Patents by Inventor Martin Quibell

Martin Quibell 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).

  • Patent number: 7425562
    Abstract: Compounds of general formula (I) or general formula (II) wherein R1, P1, P2, Q, Y, (X)o, (W)n, (V)m, Z and U are as defined in the specification, are inhibitors of cruzipain and other cysteine protease inhibitors and are useful as therapeutic agents, for example in Chagas' disease, or for validating therapeutic target compounds.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: September 16, 2008
    Assignee: Amura Therapeutics Ltd.
    Inventor: Martin Quibell
  • Publication number: 20080213297
    Abstract: The present invention relates to a method of production of a hydrazide modified sugar comprising a step of reacting a sugar with a hydrazide in a reaction solvent at a pH of between 3 and 5.5, wherein the solvent comprises an aqueous based solvent and an optional polar organic co-solvent. A further aspect of the invention relates to a method of production of a polysaccharide epitope carrier protein conjugate comprising the steps of: (a) reacting a polysaccharide epitope with a hydrazide to form a hydrazide modified polysaccharide epitope; (b) reacting the hydrazide modified polysaccharide epitope with a linker that has been pre-coupled to a carrier protein.
    Type: Application
    Filed: July 16, 2007
    Publication date: September 4, 2008
    Inventors: Nicholas Finn, Martin Quibell, Manoj Kumar Ramjee, William Gordon Turnell
  • Patent number: 7132449
    Abstract: Compounds of general formula (I): wherein R1, R2, Y, (X)o, (W)n, (V)m, Z and U are as defined in the specification, are inhibitors of cruzipain and other cysteine protease inhibitors and are useful as therapeutic agents, for example in Chagas' disease, or for validating therapeutic target compounds.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: November 7, 2006
    Assignee: Amura Therapeutics Limited
    Inventor: Martin Quibell
  • Publication number: 20060100431
    Abstract: Compounds of general formula (I) wherein Z=CR3R4, where R3 and R4 are independently chosen from C0-7-alkyl P1=CR5R6, P2=O, CR7R8 or NR9, Y=CR10R11—C(O) or CR10R11—C(S) or CR10R11—S(O) or CR10R11—SO2(X)0=.CR16R17 (W)n=0, S, C(O), S(O) or S(O)2— or NR18(V)m=C(O), C(S), S(O), S(O)2, S(O)2NH, OC(O), NHC(O), NHS(O), NHS(O)2, OC(O)NH, C(O)NH or CR19R20, C?N—C(O)—OR19 or C?N?C(O)—NHR19, U=a stable. 5- to 7 membered monocyclic or a stable 8- to 11-membered bicyclic ring which is either saturated or unsaturated, and which includes zero to four heteroatoms and their sales, hydrates, solvates, complexes and prodruges are inhibitors of cathepsin K and other cysteine protease inhibitors and are useful as therapeutic agents, for example in osteoporosis, Paget's disease gingival diseases such as gingivitis and periodontis, hypercalaemia of malignancy, metabolic bone disease, diseases involving matrix or cartilage degradation, in particular osteoarthitis and rheumatoid arthritis and neoplastic diseases.
    Type: Application
    Filed: July 15, 2003
    Publication date: May 11, 2006
    Applicant: Amura Therapeutics Limited
    Inventors: Martin Quibell, Peter Ray, John Watts
  • Patent number: 6958358
    Abstract: Compounds of general formula (I): wherein R1, Y, (X)o, (W)n, (V)m, Z and U are as defined in the specification, are inhibitors of cruzipain and other cysteine protease inhibitors and are useful as therapeutic agents, for example in Chagas' disease, or for validating therapeutic target compounds.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: October 25, 2005
    Assignee: Amura Therapeutics Limited
    Inventors: Martin Quibell, Manoj Kumar Ramjee
  • Publication number: 20050158370
    Abstract: Compounds according to general formulae (Ia to Ie) wherein: X?O or S; Y is O, S or CH2, CHR, CRR, where R is C1-7 alkyl; Z is O or S; R1 is H or C1-7 alkyl; R2 is H or C1-7 alkyl; R4 is H or C1-7 alkyl at any vacant position on the aromatic ring; R3 is C1-7 alkyl-L1-R5-L2-R6—COOH, C3-10 cycloalkyl-L1-R5-L2-R6—COOH or Ar—C0-7 alkyl-L1-R5-L2-R6—COOH; each of L1 and L2 is absent or a suitable linker such as an amide CONH; or an ether —O—, or a thioether —S— or a sulphone —SO2—; R5 is C1-7 alkyl, C3-10 cycloalkyl or Ar—C0-7 alkyl each of which is substituted with either NR8R9, where the nitrogen atom is capable of being protonated in solution to give N+HR8R9; or a quaternary nitrogen atom N+R8R9R10, such that R5 contains a positive charge; each of R8, R9 and R10 is independently C1-7 alkyl, C3-10 cycloalkyl or Ar—C0-7 alkyl, or any two or more of R8, R9 and R10 together form an alicyclic or arylalicyclic ring system; R6 is C1-7 alkyl, C3-10 cycloalkyl or Ar—C0-7 alkyl; and their salts, hydrates, solvates, complex
    Type: Application
    Filed: April 7, 2003
    Publication date: July 21, 2005
    Applicant: Amura Therapeutics Limited
    Inventors: Nicholas Flinn, Martin Quibell, William Turnell, Manoj Ramjee
  • Publication number: 20050070598
    Abstract: of the formula (IV): where: R1=R?C(O), R?SO2, R?=a bicyclic, saturated or unsaturated, 8-12 membered ring system containing 0-4 hetero atoms selected from S, O and N, which is optionally substituted with up to four substituents independently selected from groups a), b) and c) below; or R?=a monocyclic, saturated or unsaturated, 5-7 membered ring containing 0-3 hetero atoms selected from S, O and N, which monocyclic ring bears at least one substituent selected from group a) and/or c) and which may optionally bear one or two further substituents selected from group b); R4=H, C1-7-alkyl, Ar—C1-7-alkyl, Ar, C3-7-cycloalkyl; C2-7alkenyl; R3=C1-7-alkyl, C2-C7 alkenyl, C2-C7 alkenyl, C3-7-cycloalkyl, Ar—C1-7-alkyl, Ar; R5=C1-7-alkyl, halogen, Ar—C1-7-alkyl, CO-3-alkyl-CONR3R4 or a bulky amine R6 is H, C1-7-alkyl, Ar—C1-7-alkyl, C1-3-alkyl-SO2-Rix, C1-3-alkyl-C(O)—NHRix or CH2XAr q is 0 or 1 have utility as inhibitors of cysteine proteases such as cathepsin K and falcipain.
    Type: Application
    Filed: October 3, 2003
    Publication date: March 31, 2005
    Applicant: MEDIVIR AB
    Inventors: Martin Quibell, Steven Taylor, Urszula Grabowska, Magnus Nilsson, Veronique Morrison
  • Publication number: 20050020588
    Abstract: Cathepsin S is a highly active cysteine protease belonging to the papain superfamily. It is found mainly in lymph nodes, spleen, and macrophages and this limited occurrence suggests the potential involvement of this enzyme in the pathogenesis of degenerative disease. The invention relates to novel protease inhibitors, particularly inhibitors of the cysteine proteases of the papain superfamily and more particularly to Cathepsin S. The inhibitors are Furanone derivatives of Formula (II) which have a characteristic non-hydrogen substituent R5. They are selective over other members of the family and in particular show selectivity over other members of the Cathepsin family such as L and K.
    Type: Application
    Filed: August 27, 2004
    Publication date: January 27, 2005
    Inventors: Martin Quibell, Steven Taylor, Urszula Grabowska, Magnus Nilsson, Veronique Morisson
  • Publication number: 20040229915
    Abstract: of the formula (IV): 1
    Type: Application
    Filed: May 24, 2004
    Publication date: November 18, 2004
    Applicant: MEDIVIR AB
    Inventors: Martin Quibell, Steven Taylor, Urszula Grabowska, Magnus Nilsson, Veronique Morrison
  • Publication number: 20040138250
    Abstract: Compounds of general formula (I) or general formula (II) wherein R1, P1, P2, Q, Y, (X)o, (W)n, (V)m, Z and U are as defined in the specification, are inhibitors of cruzipain and other cysteine protease inhibitors and are useful as therapeutic agents, for example in Chagas' disease, or for validating therapeutic target compounds.
    Type: Application
    Filed: January 8, 2004
    Publication date: July 15, 2004
    Inventor: Martin Quibell
  • Publication number: 20040127549
    Abstract: Compounds of general formula (I), wherein R1, R2, R3, Y, (X)o, (W)n, (V)m, Z and U are as defined in the specification, are inhibitors of cruzipain and other cysteine protease inhibitors and are useful as therapeutic agents, for example in Chagas' disease, or for validating therapeutic target compounds.
    Type: Application
    Filed: January 8, 2004
    Publication date: July 1, 2004
    Inventor: Martin Quibell
  • Publication number: 20040127424
    Abstract: Compounds of general formula (I): wherein R1, R2, Y, (X)o, (W)n, (V)m, Z and U are as defined in the specification, are inhibitors of cruzipain and other cysteine protease inhibitors and are useful as therapeutic agents, for example in Chagas' disease, or for validating therapeutic target compounds.
    Type: Application
    Filed: January 8, 2004
    Publication date: July 1, 2004
    Inventor: Martin Quibell
  • Publication number: 20040106805
    Abstract: Compounds of general formula (I): wherein R1, Y, (X)0, (W)n, (V)m, Z and U are as defined in the specification, are inhibitors of cruzipain and other cysteine protease inhibitors and are useful as therpeutic agents, for example in Chagas' disease, or for validating therapeutic target compounds.
    Type: Application
    Filed: January 8, 2004
    Publication date: June 3, 2004
    Inventors: Martin Quibell, Manoj Kumar Ramjee
  • Publication number: 20030203900
    Abstract: Cathepsin S is a highly active cysteine protease belonging to the papain superfamily. It is found mainly in lymph nodes, spleen, and macrophages and this limited occurrence suggests the potential involvement of this enzyme in the pathogenesis of degenerative disease. The invention relates to novel protease inhibitors, particularly inhibitors of the cysteine proteases of the papain superfamily and more particularly to Cathepsin S. The inhibitors are Furanone derivatives of Formula (II) which have a characteristic non-hydrogen substituent R5. They are selective over other members of the family and in particular show selectivity over other members of the Cathepsin family such as L and K.
    Type: Application
    Filed: November 16, 2001
    Publication date: October 30, 2003
    Inventors: Martin Quibell, Steven Taylor, Urszula Grabowska, Magnus Nilsson, Veronique Morisson
  • Publication number: 20030186962
    Abstract: of the formula (IV): 1
    Type: Application
    Filed: November 16, 2001
    Publication date: October 2, 2003
    Inventors: Martin Quibell, Steven Taylor, Urszula Grabowska, Magnus Nilsson, Veronique Morrison
  • Publication number: 20030092067
    Abstract: The present invention relates to the field of compounds which are substrates or inhibitors of proteolytic enzymes and to apparatus and methods for identifying substrates or inhibitors for proteolytic enzymes. We have devised a combinatorial method for the rapid identification of binding motifs which will greatly expedite the synthesis of inhibitors of a variety of proteolytic enzymes such as aspartyl proteases, serine proteases, metallo proteases and cysteinyl proteases.
    Type: Application
    Filed: September 30, 2002
    Publication date: May 15, 2003
    Applicant: PEPTIDE THERAPEUTICS LIMITED
    Inventors: Martin Quibell, Tony Johnson, Terance Hart
  • Patent number: 6528275
    Abstract: The present invention relates to the field of compounds which are substrates or inhibitors of proteolytic enzymes and to apparatus and methods for identifying substrates or inhibitors for proteolytic enzymes. We have devised a combinatorial method for the rapid indentification of binding motifs which will greatly expedite the synthesis of inhibitors of a variety of proteolytic enzymes such as aspartyl proteases, serine proteases, metallo proteases and cysteinyl proteases.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: March 4, 2003
    Assignee: Peptide Therapeutics Limited
    Inventors: Martin Quibell, Tony Johnson, Terance Hart
  • Patent number: 6372885
    Abstract: Method for preparing a combinatorial chemistry library of compounds of the formula R1—C(═O)—NH—R2, wherein R1 and R2 are as defined in the specification, which comprises acylating a combinatorial chemistry intermediate of the formula 1A wherein Y1, Y2, X, n, R1 and R2 are as defined in the specification to produce a compound of the formula wherein Y1, R1, R2 and X are as defined in the specification, followed by acidolytic cleavage of the resin bound linker to release the compound of the formula R1—C(═O)—NH—R2.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: April 16, 2002
    Assignee: Peptide Therapeutics Limited
    Inventors: Tony Johnson, Martin Quibell
  • Patent number: 6034066
    Abstract: The invention provides compounds for use in the treatment of allergic diseases including juvenile asthma and eczema. The compounds can inhibit IgE mediated reaction to major environmental and occupational allergens and can also have a prophylactic effect against allergic disease by preventing allergic sensitization to environmental and occupational allergens when administered to at-risk individuals (e.g., those at genetic risk of asthma and those exposed to occupational allergens in the workplace). The compounds are also useful for inactivation or attenuation of the allergenicity of allergens in situ. The invention provides compounds and ligands per se, pharmaceutical compositions containing the compounds, processes for producing the compounds and pharmaceutical compositions, and methods for using the compounds and compositions in treatment or prophylaxis of IgE mediated allergic diseases and in inactivation or attenuation of allergens in situ.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: March 7, 2000
    Assignee: Peptide Therapeutics Limited
    Inventors: Tony Johnson, Terrance Hart, Peter Laing, Farouk Shakib, Martin Quibell