Patents by Inventor Michael Alistair O'Brien

Michael Alistair O'Brien 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: 20100093718
    Abstract: The invention relates to new bicyclic heterocyclic derivative compounds of Formula (I), to pharmaceutical compositions comprising said compounds and to the use of said compounds in the treatment of diseases, e.g. cancer The compounds of Formula (I) are inhibitors of FGFR, VEGFR or PDGFR.
    Type: Application
    Filed: December 21, 2007
    Publication date: April 15, 2010
    Inventors: Valerio Berdini, Gilbert Ebai Besong, Owen Callaghan, Maria Grazia Carr, Miles Stuart Congreve, Adrian Liam Gill, Charlotte Mary Griffiths-Jones, Andrew Madin, Christopher William Murray, Rajdeep Kaur Nijjar, Michael Alistair O'Brien, Andrew Pike, Gordon Saxty, Richard David Taylor, Emma Vickerstaffe
  • Publication number: 20090215777
    Abstract: The invention provides a compound for use as an inhibitor of Hsp90, the compound having the formula (I): or salts, tautomers, solvates or N-oxides thereof; wherein: A is N or a group CR3; R1 is a monocyclic or bicyclic carbocyclic or heterocyclic ring of 5 to 10 ring members of which up to two ring members may be heteroatoms selected from N, O and S and the remainder are carbon atoms, the carbocyclic or heterocyclic ring being optionally substituted by one or more substituent groups independently selected from R10; and R2, R3 and R10 are as defined in the claims.
    Type: Application
    Filed: May 19, 2006
    Publication date: August 27, 2009
    Applicant: Astex Therapeutics Ltd.
    Inventors: Gianni Chessari, Miles Stuart Congreve, Owen Callaghan, Suzanna Ruth Cowan, Christopher William Murray, Alison Jo-Anne Woolford, Michael Alistair O'Brien, Andrew James Woodhead
  • Publication number: 20090215772
    Abstract: The invention provides compounds of the formula (I): or salts, tautomers, solvates and N-oxides thereof; wherein R1 is hydroxy or hydrogen; R2 is hydroxy; methoxy or hydrogen; provided that at least one of R1 and R2 is hydroxy; R3 is selected from hydrogen; halogen; cyano; optionally substituted C1-5 hydrocarbyl and optionally substituted C1-5 hydrocarbyloxy; R4 is selected from hydrogen; a group —(O)n—R7 where n is 0 or 1 and R7 is an optionally substituted acyclic C1-5 hydrocarbyl group or a monocyclic carbocyclic or heterocyclic group having 3 to 7 ring members; halogen; cyano; hydroxy; amino; and optionally substituted mono- or di-C1-5 hydrocarbylamino; or R3 and R4 together form a monocyclic carbocyclic or heterocyclic ring of 5 to 7 ring members; and NR5R6 forms an optionally substituted bicyclic heterocyclic group having 8 to 12 ring members of which up to 5 ring members are heteroatoms selected from oxygen, nitrogen and sulphur. The compounds have activity as Hsp90 inhibitors.
    Type: Application
    Filed: April 13, 2006
    Publication date: August 27, 2009
    Applicant: Astex Therapeutics Limited
    Inventors: Gianni Chessari, Miles Stuart Congreve, Eva Figueroa Navarro, Martyn Frederickson, Christopher Murray, Alison Jo-Anne Woolford, Maria Grazia Carr, Michael Alistair O'Brien, Andrew James Woodhead, Robert Downham, Theresa Rachel Phillips
  • Publication number: 20080312223
    Abstract: The invention provides a compound of the formula (I): or a salt, N-oxide, tautomer or solvate thereof, wherein X is CR5 or N; each of Q1 and Q2 is a carbon atom; Q3 is selected from S and CH; Q4 is selected from CR2 and S; provided that one of Q3 and Q4 is S and the other of Q3 and Q4 is not S; wherein when Q3 is S, there is a double bond between Q1 and Q4 and a double bond between Q2 and the adjacent ring nitrogen atom N; and when Q4 is S, there is a double bond between Q1 and Q2, and a double bond between Q3 and the adjacent ring nitrogen atom N; A is a bond or —(CH2)m—(B)n—; B is C?O, NR8(C?O) or O(C?O) wherein R1 is hydrogen or C1_4 hydrocarbyl optionally substituted by hydroxy or C1-4 alkoxy; m is 0, 1 or 2; n is 0 or 1; Ro is hydrogen or, together with NRg when present, forms a group —(CH2)p— wherein p is 2 to 4; R1 is hydrogen, a carbocyclic or heterocyclic group having from 3 to 12 ring members, or an optionally substituted C1-8 hydrocarbyl group; R2 is hydrogen, halogen, methoxy, or a C1-4 hydrocarby
    Type: Application
    Filed: December 30, 2005
    Publication date: December 18, 2008
    Applicant: ASTEX THERAPEUTICS LIMITED
    Inventors: Valerio Berdini, Michael Alistair O'Brien, Theresa Rachel Phillips, Paul Graham Wyatt
  • Publication number: 20080306054
    Abstract: The invention provides a compound for use as an inhibitor of Hsp90, the compound having the formula (I): or salts, tautomers, solvates and N-oxides thereof; wherein R1 is hydroxy or hydrogen; R2 is hydroxy; methoxy or hydrogen; provided that at least one of R1 and R2 is hydroxy; R3 is selected from hydrogen; halogen; cyano; C1-5 hydrocarbyl and C1-5 hydrocarbyloxy; wherein the C1-5 hydrocarbyl and C1-5 hydrocarbyloxy moieties are each optionally substituted by one or more substituents selected from hydroxy, halogen, C1-2 alkoxy, amino, mono- and di-C1-2 alkylamino, and aryl and heteroaryl groups of 5 to 12 ring members; R4 is selected from hydrogen; a group —(O)n—R7 where n is 0 or 1 and R7 is an acyclic C1-5 hydrocarbyl group or a monocyclic carbocyclic or heterocyclic group having 3 to 7 ring members; halogen; cyano; hydroxy; amino; and mono- or di-C1-5 hydrocarbyl-amino, wherein the acyclic C1-5 hydrocarbyl group and the mono and di-C1-5 hydrocarbylamino moieties in each instance are optionally substit
    Type: Application
    Filed: April 13, 2006
    Publication date: December 11, 2008
    Applicant: ASTEX THERAPEUTICS LIMITED
    Inventors: Gianni Chessari, Miles Stuart Congreve, Eva Figueroa Navarro, Martyn Frederickson, Christopher Murray, Alison Jo-Anne Woolford, Maria Grazia Carr, Michael Alistair O'Brien, Andrew James Woodhead
  • Publication number: 20080306069
    Abstract: The invention provides compounds of the formula (I), or salts, tautomers, N-oxides or solvates thereof wherein: R1 is selected from: (a) 2,6-dichlorophenyl; (b) 2,6-difluorophenyl; (c) a 2,3,6-trisubstituted phenyl group wherein the substituents for the phenyl group are selected from fluorine, chlorine, methyl and methoxy; (d) a group RO; (e) a group R a; (f) a group RIb; (g) a group RIc; (h) a group RId; and 0) 2,6-difluorophenylamino; wherein R) 0?, r R>llaa, T Rj HbD, T R) HcC, r R>Iid?, r R>>2zaa, r R>22bD and RJ are as defined in the claims. The compounds have activity as inhibitors of cdk kinase (such as cdk1 or cdk2) and glycogen synthase kinase-3 activity.
    Type: Application
    Filed: January 20, 2006
    Publication date: December 11, 2008
    Applicant: ASTEX THERAPEUTICS LIMITED
    Inventors: Paul Graham Wyatt, Valerio Berdini, Adrian Liam Gill, Gary Trewartha, Andrew James Woodhead, Eva Figueroa Navarro, Michael Alistair O'Brien, Theresa Rachael Phillips
  • Publication number: 20080269207
    Abstract: The invention provides compounds of the formula (0) or salts or tautomers or N-oxides or solvates thereof for use in the prophylaxis or treatment of disease states and conditions such as cancers mediated by cyclin-dependent kinase and glycogen synthase kinase-3. In formula (0): X is a group R1-A-NR4— or a 5- or 6-membered carbocyclic or heterocyclic ring; A is a bond, SO2, C?O, NRg(C?O) or O(C?O) wherein Rg is hydrogen or C1-4 hydrocarbyl optionally substituted by hydroxy or C1-4 alkoxy; Y is a bond or an alkylene chain of 1, 2 or 3 carbon atoms in length; R1 is hydrogen; a carbocyclic or heterocyclic group having from 3 to 12 ring members; or a C1-8 hydrocarbyl group optionally substituted by one or more substituents selected from halogen (e.g.
    Type: Application
    Filed: October 19, 2007
    Publication date: October 30, 2008
    Applicant: ASTEX THERAPEUTICS, LTD.
    Inventors: Valerio Berdini, Michael Alistair O'Brien, Maria Grazia Carr, Theresa Rachel Early, Adrian Liam Gill, Gary Trewartha, Alison Jo-Anne Woolford, Andrew James Woodhead, Paul Graham Wyatt
  • Publication number: 20080200509
    Abstract: The invention provides compounds of the formula (0) or salts or tautomers or N-oxides or solvates thereof for use in the prophylaxis or treatment of disease states and conditions such as cancers mediated by cyclin-dependent kinase and glycogen synthase kinase-3. In formula (0): X is a group R1-A-NR4— or a 5- or 6-membered carbocyclic or heterocyclic ring; A is a bond, SO2, C?O, NRg(C?O) or O(C?O) wherein Rg is hydrogen or C1-4 hydrocarbyl optionally substituted by hydroxy or C1-4 alkoxy; Y is a bond or an alkylene chain of 1, 2 or 3 carbon atoms in length; R1 is hydrogen; a carbocyclic or heterocyclic group having from 3 to 12 ring members; or a C1-8 hydrocarbyl group optionally substituted by one or more substituents selected from halogen (e.g.
    Type: Application
    Filed: October 19, 2007
    Publication date: August 21, 2008
    Applicant: ASTEX THERAPEUTICS, LTD.
    Inventors: Valerio Berdini, Michael Alistair O'Brien, Maria Grazia Carr, Theresa Rachel Early, Adrian Liam Gill, Gary Trewartha, Alison Jo-Anne Woolford, Andrew James Woodhead, Paul Graham Wyatt
  • Publication number: 20080194562
    Abstract: The invention provides compounds of the formula (I) or a salt, tautomer, solvate or N-oxides thereof; wherein: R1 is selected from (a) 2,6-dichlorophenyl; (b) 2,6-difluorophenyl; (c) a 2,3,6-trisubstituted phenyl group wherein the substituents are fluorine, chlorine, methyl or methoxy; and (d) a group R0 wherein R0 is a 3-12 membered carbocyclic or heterocyclic group; or optionally substituted C1-8 hydrocarbyl; R2a and R2b are each hydrogen or methyl; and R3 is as defined in the claims. The compounds have activity as inhibitors of Cyclin Dependent Kinases (CDK) and Glycogen Synthase Kinases (GSK) kinases and are useful in the treatment or prophylaxis of disease states or conditions mediated by the kinases.
    Type: Application
    Filed: January 20, 2006
    Publication date: August 14, 2008
    Applicant: ASTEX THERAPEUTICS LIMITED
    Inventors: Paul Graham Wyatt, Valerio Berdini, Adrian Liam Gill, Gary Trewartha, Andrew James Woodhead, Eva Figueroa Navarro, Michael Alistair O'Brien, Theresa Rachael Phillips
  • Publication number: 20080167309
    Abstract: The invention provides a compound for use in the prophylaxis or treatment of a disease state or condition mediated by a cyclin dependent kinase, the compound having the formula (I): and salts, tautomers, N-oxides or solvates thereof, wherein A is a bond, C?O, NRg(C?O) or O(C?O) wherein Rg is hydrogen or C1-4 hydrocarbyl optionally substituted by hydroxy or C1-4 alkoxy; Y is a bond or an alkylene chain of 1, 2 or 3 carbon atoms in length; Q is S or CR2; J is S or CH; provided that one of Q and J is S, and the other of Q and J is not S; when Q is S, there is a double bond between the ring carbon atoms “a” and “b” and a double bond between the ring nitrogen N and J; and when J is S, there is a double bond between Q and the ring carbon atom “a” and a double bond between the ring nitrogen N and the ring carbon atom “b”; and R1 to R4 are as defined in the claims.
    Type: Application
    Filed: July 22, 2005
    Publication date: July 10, 2008
    Applicant: ASTEX THERAPEUTICS, LTD.
    Inventors: Valerio Berdini, Theresa Rachael Early, Michael Alistair O'Brien, Andrew James Woodhead, Paul Graham Wyatt
  • Patent number: 7385059
    Abstract: The invention provides compounds of the formula (0) or salts or tautomers or N-oxides or solvates thereof for use in the prophylaxis or treatment of disease states and conditions such as cancers mediated by cyclin-dependent kinase and glycogen synthase kinase-3. In formula (0): X is a group R1-A-NR4— or a 5- or 6-membered carbocyclic or heterocyclic ring; A is a bond, SO2, C?O, NRg(C?O) or O(C?O) wherein Rg is hydrogen or C1-4 hydrocarbyl optionally substituted by hydroxy or C1-4 alkoxy; Y is a bond or an alkylene chain of 1, 2 or 3 carbon atoms in length; R1 is hydrogen; a carbocyclic or heterocyclic group having from 3 to 12 ring members; or a C1-8 hydrocarbyl group optionally substituted by one or more substituents selected from halogen (e.g.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: June 10, 2008
    Assignee: Astex Therapeutics Limited
    Inventors: Valerio Berdini, Michael Alistair O'Brien, Maria Grazia Carr, Theresa Rachel Early, Adrian Liam Gill, Gary Trewartha, Alison Jo-Anne Woolford, Andrew James Woodhead, Paul Graham Wyatt