Patents by Inventor Timothy Kogan
Timothy Kogan 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: 6683103Abstract: Thienylsulfonamides and their pharmaceutically acceptable derivatives, pharmaceutical compositions, articles of manufacture, combinations, lyophilized powders and methods for the treatment of endothelin diseases using these formulations and sulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.Type: GrantFiled: December 20, 2001Date of Patent: January 27, 2004Assignee: Texas Biotechnology CorporationInventors: Chengde Wu, Natalie Blok, Timothy Kogan, Karin Keller
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Publication number: 20030208084Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides, formulations of pharmaceutically-acceptable salts thereof and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides, formulations thereof and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit the activity of endothelin are also provided.Type: ApplicationFiled: May 28, 2003Publication date: November 6, 2003Inventors: Chengde Wu, Bore Gowda Raju, Timothy Kogan, Natalie Blok, Patricia Woodard
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Patent number: 6632829Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides, formulations of pharmaceutically-acceptable salts thereof and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides, formulations thereof and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit the activity of endothelin are also provided.Type: GrantFiled: November 5, 2001Date of Patent: October 14, 2003Assignee: Texas Biotechnology Corp.Inventors: Chengde Wu, Bore Gowda Raju, Timothy Kogan, Natalie Blok, Patricia Woodard
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Patent number: 6613804Abstract: Biphenylsulfonamides and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, bicyclic or tricyclic carbon or heterocyclic ring biphenylsulfonamides and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: GrantFiled: December 4, 2001Date of Patent: September 2, 2003Assignee: Encysive Pharmaceuticals, Inc.Inventors: Ming Fai Chan, Timothy Kogan, Erik Joel Verner, Adam Kois, Vitukudi Narayanaiyengar Balaji
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Patent number: 6458805Abstract: Formulations of pharmaceutically-acceptable salts of thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides using the formulations are provided. In particular, formulations of sodium salts of N-(isoxazolyl)-thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)-pyrrolylsulfonamides and methods using these sulfonamide salts for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide salt are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamide salts or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: GrantFiled: February 23, 2001Date of Patent: October 1, 2002Assignee: Texas Biotechnology CorporationInventors: Natalie Blok, Chengde Wu, Patricia Woodard, Karin Keller, Timothy Kogan
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Patent number: 6432994Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides, pharmaceutically-acceptable salts of sulfonamides, formulations of salts and the sulfonamides, and methods for modulating or altering the activity of the endothelin family of peptides using the formulations and sulfonamides are provided. In particular, formulations of sodium salts of N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.Type: GrantFiled: March 27, 2000Date of Patent: August 13, 2002Assignee: Texas Biotechnology CorporationInventors: Chengde Wu, Natalie Blok, Timothy Kogan, Karin Keller, Patricia Woodard
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Publication number: 20020095041Abstract: Biphenylsulfonamides and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, bicyclic or tricyclic carbon or heterocyclic ring biphenylsulfonamides and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: ApplicationFiled: December 4, 2001Publication date: July 18, 2002Inventors: Ming Fai Chan, Timothy Kogan, Erik Joel Verner, Adam Kois, Vitukudi Narayanaiyengar Balaji
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Patent number: 6420567Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides, formulations of pharmaceutically-acceptable salts thereof and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides, formulations thereof and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit the activity of endothelin are also provided.Type: GrantFiled: September 26, 1997Date of Patent: July 16, 2002Assignee: Texas Biotechnology CorporationInventors: Chengde Wu, Bore Gowda Raju, Timothy Kogan, Natalie Blok
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Publication number: 20020091270Abstract: Thienylsulfonamides and their pharmaceutically acceptable derivatives, pharmaceutical compositions, articles of manufacture, combinations, lyophilized powders and methods for the treatment of endothelin diseases using these formulations and sulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.Type: ApplicationFiled: December 20, 2001Publication date: July 11, 2002Inventors: Chengde Wu, Natalie Blok, Timothy Kogan, Karin Keller, Patricia Woodard
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Publication number: 20020091272Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides, formulations of pharmaceutically-acceptable salts thereof and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides, formulations thereof and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit the activity of endothelin are also provided.Type: ApplicationFiled: November 5, 2001Publication date: July 11, 2002Inventors: Chengde Wu, Bore Gowda Raju, Timothy Kogan, Natalie Blok, Patricia Woodard
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Patent number: 6342610Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: GrantFiled: November 7, 1997Date of Patent: January 29, 2002Assignee: Texas Biotechnology Corp.Inventors: Ming Fai Chan, Chengde Wu, Bore Gowda Raju, Timothy Kogan, Erik Joel Verner, Rosario Silvestre Castillo, Venkatachalapathi Yalamoori, Adam Kois, Vitukudi Narayanaiyengar Balaji
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Patent number: 6331637Abstract: N-alkyl, N-alkenyl, N-alkynyl, N-aryl and N-fused bicyclo or tricyclo thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, (phenyl) and (phenoxy)thienylsulfonamides, (phenyl) and (phenoxy)furylsulfonamides, and (phenyl) and (phenoxy)pyrrolylsulfonamides and methods of using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: GrantFiled: March 22, 1999Date of Patent: December 18, 2001Assignee: Texas Biotechnology CorporationInventors: Ming Fai Chan, Chengde Wu, Bore Gowda Raju, Timothy Kogan, Adam Kois, Erik Joel Verner, Rosario Silvestre Castillo, Venkatachalapathi Yalamoori, Vitukudi Narayanaiyengar Balaji
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Publication number: 20010039289Abstract: Formulations of pharmaceutically-acceptable salts of thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides using the formulations are provided. In particular, formulations of sodium salts of N-(isoxazolyl)-thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)-pyrrolylsulfonamides and methods using these sulfonamide salts for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide salt are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamide salts or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: ApplicationFiled: February 23, 2001Publication date: November 8, 2001Inventors: Natalie Blok, Chengde Wu, Patricia Woodard, Karin Keller, Timothy Kogan
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Publication number: 20010021714Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)-furylsulfonamides and N-(isoxazolyl)pyrrolyisulfonamides and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prod rugs thereof that inhibit or increase the activity of endothelin are also provided.Type: ApplicationFiled: November 7, 1997Publication date: September 13, 2001Inventors: MING FAI CHAN, CHENGDE WU, BORE GOWDA RAJU, TIMOTHY KOGAN, ERIK JOEL VERNER, ROSARIO SILVESTRE CASTILLO, VENKATACHALAPATHI YALAMOORI, ADAM KOIS, VITUKUDI NARAYANAIYENGAR BALAJI
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Patent number: 6248767Abstract: Formulations of pharmaceutically-acceptable salts of thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides using the formulations are provided. In particular, formulations of sodium salts of N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides and methods using these sulfonamide salts for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide salt are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamide salts or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: GrantFiled: September 26, 1997Date of Patent: June 19, 2001Assignee: Texas Biotechnology Corp.Inventors: Natalie Blok, Chengde Wu, Patricia Woodard, Karin Keller, Timothy Kogan
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Patent number: 5962490Abstract: Thienyl-, furyl- and pyrrolyl-sulfonamides and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)-furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.Type: GrantFiled: September 27, 1996Date of Patent: October 5, 1999Assignee: Texas Biotechnology CorporationInventors: Ming Fai Chan, Chengde Wu, Bore Gowda Raju, Timothy Kogan, Adam Kois, Erik Joel Verner, Rosario Silvestre Castillo, Venkatachalapathi Yalamorri, Vitukudi Narayanaiyengar Balaji
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Patent number: 5326762Abstract: Amides of the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently heteroaryl, X-substituted heteroaryl, X-substituted phenyl, N-substituted triazinyl or N-substituted imidazolyl;and in addition, one of R.sub.1 and R.sub.2 can be as defined above and the other can be phenyl;R.sub.3 is an alkyl chain of 2 to 25 carbon atoms, saturated or unsaturated; an alkyl chain as defined substituted by one or more substituents selected from the group consisting of phenyl, X-substituted phenyl, heteroaryl and X-substituted heteroaryl; an alkyl chain as defined interrupted by one or more groups independently selected from the group consisting of --O--, --S--, --SO--, --SO.sub.2 --, --NH--, --N(lower alkyl)--, --C(O)--, phenylene, X-substituted phenylene, heteroarylene and X-substituted heteroarylene; or an interrupted alkyl chain as defined substituted by one or more substituents selected form the group consisting of phenyl, X-substituted phenyl, heteroaryl and X-substituted heteroaryl;R.sub.Type: GrantFiled: May 19, 1992Date of Patent: July 5, 1994Assignee: Schering CorporationInventors: John Clader, Sundeep Dugar, Timothy Kogan, Bradley Tait, Wayne Vaccaro
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Patent number: 5238935Abstract: N-acyltetrahydroisoquinolines including novel compounds of the formula ##STR1## wherein R.sup.1 is a C10-C25 alkyl chain; a substituted C10-C25 alkyl chain; an interrupted C10-C25 alkyl chain; a substituted interrupted C10-C25 alkyl chain; diphenylamino; di-(R.sup.2 -substituted phenyl)amino; di-(heteroaryl)amino; di-(R.sup.2 -substituted heteroaryl)amino; diphenylmethyl; or di-(R.sup.2 -substituted phenyl)methyl;R.sup.2 is hydroxy, lower alkyl, lower alkoxy, halogeno, amino, lower alkylamino or di-(lower alkyl)amino;R.sup.3, R.sup.4 and R.sup.5 are independently H or --(CH.sub.2).sub.n --Ar;Ar is phenyl, R.sup.2 -substituted phenyl, heteroaryl or R.sup.2 - substituted heteroaryl;n=0,1 or 2;m=0,1 or 2;or a pharmaceutically acceptable salt thereof, useful in the treatment of atherosclerosis are disclosed.Type: GrantFiled: February 20, 1992Date of Patent: August 24, 1993Assignee: Schering CorporationInventors: Sundeep Dugar, Timothy Kogan
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Patent number: 5149709Abstract: Amides of the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently heteroaryl, X-substituted heteroaryl, X-substituted phenyl, N-substituted triazinyl or N-substituted imidazolyl;and in addition, one of R.sub.1 and R.sub.2 can be as defined above and the other can be phenyl;R.sub.3 is an alkyl chain of 2 to 25 carbon atoms, saturated or unsaturated; an alkyl chain as defined substituted by one or more substituents selected from the group consisting of phenyl, X-substituted phenyl, heteroaryl and X-substituted heteroaryl; an alkyl chain as defined interrupted by one or more groups independently selected from the group consisting of --O--, --S--, --SO--, --SO.sub.2 --, --NH--, --N(lower alkyl)--, --C(O)--, phenylene, X-substituted phenylene, heteroarylene and X-substituted heteroarylene; or an interrupted alkyl chain as defined substituted by one or more substituents selected from the group consisting of phenyl, X-substituted phenyl, heteroaryl and X-substituted heteroaryl;R.sub.Type: GrantFiled: July 3, 1990Date of Patent: September 22, 1992Assignee: Schering CorporationInventors: John Clader, Sundeep Dugar, Timothy Kogan, Bradley Tait, Wayne Vaccaro
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Patent number: 5124337Abstract: N-acyltetrahydroisoquinolines including novel compounds of the formula ##STR1## wherein R.sup.1 is a C10-C25 alkyl chain; a substituted C10-C25 alkyl chain; an interrupted C10-C25 alkyl chain; a substituted interrupted C10-C25 alkyl chain; diphenylamino; di-(R.sup.2 -substituted phenyl)amino; di-(heteroaryl)amino; di-R.sup.2 -substituted heteroary)amino; diphenylmethyl; or di-(R.sup.2 -substituted phenyl)methyl;R.sup.2 is hydroxy, lower alkyl, lower alkoxy, halogeno, amino, lower alkylamino or di-(lower alkyl)amino;R.sup.3, R.sup.4 and R.sup.5 are independently H or --(CH.sub.2 .sub.n --Ar;Ar is phenyl, R.sup.2 -substituted phenyl, heteroaryl or R.sup.2 -substituted heteroaryl;n=0,1 or 2;m=0,1 or 2;or a pharmaceutically acceptable salt thereof, useful in the treatment of atherosclerosis are disclosed.Type: GrantFiled: May 20, 1991Date of Patent: June 23, 1992Assignee: Schering CorporationInventors: Sundeep Dugar, Timothy Kogan