Patents by Inventor David L. Burgoyne
David L. Burgoyne 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: 11976052Abstract: Provided are specific leukotriene synthesis inhibitor compounds and pharmaceutical compositions comprising the compounds and methods of using the compounds and the pharmaceutical compositions in treating, for example, inflammatory diseases or conditions.Type: GrantFiled: January 10, 2020Date of Patent: May 7, 2024Assignee: Naegis Pharmaceuticals Inc.Inventors: David L. Burgoyne, Erin DeBruin, Julia Fonarev, James Gee Ken Yee, John Michael Langlands
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Publication number: 20220064132Abstract: Provided are specific leukotriene synthesis inhibitor compounds and pharmaceutical compositions comprising the compounds and methods of using the compounds and the pharmaceutical compositions in treating, for example, inflammatory diseases or conditions.Type: ApplicationFiled: January 10, 2020Publication date: March 3, 2022Applicant: Naegis Pharmaceuticals Inc.Inventors: David L. Burgoyne, Erin Debruin, Julia Fonarev, James Gee Ken Yee, John Michael Langlands
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Patent number: 7459479Abstract: The present invention is directed to a method for reducing the emetogenic effects of PDE inhibitors, and more particularly is directed to compounds having PDE4 inhibition activity with little or no emetogenic side-effects, and chemical methods including benzylation for preparing such compounds. A benzyl group may be attached to either a carbon or nitrogen atom of a PDE4 inhibitor. Suitable benzylation chemistry is to extract a hydrogen from a PDE4 inhibitor, preferably with a base, and then react the resulting nucleophilic PDE4 inhibitor with a benzylating agent, e.g., benzyl bromide or a derivative thereof.Type: GrantFiled: March 8, 2007Date of Patent: December 2, 2008Assignee: Biolipox ABInventors: Ronald W. Lauener, David L. Burgoyne, Patrick J. Rebstein, Lloyd F. Mackenzie, Yuanlin Zhou, Yaping Shen
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Publication number: 20080287522Abstract: The present invention is directed to a method for reducing the emetogenic effects of PDE inhibitors, and more particularly is directed to compounds having PDE4 inhibition activity with little or no emetogenic side-effects, and chemical methods including benzylation for preparing such compounds. A benzyl group may be attached to either a carbon or nitrogen atom of a PDE4 inhibitor. Suitable benzylation chemistry is to extract a hydrogen from a PDE4 inhibitor, preferably with a base, and then react the resulting nucleophilic PDE4 inhibitor with a benzylating agent, e.g., benzyl bromide or a derivative thereof.Type: ApplicationFiled: July 21, 2008Publication date: November 20, 2008Applicant: BIOLIPOX ABInventors: Ronald W. Lauener, David L. Burgoyne, Patrick J. Rebstein, Lloyd F. Mackenzie, Yuanlin Zhou, Yaping Shen
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Patent number: 7446129Abstract: The present invention is directed to a method for reducing the emetogenic effects of PDE inhibitors, and more particularly is directed to compounds having PDE4 inhibition activity with little or no emetogenic side-effects, and chemical methods including benzylation for preparing such compounds. A benzyl group may be attached to either a carbon or nitrogen atom of a PDE4 inhibitor. Suitable benzylation chemistry is to extract a hydrogen from a PDE4 inhibitor, preferably with a base, and then react the resulting nucleophilic PDE4 inhibitor with a benzylating agent, e.g., benzyl bromide or a derivative thereof.Type: GrantFiled: March 18, 2003Date of Patent: November 4, 2008Assignee: Biolipox ABInventors: Ronald W Lauener, David L Burgoyne, Patrick J Rebstein, Lloyd F Mackenzie, Yuanlin Zhou, Yaping Shen
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Patent number: 7067682Abstract: Steroid compounds having various oxygen substitution on the steroid nucleus are disclosed. A specific functionality present on many of the steroid compounds is oxygen substitution at both of positions 6 and 7. Thus, certain steroids have oxygen substitution at C6 and C7, and some have specific stereochemistries such as 6? and 7? oxygen substitution, and an alpha hydrogen at the 5 position in addition to having 6? and 7? oxygen substitution. Steroids having 3,4-epoxy functionality are also disclosed. In addition, steroids having C17 pyran and ?-lactone functionality, with oxygen substitution at C6 and C7, or at C15, of the steroid nucleus, are disclosed.Type: GrantFiled: November 6, 2003Date of Patent: June 27, 2006Assignees: Inflazyme Pharmaceuticals Ltd., The University of British Columbia, The University of AlbertaInventors: David L. Burgoyne, Yaping Shen, John M. Langlands, Christine Rogers, Joseph H L Chau, Edward Piers, Hassan Salari
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Patent number: 6982329Abstract: Steroids containing a cyclohexene moiety are efficiently oxidized to the corresponding ?,?-unsaturated ketone using copper iodide and t-butyl hydroperoxide. A steroid compound containing the ?,?-unsaturated ketone structure is efficiently converted to the corresponding vicinal diol using a hydroborating reagent followed by oxidative workup, e.g., borane followed by sodium perborate. Benzoyl and substituted benzoyls are superior protecting groups for hydroxyl groups present in the compounds.Type: GrantFiled: December 22, 2003Date of Patent: January 3, 2006Assignee: Inflazyme Pharmaceuticals Ltd.Inventors: David L. Burgoyne, Gueijun Ji, Eugene W. Kelleher, Nicholas D. Paschalides, Kishore Ramachandran, Yaping Shen, Yuanlin Zhou
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Patent number: 6949533Abstract: Steroid compounds having various oxygen substitution on the steroid nucleus are disclosed. A specific functionality present on many of the steroid compounds is oxygen substitution at both of positions 6 and 7. Thus, certain steroids have oxygen substitution at C6 and C7, and some have specific stereochemistries such as 6? and 7? oxygen substitution, and an alpha hydrogen at the 5 position in addition to having 6? and 7? oxygen substitution. Steroids having 3,4-epoxy functionality are also disclosed. In addition, steroids having C17 pyran and ?-lactone functionality, with oxygen substitution at C6 and C7, or at C15, of the steroid nucleus, are disclosed.Type: GrantFiled: November 6, 2003Date of Patent: September 27, 2005Assignees: Inflazyme Pharmaceuticals Ltd., The University of British Columbia, The University of AlbertaInventors: David L. Burgoyne, Yaping Shen, John M. Langlands, Christine Rogers, Joseph H.-L. Chau, Edward Piers, Hassan Salari
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Publication number: 20040266744Abstract: Steroids containing a cyclohexene moiety are efficiently oxidized to the corresponding &agr;, &bgr;-unsaturated ketone using copper iodide and t-butyl hydroperoxide. A steroid compound containing the &agr;, &bgr;-unsaturated ketone structure is efficiently converted to the corresponding vicinal diol using a hydroborating reagent followed by oxidative workup, e.g., borane followed by sodium perborate. Benzoyl and substituted benzoyls are superior protecting groups for hydroxyl groups present in the compounds.Type: ApplicationFiled: July 15, 2004Publication date: December 30, 2004Inventors: David L Burgoyne, Yaping Shen, Gueijun Ji, Yuanlin Zhou, Kishore D. Ramachandran, Nicholas D. Paschalides, Eugene W. Kelleher
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Publication number: 20040162425Abstract: Steroid compounds having various oxygen substitution on the steroid nucleus are disclosed. A specific functionality present on many of the steroid compounds is oxygen substitution at both of positions 6 and 7. Thus, certain steroids have oxygen substitution at C6 and C7, and some have specific stereochemistries such as 6&agr; and 7&bgr; oxygen substitution, and an alpha hydrogen at the 5 position in addition to having 6&agr; and 7&bgr; oxygen substitution. Steroids having 3,4-epoxy functionality are also disclosed. In addition, steroids having C17 pyran and &dgr;-lactone functionality, with oxygen substitution at C6 and C7, or at C15, of the steroid nucleus, are disclosed.Type: ApplicationFiled: November 6, 2003Publication date: August 19, 2004Applicants: Inflazyme Pharmaceuticals Ltd., The University of British Columbia, The University of AlbertaInventors: David L. Burgoyne, Yaping Shen, John M. Langlands, Christine Rogers, Joseph H.-L. Chau, Edward Piers, Hassan Salari
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Publication number: 20040157814Abstract: Steroid compounds having various oxygen substitution on the steroid nucleus are disclosed. A specific functionality present on many of the steroid compounds is oxygen substitution at both of positions 6 and 7. Thus, certain steroids have oxygen substitution at C6 and C7, and some have specific stereochemistries such as 6&agr; and 7&bgr; oxygen substitution, and an alpha hydrogen at the 5 position in addition to having 6&agr; and 7&bgr; oxygen substitution. Steroids having 3,4-epoxy functionality are also disclosed. In addition, steroids having C17 pyran and &dgr;-lactone functionality, with oxygen substitution at C6 and C7, or at C15, of the steroid nucleus, are disclosed.Type: ApplicationFiled: November 6, 2003Publication date: August 12, 2004Applicants: Inflazyme Pharmaceuticals Ltd., The University of British Columbia, The University of AlbertaInventors: David L. Burgoyne, Yaping Shen, John M. Langlands, Christine Rogers, Joseph H.L. Chau, Edward Piers, Hassan Salari
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Patent number: 6770658Abstract: &ggr;-Phenyl-substituted &Dgr;-lactams are disclosed. They may be formulated into pharmaceutical compositions, and/or used in the treatment or prevention of inflammation or other conditions or disease states.Type: GrantFiled: October 1, 2002Date of Patent: August 3, 2004Assignee: Inflazyme Pharmaceuticals Ltd.Inventors: Yaping Shen, David L. Burgoyne, Ronald W. Lauener, Yuanlin Zhou, Patrick J. Rebstein, Samuel D. M. Abraham
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Publication number: 20040138486Abstract: Steroids containing a cyclohexene moiety are efficiently oxidized to the corresponding &agr;,&bgr;-unsaturated ketone using copper iodide and t-butyl hydroperoxide. A steroid compound containing the &agr;,&bgr;-unsaturated ketone structure is efficiently converted to the corresponding vicinal diol using a hydroborating reagent followed by oxidative workup, e.g., borane followed by sodium perborate. Benzoyl and substituted benzoyls are superior protecting groups for hydroxyl groups present in the compounds.Type: ApplicationFiled: December 22, 2003Publication date: July 15, 2004Applicant: Inflazyme Pharmaceuticals Ltd.Inventors: David L. Burgoyne, Gueijun Ji, Eugene W. Kelleher, Nicholas D. Paschalides, Kishore Ramachandran, Yaping Shen, Yuanlin Zhou
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Patent number: 6706701Abstract: Steroid compounds having various oxygen substitution on the steroid nucleus are disclosed. A specific functionality present on many of the steroid compounds is oxygen substitution at both of positions 6 and 7. Thus, certain steroids have oxygen substitution at C6 and C7, and some have specific stereochemistries such as 6&agr; and 7&bgr; oxygen substitution, and an alpha hydrogen at the 5 position in addition to having 6&agr; and 7&bgr; oxygen substitution. Steroids having 3,4-epoxy functionality are also disclosed. In addition, steroids having C17 pyran and &dgr;-lactone functionality, with oxygen substitution at C6 and C7, or at C15, of the steroid nucleus, are disclosed.Type: GrantFiled: December 23, 1999Date of Patent: March 16, 2004Assignees: Inflazyme Pharmaceuticals Ltd., University of British Columbia, University of AlbertaInventors: David L. Burgoyne, Yaping Shen, John M. Langlands, Christine Rogers, Joseph H.-L. Chau, Edward Piers, Hassan Salari
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Patent number: 6696580Abstract: Steroids containing a cyclohexene moiety are efficiently oxidized to the corresponding &agr;,&bgr;-unsaturated ketone using copper iodide and t-butyl hydroperoxide. A steroid compound containing the &agr;,&bgr;-unsaturated ketone structure is efficiently converted to the corresponding vicinal diol using a hydroborating reagent followed by oxidative workup, e.g., borane followed by sodium perborate. Benzoyl and substituted benzoyls are superior protecting groups for hydroxyl groups present in the compounds.Type: GrantFiled: May 22, 2002Date of Patent: February 24, 2004Assignee: Inflazyme Pharmaceuticals Ltd.Inventors: David L. Burgoyne, Gueijun Ji, Eugene W. Kelleher, Nicholas D. Paschalides, Kishore Ramachandran, Yaping Shen, Yuanlin Zhou
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Publication number: 20030220352Abstract: The present invention is directed to a method for reducing the emetogenic effects of PDE inhibitors, and more particularly is directed to compounds having PDE4 inhibition activity with little or no emetogenic side-effects, and chemical methods including benzylation for preparing such compounds. A benzyl group may be attached to either a carbon or nitrogen atom of a PDE4 inhibitor. Suitable benzylation chemistry is to extract a hydrogen from a PDE4 inhibitor, preferably with a base, and then react the resulting nucleophilic PDE4 inhibitor with a benzylating agent, e.g., benzyl bromide or a derivative thereof.Type: ApplicationFiled: March 18, 2003Publication date: November 27, 2003Applicant: Inflazyme Pharmaceuticals Ltd.Inventors: Ronald W. Lauener, David L. Burgoyne, Patrick J. Rebstein, Lloyd F. MacKenzie, Yuanlin Zhou, Yaping Shen
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Publication number: 20030186943Abstract: &ggr;-Phenyl-substituted &Dgr;-lactams are disclosed. They may be formulated into pharmaceutical compositions, and/or used in the treatment or prevention of inflammation or other conditions or disease states.Type: ApplicationFiled: October 1, 2002Publication date: October 2, 2003Applicant: Inflazyme Pharmaceuticals Ltd.Inventors: Yaping Shen, David L. Burgoyne, Ronald W. Lauener, Yuanlin Zhou, Patrick J. Rebstein, Samuel D. M. Abraham
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Patent number: 6555572Abstract: The present invention is directed to a method for reducing the emetogenic effects of PDE inhibitors, and more particularly is directed to compounds having PDE4 inhibition activity with little or no emetogenic side-effects, and chemical methods including benzylation for preparing such compounds. A benzyl group may be attached to either a carbon or nitrogen atom of a PDE4 inhibitor. Suitable benzylation chemistry is to extract a hydrogen from a PDE4 inhibitor, preferably with a base, and then react the resulting nucleophilic PDE4 inhibitor with a benzylating agent, e.g., benzyl bromide or a derivative thereof.Type: GrantFiled: March 16, 2001Date of Patent: April 29, 2003Assignee: Inflazyme Pharmaceuticals Ltd.Inventors: Ronald W. Lauener, David L. Burgoyne, Patrick J. Rebstein, Lloyd F. Mackenzie, Yuanlin Zhou, Yaping Shen
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Publication number: 20030050286Abstract: Steroids containing a cyclohexene moiety are efficiently oxidized to the corresponding &agr;,&bgr;-unsaturated ketone using copper iodide and t-butyl hydroperoxide. A steroid compound containing the &agr;,&bgr;-unsaturated ketone structure is efficiently converted to the corresponding vicinal diol using a hydroborating reagent followed by oxidative workup, e.g., borane followed by sodium perborate. Benzoyl and substituted benzoyls are superior protecting groups for hydroxyl groups present in the compounds.Type: ApplicationFiled: May 22, 2002Publication date: March 13, 2003Inventors: David L. Burgoyne, Gueijun Ji, Eugene W. Kelleher, Nicholas D. Paschalides, Kishore Ramachandran, Yaping Shen, Yuanlin Zhou
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Patent number: 6458829Abstract: &ggr;-Phenyl-substituted &Dgr;-lactones and analogs thereof, including lactams, are disclosed. They may be formulated into pharmaceutical compositions, and/or used in the treatment or prevention of inflammation or other conditions or disease states.Type: GrantFiled: May 11, 2001Date of Patent: October 1, 2002Assignee: Inflazyme Pharmaceuticals Ltd.Inventors: Yaping Shen, David L. Burgoyne, Ronald W. Lauener, Yuanlin Zhou, Patrick J. Rebstein, Samuel D. M. Abraham