Patents Examined by Ceila Chang
  • Patent number: 6538142
    Abstract: A process for the preparation of 5-(3,5-dimethylphenoxymethyl)-2-oxazolidinone, which includes: a) reacting 3,5-dimethylphonel with epichlorohydrin to obtain a mixture of 1-(3,5-dimethylphenoxy)2,3-epoxy propane (1) and 1-(3,5-dimethylphenoxy)-3-chloro-2-propanol (2); b) reacting the mixture of (1) and (2) obtained from step (a) with benzylamine to obtain a first compound; c) reducing the first compound with hydrogen in presence of ammonia, to obtain a second compound; and d) reacting the second compound with dimethylcarbonate in the presence of a strong base to obtain 5-(3,5-dimethlphenoxymethyl)-2-oxazolidinone.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: March 25, 2003
    Assignee: Farchemia S.r.l.
    Inventors: Gabriele Breviglieri, Sergio Contrini, Giacomo Bruno, Cinzia Assanelli
  • Patent number: 6534684
    Abstract: A method for preparing tris[(1H,1H,2H,2H-perfluoroalkyl)aryl]phosphites consists in preparing a grignard reagent from an alkoxyhalogenobenzene, then reacting it with a iodo-1H,1H,2H,2H-perfluoroalkane; transforming the alkoxy function of (1H,1H,2H,2H,2H-perfluoroalkyl)alkoxybenzene obtained into a hydroxy function, then reacting (1H,1H,2H,2H-perfluoroalkyl)hydroxybenzene with PCl3. The invention also concerns fluorinated arylphosphites and their use as transition metal ligand for making catalysts to be used in two-phase catalysis with fluorinated phase.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: March 18, 2003
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Jean-Luc Couturier, Thomas Mathivet, Eric Monflier, Yves Castanet, André Mortreux
  • Patent number: 6534525
    Abstract: Novel 2-substituted piperidine analogs, pharmaceutical compositions containing the same and the method of using 2-substituted piperidine analogs as selectively active antagonist of N-methyl-D-aspartate (NMDA) receptor subtypes for treating conditions such as stroke, cerebral ischemia, central nervous system trauma, hypoglycemia, anxiety, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headaches, chronics pain, glaucoma, CMV retinitis, psychosis, urinary incontinence, opioid tolerance or withdrawal, or neurodegenerative disorders, such as lathyrism, Alzheimer's Disease, Parkinsonism and Huntington's Disease are described.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: March 18, 2003
    Assignees: Warner-Lambert & Company, Cocensys, Inc.
    Inventors: Christopher F. Bigge, John F. W. Keana, Sui Xiong Cai, Eckard Weber, Richard Woodward, Nancy C. Lan, Anthony P. Guzikowski
  • Patent number: 6534536
    Abstract: Alkylsulfonamido heterocyclic thrombin inhibitors are provided which have the structure wherein G is  wherein n is 0, 1 or 2 or 3; m is 0, 1, 2 or 3; Y is NH or S; R is hydrogen, hydroxyalkyl, aminoalkyl, alkyl, cycloalkyl, amidoalkyl, arylalkyl, alkenyl, aryl, alkynyl, arylalkoxyalkyl, or an amino acid side chain; R1 and R2 are independently hydrogen, lower alkyl, cycloalkyl, aryl, hydroxy, alkoxy, oxo, thioketal, thioalkyl, thioaryl, amino or alkylamino; or R1 and R2 can be taken together with the carbons to which they are attached to form a cycloalkyl, aryl or heteroaryl ring.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: March 18, 2003
    Assignee: Bristol-Myers Squibb Company
    Inventors: Spencer D. Kimball, Jagabandhu Das, Wan Fang Lau
  • Patent number: 6534680
    Abstract: Dicarboxylic acid crystals are prepared from a solution containing at least one organic dicarboxylic acid in a process in which at least one anionic polyelectrolyte having a molecular weight of at least 2000 is added to the solution before or during the crystallization.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: March 18, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Rauls, Dieter Baumann, Hermann Wistuba, Bernhard Otto
  • Patent number: 6531609
    Abstract: The present invention is concerned with a novel process for the preparation of compounds of formula I comprising bromomethylation or chloromethylation of a compound of formula II and subsequent reaction with a compound of formula IV The compounds of formula I and the corresponding salts, e.g. the sodium salts, are pharmaceutically active substances.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: March 11, 2003
    Assignee: Hoffmann-LA Roche Inc.
    Inventor: Michelangelo Scalone
  • Patent number: 6531604
    Abstract: The invention provides compounds of the formula: wherein the ring A is an optionally substituted benzene ring; R1 is an optionally substituted non-aromatic heterocyclic group; R2 and R3 are independently hydrogen atom or an optionally substituted hydrocarbon group; n is an integer of 0-3; or salts thereof, which are useful as medicines having an osteogenesis promoting effect and chondrogensis promoting effect. The present invention relates to an amine compound having an excellent effect of inhibiting production and/or secretion of amyloid-b protein, a production and use thereof. Especially, it is effective for preventing and/or treating, for example, neurodegenerative diseases, amyloid angiopathy, neurological disorders caused by cerebrovascular disorders, and so forth.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: March 11, 2003
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Tsuneo Yasuma, Haruhiko Makino, Akira Mori
  • Patent number: 6531624
    Abstract: A process for producing a benzoylacrylic acid derivative (formula 1) in high yield through a small number of steps and a simple purification step. The process comprises reacting 2,4,5-trifluoro-3-methyl-6-nitrobenzoyl chloride with a compound (formula 2) to yield an aminoacrylic acid derivative (formula 1) and then reacting the aminoacrylic acid derivative (formula 1) with an amine derivative represented by R2—NH2, wherein R2 is a cycloalkyl group or the like.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: March 11, 2003
    Assignees: Asahi Glass Company Ltd., Katayama Seiyakusyo Co., Ltd.
    Inventors: Naoto Morita, Takashi Inagaki
  • Patent number: 6528533
    Abstract: The present invention relates to azo amino acid derivatives for treating or preventing neuronal damage associated with neurological diseases. The invention also provides compositions comprising the compounds of the present invention and methods of utilizing those compositions for treating or preventing neuronal damage.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: March 4, 2003
    Assignee: Vertex Pharmaceuticals, Incorporated
    Inventors: David Lauffer, Michael Mullican
  • Patent number: 6528663
    Abstract: A method for the synthesis of substituted phthalic anhydrides (IV) wherein R′ is a halogen, aromatic or aliphatic group comprising 1-18 carbons, hydrogen or nitro group is the transimidation between a substituted N-alkyl phthalimide (V) wherein R is an alkyl having from 1 to 18 carbons, and a substituted tetrahydrophthalic anhydride (VI): The by-product of this reaction, a substituted N-alkyl tetrahydrophthalimide (VII), may be converted by aromatization to the substituted N-alkyl phthalimide (V).
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: March 4, 2003
    Assignee: General Electric Company
    Inventors: Roy Ray Odle, Thomas Link Guggenheim
  • Patent number: 6525069
    Abstract: The present application describes modulators of CCR3 of formula (I): or pharmaceutically acceptable salt forms thereof, useful for the prevention of asthma and other allergic diseases.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: February 25, 2003
    Assignee: Bristol-Myers Squibb Pharma Co.
    Inventors: Soo S. Ko, George V. Delucca, John V. Duncia, Ui Tae Kim, Dean A. Wacker, Changsheng Zheng
  • Patent number: 6525020
    Abstract: Carrier compounds and compositions therewith which are useful in the delivery of active agents are provided. Methods of administration and preparation are provided as well.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: February 25, 2003
    Assignee: Emisphere Technologies, Inc.
    Inventors: Andrea Leone-Bay, Eric Wang, Donald J. Sarubbi, Harry Leipold, Koc-Kan Ho, David Gschneidner
  • Patent number: 6521657
    Abstract: This invention relates to compounds which are agonists of the progesterone receptor which have the general structure: wherein: R1, R2, R3, R4, R5 and Q1 are as defined herein, or a pharmaceutically acceptable salt thereof, as well as methods of using these compounds to induce contraception or treat progesterone-related carcinomas and adenocarcinomas.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: February 18, 2003
    Assignees: Wyeth, Ligand Pharmaceuticals, Inc.
    Inventors: Andrew Fensome, Puwen Zhang, Marci C. Koko, Lin Zhi, Todd K. Jones, Jay E. Wrobel, Christopher M. Tegley, James P. Edwards, Edward G. Melenski
  • Patent number: 6521666
    Abstract: The present invention relates to a pharmaceutical composition comprising as an active ingredient a compound of formula (I), wherein Ring A is an aromatic or a heterocyclic ring; Q is a bond, carbonyl, lower alkylene, lower alkenylene, —O-(lower alkylene)-, etc.; n is 0, 1 or 2; Z is oxygen or sulfur, W is oxygen, sulfur, —CH═CH—, —NH— or —N═CH—; R1, R2 and R3 are the same or different and are hydrogen, halogen, hydroxyl, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted lower alkoxy group, a substituted or unsubstituted amino group, etc.; R4 is tetrazolyl, carboxyl group, amide or ester; R5 is hydrogen, nitro, amino, hydroxyl, lower alkanoyl, lower alkyl etc.; R6 is selected from (a) a substituted or unsubstituted phenyl group, (b) a substituted or unsubstituted pyridyl group, (c) a substituted or unsubstituted thienyl group, (d) a substituted or unsubstituted benzofuranyl group, etc.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: February 18, 2003
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ila Sircar, Kristjan S. Gudmundsson, Richard Martin
  • Patent number: 6518285
    Abstract: Piperidinyloxy, pyrrolidinyloxyl and azetidinyloxy compounds of the formula: wherein R1 is a piperidinyl, pyrrolidinyl or azetidinyl moiety as described herein and in which the substituents have the meaning indicated in the description. These compounds are useful as antibacterial agents.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: February 11, 2003
    Assignee: Ortho McNeil Pharmaceutical, Inc.
    Inventors: Michele A. Weidner-Wells, Christine Boggs, Dennis Hlasta, Erin Nelson
  • Patent number: 6518280
    Abstract: Imidazonaphthyridine compounds that are unsubstituted at the 2-position induce the biosynthesis of cytokines such as interferon and tumor necrosis factor. The compounds exhibit antiviral and antitumor properties. Methods of preparing the compounds and intermediates useful in the preparation of the compounds are also disclosed.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: February 11, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: John F. Gerster, Kyle J. Lindstrom
  • Patent number: 6518295
    Abstract: The present invention relates to the use of derivatives of aryl (or heteroaryl) azolylcarbinols of general formula (1) of the specification, as well as their physiologically acceptable salts, in the manufacture of medicaments, useful in human and/or veterinary therapy, for the treatment of disorders that are mediated by an excess of substance P, and especially disorders of the central nervous system such as anxiety, depression, schizophrenia, manic depressive psychosis, sexual dysfunction, drug addiction, cognitive disorders, and locomotive disorders.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: February 11, 2003
    Assignee: Laboratorios del Dr. Esteve, S.A.
    Inventors: Ramón Merce-Vidal, Jordi Frigola-Constansa
  • Patent number: 6515180
    Abstract: The invention relates to a method for symmetrically disubstituting carboxylic acid amides on the geminal carbonyl-C-atom using grignard reagents in the presence of a metal alcoholate compound used as a catalyst and in the presence of another organometalic compound used as a co-catalyst.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: February 4, 2003
    Assignee: Merck Patent Gesellschaft
    Inventors: Herwig Buchholz, Urs Welz-Biermann, Armin Meijere
  • Patent number: 6515143
    Abstract: The invention relates to a process for the preparation of ortho-alkylated benzoic acid derivatives of the formula I characterized in that an aryl bromide of the formula II is reacted with a secondary or tertiary organolithium compound and CO2.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: February 4, 2003
    Assignee: Merck KGaA
    Inventors: Ekkehard Bartmann, Ingeborg Stein
  • Patent number: 6515131
    Abstract: Generally, the present invention is directed to central nervous system dopamine transporter-imaging agents and methods of use thereof. In certain embodiments, the present invention relates to radiolabeled piperidine derivatives for use as imaging agents in the diagnosis of Parkinson's disease. Another aspect of the present invention relates to piperidine monoamine transporter ligands, comprising a functional group capable of chelating a radionuclide, e.g., technetium, and methods of use thereof.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: February 4, 2003
    Assignee: Biostream Therapeutics, Inc.
    Inventors: John W. Babich, Miles P. Smith