Patents by Inventor Kwai Ming Cheung

Kwai Ming Cheung 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: 11234987
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 1, 2022
    Assignees: Cancer Research Technology Limited, The Institute of Cancer Research, Vernalis (R&D) Limited
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Publication number: 20190358241
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Application
    Filed: July 31, 2019
    Publication date: November 28, 2019
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Patent number: 10413550
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is —O—, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: September 17, 2019
    Assignees: The Institute of Cancer Research, Cancer Research Technology Limited, Vernalis (R&D) Limited
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Publication number: 20170326152
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Application
    Filed: June 23, 2017
    Publication date: November 16, 2017
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Patent number: 9718793
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is —O—, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: August 1, 2017
    Assignees: Vernalis (R&D) Ltd., Cancer Research Technology Limited, The Institute of Cancer Research
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Publication number: 20130289026
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Application
    Filed: June 27, 2013
    Publication date: October 31, 2013
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Patent number: 8507480
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: August 13, 2013
    Assignees: Vernalis (R&D) Limited, Cancer Research Technology Limited, The Institute of Cancer Research
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Patent number: 8450310
    Abstract: Isoxazoles of formula (A) or (B) wherein R1 is a group of formula (IB) The isoxazoles are inhibitors of HSP90 activity, and useful for the treatment of, for example, cancers.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: May 28, 2013
    Assignees: Vernalis (R&D) Limited, Cancer Research Technology Ltd., The Institute of Cancer Research
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Patent number: 8367658
    Abstract: The present invention pertains generally to the field of therapeutic compounds, and more specifically to certain biarylamine compounds (referred to herein as BAA compounds), and especially certain pyrazin-2-yl-pyridin-2-yl-amine and pyrazine-2-yl-pyrimidin-4-yl-amine compounds, which, inter alia, inhibit Checkpoint Kinase 1 (CHK1) kinase function. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit CHK1 kinase function, and in the treatment of diseases and conditions that are mediated by CHK1, that are ameliorated by the inhibition of CHK1 kinase function, etc., including proliferative conditions such as cancer, etc., optionally in combination with another agent, for example, (a) a DNA topoisomerase I or II inhibitor; (b) a DNA damaging agent; (c) an antimetabolite or TS inhibitor; (d) a microtubule targeted agent; and (e) ionising radiation.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 5, 2013
    Assignee: Cancer Research Technology Limited
    Inventors: Ian Collins, John Charles Reader, Thomas Peter Matthews, Kwai Ming Cheung, Nicolas Proisy, David Hugh Williams, Sukhbinder Singh Klair, Jane Elizabeth Scanlon, Nelly Piton, Glynn Jonathan Addison, Michael Cherry
  • Publication number: 20120252797
    Abstract: Isoxazoles of formula (A) or (B) wherein R1 is a group of formula (IB) The isoxazoles are inhibitors of HSP90 activity, and useful for the treatment of, for example, cancers.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 4, 2012
    Applicants: Vernalis (Cambridge) Limited, The Institute of Cancer Research, Cancer Research Technology Ltd.
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Publication number: 20120040967
    Abstract: The present invention pertains generally to the field of therapeutic compounds, and more specifically to certain biarylamine compounds (referred to herein as BAA compounds), and especially certain pyrazin-2-yl-pyridin-2-yl-amine and pyrazine-2-yl-pyrimidin-4-yl-amine compounds, which, inter alia, inhibit Checkpoint Kinase 1 (CHK1) kinase function. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit CHK1 kinase function, and in the treatment of diseases and conditions that are mediated by CHK1, that are ameliorated by the inhibition of CHK1 kinase function, etc., including proliferative conditions such as cancer, etc., optionally in combination with another agent, for example, (a) a DNA topoisomerase I or II inhibitor; (b) a DNA damaging agent; (c) an antimetabolite or TS inhibitor; (d) a microtubule targeted agent; and (e) ionising radiation.
    Type: Application
    Filed: September 23, 2011
    Publication date: February 16, 2012
    Applicant: CANCER RESEARCH TECHNOLOGY LIMITED
    Inventors: Ian Collins, John Charles Reader, Thomas Peter Matthews, Kwai Ming Cheung, Nicolas Proisy, David Hugh Williams, Sukhbinder Singh Klair, Jane Elizabeth Scanlon, Nelly Piton, Glynn Jonathan Addison, Michael Cherry
  • Patent number: 8058045
    Abstract: The present invention pertains generally to the field of therapeutic compounds, and more specifically to certain biarylamine compounds (referred to herein as BAA compounds), and especially certain pyrazin-2-yl-pyridin-2-yl-amine and pyrazine-2-yl-pyrimidin-4-yl-amine compounds of formula (I), which, inter alia, inhibit Checkpoint Kinase 1 (CHK1) kinase function. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit CHK1 kinase function, and in the treatment of diseases and conditions that are mediated by CHK1, that are ameliorated by the inhibition of CHK1 kinase function, etc., including proliferative conditions such as cancer, etc.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: November 15, 2011
    Assignee: Cancer Research Technology Limited
    Inventors: Ian Collins, John Charles Reader, Thomas Peter Matthews, Kwai Ming Cheung, Nicolas Proisy, David Hugh Williams, Sukhbinder Singh Klair, Jane Elizabeth Scanlon, Nelly Piton, Glynn Jonathan Addison, Michael Cherry
  • Publication number: 20100311730
    Abstract: The present invention pertains generally to the field of therapeutic compounds, and more specifically to certain biarylamine compounds (referred to herein as BAA compounds), and especially certain pyrazin-2-yl-pyridin-2-yl-amine and pyrazine-2-yl-pyrimidin-4-yl-amine compounds of formula (I), which, inter alia, inhibit Checkpoint Kinase 1 (CHK1) kinase function. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, to inhibit CHK1 kinase function, and in the treatment of diseases and conditions that are mediated by CHK1, that are ameliorated by the inhibition of CHK1 kinase function, etc., including proliferative conditions such as cancer, etc., optionally in combination with another agent, for example, (a) a DNA topoisomerase I or II inhibitor; (b) a DNA damaging agent; (c) an antimetabolite or TS inhibitor; (d) a microtubule targeted agent; and (e) ionisi?q radiation.
    Type: Application
    Filed: October 6, 2008
    Publication date: December 9, 2010
    Applicant: CANCER RESEARCH TECHNOLOGY LIMITED
    Inventors: Ian Collins, John Charles Reader, Thomas Peter Matthews, Kwai Ming Cheung, Nicolas Proisy, David Hugh Williams, Sukhbinder Singh Klair, Jane Elizabeth Scanlon, Nelly Piton, Glynn Jonathan Addison, Michael Cherry
  • Publication number: 20100179138
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C?O)—, —(C?S)—, —SO.sub.
    Type: Application
    Filed: February 19, 2010
    Publication date: July 15, 2010
    Applicants: Vernalis (Cambridge) Limited, Cancer Research Technology Ltd., The Institute Of Cancer Research
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Patent number: 7728016
    Abstract: Compound of a compound of formula (I) or a salt, N-oxide, hydrate or solvate thereof, in the preparation of a composition for inhibition of HSP90 activity: wherein ring A is an aromatic or non-aromatic carbocyclic or heterocyclic ring having 5 ring atoms, for example 1,2,3-triazolyl or a 1,2,4-triazolyl or a tetrazolyl ring; and R1 R2 R3 are as defined in the specification are inhibitors of HSP90 and therefore of use in the treatment of, for example, cancers, viral disease, inflammatory diseases such as rheumatoid arthritis, asthma, multiple sclerosis, Type I diabetes, lupus, psoriasis and inflammatory bowel disease; cystic fibrosis angiogenesis-related disease such as diabetic retinopathy, haemangiomas, and endometriosis; or for protection of normal cells against chemotherapy-induced toxicity; or diseases where failure to undergo apoptosis is an underlying factor, or protection from hypoxia-ischemic injury due to elevation of Hsp70 in the heart and brain; scrapie/CJD, Huntingdon's and Alzheimer's disease.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: June 1, 2010
    Assignees: Vernalis (Cambridge) Limited, Cancer Research Technology Ltd., Institute of Cancer Research
    Inventors: Kwai Ming Cheung, Brian William Dymock, Edward McDonald, Martin James Drysdale
  • Publication number: 20100120798
    Abstract: The invention provides compounds of the formula (I) having PKA and PKB kinase inhibiting compounds of the formula (I): GP 1 J T 2 J N 4 R N H (I) or salts, solvates, tautomers or N-oxides thereof, wherein (1) GP is a group GP1: HET 2a a Q G (HNCO)f 7 (R)x N * (GP1) (2) GP is a group GP2: 10 (R)r O 2a a QG (CH2)w N V H N * (GP2) wherein HET is a monocyclic or bicyclic heterocyclic group containing up to 4 heteroatom ring members; the ring V is a monocyclic or bicyclic heteroaryl group of 5 to 10 ring members; and J1, J2, R4, R7, R10, Q2a, Ga, x, w and f are as defined in the claims
    Type: Application
    Filed: December 20, 2007
    Publication date: May 13, 2010
    Applicants: ASTEX THERAPEUTICS LIMITED, CANCER RESEARCH TECHNOLOGY LIMITED, ASTRAZENECA AB, THE INSTITUTE OF CANCER RESEARCH
    Inventors: Steven John Woodhead, Christopher Hamlett, Marinus Leendert Verdonk, Hannah Fiona Sore, David Winter Walker, Ian Collins, Kwai Ming Cheung, John Caldwell, Tatiana Faria Da Fonseca McHardy, Richard William Arthur Luke, Zbigniew Stanley Matusiak, Gregory Richard Carr, Jeffrey James Morris
  • Patent number: 7705027
    Abstract: Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers: (A), (B) wherein R1, is a group of formula (IA): —Ar1-(Alk1)p-(Z)r-(Alk2)s-Q, wherein in any compatible combination Ar1 is an optionally substituted aryl or heteroaryl radical, Alk1 and Alk2 are optionally substituted divalent C1-C6 alkylene or C2-C6 alkenylene radicals, p, r and s are independently 0 or 1, Z is —O—, —S—, —(C?O)—, —(C?S)—, —SO2—, —C(?O)O—, —C(?O)NRA—, —C(?S)NRA—, —SO2NRA—, —NRAC(?O)—, —NRASO2— or —NRA— wherein RA is hydrogen or C1-C6 alkyl, and Q is hydrogen or an optionally substituted carbocyclic or heterocyclic radical; R2 is (i) a group of formula (IA) above or (ii) a carboxamide radical; or (iii) a non aromatic carbocyclic or heterocyclic ring wherein a ring carbon is optionally substituted, and/or a ring nitrogen is optionally substituted by a group of formula -(Alk1)p-(Z)r-(Alk2)s-Q wherein Q, Alk1, Alk2, Z, p, r and s are as defined above in relation to group (IA); and
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: April 27, 2010
    Assignees: Vernalis (Cambridge) Limited, Cancer Research Technology Limited, Institute Of Cancer Research
    Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
  • Publication number: 20100093748
    Abstract: The invention provides PKA and PKB kinase-inhibiting compounds of the formula (I): or salts, solvates, tautomers or N-oxides thereof, wherein E is a five membered heteroaryl ring containing 1, 2, 3 or 4 heteroatoms selected from O, N and S provided that no more than 1 heteroatom may be other than N; q and r are each is 0 or 1; provided that q+r is 1 or 2; T is N or a group CR5; J1-J2 is N?C(R6), (R7)C?N, (R8)N—C(O), (R8)2C—C(O), N?N or (R7)C?C(R6); Q3 is a bond or a saturated C1-3 hydrocarbon linker group optionally substituted by fluorine and hydroxy; G is NR2R3, CN or OH; m and n are each 0 or 1, provided that m+n is 1 or 2, and provided also that m or n are each 0 when the adjacent ring member of ring E is S or O; R1a and R1b are the same or different and each is hydrogen or a substituent R10; or R1a and R1b together with the carbon atoms or heteroatoms to which they are attached form a 5 or 6-membered aryl or heteroaryl ring, wherein the aryl or heteroaryl rings are optionally substituted by one or mo
    Type: Application
    Filed: December 21, 2007
    Publication date: April 15, 2010
    Applicants: ASTEX THERAPEUTICS LIMITED, THE INSTITUTE OF CANCER RESEARCH: ROYAL CANCER HOS, Cancer Research Technology Limited
    Inventors: Steven John Woodhead, Martyn Frederickson, Christopher Hamlett, Andrew James Woodhead, Marinus Leendert Verdonk, Hannah Fiona Sore, David Winter Walker, Peter Blurton, Ian Collins, Kwai Ming Cheung, John Caldwell, Tatiana Faria Da Fonseca McHardy, Richard William Arthur Luke, Zbigniew Stanley Matusiak, Andrew Leach, Jeffrey James Morris
  • Publication number: 20100016340
    Abstract: The invention provides compounds of the formula (I): or salts, solvates, tautomers or N-oxides thereof, wherein J1-J2 is CH?CH, N?CH, CH?N, HN—C(O) or CH2CO; T is N or CH and GP is as defined in the claims. The compounds have activity as inhibitors of PKA and PKB kinases and are useful in the treatment of cancers.
    Type: Application
    Filed: April 25, 2007
    Publication date: January 21, 2010
    Applicants: Astex Therapeutics Limited, The Institute of Cancer Research: Royal Cancer Hospital, Cancer Research Technology Limited, Astrazeneca AB
    Inventors: Steven John Woodhead, Christopher Hamlett, Hannah Fiona Sore, David Winter Walker, Marinus Leendert Verdonk, Ian Collins, John Caldwell, Kwai-Ming Cheung, Tatiana Faria Da Fonseca McHardy
  • Publication number: 20090124610
    Abstract: Compounds of the formula (I), and salts, solvates, tautomers and N-oxide thereof, wherein TG is selected from groups (1) and (2): wherein the asterisk (*) represents the point of attachment of the group E to the group X; R1a is an optionally substituted aryl or heteroaryl group; R1b is hydrogen or a group R1a; X is an optionally substituted bicyclic heterocyclic group having 8 to 12 ring members of which up to 5 are heteroatoms selected from O, N and S; and A, E, R2, R3, R4, Q1 and Q2 are as defined in the claims; provided that when E is aryl or heteroaryl, then Q2 is other than a bond; and further provided that the moiety (a) is other than a group (BG1) or (BG2); wherein (BG1) and (BG2) are each optionally substituted; T is N or CRZ; J1-J2 is selected from N?C(RZ), (RZ)C?N, (RZ)N—C(O), (RZ)2C—C(O), N?N and (RZ)C?C(R6); J4-J3 is a group N?C(RZ) or a group (RZ)N—CO; and RZ is hydrogen or a substituent.
    Type: Application
    Filed: April 25, 2007
    Publication date: May 14, 2009
    Inventors: Gordon Saxty, Marinus Leendert Verdonk, John Caldwell, Ian Collins, Kwai-Ming Cheung, Tatiana Faria Da Fonseca McHardy