Patents by Inventor Ivan Lantos
Ivan Lantos 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: 6355813Abstract: Invented is an improved process for preparing aromatic ring-fused cyclopentane derivatives. Preferred compounds prepared by this invention are indane carboxylates and cyclopentanopyridine derivatives. The most preferred compounds prepared by this invention are (+)(1S, 2R, 3S)-3-[2-(2-hydroxyeth-1-yloxy)-4-methoxyphenyl]-1-(3,4-methylenedioxyphenyl)-5-(prop-1-yloxy)indane-2-carboxylic acid and pharmaceutically acceptable salts thereof and (+)(1S, 2R, 3S)-3-(2-carboxymethoxy-4-methoxyphenyl)-1-(3,4-methylenedioxyphenyl)-5-(prop-1-yloxy)indane-2-carboxylic acid and pharmaceutically acceptable salts thereof. Also invented are novel intermediates useful in preparing these compounds.Type: GrantFiled: June 29, 2000Date of Patent: March 12, 2002Assignee: SmithKline Beecham CorporationInventors: William Morrow Clark, Ivan Lantos, Robert John Mills, Lendon Norwood Pridgen, Ann Marie Tickner
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Patent number: 6143907Abstract: Invented is an improved process for preparing aromatic ring-fused cyclopentane derivatives. Preferred compounds prepared by this invention are indane carboxylates and cyclopentanopyridine derivatives. The most preferred compounds prepared by this invention are (+)(1S,2R,3S)-3-[2-(2-hydroxyeth-1-yloxy)-4-methoxyphenyl]-1-(3,4-methylen edioxyphenyl)-5-(prop-1-yloxy)indane-2-carboxylic acid and pharmaceutically acceptable salts thereof and (+)(1S,2R,3S)-3-(2-carboxymethoxy-4-methoxyphenyl)-1-(3,4-methylenedioxyph eyl)-5-(prop-1-yloxy)indane-2-carboxylic acid and pharmaceutically acceptable salts thereof. Also invented are novel intermediates useful in preparing these compounds.Type: GrantFiled: February 4, 1997Date of Patent: November 7, 2000Assignee: SmithKline Beecham CorporationInventors: William Morrow Clark, Ivan Lantos, Robert John Mills, Lendon Norwood Pridgen, Ann Marie Tickner
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Patent number: 5208353Abstract: This invention relates to a process for preparing epoxy esters, and intermediates prepared by this process, in particular, to a process which produces non-racemic epoxy esters which are of use as intermediates in the preparation of pharmaceutical compounds.Type: GrantFiled: July 15, 1992Date of Patent: May 4, 1993Assignee: SmithKline Beecham Corp.Inventors: Joseph R. Flisak, Paul G. Gassman, Ivan Lantos, Wilford L. Mendelson
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Patent number: 5134150Abstract: A method of inhibiting the 5-lipoxygenase pathway in an animal in need thereof which comprises administering an effective, 5-lipoxygenase pathway inhibiting amount of a diaryl- substituted imidazole fused to a thiazole pyrrolidine, thiazide or piperidine ring to such animal.Type: GrantFiled: December 4, 1989Date of Patent: July 28, 1992Assignee: SmithKline Beecham CorporationInventors: Paul E. Bender, John G. Gleason, Don E. Griswold, Nabil Hanna, Ivan Lantos, Kazys A. Razgaitis, Henry M. Sarau, Susan C. Shilcrat
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Patent number: 5110959Abstract: This invention relates to a process for preparing epoxy esters, and intermediates prepared by this process, in particular, to a process which produces non-racemic epoxy esters which are of use as intermediates in the preparation of pharmaceutical compounds.Type: GrantFiled: June 14, 1989Date of Patent: May 5, 1992Assignee: Smithkline Beckman Corp.Inventors: Joseph R. Flisak, Paul G. Gassman, Ivan Lantos, Wilford L. Mendelson
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Patent number: 5008390Abstract: 6-Aryl-2,3-dihydroimidazo[2,1-b]thiazoles and corresponding thiazines act as nucleophiles, either directly or in the form of Grignard reagents, with N-acylpyridinium salts to produce new 6-aryl-5-(N-acyl-1,4-dihydro-4-pyridyl)-2,3-dihydroimidazo-[2,1-b]thiazole s and corresponding thiazines. These are oxidized to give the corresponding pyridyl-substituted imidazo[2,1-b]thiazoles and thiazines, which are active as inhibitors of the 5-lipoxygenase pathway of arachidonic acid metabolism.Type: GrantFiled: November 3, 1988Date of Patent: April 16, 1991Assignee: SmithKline Beckman CorporationInventors: Paul E. Bender, Ivan Lantos, Michael A. McGuire, Lendon N. Pridgen, Herbert B. Winicov
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Patent number: 4803279Abstract: 6-Aryl-2,3-dihydroimidazo[2,1-b]thiazoles and corresponding thiazines act as nucleophiles, either directly or in the form of Grignard reagents, with N-acylpyridinium salts to produce new 6-aryl-5-(N-acyl-1,4-dihydro-4-pyridyl)-2,3-dihydroimidazo-[2,1-b]thiazole s and corresponding thiazines. These are oxidized to give the corresponding pyridyl-substituted imidazo[2,1-b]thiazoles and thiazines, which are active as inhibitors of the 5-lipoxygenase pathway of arachidonic acid metabolism.Type: GrantFiled: April 28, 1986Date of Patent: February 7, 1989Assignee: SmithKline Beckman CorporationInventors: Paul E. Bender, Ivan Lantos, Michael A. McGuire, Lendon N. Pridgen, Herbert B. Winicov
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Patent number: 4200738Abstract: A new synthesis of auranofin comprising reacting 2,3,4,6-tetra-O-acetyl-.alpha.-D-glucopyranosyl bromide with a S-(triethylphosphineaurous)thiouronium salt.Type: GrantFiled: April 21, 1977Date of Patent: April 29, 1980Assignee: SmithKline CorporationInventors: David T. Hill, Blaine M. Sutton, Ivan Lantos
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Patent number: 4175127Abstract: The compounds are 5/6-pyridyl-phenyl-2,3-dihydroimidazo[2,1-b]thiazoles which have utility as intermediates and/or as having antiarthritic activity. A preferred group of compounds is 5-(4-pyridyl)-6-(4-substituted phenyl)-2,3-dihydroimidazo[2,1-b]thiazoles which have significant anti-arthritic activity.Type: GrantFiled: September 27, 1978Date of Patent: November 20, 1979Assignee: SmithKline CorporationInventors: Paul E. Bender, Ivan Lantos
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Patent number: 4133952Abstract: The S-gold salt of 2,3,4,6-tetra-O-acetyl-1-thio-.beta.-D-glucopyranose reacts with triethylphosphine in an organic solvent to produce auranofin.Type: GrantFiled: June 10, 1977Date of Patent: January 9, 1979Assignee: SmithKline CorporationInventors: David T. Hill, Ivan Lantos, Blaine M. Sutton
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Patent number: 4131732Abstract: A new synthesis of auranofin comprising reacting 2,3,4,6-tetra-O-acetyl-.alpha.-D-glucopyranosyl bromide with triethylphosphinegold(I) chloride and sodium or potassiumsulfide. Auranofin is an antiarthritic pharmaceutical compound. Auranofin is an orally active therapeutic agent which is useful in man as an antiarthritic.Type: GrantFiled: April 21, 1977Date of Patent: December 26, 1978Assignee: SmithKline CorporationInventors: David T. Hill, Blaine M. Sutton, Ivan Lantos
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Patent number: 4125711Abstract: Auranofin is prepared by reacting 1-.beta.-D-thio-2,3,4,6-tetra-O-acetylglucose with a triethylphosphine gold mercaptide.Type: GrantFiled: June 30, 1977Date of Patent: November 14, 1978Assignee: Smithkline CorporationInventors: David T. Hill, Ivan Lantos, Blaine M. Sutton
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Patent number: 4125710Abstract: Bis(triethylphosphine)gold salts are advantageous agents for preparing auranofin.Type: GrantFiled: June 30, 1977Date of Patent: November 14, 1978Assignee: Smithkline CorporationInventors: David T. Hill, Ivan Lantos, Blaine M. Sutton
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Patent number: 4124759Abstract: Auranofin is prepared by direct O-acetylation of S-triethylphosphinegold 1-thio-.beta.-D-glucopyranoside.Type: GrantFiled: June 30, 1977Date of Patent: November 7, 1978Assignee: SmithKline CorporationInventors: David T. Hill, Ivan Lantos, Blaine M. Sutton
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Patent number: 4122254Abstract: Auranofin and its congeners are prepared by the reaction of a S-substituted 2,3,4,6-tetra-O-acetyl-1-thio-.beta.-D-glucopyranose with a tertiary phosphine gold ester or sulfide.Type: GrantFiled: June 30, 1977Date of Patent: October 24, 1978Assignee: SmithKline CorporationInventors: David T. Hill, Ivan Lantos, Blaine M. Sutton
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Patent number: 4115642Abstract: Auranofin and its congeners are prepared by reacting a bis(polyacetylsaccharide)disulfide with a tertiary phosphinegold mercaptide in a suitable organic solvent.Type: GrantFiled: June 30, 1977Date of Patent: September 19, 1978Assignee: SmithKline CorporationInventors: David T. Hill, Ivan Lantos, Blaine M. Sutton
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Patent number: 4096249Abstract: The compounds are trialkylphosphinegold(I)2,3,4,6-tetra-O-(N-loweralkylcarbamoyl)-1-thio-.be ta.-D-glucopyranosides which have antiarthritic activity and, in particular, are of use in the treatment of rheumatoid arthritis.Type: GrantFiled: February 16, 1977Date of Patent: June 20, 1978Assignee: SmithKline CorporationInventor: Ivan Lantos
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Patent number: 4096247Abstract: A new series of lower alkyl ethers of S-tri-lower-alkylphosphinegold 1-thio-.beta.-D-glucopyranoside has been prepared and found to have anti-arthritic activity and, in particular, are of use in the treatment of rheumatoid arthritis.Type: GrantFiled: February 16, 1977Date of Patent: June 20, 1978Assignee: SmithKline CorporationInventor: Ivan Lantos
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Patent number: 4096248Abstract: A new series of lower alkyl sulfonyl esters of S-tri-lower-alkylphosphinegold 1-thio-.beta.-D-glucopyranosides has been prepared and found to have anti-arthritic activity and, in particular, are of use in treating rheumatoid arthritis.Type: GrantFiled: February 16, 1977Date of Patent: June 20, 1978Assignee: SmithKline CorporationInventor: Ivan Lantos