Patents by Inventor David John Haydon
David John Haydon 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: 20170305943Abstract: Compounds and methods are provided for treating bacterial infections.Type: ApplicationFiled: May 21, 2015Publication date: October 26, 2017Applicant: TAXIS Pharmaceuticals, Inc.Inventors: David Ryall Brown, Ian Collins, Lloyd George Czaplewski, David John Haydon, Penelope Anne Mayes, Jeffrey Peter Mitchell, James T Palmer, Neil Robert Stokes
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Publication number: 20170007615Abstract: The present disclosure relates to a novel combination of compounds, their use as antibacterials, compositions comprising them and methods for treating or preventing bacterial infections, more particularly, bacterial infections caused by Gram-negative pathogens and/or drug resistant Gram-negative bacteria.Type: ApplicationFiled: February 3, 2015Publication date: January 12, 2017Inventors: Ian Collins, David John Haydon, Helena Thomaides-Brears, James T Palmer, Christopher James Lunniss
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Patent number: 9511073Abstract: The present invention provides compounds of Formula (I): and salts, racemates, isomers, diastereoisomers, enantiomers, hydrates, solvates, N-oxides, pharmaceutically acceptable derivatives or prodrugs thereof. Also provided the use of these compounds as antibacterials, compositions comprising them and processes for their manufacture.Type: GrantFiled: April 20, 2012Date of Patent: December 6, 2016Assignee: TAXIS Pharmaceuticals, Inc.Inventors: David John Haydon, Lloyd George Czaplewski, Neil Robert Stokes, David Davies, Ian Collins, James T. Palmer, Jeffrey Peter Mitchell, Gary Robert William Pitt, Daniel Offermann
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Publication number: 20150191420Abstract: Compounds of formula (I) have antibacterial activity: wherein R represents hydrogen or 1, 2 or 3 optional substituents; W is ?C(R1)—; R1 is hydrogen and R2 is hydrogen, methyl, or fluorine; or R1 and R2 taken together are —CH2—, —CH2CH2, —O—, or, in either orientation, —O—CH2— or —OCH2CH2—; and R3 is a radical of formula (Alk1)m-(Z)p-(Alk2)n-Q.Type: ApplicationFiled: August 18, 2014Publication date: July 9, 2015Inventors: David Ryall Brown, Ian Collins, Lloyd George Czaplewski, David John Haydon
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Patent number: 8865736Abstract: Compounds of formula (I) have antibacterial activity: wherein R represents hydrogen or 1, 2 or 3 optional substituents; W is ?C(R1)—; R1 is hydrogen and R2 is hydrogen, methyl, or fluorine; or R1 and R2 taken together are —CH2—, —CH2CH2, —O—, or, in either orientation, —O—CH2— or —OCH2CH2—; and R3 is a radical of formula -(Alk1)m-(Z)p-(Alk2)n-Q.Type: GrantFiled: November 28, 2011Date of Patent: October 21, 2014Assignee: Biota Scientific Pty LtdInventors: David Ryall Brown, Ian Collins, Lloyd George Czaplewski, David John Haydon
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Publication number: 20140135332Abstract: The present invention provides compounds of Formula (I): and salts, racemates, isomers, diastereoisomers, enantiomers, hydrates, solvates, N-oxides, pharmaceutically acceptable derivatives or prodrugs thereof. Also provided the use of these compounds as antibacterials, compositions comprising them and processes for their manufacture.Type: ApplicationFiled: April 20, 2012Publication date: May 15, 2014Applicant: BIOTA SCIENTIFIC MANAGEMENT PTY LTDInventors: David John Haydon, Lloyd George Czaplewski, Neil Robert Stokes, David Davies, Ian Collins, James T Palmer, Jeffrey Peter Mitchell, Gary Robert William Pitt, Daniel Offermann
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Patent number: 8492414Abstract: Compounds of formula (IA) or (IB) have antibacterial activity: wherein W is ?CH— or ?N—; Ri and R2 are independently selected from hydrogen, fluoro and chloro, provided that Ri and R2 are not each hydrogen when W is ?CH—; n is 0 or 1; X is —O—, —S—, or —CH2—; and Q is (i) a phenyl radical, a naphthyl radical, a monocyclic carbocyclic or heteroaryl radical having 3 to 6 ring atoms, or a bicyclic heteroaryl radical having 5 to 10 ring atoms, any of which radicals being optionally substituted; or (ii) an optionally substituted C1-C6 alkyl, C2-C6 alkenyl, or C2-C6 alkynyl radical, which may optionally be interrupted by —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, —N(CH2CH3)—, —C—K?Oh or —C(?O)—O—.Type: GrantFiled: September 22, 2008Date of Patent: July 23, 2013Assignee: Biota Scientific Management Pty LtdInventors: David John Haydon, Ian Collins, Lloyd George Czaplewski
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Patent number: 8481544Abstract: Compounds of formula (I) have antibacterial activity: wherein: m is 0 or 1; Q is hydrogen or cyclopropyl; Alk is an optionally substituted, divalent C1-C6 alkylene, alkenylene or alkynylene radical which may contain an ether (—O—), thioether (—S—) or amino (—NR)— link, wherein R is hydrogen, —CN or C1-C3 alkyl; X is —C(?O)NR6—, —S(O)NR6—, —C(?O)O— or —S(?O)O— wherein R6 is hydrogen, optionally substituted C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, -Cyc, or —(C1-C3 alkyl)-Cyc wherein Cyc is optionally substituted monocyclic carbocyclic or heterocyclic having 3-7 ring atoms; Z is N; R2 and R3 are as defined in the description.Type: GrantFiled: June 7, 2011Date of Patent: July 9, 2013Assignee: Biota Europe LimitedInventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
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Patent number: 8415383Abstract: Compounds of formula (IA) or (IB) have antibacterial activity: wherein W is ?C(H)— or ?N—; R3 is a radical of formula -(Alk1)m-(Z1)p-(Alk2)n-Q wherein m, p and n are independently 0 or 1, provided that at least one of m, p and n is 1, Z1 is —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, —N(CH2CH3)—, —C(—O)—, —0—(C?O)—, —C(?O)—O—, or an optionally substituted divalent monocyclic carbocyclic or heterocyclic radical having 3 to 6 ring atoms; or an optionally substituted divalent bicyclic carbocyclic or heterocyclic radical having 5 to 10 ring atoms; Alk1 and Alk2 are optionally substituted C1-C6 alkylene, C2-C6 alkenylene, or C2-C6 alkynylene radicals, which may optionally terminate with or be interrupted by —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, Or —N(CH2CH3)—; and Q is hydrogen, halogen, nitrile, or hydroxyl, or an optionally substituted monocyclic carbocyclic or heterocyclic radical having 3 to 6 ring atoms; or an optionally substituted bicyclic carbocyclic or heterocyclic radical having 5 to 10 ring atoms; RType: GrantFiled: September 22, 2008Date of Patent: April 9, 2013Assignee: Biota Scientific Management Pty LtdInventors: David John Haydon, Ian Collins, Lloyd George Czaplewski
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Patent number: 8389516Abstract: Compounds of formula (I) have antibacterial activity: wherein: m is 0 or 1; Q is hydrogen or cyclopropyl; Alk is an optionally substituted, divalent C1-C6 alkylene, alkenylene or alkynylene radical which may contain an ether (—O—), thioether (—S—) or amino (—NR)— link, wherein R is hydrogen, —CN or C1-C3 alkyl; X is —C(?O)NR6—, —S(O)NR6—, —C(?O)O— or —S(?O)O— wherein R6 is hydrogen, optionally substituted C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, -Cyc, or —(C1-C3 alkyl)-Cyc wherein Cyc is optionally substituted monocyclic carbocyclic or heterocyclic having 3-7 ring atoms; Z is N or CH, or CF; R2 and R3 are as defined in the description.Type: GrantFiled: June 7, 2011Date of Patent: March 5, 2013Assignee: Biota Europe LimitedInventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
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Patent number: 8299065Abstract: Compound of formula (I) have antibacterial activity: wherein: m is 0 or 1; Q is hydrogen or cyclopropyl; AIk is an optionally substituted, divalent C1-C6 alkylene, alkenylene or alkynylene radical which may contain an ether (—O—), thioether (—S—) or amino (—NR)— link, wherein R is hydrogen, —CN or C1-C3 alkyl; X is —C(?O)NR6—, or —C(?O)O— wherein R6 is hydrogen, optionally substituted C1-C6 alkyl, C2-C6 alkenyl or C2-C6 alkynyl; Z1 is —N? or —CH?Z2 is —N? or —C(R1)?; R1 is hydrogen, methyl, ethyl, ethenyl, ethynyl, methoxy, mercapto, mercaptomethyl, halo, fully or partially fluorinated (C1-C2)alkyl, (C1-C2JaIkoxy or (C1-C2)alkylthio, nitro, or nitrile (—CN); R2 is a group Q1-[Alk1]q-Q2-, wherein q is 0 or 1; AIk1 is an optionally substituted, divalent, straight chain or branched C1-C6 alkylene, or C2-C6 alkenylene or C2-C6 alkynylene radical which may contain or terminate in an ether (—O—), thioether (—S—) or amino (—NR)— link; Q2 is an optionally substituted divalent monocyclic carbocyclic or heterocyclic raType: GrantFiled: December 12, 2008Date of Patent: October 30, 2012Assignee: Biota Europe Ltd.Inventors: David John Haydon, Lloyd George Czaplewski
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Publication number: 20120122918Abstract: Compounds of formula (1) have antibacterial activity: wherein R represents hydrogen or 1, 2 or 3 optional substituents; W is ?C(R1)—; R1 is hydrogen and R2 is hydrogen, methyl, or fluorine; or R1 and R2 taken together are —CH2—, —CH2CH2, —O—, or, in either orientation, —O—CH2— or —OCH2CH2—; and R3 is a radical of formula -(Alk1)m-(Z)p-(Alk2)-Q.Type: ApplicationFiled: November 28, 2011Publication date: May 17, 2012Applicant: BIOTA SCIENTIFIC MANAGEMENT PTY LTDInventors: David Ryall BROWN, Ian COLLINS, Lloyd George CZAPLEWSKI, David John HAYDON
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Publication number: 20120004221Abstract: Compounds of formula (I) have antibacterial activity: wherein: m is 0 or 1; Q is hydrogen or cyclopropyl; Alk is an optionally substituted, divalent C1-C6 alkylene, alkenylene or alkynylene radical which may contain an ether (—O—), thioether (—S—) or amino (—NR)— link, wherein R is hydrogen, —CN or C1-C3 alkyl; X is —C(?O)NR6—, —S(O)NR6—, —C(?O)O— or —S(?O)O— wherein R6 is hydrogen, optionally substituted C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, -Cyc, or —(C1-C3 alkyl)-Cyc wherein Cyc is optionally substituted monocyclic carbocyclic or heterocyclic having 3-7 ring atoms; Z is N; R2 and R3 are as defined in the description.Type: ApplicationFiled: June 7, 2011Publication date: January 5, 2012Applicant: Biota Europe LimitedInventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
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Patent number: 8088791Abstract: Compounds of formula (I) have antibacterial activity: wherein R represents hydrogen or 1, 2 or 3 optional substituents; W is ?C(R1)— or ?N—; R1 is hydrogen or an optional substituent and R2 is hydrogen, methyl, or fluorine; or R1 and R2 taken together are —CH2—, —CH2CH2—, —O—, or, in either orientation, —O—CH2— or —OCH2CH2—; R3 is a radical of formula -(Alk1)m-(Z)p-(Alk2)n-Q wherein m, p and n are independently 0 or 1, provided that at least one of m, p and n is 1, Z is —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, —N(CH2CH3)—, —C(?O)—, —O—(C?O)—, —C(?O)—O—, or an optionally substituted divalent monocyclic carbocyclic or heterocyclic radical having 3 to 6 ring atoms; or an optionally substituted divalent bicyclic heterocyclic radical having 5 to 10 ring atoms; Alk1 and Alk2 are optionally substituted C1-C6 alkylene, C2-C6 alkenylene, or C2-C6 alkynylene radicals, which may optionally terminate with or be interrupted by —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, or —N(CH2CH3)—; and Q is hydrogen, halogen, nitType: GrantFiled: March 22, 2007Date of Patent: January 3, 2012Assignee: Biots Scientific Management Pty LtdInventors: David Ryall Brown, Ian Collins, Lloyd George Czaplewski, David John Haydon
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Publication number: 20110263590Abstract: Compounds of formula (I) have antibacterial activity: wherein: m is 0 or 1; Q is hydrogen or cyclopropyl; Alk is an optionally substituted, divalent C1-C6 alkylene, alkenylene or alkynylene radical which may contain an ether (—O—), thioether (—S—) or amino (—NR)— link, wherein R is hydrogen, —CN or C1-C3 alkyl; X is —C(?O)NR6—, —S(O)NR6—, —C(?O)O— or —S(?O)O— wherein R6 is hydrogen, optionally substituted C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, -Cyc, or —(C1-C3 alkyl)-Cyc wherein Cyc is optionally substituted monocyclic carbocyclic or heterocyclic having 3-7 ring atoms; Z is N or CH, or CF; R2 and R3 are as defined in the description.Type: ApplicationFiled: June 7, 2011Publication date: October 27, 2011Applicant: Biota Europe LimitedInventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
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Patent number: 7977340Abstract: Compounds of formula (I) have antibacterial activity: wherein: m is 0 or 1; Q is hydrogen or cyclopropyl; AIk is an optionally substituted, divalent C1-C6 alkylene, alkenylene or alkynylene radical which may contain an ether (—O—), thioether (—S—) or amino (—NR)— link, wherein R is hydrogen, —CN or C1-C3 alkyl; X is —C(?O)NR6—, —S(O)NR6—, —C(?O)O— or —S(?O)O— wherein R6 is hydrogen, optionally substituted C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, -Cyc, or —(C1-C3 alkyl)-Cyc wherein Cyc is optionally substituted monocyclic carbocyclic or heterocyclic having 3-7 ring atoms; Z is N or CH, or CF; R2 and R3 are as defined in the description.Type: GrantFiled: June 21, 2007Date of Patent: July 12, 2011Assignee: Prolysis Ltd.Inventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
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Publication number: 20100311766Abstract: Compounds of formula (I) have antibacterial activity wherein: m is O or 1; Q is hydrogen or cyclopropyl; AIk is an optionally substituted, divalent C1-C3 alkylene, C2-C3 alkenylene or C2-C3 alkynylene radical; X is —C(?O)NH— or —C(?O)O—; R2 and R3 are as defined in the specification.Type: ApplicationFiled: December 12, 2008Publication date: December 9, 2010Applicant: BIOTA EUROPE LTDInventors: David John Haydon, Lloyd George Czaplewski
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Publication number: 20100305067Abstract: Compound of formula (I) have antibacterial activity: wherein: m is 0 or 1; Q is hydrogen or cyclopropyl; AIk is an optionally substituted, divalent C1-C6 alkylene, alkenylene or alkynylene radical which may contain an ether (—O—), thioether (—S—) or amino (—NR)— link, wherein R is hydrogen, —CN or C1-C3 alkyl; X is —C(?O)NR6—, or —C(?O)O— wherein R6 is hydrogen, optionally substituted C1-C6 alkyl, C2-C6 alkenyl or C2-C6 alkynyl; Z1 is —N? or —CH?Z2 is —N? or —C(R1)?; R1 is hydrogen, methyl, ethyl, ethenyl, ethynyl, methoxy, mercapto, mercaptomethyl, halo, fully or partially fluorinated (C1-C2)alkyl, (C1-C2Jalkoxy or (C1-C2)alkylthio, nitro, or nitrile (—CN); R2 is a group Q1-[Alk1]q-Q2-, wherein q is 0 or 1; AIk1 is an optionally substituted, divalent, straight chain or branched C1-C6 alkylene, or C2-C6 alkenylene or C2-C6 alkynylene radical which may contain or terminate in an ether (—O—), thioether (—S—) or amino (—NR)— link; Q2 is an optionally substituted divalent monocyclic carbocyclic or heterocyclic raType: ApplicationFiled: December 12, 2008Publication date: December 2, 2010Applicant: BIOTA EUROPE LTDInventors: David John Haydon, Lloyd George Czaplewski
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Publication number: 20100298388Abstract: Compounds of formula (IA) or (IB) have antibacterial activity: wherein W is ?C(H)— or ?N—; R3 is a radical of formula -(Alk1)m-(Z1)p-(Alk2)n-Q wherein m, p and n are independently 0 or 1, provided that at least one of m, p and n is 1, Z1 is —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, —N(CH2CH3)—, —C(—O)—, —O—(C?O)—, —C(?O)—O—, or an optionally substituted divalent monocyclic carbocyclic or heterocyclic radical having 3 to 6 ring atoms; or an optionally substituted divalent bicyclic carbocyclic or heterocyclic radical having 5 to 10 ring atoms; Alk1 and Alk2 are optionally substituted C1-C6 alkylene, C2-C6 alkenylene, or C2-C6 alkynylene radicals, which may optionally terminate with or be interrupted by —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, Or —N(CH2CH3)—; and Q is hydrogen, halogen, nitrile, or hydroxyl, or an optionally substituted monocyclic carbocyclic or heterocyclic radical having 3 to 6 ring atoms; or an optionally substituted bicyclic carbocyclic or heterocyclic radical having 5 to 10 ring atoms; RType: ApplicationFiled: September 22, 2008Publication date: November 25, 2010Applicant: BIOTA EUROPE LTD.Inventors: David John Haydon, Ian Collins, Lloyd George Czaplewski
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Publication number: 20100273837Abstract: Compounds of formula (IA) or (IB) have antibacterial activity: wherein W is ?CH— or ?N—; Ri and R2 are independently selected from hydrogen, fluoro and chloro, provided that Ri and R2 are not each hydrogen when W is ?CH—; n is 0 or 1; X is —O—, —S—, or —CH2—; and Q is (i) a phenyl radical, a naphthyl radical, a monocyclic carbocyclic or heteroaryl radical having 3 to 6 ring atoms, or a bicyclic heteroaryl radical having 5 to 10 ring atoms, any of which radicals being optionally substituted; or (ii) an optionally substituted C1-C6 alkyl, C2-C6 alkenyl, or C2-C6 alkynyl radical, which may optionally be interrupted by —O—, —S—, —S(O)—, —S(O2)—, —NH—, —N(CH3)—, —N(CH2CH3)—, —C—K?Oh or —C(?O)—O—.Type: ApplicationFiled: September 22, 2008Publication date: October 28, 2010Applicant: BIOTA EUROPE LTD.Inventors: David John Haydon, Ian Collins, Lloyd George Czaplewski