, ethyl or isopropyl, and the other is H; R3 and R4 are each independently H, branched or unbranched C1-C6 alkyl, or aryl, and wherein at least one of R3 and R4 is other than H; R5 is a branched or unbranched C1-C5 alkyl group or a C1-C6 cycloalkyl group, each of which may be optionally substituted with one or more OH groups; R6, R7, R8 and R9 are each independently H, halogen, NO2, OH, OMe, CN, NH2, COOH, CONH2, or SO2NH2. A further aspect of the invention relates to pharmaceutical compositions comprising compounds of formula 1, and the use of said compounds in treating proliferative disorders, viral disorders, stroke, alopecia, CNS disorders, neurodegenerative disorders, or diabetes.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: September 1, 2009
    Assignees: Cyclacel Limited, Cancer Research Technology Limited
    Inventors: Peter Martin Fischer, Michael Jarman, Edward McDonald, Bernard Nutley, Florence Raynaud, Stuart Wilson, Paul Workman
  • Publication number: 20090215805
    Abstract: The present invention relates to compounds of formula (I) or formula (II), or pharmaceutically acceptable salts thereof. Further aspects relate to pharmaceutical compositions comprising compounds according to the invention, and the use of said compounds in the preparation of a medicament for treating a variety of disorders, including proliferative disorders, viral disorders, stroke, etc.
    Type: Application
    Filed: October 9, 2006
    Publication date: August 27, 2009
    Applicant: Cyclacel Limited
    Inventors: Gavin Wood, Christopher Meades, Peter Martin Fischer, Shudong Wang, Kenneth Duncan, Daniella I. Zheleva, Campbell Mcinnes, Mark Thomas
  • Patent number: 7576091
    Abstract: A compound of formula 1, or a pharmaceutically acceptable salt thereof, wherein: X is S, O, or NH; “a” is a single bond; or “a” is a double bond and one of R3 and R4, and one of R5 and R6 are absent; R1 is H; or is selected from an alkyl group, a cycloalkyl group, a heteroaryl group, an aralkyl group, CO-alkyl, SO2-alkyl, CO2R13 and an aryl group, each of which optionally contains one or more heteroatoms, and is optionally substituted with one or more groups selected from R8 and R9; R2 is H, R8, or an alkyl group optionally substituted with one or more R8 groups; R3, R4, R5, and R6 are each independently selected from H, R8, an alkyl group and an alkenyl group, wherein said alkyl and alkenyl groups are optionally substituted with one or more R8 groups; or R3 and R4, and/or R5 and R6 together represent ?O; R7 is H, R8, NH(CH2)nR9, CO(CH2)nR9, NHCO(CH2)nR9, O(CH2)nR9, or an alkyl or phenyl group, each of which is optionally substituted with one or more groups selected from R8 and R9; R8 is OR10, NR10R11, ha
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: August 18, 2009
    Assignee: Cyclacel Limited
    Inventors: Campbell McInnes, Mark Peter Thomas, Shudong Wang, Neil McIntyre, Nicholas Westwood, Peter Martin Fischer
  • Patent number: 7544689
    Abstract: The present invention relates to compounds of formula I or pharmaceutically acceptable salts thereof, wherein one of R1 and R2 is methyl, ethyl or isopropyl, and the other is H; R3 and R4 are each independently H, branched or un branched C1-C6 alkyl, or aryl, and wherein at least one of R3 and R4 is other than H; R5 is a branched or unbranched C1-C5 alkyl group or a C1-C6 cycloalkyl group, each of which may be optionally substituted with one or more OH groups; R6, R7, R8 and R9 are each independently H, halogen, NO2, OH, OMe, CN, NH2, COOH, CONH2, or SO2NH2. A further aspect of the invention relates to pharmaceutical compositions comprising compounds of formula 1, and the use of said compounds in treating proliferative disorders, viral disorders, CNS disorders, diabetes, stroke, alopecia or neurodegenerative disorders.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: June 9, 2009
    Assignees: Cyclacel Limited, Cancer Research Technology Limited
    Inventors: Peter Martin Fischer, Michael Jarman, Edward McDonald, Bernard Nutley, Florence Raynaud, Stuart Wilson, Paul Workman
  • Publication number: 20090118315
    Abstract: A first aspect of the invention relates to a method of treating leukaemia or myelodysplastic syndromes (MDS), said method comprising administering a therapeutically effective amount of sapacitabine, or a metabolite thereof, to a subject in accordance with a dosing regimen comprising at least one treatment cycle, wherein said treatment cycle comprises administering a therapeutically effective amount of sapacitabine, or a metabolite thereof, for 7 consecutive days every 21 days or 14 consecutive days every 21 days.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 7, 2009
    Applicant: Cyclacel Limited
    Inventors: Athos Gianella-Borradori, Judy Chiao
  • Publication number: 20090074856
    Abstract: The present invention relates to a pharmaceutical formulation which comprises (i) a capsule, and (ii) a core comprising crystalline 2?-cyano-2?-deoxy-N4-palmitoyl-1-?-D-arabinofuranosylcytosine and a liquid carrier.
    Type: Application
    Filed: December 22, 2006
    Publication date: March 19, 2009
    Applicant: Cyclacel Limited
    Inventors: Robert Westwood, Alastair Selkirk
  • Publication number: 20080318954
    Abstract: The present invention relates to compounds of formula (I), or a pharmaceutically acceptable salts thereof, wherein: Z1: 1 is N or CH; Z2 and Z3 are each independently N or CR7; R1, R2, R3, R4, R5, R6, and R7 are each independently H, R8, or R9; each R8 is independently a hydrocarbyl group; and each R9 is independently halo, NO2, alkoxy, CN, CF3, S03H, SO2NR10R11, S02R12, NR13R14(CH2)aCOOR15, (CH2)bCONR16R17, (CH2)cCOR18 or (CH2)dOH; a, b, c and d are each independently 0, 1 2 3 or 4; R10-18 are each independently H or alkyl; provided that when R1 and R2 are both H, Z1 is CH; or Z2 is N; or Z1 is CH and Z2 is N; and wherein the compound is other than 4-(4,5-dimethylthiazol-2-yl)-N-(3,4,5trimethoxyphenyl)-2-pyrimidineamine or 4-(5-(2-hydroxyethyl)-4-methylthiazol-2-yl)N-(3,4,5-trimethoxyphenyl)-2-pyrimidineamine.
    Type: Application
    Filed: February 7, 2005
    Publication date: December 25, 2008
    Applicant: Cyclacel Limited
    Inventors: Kenneth Duncan, Darren Gibson, Shudong Wang, Daniella I. Zheleva, Peter Martin Fischer
  • Publication number: 20080287439
    Abstract: The present invention relates to substituted pyrimidines of formula I, their preparation, pharmaceutical compositions containing them and their use as inhibitors of cyclin-dependent kinases (CDKs) and hence their use in the treatment of proliferative disorders and/or viral disorders.
    Type: Application
    Filed: July 29, 2008
    Publication date: November 20, 2008
    Applicant: Cyclacel Limited
    Inventors: Shudong Wang, Christopher Meades, Gavin Wood, Janice O'Boyle, Campbell McInnes, Peter Martin Fischer
  • Patent number: 7449544
    Abstract: The present invention relates to p21 derived peptides capable of inhibiting CDK/cyclin complexes, particularly cyclins A or E/CDK2, by modifying the interaction with their substrates. The peptides are derived from a C-terminal region of p21 and display selectivity for cyclin/CDK2 inhibition over cyclin/CDK4 inhibition. Variants of such peptides particularly involving certain alanine replacements are shown to be particularly potent.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: November 11, 2008
    Assignee: Cyclacel Limited
    Inventors: Daniella I. Zheleva, Peter Martin Fischer, Campbell McInnes, Martin J. I. Andrews, Weng C. Chan, Gail E. Atkinson
  • Publication number: 20080249025
    Abstract: p21WAF1 interacts with cyclin D1 and Cdk4. Peptide fragments of p21 inhibit the interaction and/or affect Cdk4 activity. The peptides, derivative peptides and non-peptidyl mimetics thereof are useful in affecting activity of Cdk4, such as RB phosphorylation and cellular proliferation, indicative of therapeutic usefullness in treatment of tumors and other hyperproliferative disorders. Assay and screening methods allow identification of such modulators, especially inhibitors, of Cdk4 activity.
    Type: Application
    Filed: June 4, 2008
    Publication date: October 9, 2008
    Applicant: Cyclacel Limited
    Inventors: Kathryn Lindsay Ball, David PHilip Lane
  • Patent number: 7427627
    Abstract: The present invention relates to 2-substituted 4-heteroaryl-pyrimidines, their preparation, pharmaceutical compositions containing them and their use as inhibitors of cyclin-dependent kinases (CDKs) and hence their use in the treatment of proliferative disorders such as cancer, leukaemia, psoriasis and the like.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: September 23, 2008
    Assignee: Cyclacel Limited
    Inventors: Shudong Wang, Christopher Meades, Andrew Osnowski, Gavin Wood, Peter Martin Fischer
  • Patent number: 7388015
    Abstract: The present invention relates to 2-substituted 4-heteroaryl-pyrimidines, their preparation, pharmaceutical compositions containing them and their use as inhibitors of cyclin-dependent kinases (CDKs) and hence their use in the treatment of proliferative disorders such as cancer, leukaemia, psoriasis and the like.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: June 17, 2008
    Assignee: Cyclacel Limited
    Inventors: Shudong Wang, Christopher Meades, Andrew Osnowski, Gavin Wood, Peter Martin Fischer
  • Publication number: 20080132484
    Abstract: The present invention relates to a homology model for PLK, and the use thereof in assays for the identification of small molecule PLK modulators. The invention further relates to PLK modulators identified by said assays, and their use in the treatment of PLK-related disorders such as proliferative disorders.
    Type: Application
    Filed: November 12, 2004
    Publication date: June 5, 2008
    Applicant: CYCLACEL LIMITED
    Inventors: Campbell McInnes, Janice McLachlan, Mokdad Mezna, Peter Martin Fischer
  • Publication number: 20080125404
    Abstract: The present invention relates to the use of an inhibitor of CDK2 and/or CDK7 and/or CDK9, or a pharmaceutically acceptable salt thereof, in the preparation of a medicament for treating a disease associated with antinuclear antibodies, wherein the inhibitor of CDK2 and/or CDK7 and/or CDK9 or pharmaceutically acceptable salt thereof is administered in an amount sufficient to down-regulate the levels of antinuclear antibodies. A further aspect of the invention relates to a combination comprising an inhibitor of CDK2 and/or CDK7 and/or CDK9, or a pharmaceutically acceptable salt thereof, and methylprednisolone, and its use in the treatment of diseases associated with antinuclear antibodies, such as SLE.
    Type: Application
    Filed: August 25, 2005
    Publication date: May 29, 2008
    Applicant: Cyclacel Limited
    Inventors: Ariela Benigni, Carla Zoja, Giuseppe Remuzzi, Athos Gianella-Borradori
  • Patent number: 7312356
    Abstract: The present invention relates to 3?,28-diacetoxy-18-oxo-19,20,21,29,30-pentanorlupan-22-oic acid methanol solvate, its use in medicine and processes for its preparation.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: December 25, 2007
    Assignee: Cyclacel Limited
    Inventors: Peter Martin Fischer, Jan Sarek, Paul M. Blaney, Piers Collier, John R. Ferguson, Jonathan D. Hull
  • Patent number: 7262202
    Abstract: The present invention relates to 2-substituted 4-heteroaryl-pyrimidines, their preparation, pharmaceutical compositions containing them and their use as inhibitors of cyclin-dependent kinases (CDKs) and hence their use in the treatment of proliferative disorders such as cancer, leukaemia, psoriasis and the like.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: August 28, 2007
    Assignee: Cyclacel Limited
    Inventors: Peter Martin Fischer, Shudong Wang, Gavin Wood