Patents by Inventor Peter Martin Fischer

Peter Martin Fischer 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: 20150051270
    Abstract: A compound of formula I, and its pharmaceutically acceptable salt or salts and physiologically hydrolysable derivatives in free form or salt form: wherein either Q1, CR6a and optionally R6b together form a cyclic moiety wherein: Q1 is selected from C1-2 alkylene, C1-2 alkenylene, OC1 alkylene and OC1 alkenylene moieties optionally substituted by oxo; R6a is a single bond and R6b is H; or R6a and R6b together form a double bond; and Q2 and Q3 are independently selected from H, R1 and R2; or Q2 and Q3 together form a cyclic moiety in which one of Q2 and Q3 is a cyclic moiety selected from OC1 alkylene and OC1 alkenylene moieties optionally substituted by oxo or a group R5 as here in below defined for R2 and the other of Q2 and Q3 is a cyclic moiety selected from C1-2 alkylene, C1-2 alkenylene and OC1 alkylene optionally substituted by oxo; R6a and R6b are each H or a cyclic moiety as defined above; and Q1 is selected from H, R1 and R2 and a cyclic moiety as defined above; and R1-4 are H or substituen
    Type: Application
    Filed: February 15, 2013
    Publication date: February 19, 2015
    Inventors: Shailesh Mistry, Etíenne Daras, Christophe Fromont, Gopal Jadhav, Peter Martin Fischer, Barrie Kellam, Stephen John Hill, Jillian Glenda Baker
  • Patent number: 8846696
    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: June 23, 2009
    Date of Patent: September 30, 2014
    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: 20130261178
    Abstract: A compound of formula I-0, and its pharmaceutically acceptable salt or salts and physiologically hydrolysable derivatives in free form or salt form: wherein Z1 is C1-C4 linear or branched alkyl or alkenyl; R4 is selected from unsubstituted and substituted C3-C3 cycloalkyl, C1-C8 linear or branched alkyl, C2-5 alkenyl, C6-C10 heteroaryl or aryl, or C3-C8 heterocyclyl which may be part unsaturated, and combinations thereof; Z is linear C2-3 alkylene; X1 is selected from NH and O; X2 is selected from unsaturated C and unsaturated S; and X3 is selected from NH and CH2; or one of X1 and X3 is a single bond; or X1 is O and X2 and X3 together are a single bond; and R7 is selected from oxo, F, Cl, Br, CN, NH2, NR92, NO2, CF3, OR9, COR9, OCOR9, COOR9, NR9COR9, CONR92SO2NR92, NR9SO2R9; and R8 is selected from C1-5 alkyl, C1-5 alkoxyl, C2-5 alkenyl or alkynyl, C6-10 aryl and C3-8 cycloalkyl and combinations thereof, which may be unsubstituted or further substituted by one or more F, Cl, Br, CN, NH2, NR32, NO2, CF3;
    Type: Application
    Filed: July 5, 2010
    Publication date: October 3, 2013
    Inventors: Shailesh Mistry, Etienne Daras, Christophe Fromont, Gopal Jadhav, Peter Martin Fischer, Barrie Kellam, Stephen John Hill, Jillian Glenda Baker
  • Patent number: 8357673
    Abstract: A series of mono- and binuclear 4-arylazo-3,5-diamino-pyrazoles which are useful for inhibition of cyclin-dependent kinases (preferably CDK9). Hence they can be used as antimitotic-, pro-apoptotic and antiinflammatory drugs, in particular, in chemotherapy of cancer and asthma, therapy of psoriasis and parasitoses as those caused by fungi or protists, treatment of Alzheimer's disease or as antineurodegenerative drugs, or to suppress immunostimulation. These compounds are useful in a variety of utilities, including as intermediates in the preparation of flame-retardants, diagnostic reagents and therapeutics, including antivirals and immunosuppressors.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: January 22, 2013
    Assignee: Univerzita Palackeho V Olomouci
    Inventors: Petr Cankar, Iveta Frysova, Vladimir Krystof, Rene Lenobel, Jan Slouka, Miroslav Strnad, Peter Martin Fischer
  • Publication number: 20110092490
    Abstract: A compound of formula (I) and its pharmaceutically acceptable salts or solvates and physiologically hydrolysable, solubilising or immobilisable derivatives wherein: Ar is a 5-membered heteroaryl ring wherein X1 and X2 are one or two heteroatoms or Ar is a 6-membered aromatic ring, wherein heteroatoms are selected from S, O, N, Se; Z is NH, NHCO, NHSO2, N-alkyl, CH2NH, CH2N-alkyl, CH2, CH2CH2, CH?CH, CH2CONH, SO2, or SO; Y is N CR3; R1, R2, R5, R6, R7, R8 and R9 are each independently H, or a substituent; R3, when present, is selected from alkyl and a substituent, with the proviso that when Y is CR3, Ar is a 5-membered heterocycle comprising one or two N heteroatoms and Z is NH, then R3 is selected from C3+ alkyl and a substituent; R4 is selected from H, alkyl and R13 as hereinbefore defined, with the proviso that when R3 is absent, R4 is selected from alkyl and a substituent; processes for the preparation thereof, intermediates and precursors therefore and the use thereof as a medicament, and therapeutic comp
    Type: Application
    Filed: March 26, 2009
    Publication date: April 21, 2011
    Applicant: THE UNIVERSITY OF NOTTINGHAM
    Inventors: Shudong Wang, Shenhua Shi, Andrey Zaytsev, Peter Martin Fischer
  • 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: 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
  • 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
  • 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: 20090137572
    Abstract: The present invention relates to selected substituted pyrimidines their preparation, pharmaceutical compositions containing them and their use as inhibitors of one or more protein kinases, and hence their use in the treatment of proliferative disorders, viral disorders and/or other disorders.
    Type: Application
    Filed: May 26, 2005
    Publication date: May 28, 2009
    Inventors: Shudong Wang, Gavin Wood, Kenneth Duncan, Christopher Meades, Darren Gibson, Janice McLachlan, Peter Martin Fischer
  • 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: 20080312238
    Abstract: A series of mono- and binuclear 4-arylazo-3,5-diamino-pyrazoles which are useful for inhibition of cyclin-dependent kinases (preferably CDK9). Hence they can be used as antimitotic-, pro-apoptotic and antiinflammatory drugs, in particular, in chemotherapy of cancer and asthma, therapy of psoriasis and parasitoses as those caused by fungi or protists, treatment of Alzheimer's disease or as anti neurodegenerative drugs, or to suppress immunostimulation. These compounds are useful in a variety of utilities, including as intermediates in the preparation of flame-retardants, diagnostic reagents and therapeutics, including antivirals and immunosuppressors.
    Type: Application
    Filed: September 1, 2005
    Publication date: December 18, 2008
    Applicant: Institute of Experimental Bontany of the Academy of Sciences of the Czech Republic, v.v.i.
    Inventors: Petr Cankar, Iveta Frysova, Vladimir Krystof, Rene Lenobel, Jan Slouka, Miroslav Strnad, 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
  • Patent number: 7432260
    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: November 17, 2004
    Date of Patent: October 7, 2008
    Assignee: Cyclacel Limted
    Inventors: Shudong Wang, Christopher Meades, Gavin Wood, Janice O'Boyle, Campbell McInnes, Peter Martin Fischer