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).

  • Publication number: 20170305943
    Abstract: Compounds and methods are provided for treating bacterial infections.
    Type: Application
    Filed: May 21, 2015
    Publication date: October 26, 2017
    Applicant: 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
  • Publication number: 20170007615
    Abstract: 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: Application
    Filed: February 3, 2015
    Publication date: January 12, 2017
    Inventors: Ian Collins, David John Haydon, Helena Thomaides-Brears, James T Palmer, Christopher James Lunniss
  • Patent number: 9511073
    Abstract: 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: Grant
    Filed: April 20, 2012
    Date of Patent: December 6, 2016
    Assignee: 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
  • Publication number: 20150191420
    Abstract: 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: Application
    Filed: August 18, 2014
    Publication date: July 9, 2015
    Inventors: David Ryall Brown, Ian Collins, Lloyd George Czaplewski, David John Haydon
  • Patent number: 8865736
    Abstract: 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: Grant
    Filed: November 28, 2011
    Date of Patent: October 21, 2014
    Assignee: Biota Scientific Pty Ltd
    Inventors: David Ryall Brown, Ian Collins, Lloyd George Czaplewski, David John Haydon
  • Publication number: 20140135332
    Abstract: 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: Application
    Filed: April 20, 2012
    Publication date: May 15, 2014
    Applicant: BIOTA SCIENTIFIC MANAGEMENT PTY LTD
    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
  • Patent number: 8492414
    Abstract: 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: Grant
    Filed: September 22, 2008
    Date of Patent: July 23, 2013
    Assignee: Biota Scientific Management Pty Ltd
    Inventors: David John Haydon, Ian Collins, Lloyd George Czaplewski
  • Patent number: 8481544
    Abstract: 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: Grant
    Filed: June 7, 2011
    Date of Patent: July 9, 2013
    Assignee: Biota Europe Limited
    Inventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
  • Patent number: 8415383
    Abstract: 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; R
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: April 9, 2013
    Assignee: Biota Scientific Management Pty Ltd
    Inventors: David John Haydon, Ian Collins, Lloyd George Czaplewski
  • Patent number: 8389516
    Abstract: 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: Grant
    Filed: June 7, 2011
    Date of Patent: March 5, 2013
    Assignee: Biota Europe Limited
    Inventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
  • Patent number: 8299065
    Abstract: 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 ra
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: October 30, 2012
    Assignee: Biota Europe Ltd.
    Inventors: David John Haydon, Lloyd George Czaplewski
  • Publication number: 20120122918
    Abstract: 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: Application
    Filed: November 28, 2011
    Publication date: May 17, 2012
    Applicant: BIOTA SCIENTIFIC MANAGEMENT PTY LTD
    Inventors: David Ryall BROWN, Ian COLLINS, Lloyd George CZAPLEWSKI, David John HAYDON
  • Publication number: 20120004221
    Abstract: 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: Application
    Filed: June 7, 2011
    Publication date: January 5, 2012
    Applicant: Biota Europe Limited
    Inventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
  • Patent number: 8088791
    Abstract: 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, nit
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: January 3, 2012
    Assignee: Biots Scientific Management Pty Ltd
    Inventors: David Ryall Brown, Ian Collins, Lloyd George Czaplewski, David John Haydon
  • Publication number: 20110263590
    Abstract: 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: Application
    Filed: June 7, 2011
    Publication date: October 27, 2011
    Applicant: Biota Europe Limited
    Inventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
  • Patent number: 7977340
    Abstract: 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: Grant
    Filed: June 21, 2007
    Date of Patent: July 12, 2011
    Assignee: Prolysis Ltd.
    Inventors: David John Haydon, Lloyd George Czaplewski, Nicholas John Palmer, Dale Robert Mitchell, John Frederick Atherall, Christopher Richard Steele, Tamara Ladduwahetty
  • Publication number: 20100311766
    Abstract: 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: Application
    Filed: December 12, 2008
    Publication date: December 9, 2010
    Applicant: BIOTA EUROPE LTD
    Inventors: David John Haydon, Lloyd George Czaplewski
  • Publication number: 20100305067
    Abstract: 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 ra
    Type: Application
    Filed: December 12, 2008
    Publication date: December 2, 2010
    Applicant: BIOTA EUROPE LTD
    Inventors: David John Haydon, Lloyd George Czaplewski
  • Publication number: 20100298388
    Abstract: 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; R
    Type: Application
    Filed: September 22, 2008
    Publication date: November 25, 2010
    Applicant: BIOTA EUROPE LTD.
    Inventors: David John Haydon, Ian Collins, Lloyd George Czaplewski
  • Publication number: 20100273837
    Abstract: 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: Application
    Filed: September 22, 2008
    Publication date: October 28, 2010
    Applicant: BIOTA EUROPE LTD.
    Inventors: David John Haydon, Ian Collins, Lloyd George Czaplewski