Patents by Inventor Donald W. Hansen, Jr.
Donald W. Hansen, Jr. 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: 5633237Abstract: A class of imidazo[1,2-a]pyridinylalkyl phosphonic acid compounds is described for treatment to reduce neurotoxic injury associated with anoxia or ischemia which typically follows stroke, cardiac arrest or perinatal asphyxia. The treatment includes administration of a compound of this class alone or in a composition in an amount effective as an antagonist to inhibit excitotoxic actions at major neuronal excitatory amino acid receptor sites. Compounds of most interest are those of the formula: ##STR1## and the carboxylic and phosphonic alkyl esters and salts thereof; wherein R.sup.9 is selected from hydrido, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl; wherein each of Y.sub.m and Y.sub.Type: GrantFiled: July 6, 1994Date of Patent: May 27, 1997Assignee: G.D. Searle & Co.Inventors: Donald W. Hansen, Jr., Gilbert W. Adelstein, Karen B. Peterson, Sofya Tsymbalov
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Patent number: 5631399Abstract: The present invention relates to a novel process for the preparation of ethyl 3S-[[4-[[4-(aminoiminomethyl)phenyl]amino]-1,4-dioxobutyl]amino]-4-pentyno ate and pharmaceutically acceptable acid addition salt thereof.Type: GrantFiled: May 14, 1996Date of Patent: May 20, 1997Assignee: G. D. Searle & Co.Inventors: Kevin A. Babiak, Srinivasan Babu, James R. Behling, Mark L. Boys, Kimberly J. Cain-Janicki, Wendel W. Doubleday, Payman Farid, Timothy J. Hagen, E. A. Hallinan, Donald W. Hansen, Jr., Donald E. Korte, Kathleen T. Mc Laughlin, John R. Medich, Sean T. Nugent, Vlasdislav Orlovski, Jung M. Park, Karen B. Peterson, Daniel R. Pilipauskas, Barnett S. Pitzele, Sofya Tsymbalov, Glenn L. Stahl
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Patent number: 5536869Abstract: The present invention relates to a novel process for the preparation of ethyl 3S-[[4-[[4-(aminoiminomethyl)phenyl]amino]-1,4-dioxobutyl]amino]-4-pentyno ate and pharmaceutically acceptable acid addition salt thereof which comprises treating (trimethylsilyl)acetylene sequentially with n-butyllithium and 4-formylmorpholine followed by acid hydrolysis to give 3-(trimethylsilyl)-2-propynal; treating 3-(trimethylsilyl)-2-propynal with lithium bis(trimethylsilyl)amide to give in situ N,3-bis(trimethylsilyl)-2-propyn-1-imine; condensation of N,3-bis(trimethylsilyl)-2-propyn-1-imine with lithium t-butyl acetate to give (.+-.)1,1-dimethylethyl 3-amino-5-(trimethylsilyl)-4-pentynoate; treating (.+-.)1,1-dimethylethyl 3-amino-5-(trimethylsilyl)-4-pentynoate- with p-toluenesulfonic acid to give (.+-.)1,1-dimethylethyl 3-amino-5-(trimethylsilyl)-4-pentynoate, mono p-toluenesulfonic acid salt, treatment of resulting salt with ethanol in the presence of p-toluenesulfonic acid to give (.+-.Type: GrantFiled: July 14, 1995Date of Patent: July 16, 1996Assignee: G. D. Searle & Co.Inventors: Kevin A. Babiak, Srinivasan Babu, James R. Behling, Mark L. Boys, Kimberly J. Cain-Janicki, Wendel W. Doubleday, Payman Farid, Timothy J. Hagen, E. Ann Hallinan, Donald W. Hansen, Jr., Donald E. Korte, Kathleen T. McLaughlin, John R. Medich, Sean T. Nugent, Vlasdislav Orlovski, Jung M. Park, Karen B. Peterson, Daniel R. Pilipauskas, Barnett S. Pitzele, Sofya Tsymbalov, Glenn L. Stahl
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Patent number: 5504077Abstract: The present invention provides substituted dibenzoxazepine and dibenzthiazepine compounds of Formula I: ##STR1## which are useful as analgesic agents for the treatment of pain, pharmaceutical compositions comprising a therapeutically-effective amount of a compound of Formula I in combination with a pharmaceutically-acceptable carrier, and a method for eliminating or ameliorating pain in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: February 22, 1995Date of Patent: April 2, 1996Assignee: G. D. Searle & Co.Inventors: Joe T. Collins, Donald W. Hansen, Jr., Karen H. Peterson, Barnett S. Pitzele, David B. Reitz
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Patent number: 5464843Abstract: A class of imidazo[1,2-a]pyridinyldiacid compounds is described for cognitive enhancement and for treatment of cognitive disorders and which have activity as a cognitive enhancer. Such compounds are also useful to reduce neurotoxic injury associated with anoxia or ischemia which typically follows stroke, cardiac arrest or perinatal asphyxia. The treatment includes administration of a compound of this class alone or in a composition in an amount effective as an agonist or partial agonist to modulate, or as an antagonist to inhibit, excitotoxic actions at major neuronal excitatory amino acid receptor sites. Compounds of most interest are those of the formula: ##STR1## wherein each R.sup.20 is independently selected from hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl; wherein each of Y.sub.m and Y.sub.Type: GrantFiled: October 8, 1993Date of Patent: November 7, 1995Assignee: G.D. Searle & Co.Inventors: Donald W. Hansen, Jr., Karen B. Peterson, Joseph B. Monahan
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Patent number: 5461047Abstract: The present invention provides substituted dibenzoxazepine and dibenzthiazepine compounds of Formula I: ##STR1## which are useful as analgesic agents for the treatment of pain, and for prostaglandin-E.sub.2 mediated diseases, pharmaceutical compositions comprising a therapeutically-effective amount of a compound of Formula I in combination with a pharmaceutically-acceptable carrier, a method for eliminating or ameliorating pain in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal, and a method for treating prostaglandin-E.sub.2 mediated diseases in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: May 18, 1994Date of Patent: October 24, 1995Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Karen B. Peterson
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Patent number: 5449675Abstract: The present invention provides substituted dibenzoxazepine and dibenzthiazepine compounds of Formula I: ##STR1## which are useful as analgesic agents for the treatment of pain, pharmaceutical compositions comprising a therapeutically-effective amount of a compound of Formula I in combination with a pharmaceutically-acceptable carrier, and a method for eliminating or ameliorating pain in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: June 9, 1994Date of Patent: September 12, 1995Assignee: G. D. Searle & Co.Inventors: Nizal S. Chandrakumar, Donald W. Hansen, Jr., Karen B. Peterson, Barnett S. Pitzele
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Patent number: 5441950Abstract: The present invention provides substituted dibenzoxazepine and dibenzthiazepine compounds of Formula I: ##STR1## which are useful as analgesic agents for the treatment of pain, pharmaceutical compositions comprising a therapeutically-effective amount of a compound of Formula I in combination with a pharmaceutically-acceptable carrier, and a method for eliminating or ameliorating pain in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: June 9, 1994Date of Patent: August 15, 1995Assignee: G. D. Searle & Co.Inventors: Joe T. Collins, Donald W. Hansen, Jr., Karen B. Peterson, Barnett S. Pitzele, David B. Reitz
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Patent number: 5389645Abstract: The present invention provides substituted tyrosyl diamine amide compounds of general Formula I: ##STR1## and the pharmaceutically-acceptable salts thereof, which are useful for inducing analgesia in animals, pharmaceutical compositions comprising a pharmaceutically-acceptable carrier and a compound of Formula I, and a method for inducing analgesia in an animal in need thereof comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: August 13, 1992Date of Patent: February 14, 1995Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Nizal S. Chandrakumar, Karen B. Peterson, Sofya Tsymbalov
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Patent number: 5364850Abstract: The present invention provides substituted tyrosyl diamide compounds of general Formula I: ##STR1## and the pharmaceutically-acceptable salts thereof, which are useful for inducing analgesia in animals, pharmaceutical compositions comprising a pharmaceutically-acceptable carrier and a compound of Formula I, and a method for inducing analgesia in an animal in need thereof comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: September 24, 1993Date of Patent: November 15, 1994Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Nizal S. Chandrakumar, Karen B. Peterson, Sofya Tsymbalov, Robert K. Husa
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Patent number: 5360796Abstract: A class of imidazo[1,2-a]pyridinylalkyl phosphonic acid compounds is described for treatment to reduce neurotoxic injury associated with anoxia or ischemia which typically follows stroke, cardiac arrest or perinatal asphyxia. The treatment includes administration of a compound of this class alone or in a composition in an amount effective as an antagonist to inhibit excitotoxic actions at major neuronal excitatory amino acid receptor sites. Compounds of most interest are those of the formula: ##STR1## and the carboxylic and phosphonic alkyl esters and salts thereof; wherein the substituents are defined herein.Type: GrantFiled: December 9, 1991Date of Patent: November 1, 1994Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Gilbert W. Adelstein, Karen B. Peterson, Sofya Tsymbalov
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Patent number: 5354747Abstract: The present invention provides substituted dibenzoxazepine and dibenzthiazepine compounds of Formula I: ##STR1## which are useful as analgesic agents for the treatment of pain, and for prostaglandin-E.sub.2 mediated diseases, pharmaceutical compositions comprising a therapeutically-effective amount of a compound of Formula I in combination with a pharmaceutically-acceptable carrier, a method for eliminating or ameliorating pain in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal, and a method for treating prostaglandin-E.sub.2 mediated diseases in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: June 16, 1993Date of Patent: October 11, 1994Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Karen B. Peterson
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Patent number: 5272175Abstract: The present invention provides substituted tyrosyl diamide compounds of general Formula I: ##STR1## and the pharmaceutically-acceptable salts thereof, which are useful for inducing analgesia in animals, pharmaceutical compositions comprising a pharmaceutically-acceptable carrier and a compound of Formula I, and a method for inducing analgesia in an animal in need thereof comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: May 20, 1992Date of Patent: December 21, 1993Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Nizal S. Chandrakumar, Karen B. Peterson, Sofya Tsymbalov, Robert K. Husa
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Patent number: 5216124Abstract: The present invention provides substituted cyclic tetrapeptide compounds of Formula I: ##STR1## and the pharmaceutically acceptable salts, esters and amides thereof, which are useful for treating pain in animals, pharmaceutical compositions which comprises a therapeutically-effective amount of a compound of Formula I in combination with a pharmaceutically-acceptable carrier, and a method for eliminating or ameliorating pain in an animal comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: May 21, 1991Date of Patent: June 1, 1993Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Karen B. Peterson, Nizal S. Chandrakumar, Henry I. Mosberg
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Patent number: 5169833Abstract: The present invention provides substituted cyclic pentapeptide compounds of general Formula I: ##STR1## and the pharmaceutically-acceptable slats, esters and amides thereof, which are useful for inducing analgesia in animals, pharmaceutical compositions comprising a pharmaceutically-acceptable carrier and a compound of Formula I, and a method for inducing analgesia in an animal in need thereof comprising administering a therapeutically-effective amount of a compound of Formula I to the animal.Type: GrantFiled: May 21, 1991Date of Patent: December 8, 1992Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Sofya Tsymbalov, Nizal S. Chandrakumar, Donna L. Hammond, Henry I. Mosberg
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Patent number: 4933325Abstract: The invention relates to novel substituted tyrosyl alanine dipeptide amides of the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof wherein R.sup.1 is hydrogen, lower alkyl, hydroxy, --OCO.sub.2 lower alkyl, lower alkoxy, --O(CH.sub.2).sub.n -phenyl with the phenyl optionally substituted by halogen, --NO.sub.2, --CN, --NH.sub.2 or lower alkyl wherein n is 1 to 4; R.sup.2 and R.sup.3 represent lower alkyl, halogen, or lower alkoxy, or either one of R.sup.2 or R.sup.3 is hydrogen and the other is lower alkyl, lower alkoxy or halogen; R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, and R.sup.9 may be the same or different and represent hydrogen or lower alkyl; R.sup.Type: GrantFiled: January 20, 1988Date of Patent: June 12, 1990Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Barnett S. Pitzele, Michael Clare, Robert W. Hamilton
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Patent number: 4933369Abstract: The present invention relates to new compounds of the formula ##STR1## and the pharmaceutically acceptable salts thereof and the enantiomers thereof, wherein R.sup.1 is H, lower alkyl, alkenyl, aralkyl, or C(O)R.sup.2 wherein R.sup.2 is lower alkyl, alkenyl, alkoxy, or aralkyl; n is an integer of from 2-4; m is an integer of from 0-4; A is S(O).sub.x wherein x is an integer of from 0-2; and Ar is phenyl or thienyl. These compounds are useful as analgesics.Type: GrantFiled: September 30, 1988Date of Patent: June 12, 1990Assignee: G. D. Searle & Co.Inventors: Barnett S. Pitzele, Nizal S. Chandrakumar, Donald W. Hansen, Jr., Gilbert W. Adelstein
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Patent number: 4880829Abstract: The invention relates to novel substituted tyrosyl alanine dipeptide amides of the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof wherein R.sup.1 is hydrogen, lower alkyl, hydroxy, --OCO.sub.2 lower alkyl, lower alkoxy, --O(CH.sub.2).sub.n --phenyl with the phenyl optionally substituted by halogen, --NO.sub.2, --CN, --NH.sub.2 or lower alkyl wherein n is 1 to 4; R.sup.2 and R.sup.3 represent lower alkyl, halogen, or lower alkoxy, or either one of R.sup.2 or R.sup.3 is hydrogen and the other is lower alkyl, lower alkoxy or halogen; R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, and R.sup.9 may be the same or different and represent hydrogen or lower alkyl; R.sup.Type: GrantFiled: January 20, 1988Date of Patent: November 14, 1989Assignee: G. D. Searle and CompanyInventors: Donald W. Hansen, Jr., Barnett S. Pitzele, Michael Clare, Robert W. Hamilton
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Patent number: 4847241Abstract: The invention relates to novel substituted tyrosyl alanine dipeptide amides of the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof wherein R.sup.1 is hydrogen, lower alkyl, hydroxy, --OCO.sub.2 lower alkyl, lower alkoxy, --O(CH.sub.2).sub.n --phenyl with the phenyl optionally substituted by halogen, --NO.sub.2, --CN, --NH.sub.2 or lower alkyl wherein n is 1 to 4; R.sup.2 and R.sup.3 represent lower alkyl, halogen, or lower alkoxy, or either one of R.sup.2 or R.sup.3 is hydrogen and the other is lower alkyl, lower alkoxy or halogen; R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, and R.sup.9 may be the same or different and represent hydrogen or lower alkyl; R.sup.Type: GrantFiled: January 20, 1988Date of Patent: July 11, 1989Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Robert W. Hamilton, Barnett S. Pitzele, Michael Clare
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Patent number: 4822775Abstract: The invention relates to novel substituted tyrosyl alanine dipeptide amides of the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof wherein R.sup.1 is hydrogen, lower alkyl, hydroxy, --OCO.sub.2 lower alkyl, lower alkoxy, --O(CH.sub.2).sub.n -phenyl with the phenyl optionally substituted by halogen, --NO.sub.2, --CN, --NH.sub.2 or lower alkyl wherein n is 1 to 4; R.sup.2 and R.sup.3 represent lower alkyl, halogen, or lower alkoxy, or either one of R.sup.2 or R.sup.3 is hydrogen and the other is lower alkyl, lower alkoxy or halogen; R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, and R.sup.9 may be the same or different and represent hydrogen or lower alkyl; R.sup.Type: GrantFiled: July 14, 1986Date of Patent: April 18, 1989Assignee: G. D. Searle & Co.Inventors: Donald W. Hansen, Jr., Barnett S. Pitzele, Michael Clare, Robert W. Hamilton