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).
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Publication number: 20150051270Abstract: 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 substituenType: ApplicationFiled: February 15, 2013Publication date: February 19, 2015Inventors: Shailesh Mistry, Etíenne Daras, Christophe Fromont, Gopal Jadhav, Peter Martin Fischer, Barrie Kellam, Stephen John Hill, Jillian Glenda Baker
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Patent number: 8846696Abstract: 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: GrantFiled: June 23, 2009Date of Patent: September 30, 2014Assignees: Cyclacel Limited, Cancer Research Technology LimitedInventors: Peter Martin Fischer, Michael Jarman, Edward McDonald, Bernard Nutley, Florence Raynaud, Stuart Wilson, Paul Workman
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Publication number: 20130261178Abstract: 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: ApplicationFiled: July 5, 2010Publication date: October 3, 2013Inventors: Shailesh Mistry, Etienne Daras, Christophe Fromont, Gopal Jadhav, Peter Martin Fischer, Barrie Kellam, Stephen John Hill, Jillian Glenda Baker
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Patent number: 8357673Abstract: 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: GrantFiled: September 1, 2005Date of Patent: January 22, 2013Assignee: Univerzita Palackeho V OlomouciInventors: Petr Cankar, Iveta Frysova, Vladimir Krystof, Rene Lenobel, Jan Slouka, Miroslav Strnad, Peter Martin Fischer
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Publication number: 20110092490Abstract: 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 compType: ApplicationFiled: March 26, 2009Publication date: April 21, 2011Applicant: THE UNIVERSITY OF NOTTINGHAMInventors: Shudong Wang, Shenhua Shi, Andrey Zaytsev, Peter Martin Fischer
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Patent number: 7902361Abstract: 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; nType: GrantFiled: April 21, 2006Date of Patent: March 8, 2011Assignee: Cyclacel LimitedInventors: Shudong Wang, Gavin Wood, Kenneth Duncan, Christopher Meades, Darren Gibson, Janice McLachlan, Alex Perry, David Blake, Daniella I. Zheleva, Peter Martin Fischer
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Patent number: 7897605Abstract: 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: GrantFiled: July 29, 2008Date of Patent: March 1, 2011Assignee: Cyclacel LimitedInventors: Shudong Wang, Christopher Meades, Gavin Wood, Janice O'Boyle, Campbell McInnes, Peter Martin Fischer
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Publication number: 20090325983Abstract: 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: ApplicationFiled: June 23, 2009Publication date: December 31, 2009Applicants: CYCLACEL LIMITED, CANCER RESEARCH TECHNOLOGY LIMITEDInventors: Peter Martin FISCHER, Michael JARMAN, Edward MCDONALD, Bernard NUTLEY, Florence RAYNAUD, Stuart WILSON, Paul WORKMAN
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Publication number: 20090318446Abstract: 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: ApplicationFiled: January 11, 2006Publication date: December 24, 2009Applicant: Cyclacel LimitedInventors: Peter Martin Fischer, Shudong Wang, Christopher Meades, Matin J.I. Andrews, Darren Gibson, Kenneth Duncan
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Patent number: 7612079Abstract: 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: GrantFiled: December 18, 2003Date of Patent: November 3, 2009Assignees: Cyclacel Limited, Cancer Research Technology LimitedInventors: Peter Martin Fischer, Mike Jarman, Ted McDonald, Bernard Nutley, Florence Raynaud, Stuart Wilson, Paul Workman
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Patent number: 7582642Abstract: 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: GrantFiled: January 11, 2005Date of Patent: September 1, 2009Assignees: Cyclacel Limited, Cancer Research Technology LimitedInventors: Peter Martin Fischer, Michael Jarman, Edward McDonald, Bernard Nutley, Florence Raynaud, Stuart Wilson, Paul Workman
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Publication number: 20090215805Abstract: 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: ApplicationFiled: October 9, 2006Publication date: August 27, 2009Applicant: Cyclacel LimitedInventors: Gavin Wood, Christopher Meades, Peter Martin Fischer, Shudong Wang, Kenneth Duncan, Daniella I. Zheleva, Campbell Mcinnes, Mark Thomas
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Patent number: 7576091Abstract: 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, haType: GrantFiled: January 6, 2006Date of Patent: August 18, 2009Assignee: Cyclacel LimitedInventors: Campbell McInnes, Mark Peter Thomas, Shudong Wang, Neil McIntyre, Nicholas Westwood, Peter Martin Fischer
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Patent number: 7544689Abstract: 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: GrantFiled: September 28, 2005Date of Patent: June 9, 2009Assignees: Cyclacel Limited, Cancer Research Technology LimitedInventors: Peter Martin Fischer, Michael Jarman, Edward McDonald, Bernard Nutley, Florence Raynaud, Stuart Wilson, Paul Workman
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Publication number: 20090137572Abstract: 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: ApplicationFiled: May 26, 2005Publication date: May 28, 2009Inventors: Shudong Wang, Gavin Wood, Kenneth Duncan, Christopher Meades, Darren Gibson, Janice McLachlan, Peter Martin Fischer
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Publication number: 20080318954Abstract: 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: ApplicationFiled: February 7, 2005Publication date: December 25, 2008Applicant: Cyclacel LimitedInventors: Kenneth Duncan, Darren Gibson, Shudong Wang, Daniella I. Zheleva, Peter Martin Fischer
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Publication number: 20080312238Abstract: 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: ApplicationFiled: September 1, 2005Publication date: December 18, 2008Applicant: 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
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Publication number: 20080287439Abstract: 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: ApplicationFiled: July 29, 2008Publication date: November 20, 2008Applicant: Cyclacel LimitedInventors: Shudong Wang, Christopher Meades, Gavin Wood, Janice O'Boyle, Campbell McInnes, Peter Martin Fischer
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Patent number: 7449544Abstract: 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: GrantFiled: May 19, 2003Date of Patent: November 11, 2008Assignee: Cyclacel LimitedInventors: Daniella I. Zheleva, Peter Martin Fischer, Campbell McInnes, Martin J. I. Andrews, Weng C. Chan, Gail E. Atkinson
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Patent number: 7432260Abstract: 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: GrantFiled: November 17, 2004Date of Patent: October 7, 2008Assignee: Cyclacel LimtedInventors: Shudong Wang, Christopher Meades, Gavin Wood, Janice O'Boyle, Campbell McInnes, Peter Martin Fischer