Patents Assigned to Cyclacel Limited
  • Patent number: 8497291
    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: Grant
    Filed: December 22, 2006
    Date of Patent: July 30, 2013
    Assignee: Cyclacel Limited
    Inventors: Robert Westwood, Alistair Selkirk
  • Patent number: 8404692
    Abstract: The present invention relates to compounds of formula (I), or pharmaceutically acceptable salts thereof, wherein Z is NR11, NHCO, NHSO2, NHCH2, CH2, CH2CH2, or CH?CH; X is a hydrocarbyl group optionally substituted by one or more R12 groups; R10 and R11 are each independently II or alkyl; R1-R4 are each independently II or (CII2)mR12, where m is O, 1, 2, or 3; each R12 is independently (CH2)aR16, where each R16 is independently selected from O(CH2)bR13, R13, COR13, COOR13, CN, CONR13R14, NR13R14, NR13COR14, SR13, SOR13, SO2R13, NR13SO2R14, SO2OR13, SO2NR13R14, halogen, CF3, and NO2, and wherein each a is 0, 1, 2, or 3 and b is 0, 1, 2, or 3; R13 and R14 are each independently H or (CH2)aR15, where n is 0, 1, 2, or 3; and each R15 is independently selected from alkyl, cycloalkyl, heteroaryl, aralkyl, aryl and heterocycloalkyl, each of which may be optionally substituted by one or more substituents selected from halogen, OH, CN, COO-alkyl, aralkyl, SO2-alkyl, SO2-aryl, COOH, CO-alkyl, CO-aryl, NH2, NH-alkyl, N(
    Type: Grant
    Filed: October 9, 2006
    Date of Patent: March 26, 2013
    Assignee: Cyclacel Limited
    Inventors: Stuart Jones, Robert Westwood, Mark Thomas, Janice McLachlan, Kenneth Duncan, Fred Scaerou, Daniella I. Zheleva
  • Publication number: 20130072504
    Abstract: The present invention relates to new crystalline forms of a purine 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: January 24, 2011
    Publication date: March 21, 2013
    Applicant: CYCLACEL LIMITED
    Inventors: Benjamin Mark Skead, Christopher Peter Worrall, Jonathan Charles Christian Atherton, Julian Scott Northen, Philippe Fernades
  • Patent number: 8349792
    Abstract: A first aspect of the invention relates to a combination comprising 2?-cyano-2?-deoxy-N4-palmitoyl-1-?-D-arabinofuranosyl-cytosine, or a metabolite thereof, or a pharmaceutically acceptable salt thereof, and a cytotoxic agent selected from: (a) a HDAC inhibitor; and (b) a topoisomerase inhibitor selected from etoposide, topotecan and SN-38, or a prodrug thereof. A second aspect relates to a pharmaceutical product comprising (i) 2?-cyano-2?-deoxy-N4-palmitoyl-1-?-D-arabinofuranosyl-cytosine, or a metabolite thereof, or a pharmaceutically acceptable salt thereof, and (ii) a cytotoxic agent selected from: (a) a HDAC inhibitor; and (b) a topoisomerase inhibitor selected from etoposide, topotecan and SN-38, or a prodrug thereof, as a combined preparation for simultaneous, sequential or separate use in therapy.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: January 8, 2013
    Assignee: Cyclacel Limited
    Inventors: Simon R. Green, Ian Neil Fleming
  • Publication number: 20130005747
    Abstract: The present invention provides a method for determining whether or not a cancer subject is suitable for treatment with a purine-based roscovitine-like inhibitor, which method comprises the step of determining the ras status of the cancer, wherein a determination that the subject has mutant ras status is indicative that the subject is suitable for treatment with a purine-based roscovitine-like inhibitor.
    Type: Application
    Filed: December 21, 2011
    Publication date: January 3, 2013
    Applicants: Cyclacel Limited, The General Hospital Corporation d/b/a Massachusetts General Hospital, The Trustees of Dartmouth College
    Inventors: Simon Richard GREEN, Judy H. CHIAO, Jeffery SETTLEMAN, Ethan DMITROVSKY, Fabrizio Vittorio GALIMBERTI
  • Publication number: 20120309723
    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: May 4, 2012
    Publication date: December 6, 2012
    Applicant: CYCLACEL LIMITED
    Inventors: Ariela BENIGNI, Carla ZOJA, Giuseppe REMUZZI, Athos GIANELLA-BORRADORI
  • Patent number: 8124593
    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: Grant
    Filed: November 5, 2008
    Date of Patent: February 28, 2012
    Assignee: Cyclacel Limited
    Inventors: Athos Gianella-Borradori, Judy Chiao
  • Publication number: 20110224421
    Abstract: The present invention relates to a process for preparing a compound of formula 682-4, said process comprising the steps of: (i) converting a compound of formula 682-1 into a compound of formula 682-2; (ii) converting said compound of formula 682-2? into a compound of formula 682-3; and (iii) converting said compound of formula 682-3 into a compound of formula 682-4. Further aspects of the invention relate to the use of the above process in the preparation of 2?-cyano-2?-deoxy-N4-palmitoyl-1-?-D-arabmofuranosylcytosine, a pyrimidine nucleoside which is therapeutically useful in the treatment and/or prevention of cancer.
    Type: Application
    Filed: May 8, 2009
    Publication date: September 15, 2011
    Applicant: CYCLACEL LIMITED
    Inventors: Gavin Wood, Robert Westwood
  • Publication number: 20110207692
    Abstract: A first aspect of the invention relates to a combination comprising a DNA methyltransferase inhibitor and 1-(2-C-cyano-2-dioxy-?-D-arabino-pentofuranosyl)-N4-palmitoyl cytosine, or a metabolite thereof. A second aspect of the invention relates to a pharmaceutical product comprising a DNA methyltransferase inhibitor and 1-(2-C-cyano-2-dioxy-?-D-arabino-pentofuranosyl)-N4-palmitoyl cytosine, or a metabolite thereof, as a combined preparation for simultaneous, sequential or separate use in therapy. A third aspect of the invention relates to a method of treating a proliferative disorder, said method comprising simultaneously, sequentially or separately administering a DNA methyltransferase inhibitor and 1-(2-C-cyano-2-dioxy-?-D-arabino-pentofuranosyl)-N4-palmitoyl cytosine, or a metabolite thereof, to a subject.
    Type: Application
    Filed: June 5, 2009
    Publication date: August 25, 2011
    Applicant: CYCLACEL LIMITED
    Inventors: Simon Richard Green, Ruth Mackay, Ian Neil Fleming
  • Patent number: 7902361
    Abstract: The present invention relates to compounds of formula I, or pharmaceutically acceptable salts thereof, wherein R1 and R5 are each independently H, C(ORj?) or a hydrocarbyl group optionally substituted by one or more R6 groups; R2, R3, and R4 are each independently H, alkyl or alkenyl, each of which may be optionally substituted with one or more R7 groups; R6 and R7 are each independently halogen, NO2, CN, (CH2)mORa, O(CH2)nORb, (CH2)pNRcRd, CF3, COORe, CONRfRg, CORh, SO3H, SO2Ri, SO2NRjRk, (CH2)qNRa?CORg?, Rf?, (CH2)rNRb?SO2Rh?, SO2NRd?Ri?, SO2NRe?(CH2)sORc?, heterocycloalkyl or heteroaryl, wherein said heterocycloalkyl and heteroaryl may be optionally substituted by one or more substituents selected from aralkyl, sulfonyl, Rm and CORn; Rg?, Rh?, Ri? and Rj? are each independently selected from alkyl, aryl, aralkyl and heteroaryl, each of which may be optionally substituted with one or more substituents selected from halogen, OH, NO2, NH2 CF3 and COOH; m, p, q and r are each independently 0, 1, 2 or 3; n
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: March 8, 2011
    Assignee: Cyclacel Limited
    Inventors: Shudong Wang, Gavin Wood, Kenneth Duncan, Christopher Meades, Darren Gibson, Janice McLachlan, Alex Perry, David Blake, Daniella I. Zheleva, Peter Martin Fischer
  • Patent number: 7897605
    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: Grant
    Filed: July 29, 2008
    Date of Patent: March 1, 2011
    Assignee: Cyclacel Limited
    Inventors: Shudong Wang, Christopher Meades, Gavin Wood, Janice O'Boyle, Campbell McInnes, Peter Martin Fischer
  • Publication number: 20110046093
    Abstract: The present invention relates to a compound of formula (VII)I, or a pharmaceutically acceptable salt or ester thereof, wherein: X is NR7; Y is O or N—(CH2)nR19; n is 1, 2 or 3; m is 1 or 2; R1 and R2 are each independently H, alkyl or cycloalkyl; R4 and R4? each independently H alkyl; or R4 and R4? together form a spiro cycloalkyl group; R19 is H, alkyl, aryl or a cycloalkyl group; R6 is OR8 or halogen; and R7 and R8 are each independently H or alkyl. Further aspects relate to pharmaceutical compositions comprising said compounds and use therefore in the treatment of proliferative disorders and the like.
    Type: Application
    Filed: September 29, 2008
    Publication date: February 24, 2011
    Applicant: CYCLACEL LIMITED
    Inventors: Jonathan James Hollick, Stuart Donald Jones, Claire June Flynn, Michael George Thomas
  • Patent number: 7772207
    Abstract: A first aspect of the invention relates to a combination comprising a CDK inhibitor and 1-(2-C-cyano-2-dioxy-?-D-arabino-pentofuranosyl)-N4-palmitoyl cytosine, or a metabolite thereof. A second aspect of the invention relates to a pharmaceutical product comprising a CDK inhibitor and 1-(2-C-cyano-2-dioxy-?-D-arabino-pentofuranosyl)-N4-palmitoyl cytosine, or a metabolite thereof, as a combined preparation for simultaneous, sequential or separate use in therapy. A third aspect of the invention relates to a method of treating a proliferative disorder, said method comprising simultaneously, sequentially or separately administering a CDK inhibitor and 1-(2-C-cyano-2-dioxy-?-D-arabino-pentofuranosyl)-N4-palmitoyl cytosine, or a metabolite thereof, to a subject.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: August 10, 2010
    Assignee: Cyclacel Limited
    Inventors: Simon Richard Green, Roger Neil Sleigh
  • Publication number: 20100143350
    Abstract: The present invention relates to combination comprising (i) an ErbB inhibitor; and (ii) a CDK inhibitor, or a pharmaceutically acceptable salt thereof, selected from: (a) roscovitine; (b) 3-{9-isopropyl-6-[(pyridin-3-ylmethyl)-amino]-9H-purin-2-ylamino}-2-methyl-pentan-2-ol; (c) 3-{9-isopropyl-6-[(pyridin-3-ylmethyl)-amino]-9H-purin-2-ylamino}-pentan-2-ol; and (d) (2R,3S-3-(6-((4,6-dimethylpyridin-3-ylmethylamino)-9-isopropyl-9H-purin-2-ylamino)pentan-2-ol. Further aspects of the invention relate to pharmaceutical products and pharmaceutical compositions comprising combinations according to the invention, and methods of treatment using the same.
    Type: Application
    Filed: October 5, 2009
    Publication date: June 10, 2010
    Applicant: CYCLACEL LIMITED
    Inventors: Simon GREEN, Sheelagh FRAME, Ian FLEMING
  • Publication number: 20100125084
    Abstract: One aspect of the present invention relates to the use of sapacitabine, or a metabolite thereof, in the preparation of a medicament for treating a proliferative disorder, wherein the sapacitabine or metabolite thereof is administered in a dosing regimen comprising at least one treatment cycle, wherein said treatment cycle comprises administering a therapeutically effective amount of sapacitabine or metabolite thereof for about 2 to about 6 days per week, for 2 weeks out of 3 weeks. Another aspect of the invention relates to the use of sapacitabine, or a metabolite thereof, in the preparation of a medicament for treating cutaneous T-cell lymphoma (CTCL).
    Type: Application
    Filed: April 24, 2008
    Publication date: May 20, 2010
    Applicant: CYCLACEL LIMITED
    Inventor: Judy Chiao
  • Publication number: 20100093769
    Abstract: The present invention relates to compounds of formula (I) wherein: R1 and R2 are each independently H, alkyl or haloalkyl; R3 and R4 are each independently H, alkyl, haloalkyl or aryl; R5 is alkyl or cycloalkyl or cycloalkyl-alkyl, each of which may be optionally substituted with one or more OH groups; R6 is selected from cyclopropylamino, cyclopropylmethylamino, cyclobutylamino, cyclobutylmethylamino and where one of X, Y and Z is N and the remainder are CR9; R7, R8 and each R9 are independently H, alkyl or haloalkyl, wherein at least one of R7, R8 and each R9 is other than H. A further aspect of the invention relates to pharmaceutical compositions comprising compounds of formula (I), and the use of said compounds in treating proliferative disorders, viral disorders, stroke, alopecia, CNS disorders, neurodegenerative disorders, or diabetes.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 15, 2010
    Applicants: CYCLACEL LIMITED, CANCER RESEARCH TECHNOLOGY LIMITED
    Inventors: Peter William SHELDRAKE, Butrus ATRASH, Simon GREEN, Edward MCDONALD, Sheelagh FRAME
  • Publication number: 20100069291
    Abstract: A first aspect of the invention relates to a combination comprising 2?-cyano-2?-deoxy-N4-palmitoyl-1-?-D-arabinofuranosyl-cytosine, or a metabolite thereof, or a pharmaceutically acceptable salt thereof, and a cytotoxic agent selected from: (a) a HDAC inhibitor; and (b) a topoisomerase inhibitor selected from etoposide, topotecan and SN-38, or a prodrug thereof. A second aspect relates to a pharmaceutical product comprising (i) 2?-cyano-2?-deoxy-N4-palmitoyl-1-?-D-arabinofuranosyl-cytosine, or a metabolite thereof, or a pharmaceutically acceptable salt thereof, and (ii) a cytotoxic agent selected from: (a) a HDAC inhibitor; and (b) a topoisomerase inhibitor selected from etoposide, topotecan and SN-38, or a prodrug thereof, as a combined preparation for simultaneous, sequential or separate use in therapy.
    Type: Application
    Filed: December 19, 2007
    Publication date: March 18, 2010
    Applicant: CYCLACEL LIMITED
    Inventors: Simon Green, Ian Fleming
  • Publication number: 20100035870
    Abstract: The present invention relates to compounds of formula (I), or pharmaceutically acceptable salts thereof, wherein Z is NR11, NHCO, NHSO2, NHCH2, CH2, CH2CH2, or CH?CH; X is a hydrocarbyl group optionally substituted by one or more R12 groups; R10 and R11 are each independently II or alkyl; R1-R4 are each independently II or (CII2)mR12, where m is O, 1, 2, or 3; each R12 is independently (CH2)aR16, where each R16 is independently selected from O(CH2)bR13, R13, COR13, COOR13, CN, CONR13R14, NR13R14, NR13COR14, SR13, SOR13, SO2R13, NR13SO2R14, SO2OR13, SO2NR13R14, halogen, CF3, and NO2, and wherein each a is 0, 1, 2, or 3 and b is 0, 1, 2, or 3; R13 and R14 are each independently H or (CH2)nR15, where n is 0, 1, 2, or 3; and each R15 is independently selected from alkyl, cycloalkyl, heteroaryl, aralkyl, aryl and heterocycloalkyl, each of which may be optionally substituted by one or more substituents selected from halogen, OH, CN, COO-alkyl, aralkyl, SO2-alkyl, SO2-aryl, COOH, CO— alkyl, CO-aryl, NH2, NH-alkyl, N
    Type: Application
    Filed: October 9, 2006
    Publication date: February 11, 2010
    Applicant: Cyclacel Limited
    Inventors: Stuart Jones, Robert Westwood, Mark Thomas, Janice McLachlan, Kenneth Duncan, Fred Scaerou, Daniella I. Zheleva
  • Publication number: 20090325983
    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: Application
    Filed: June 23, 2009
    Publication date: December 31, 2009
    Applicants: CYCLACEL LIMITED, CANCER RESEARCH TECHNOLOGY LIMITED
    Inventors: Peter Martin FISCHER, Michael JARMAN, Edward MCDONALD, Bernard NUTLEY, Florence RAYNAUD, Stuart WILSON, Paul WORKMAN
  • Publication number: 20090318446
    Abstract: The present invention relates to compounds of formula (I), or pharmaceutically acceptable salts thereof. The present invention seeks to provide further substituted heteroaryl-substituted pyrimidine derivatives. More specifically, the invention relates to compounds that have broad therapeutic applications in the treatment of a number of different diseases and/or that are capable of inhibiting one or more protein kinases.
    Type: Application
    Filed: January 11, 2006
    Publication date: December 24, 2009
    Applicant: Cyclacel Limited
    Inventors: Peter Martin Fischer, Shudong Wang, Christopher Meades, Matin J.I. Andrews, Darren Gibson, Kenneth Duncan