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).
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Patent number: 11234987Abstract: 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: GrantFiled: July 31, 2019Date of Patent: February 1, 2022Assignees: Cancer Research Technology Limited, The Institute of Cancer Research, Vernalis (R&D) LimitedInventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Publication number: 20190358241Abstract: 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: ApplicationFiled: July 31, 2019Publication date: November 28, 2019Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Patent number: 10413550Abstract: 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: GrantFiled: June 23, 2017Date of Patent: September 17, 2019Assignees: The Institute of Cancer Research, Cancer Research Technology Limited, Vernalis (R&D) LimitedInventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Publication number: 20170326152Abstract: 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: ApplicationFiled: June 23, 2017Publication date: November 16, 2017Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Patent number: 9718793Abstract: 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: GrantFiled: June 27, 2013Date of Patent: August 1, 2017Assignees: Vernalis (R&D) Ltd., Cancer Research Technology Limited, The Institute of Cancer ResearchInventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Publication number: 20130289026Abstract: 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: ApplicationFiled: June 27, 2013Publication date: October 31, 2013Inventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Patent number: 8507480Abstract: 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: GrantFiled: February 19, 2010Date of Patent: August 13, 2013Assignees: Vernalis (R&D) Limited, Cancer Research Technology Limited, The Institute of Cancer ResearchInventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Patent number: 8450310Abstract: 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: GrantFiled: June 18, 2012Date of Patent: May 28, 2013Assignees: Vernalis (R&D) Limited, Cancer Research Technology Ltd., The Institute of Cancer ResearchInventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Patent number: 8367658Abstract: 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: GrantFiled: September 23, 2011Date of Patent: February 5, 2013Assignee: Cancer Research Technology LimitedInventors: 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
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Publication number: 20120252797Abstract: 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: ApplicationFiled: June 18, 2012Publication date: October 4, 2012Applicants: 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
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Publication number: 20120040967Abstract: 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: ApplicationFiled: September 23, 2011Publication date: February 16, 2012Applicant: CANCER RESEARCH TECHNOLOGY LIMITEDInventors: 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
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Patent number: 8058045Abstract: 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: GrantFiled: October 6, 2008Date of Patent: November 15, 2011Assignee: Cancer Research Technology LimitedInventors: 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
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Publication number: 20100311730Abstract: 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: ApplicationFiled: October 6, 2008Publication date: December 9, 2010Applicant: CANCER RESEARCH TECHNOLOGY LIMITEDInventors: 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
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Publication number: 20100179138Abstract: 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: ApplicationFiled: February 19, 2010Publication date: July 15, 2010Applicants: Vernalis (Cambridge) Limited, Cancer Research Technology Ltd., The Institute Of Cancer ResearchInventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Patent number: 7728016Abstract: 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: GrantFiled: June 24, 2004Date of Patent: June 1, 2010Assignees: Vernalis (Cambridge) Limited, Cancer Research Technology Ltd., Institute of Cancer ResearchInventors: Kwai Ming Cheung, Brian William Dymock, Edward McDonald, Martin James Drysdale
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Publication number: 20100120798Abstract: 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 claimsType: ApplicationFiled: December 20, 2007Publication date: May 13, 2010Applicants: ASTEX THERAPEUTICS LIMITED, CANCER RESEARCH TECHNOLOGY LIMITED, ASTRAZENECA AB, THE INSTITUTE OF CANCER RESEARCHInventors: 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
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Patent number: 7705027Abstract: 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); andType: GrantFiled: February 9, 2004Date of Patent: April 27, 2010Assignees: Vernalis (Cambridge) Limited, Cancer Research Technology Limited, Institute Of Cancer ResearchInventors: Martin James Drysdale, Brian William Dymock, Harry Finch, Paul Webb, Edward McDonald, Karen Elizabeth James, Kwai Ming Cheung, Thomas Peter Matthews
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Publication number: 20100093748Abstract: 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 moType: ApplicationFiled: December 21, 2007Publication date: April 15, 2010Applicants: ASTEX THERAPEUTICS LIMITED, THE INSTITUTE OF CANCER RESEARCH: ROYAL CANCER HOS, Cancer Research Technology LimitedInventors: 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
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Publication number: 20100016340Abstract: 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: ApplicationFiled: April 25, 2007Publication date: January 21, 2010Applicants: Astex Therapeutics Limited, The Institute of Cancer Research: Royal Cancer Hospital, Cancer Research Technology Limited, Astrazeneca ABInventors: 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
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Publication number: 20090124610Abstract: 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: ApplicationFiled: April 25, 2007Publication date: May 14, 2009Inventors: Gordon Saxty, Marinus Leendert Verdonk, John Caldwell, Ian Collins, Kwai-Ming Cheung, Tatiana Faria Da Fonseca McHardy