Patents by Inventor William J. Welstead, Jr.

William J. Welstead, 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).

  • 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: 5183903
    Abstract: This invention relates to an improved process for the preparation of 3-phenoxy-1-azetidinecarboxamides of Formula I which are useful ##STR1## in the treatment of epileptic seizures. Under Formula I, n is 1 to 3, X is H, halogen, trifluoromethyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, acetyl, or aminocarbonyl, and R is H or methyl. This process involves heating a 3-phenoxyazetidine with urea to obtain the Formula I compound. Urea is inexpensive and easily removed by washing the solid Formula I product with water.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: February 2, 1993
    Assignee: A. H. Robins Company, Incorporated
    Inventors: William J. Welstead, Jr., Young S. Lo
  • Patent number: 4749788
    Abstract: A process is described wherein pyrido[1,4]benzodiazepines having the formula: ##STR1## wherein Q is NR.sup.1 R.sup.2 or ##STR2## are prepared from unsubstituted pyridobenzodiazepinones by alkylation reaction with halo-alkyl-Q followed by acylation of the other nitrogen; breaking the ring with an aryl Grignard reagent and recyclizing to add the aryl radical and form the azepine ring. Novel intermediates are thereby disclosed.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: June 7, 1988
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Young S. Lo, William J. Welstead, Jr.
  • Patent number: 4624961
    Abstract: A pharmaceutical method for improving memory or correcting memory deficiency is disclosed, utilizing compounds having the formula: ##STR1## wherein m and n are zero and one and when m is zero, the dotted line represents a double bond; X is oxygen or sulfur; R.sup.1 and R.sup.2 are hydrogen, loweralkyl, phenyl or phenylloweralkyl, or R.sup.1 and R.sup.2 taken together may form a fused second ring with the nitrogen atoms having three or four methylene groups to which may be attached at any second ring carbon atom thereof, a loweralkyl or phenyl radical; R.sup.3 is hydrogen or loweralkyl; Ar is phenyl, pyridyl, furanyl, thienyl, methoxy-1H-benzotriazolyl, indolinyl, methoxyindolinyl, methoxypyrimidinyl, aminomethoxypyrimidinyl, 1,3-benzodioxolyl or naphthalenyl, the active optical isomers; and the pharmaceutically acceptable acid addition salts thereof.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: November 25, 1986
    Assignee: A. H. Robins Company, Incorporated
    Inventor: William J. Welstead, Jr.
  • Patent number: 4605652
    Abstract: A pharmaceutical method for improving memory or correcting memory deficiency is disclosed, utilizing compounds having the formula: ##STR1## wherein n.sup.1, n.sup.2, n.sup.3, and n.sup.4 =0 to 3; R.sup.1, R.sup.2, R.sup.3, and R.sup.4 =H, loweralkyl or phenyl; R.sup.5 =H or loweralkyl; X=O or S; Ar=phenyl, substituted phenyl, pyridinyl, furanyl, thienyl, methoxy-1H-benzotriazolyl, indolinyl, methoxyindolinyl, methoxypyrimidinyl, amino-methoxypyrimadinyl, 1,3-benzodioxolyl, or naphthalenyl, and the pharmaceutically acceptable acid addition salts, hydrates and alcoholates thereof.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: August 12, 1986
    Assignee: A. H. Robins Company, Inc.
    Inventor: William J. Welstead, Jr.
  • Patent number: 4585785
    Abstract: Cis and trans-3-aryloxy-4-hydroxypyrrolidines and derivatives thereof having the formula: ##STR1## are disclosed wherein R.sub.1 is hydrogen, loweralkyl, benzyloxycarbonyl and N-loweralkylcarbamoyl; R.sub.2 is hydrogen, lower alkyl, cycloalkyl, phenylalkyl, benzyloxycarbonyl, carbamoyl, N-loweralkylcarbamoyl, N-diloweralkylcarbamoyl and parafluorobenzoyl-lower-alkyl; Ar is phenyl, substituted phenyl, 1-naphthyl, 2-naphthyl, 1-indenyl and 2-indenyl and pharmaceutically acceptable acid addition and quaternary salts thereof. The compounds have antidepressant, antihypertensive and antiarrythmic activity in animals.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: April 29, 1986
    Assignee: A. H. Robins Company, Inc.
    Inventors: David A. Walsh, William J. Welstead, Jr.
  • Patent number: 4568695
    Abstract: Novel 2-amino-3-benzoylphenethylalcohols are provided having the formula: ##STR1## wherein; X is hydrogen, loweralkyl, loweralkoxy, halogen or trifluoromethyl, andY is hydrogen, loweralkyl, loweralkoxy, halogen, trifluoromethyl, --S--loweralkyl, ##STR2## The compounds exhibit anti-inflammatory activity.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: February 4, 1986
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Henry W. Moran, William J. Welstead, Jr.
  • Patent number: 4452809
    Abstract: Cis and trans-3-aryloxy-4-hydroxypyrrolidines and derivatives thereof having the formula: ##STR1## are disclosed wherein R.sub.1 is hydrogen, loweralkyl, benzyloxycarbonyl and N-loweralkylcarbamoyl; R.sub.2 is hydrogen, lower alkyl, cycloalkyl, phenylalkyl, benzyloxycarbonyl, carbamoyl, N-loweralkylcarbamoyl, N-diloweralkylcarbamoyl and parafluorobenzoyl-lower-alkyl; Ar is phenyl, substituted phenyl, 1-naphthyl, 2-naphthyl, 1-indenyl and 2-indenyl and pharmaceutically acceptable acid addition and quaternary salts thereof. The compounds have antidepressant, antihypertensive and antiarrythmic activity in animals.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: June 5, 1984
    Assignee: A. H. Robins Company, Inc.
    Inventors: David A. Walsh, William J. Welstead, Jr.
  • Patent number: 4324791
    Abstract: 1-R-4-(omega-substituted alkyl)-3,3-diphenyl-2-pyrrolidinones of the formula ##STR1## wherein R is hydrogen, lower alkyl, cyclohexyl or benzyl, R.sup.1 is hydrogen, chloro, bromo, fluoro, trifluoromethyl or lower alkoxy, R.sup.2 is hydrogen, chloro, bromo, or fluoro, A is hydroxy, lower-alkylcarbonyloxy or lower-alkoxycarbonyl and n is 1, 2 or 3 having analgetic and antidiarrheal activity are disclosed. The pharmaceutically acceptable acid addition salts of the bases are within the scope of the present invention.
    Type: Grant
    Filed: August 1, 1978
    Date of Patent: April 13, 1982
    Assignee: A. H. Robins Company, Inc.
    Inventor: William J. Welstead, Jr.
  • Patent number: 4230718
    Abstract: 3,4-Epoxypyrrolidines substituted in the 1-position with alkyl, cycloalkyl and phenylalkyl are disclosed which have pharmaceutical application in cataract prevention in animals and as intermediates in preparation of trans-3-aryloxy-4-hydroxypyrrolidines. The epoxypyrrolidines are prepared by a novel route involving chlorination of pyrrolines in aqueous medium.
    Type: Grant
    Filed: January 9, 1979
    Date of Patent: October 28, 1980
    Assignee: A. H. Robins Company, Inc.
    Inventors: David A. Walsh, William J. Welstead, Jr.
  • Patent number: 4221716
    Abstract: A novel process for the preparation of 7-acylindolin-2-ones of the formula: ##STR1## wherein R is hydrogen, halogen, lower alkyl, lower alkoxy, or trifluoromethyl; R.sup.1 is lower alkyl, alkylphenyl, cycloalkyl, or aryl; and R.sup.2 is hydrogen, lower alkyl or benzyl is provided. The compounds are useful as intermediates in the preparation of 2-amino-3-acylphenylacetic acid compounds which possess pharmaceutical properties.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: September 9, 1980
    Assignee: A. H. Robins Company, Inc.
    Inventors: Young S. Lo, David A. Walsh, William J. Welstead, Jr.
  • Patent number: 4182774
    Abstract: Novel 2-amino-3-(5- and 6-)benzoylphenylacetic acids, esters and metal salts of the formula: ##STR1## wherein R is hydrogen or lower alkyl, R.sup.1 is hydrogen, lower-alkyl, sodium or potassium, R.sup.2 is hydrogen, halogen or lower alkoxy, X is hydrogen, lower alkyl, halogen, nitro or trifluoromethyl, Y is hydrogen, lower alkyl, halogen, nitro or trifluoromethyl, and Am is primary amino (--NH.sub.2) methylamino or dimethylamino. The compounds are prepared by hydrolysis of 4-(5- and 7-)benzoylindolin-2-ones to give the 2-amino-3-(5- and 6-)benzoylphenylacetic acids wherein amino is primary amino. The free acids are converted to the esters and metal salts. The calcium and magnesium salts are disclosed and are within the scope of the present invention. The compounds inhibit blood platelet aggregation.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: January 8, 1980
    Assignee: A. H. Robins Company, Incorporated
    Inventors: William J. Welstead, Jr., Henry W. Moran
  • Patent number: 4151282
    Abstract: Methods for using 5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinoline-1,2-dione and pharmaceutical compositions thereof in preventing diabetic complications are disclosed.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: April 24, 1979
    Assignee: A. H. Robins Company, Inc.
    Inventors: William J. Welstead, Jr., Warren N. Dannenburg
  • Patent number: 4151285
    Abstract: 1,5-Disubstituted-1,2-dihydro-2H-1,4-benzodiazepin-2-ones of the formula ##STR1## wherein R is hydrogen or fluoro, R.sup.1 is hydrogen, fluoro chloro, bromo or trifluoromethyl, and n is 2 to 4, having anticonvulsant activity and useful as anti-anxiety agents, are disclosed.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: April 24, 1979
    Assignee: A. H. Robins Company, Inc.
    Inventors: William J. Welstead, Jr., Robert F. Boswell, Jr.
  • Patent number: 4143150
    Abstract: Oxanilic acid derivatives having the formula: ##STR1## are disclosed wherein R is lower-alkyl, cycloalkyl, phenylalkyl or phenyl; R.sup.1 is hydrogen, lower-alkyl or phenyl; R.sup.2 is hydrogen, lower-alkyl, or lower-alkoxy; R.sup.3 is hydrogen, fluoro, chloro or bromo; X is oxygen or sulfur; and M is hydrogen, lower-alkyl or a physiologically acceptable cation. The compounds are useful for ameliorating and controlling symptoms associated with asthma.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: March 6, 1979
    Assignee: A. H. Robins Company, Inc.
    Inventors: William J. Welstead, Jr., Albert D. Cale, Jr.
  • Patent number: 4126635
    Abstract: Novel 2-amino-3-(5- and 6-)benzoylphenylacetic acids, esters and metal salts of the formula: ##STR1## wherein R is hydrogen or lower alkyl, R.sup.1 is hydrogen, lower-alkyl, sodium or potassium, R.sup.2 is hydrogen, halogen or lower alkoxy, X is hydrogen, lower alkyl, halogen, nitro or trifluoromethyl, Y is hydrogen, lower alkyl, halogen, nitro or trifluoromethyl, and Am is primary amino (--NH.sub.2) methylamino or dimethylamino. The compounds are prepared by hydrolysis of 4-(5- and 7-)benzoylindolin-2-ones to give the 2-amino-3-(5- and 6-)benzoylphenylacetic acids wherein amino is primary amino. The free acids are converted to the esters and metal salts. The calcium and magnesium salts are disclosed and are within the scope of the present invention. The compounds have anti-inflammatory activity, are effective in lowering the cholesterol levels in hyperlipemic rats and inhibit blood platelet aggregation.
    Type: Grant
    Filed: April 15, 1977
    Date of Patent: November 21, 1978
    Assignee: A. H. Robins Company, Incorporated
    Inventors: William J. Welstead, Jr., Henry W. Moran
  • Patent number: 4045576
    Abstract: Novel 2-amino-3-(5- and 6-)benzoylphenylacetic acids, esters and metal salts of the formula: ##STR1## wherein R is hydrogen or lower alkyl, R.sup.1 is hydrogen, lower-alkyl, sodium or potassium, R.sup.2 is hydrogen, halogen or lower alkoxy, X is hydrogen, lower alkyl, halogen, nitro or trifluoromethyl, Y is hydrogen, lower alkyl, halogen, nitro or trifluoromethyl, and Am is primary amino (--NH.sub.2) methylamino or dimethylamino. The compounds are prepared by hydrolysis of 4-(5- and 7-)benzoylindolin-2-ones to give the 2-amino-3-(5- and 6-)benzoylphenylacetic acids wherein amino is primary amino. The free acids are converted to the esters and metal salts. The calcium and magnesium salts are disclosed and are within the scope of the present invention. The compounds have anti-inflammatory activity, are effective in lowering the cholesterol levels in hyperlipemic rats and inhibit blood platelet aggregation.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: August 30, 1977
    Assignee: A. H. Robins Company, Incorporated
    Inventors: William J. Welstead, Jr., Henry W. Moran
  • Patent number: 4021552
    Abstract: 10-[.omega.-(Benzoylpiperidinyl)alkyl]phenothiazines having the formula ##STR1## wherein R is hydrogen, chloro, bromo, trifluoromethyl, lower alkoxy, acetyl, sulfamoyl, or dimethylsulfamoyl, R.sup.1 is hydrogen, chloro, bromo, fluoro, trifluoromethyl, lower alkyl or lower alkoxy and n is 2, 3 or 4 are disclosed. Methods for the preparation of the compounds are described. The compounds possess tranquilizing activity and are useful as tranquilizing agents in mammals.
    Type: Grant
    Filed: April 20, 1976
    Date of Patent: May 3, 1977
    Assignee: A. H. Robins Company, Incorporated
    Inventors: William J. Welstead, Jr., Robert F. Boswell, Jr.
  • Patent number: RE28973
    Abstract: 3-(OMEGA-SUBSTITUTED ALKYL)-INDOLES ARE DISCLOSED WHICH ARE USEFUL IN AMELIORATING THE TREMORS OF Parkinsonism. The compounds are prepared by metal hydride reduction of the precursor indole glyoxyloyl compounds.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: September 21, 1976
    Assignee: A. H. Robins Company, Incorporated
    Inventor: William J. Welstead, Jr.