Patents by Inventor Dwight A. Shamblee

Dwight A. Shamblee 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).

  • Patent number: 5273993
    Abstract: Methods of treating chronic arthritis and osteoporosis which utilize both known and novel compounds which would fall under the general formula:(HO)p--A--[--OS(O).sub.2 NR.sup.1 R.sup.2 ].sub.zwherein A encompasses a wide range of values including but not limited to aryl, loweralkyl, cycloalkyl, and carbohydrates including sucrose and fructose; p is equal to the number of unreacted hydroxy groups contained on the molecule and may be zero; z is the number of --OS(O).sub.2 NR.sup.1 R.sup.2 groups and is always at least one; R.sup.1 and R.sup.2 are selected from hydrogen, loweralkyl, carboxy and the like; a novel process for preparing the compounds is provided wherein an appropriate sulfamic acid aryl ester is reacted with a hydroxy substituted A radical which may or may not contain thereon protected carboxyl, amino or hydroxy substituents, in an aprotic solvent containing a tertiary amine base. Pharmaceutical compositions for the treatment of chronic arthritis and osteoporosis are also provided.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: December 28, 1993
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Young S. Lo, Joseph C. Nolan, William J. Welstead, Jr., David A. Walsh, Dwight A. Shamblee, Ibrahim M. Uwaydah
  • Patent number: 5194446
    Abstract: Methods of treating chronic arthritis and osteoporosis which utilize both known and novel compounds which would fall under the general formula:(HO)p--A--[--OS(O).sub.2 NR.sup.1 R.sup.2 ].sub.zwherein A encompasses a wide range of values including but not limited to aryl, loweralkyl, cycloalkyl, and carbohydrates including sucrose and fructose; p is equal to the number of unreacted hydroxy groups contained on the molecule and may be zero; z is the number of --OS(O).sub.2 NR.sup.1 R.sup.2 groups and is always at least one; R.sup.1 and R.sup.2 are selected from hydrogen, loweralkyl, carboxy and the like; a novel process for preparing the compounds is provided wherein an appropriate sulfamic acid aryl ester is reacted with a hydroxy substituted A radical which may or may not contain thereon protected carboxyl, amino or hydroxy substituents, in an aprotic solvent containing a tertiary amine base. Pharmaceutical compositions for the treatment of chronic arthritis and osteoporosis are also provided.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: March 16, 1993
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Young S. Lo, Joseph C. Nolan, William J. Welstead, Jr., David A. Walsh, Dwight A. Shamblee, Ibrahim M. Uwaydah
  • Patent number: 5192785
    Abstract: Sulfamate esters of the formula(HO).sub.p --A--[OSO.sub.2 NR.sup.1 R.sup.2 ].sub.zwhere A is aryloxyalkyl, p is the number of unreacted hydroxy groups present on the alkyl moiety and may be zero, z is the number of --OS(O).sub.2 NR.sup.1 R.sup.2 groups attached to carbons of the alkyl moiety and is always at least one; R.sup.1 and R.sup.2 are selected from hydrogen, loweralkyl, carboxy, and the like are useful in treating glaucoma.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: March 9, 1993
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Young S. Lo, Joseph C. Nolan, Dwight A. Shamblee
  • Patent number: 4966979
    Abstract: A novel process is described for preparing azetidine and 2 or 3 methyl and ethyl azetidine free bases by reacting primary arylmethylamine having suitable bulk providing substituents attached to the methyl carbon and an appropriate propane derivative having leaving groups in the one and three position in hot organic solvent containing a non-nucleophilic base and an amount of water sufficient to promote azetidine ring formation to give N-protected-azetidines and deprotecting by hydrogenolysis under acidic conditions to give an acid salt of the azetidines and thereafter flashing off vaporized azetidine from a hot, agitated strong base solution or slurry and condensing to give the liquid azetidine free bases.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: October 30, 1990
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Young S. Lo, Dwight A. Shamblee, David H. Causey, Richard P. Mays
  • Patent number: 4870189
    Abstract: A novel process is described for preparing azetidine and 2 or 3 methyl and ethyl azetidine free bases by reacting primary arylmethylamine having suitable bulk providing substituents attached to the methyl carbon and an appropriate propane derivative having leaving groups in the one and three position in hot organic solvent containing a non-nucleophilic base and an amount of water sufficient to promote azetidine ring formation to give N-protected-azetidines and deprotecting by hydrogenolysis under acidic conditions to give an acid salt of the azetidines and thereafter flashing off vaporized azetidine from a hot, agitated strong base solution or slurry and condensing to give the liquid azetidine free bases.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: September 26, 1989
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Young S. Lo, Dwight A. Shamblee, David H. Causey, Richard P. Mays
  • Patent number: 4503073
    Abstract: Novel 2-amino-3-(alkylthiobenzoyl)phenylacetic acids, esters and metal salts have the formula: ##STR1## wherein R is hydrogen or lower alkyl, R.sup.1 is hydrogen, lower alkyl or pharmaceutically acceptable metal cation, R.sup.2 is hydrogen, halogen, lower alkyl or lower alkoxy, Am is primary amino (--NH.sub.2), methylamino or dimethylamino. The compounds have anti-inflammatory activity; have effective analgesic activity, and inhibit blood platelet aggregation.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: March 5, 1985
    Assignee: A. H. Robins Company, Incorporated
    Inventors: David A. Walsh, Dwight A. Shamblee
  • Patent number: 4313949
    Abstract: Novel 2-amino-3-benzoyl-phenylacetamides are provided having the formula: ##STR1## wherein R represents hydrogen or lower alkyl, R.sup.1 and R.sup.2 represent hydrogen, lower alkyl, cycloalkyl, phenyl and phenyl substituted by lower alkyl, lower alkoxy, halogen, nitro and trifluoromethyl, and R.sup.1 and R.sup.2 when taken together with the adjacent nitrogen may form a heterocyclic residue; X represents hydrogen, lower alkyl, lower alkoxy, halogen or trifluoromethyl; Y represents hydrogen, lower alkyl, lower alkoxy, halogen, trifluoromethyl, lower alkylthio, lower alkyloxythio or lower alkyldioxythio; Am is primary amino (--NH.sub.2), methylamino or dimethylamino, and n is 1 to 3 inclusive. The compounds exhibit anti-inflammatory, antipyretic, anti-blood platelet aggregation and analgetic pharmacological activities.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: February 2, 1982
    Assignee: A. H. Robins Company, Inc.
    Inventors: James R. Shanklin, Jr., Dwight A. Shamblee, David A. Walsh
  • Patent number: 4254135
    Abstract: Cis and trans 3-amino-4-hydroxypyrrolidines and derivatives thereof are disclosed having the formula: ##STR1## wherein R.sub.1 is hydrogen, loweralkyl or phenylcarbonyl; R.sub.2 is hydrogen, loweralkyl, lowercycloalkyl, phenyl or phenylloweralkyl; R.sub.3 is hydrogen, loweralkyl, phenylloweralkyl, phenylcarbonyl, diphenylmethyl, 5-yl-10,11-dihydro-5H-dibenzo[a,d]cycloheptene or naphthylcarbonyl; R.sub.4 is hydrogen, loweralkyl, phenylloweralkyl or lowercycloalkyl; phenyl is optionally substituted and acid addition salts thereof. The compounds have antidepressant activity and methods and pharmaceutical compositions for use thereof are disclosed.
    Type: Grant
    Filed: October 16, 1979
    Date of Patent: March 3, 1981
    Assignee: A. H. Robins Company, Inc.
    Inventors: David A. Walsh, Dwight A. Shamblee