Patents Examined by Sonya N. Wright
  • Patent number: 6248897
    Abstract: The present invention relates to a novel method for producing a compound of the formula [11] wherein R is an optionally substituted aromatic hydrocarbon group, an optionally substituted alicyclic hydrocarbon group, an optionally substituted heterocyclic group or an optionally substituted condensed heterocyclic group, which is useful as a therapeutic agent for diabetes. The method of the present invention is an industrially utilizable method that enables efficient production of the objective compound [11] from &bgr;-methyl L-aspartate via an important intermediate compound [6] wherein R is as defined above, at high yield.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: June 19, 2001
    Assignee: Japan Tobacco Inc.
    Inventors: Koji Ando, Masanobu Suzuki
  • Patent number: 6245790
    Abstract: Azole compounds of the formula: wherein R1 is lower alkyl substituted with carboxy, etc., R2 is hydrogen or lower alkyl, R3 is aryl, etc. R4 is aryl, etc. Q is  etc., and X is O, NH or S, and its salt, which are useful as medicament.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: June 12, 2001
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kouji Hattori, Osamu Okitsu, Naoaki Fujii, Akira Tanaka, Kiyoshi Taniguchi, Satoshi Koyama, Mie Nishio
  • Patent number: 6235736
    Abstract: A 3-anilino-2-cycloalkenone derivative of the formula (I): wherein, R1 represents a C1 to C8 alkyl group, which may have a substituent, except for a methyl group, a C3 to C7 cycloalkyl group, a 3-tetrahydrofuryl group, an 2-indanyl group, etc., R2 represents a C1 to C4 alkyl group, R3 represents a hydrogen atom, a C3 to C7 alkyl group, which may have a substituent, a C3 to C7 cycloalkyl group, etc., R4 represents a hydrogen atom, a C1 to C5 alkyl group, which may have a substituent, a halogen atom, etc., R5, R6, R7, and R8 independently represent a hydrogen atom, a C1 to C5 alkyl group, which may have a substituent, etc., X represents —(CR11R12)n—, wherein n is 0 to 2, R11 and R12 independently represent a hydrogen atom, a C1 to C5 alkyl group, which may have a substituent, etc.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: May 22, 2001
    Assignee: Nikken Chemicals Co., Ltd.
    Inventors: Shinji Ina, Kenjirou Yamana, Kyoji Noda, Akane Takahama, Toshihiko Akiyama
  • Patent number: 6235763
    Abstract: The invention relates to polycyclc 2-aminodihydrothiazole systems and their physiologically tolerated salts and physiologically functional derivatives. Compounds of the formula I, in which the radicals have the stated meanings, and their physiologically tolerated salts and processes for their preparation are described. The compounds are suitable, for example, as anorectics.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: May 22, 2001
    Assignee: Aventis Pharma Deutschland GmbH
    Inventors: Gerhard Jaehne, Karl Geisen, Hans-Jochen Lang, Martin Bickel
  • Patent number: 6235728
    Abstract: Water soluble prodrugs of azole antifungal agents are provided by quaternizing a nitrogen atom of the azole ring with a phosphonooxymethyl group.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: May 22, 2001
    Assignee: Bristol-Myers Squibb Company
    Inventors: Jerzy Golik, John D. Matiskella, Yasutsugu Ueda
  • Patent number: 6228853
    Abstract: According to the invention are provided compounds of formula (I) (relative stereochemistry indicated) wherein R1, R2 and R3 are as defined in the specification. Compounds of formula (I) are useful inter alia in the treatment of inflammatory diseases of the respiratory tract.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: May 8, 2001
    Assignee: Glaxo Wellcome Inc.
    Inventors: Michael Dennis Dowle, Harry Finch, Lee Andrew Harrison, Graham George Adam Inglis, Martin Redpath Johnson, Simon John Fawcett MacDonald
  • Patent number: 6221877
    Abstract: The use of certain heterocyclic derivatives for treating parasitic protozoa infections in mammals, in particular bovine trichomoniasis and giardiasis, is disclosed.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: April 24, 2001
    Assignee: Regents of the University of California
    Inventors: Alex M. Aronov, Narsimha R. Munagala, Paul R. Ortiz de Montellano, Irwin D. Kuntz, Ching C. Wang
  • Patent number: 6211395
    Abstract: The invention relates to a process of preparing a chiral compound of the formula: wherein R1 is selected from the group consisting of hydrogen and lower alkyl, and R2 and R2′ are the same, and R2 and R2′ are selected from a group consisting of hydrogen and primary alkyl, or R2 and R2′ taken together form a C3 to C6 cycloalkyl, comprising the steps of chirally reducing a &bgr;-keto ester to afford a &bgr;-hydroxy ester, activating the &bgr;-hydroxy ester by treatment with a sulfonic acid or a derivative thereof to provide an activated compound having sulfonate leaving group, displacing the sulfonate leaving group with an azido moiety, or treating the activated compound with an alkylamine, deprotecting and cyclizing to afford a pyrrolidinone, and reducing the pyrrolidinone to afford a stereoisomerically preferred 3-aminopyrrolidine derivative.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: April 3, 2001
    Assignee: Abbott Laboratories
    Inventors: Daniel J. Plata, Steven A. King, Frederick A. Plagge, Anne E. Bailey, Louis Seif
  • Patent number: 6204388
    Abstract: The present invention provides convergent processes for preparing epothilone A and B, desoxyepothilones A and B, and analogues thereof, useful in the treatment of cancer and cancer which has developed a multidrug-resistant phenotype. Also provided are intermediates useful for preparing said epothilones.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: March 20, 2001
    Assignee: Sloan-Kettering Institute For Cancer Research
    Inventors: Samuel J. Danishefsky, Peter Bertinato, Dai-Shi Su, DongFang Meng, Ting-Chao Chou, Ted Kamenecka, Erik J Sorensen, Aaron Balog, Kenneth A. Savin, Scott Kuduk, Christina Harris, Xiu-Guo Zhang, Joseph R. Bertino
  • Patent number: 6197974
    Abstract: The invention relates to a process of preparing a chiral compound of the formula: wherein R1 is selected from the group consisting of hydrogen and lower alkyl, and R2 and R2′ are the same, and R2 and R2′ are selected from a group consisting of hydrogen and primary alkyl, or R2 and R2′ taken together form a C3 to C6 cycloalkyl, comprising the steps of chirally reducing a &bgr;-keto ester to afford a &bgr;-hydroxy ester, activating the &bgr;-hydroxy ester by treatment with a sulfonic acid or a derivative thereof to provide an activated compound having sulfonate leaving group, displacing the sulfonate leaving group with an azido moiety, or treating the activated compound with an alkylamine, deprotecting and cyclizing to afford a pyrrolidinone, and reducing the pyrrolidinone to afford a stereoisomerically preferred 3-aminopyrrolidine derivative.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: March 6, 2001
    Assignee: Abbott Laboratories
    Inventors: Daniel J. Plata, Steven A. King, Frederick A. Plagge, Anne E. Bailey, Louis Seif
  • Patent number: 6197967
    Abstract: Compounds of the formula (I) are prepared by reacting a compound of the formula (V) with a compound of the formula (X) and hydrolyzing the product; or converting the compound of the formula (V) into the hydrazide, and cyclizing and hydrolyzing the latter to give the oxadiazole. para-Oxadiazolylphenylboronic acids are valuable precursors for active ingredients.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: March 6, 2001
    Assignee: Clariant GmbH
    Inventors: Frank Vollmueller, Steffen Haber, Andreas Meudt, Antje Noerenberg, Stefan Scherer
  • Patent number: 6180568
    Abstract: A 4-aryl-4-substituted pyrazolidine-3,5-dione derivative represented by the formula (1) is useful as an effective component of a miticide, insecticide or herbicide wherein R1 and R2 are each independently alkyl group having 1 to 4 carbon atoms, or R1 and R2, when taken together, represent saturated or unsaturated bivalent hydrocarbon group having 3 or 4 carbon atoms which may optionally be substituted with alkyl group having 1 to 4 carbon atoms, or halogen atom, X is alkyl group having 1 to 4 carbon atoms, haloalkyl group having 1 to 4 carbon atoms or halogen atom, Y is halogen atom or nitro group, and n is an integer of 0 to 3.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: January 30, 2001
    Assignee: Otsuka Kagaku Kabushiki Kaisha
    Inventors: Nobuyoshi Takahashi, Hirofumi Nakagawa, Yoshinori Endo
  • Patent number: 6180637
    Abstract: The invention relates to 1,2,5-trisubstituted 1,2-dihydroindazol-3-ones of formula (I) wherein X is —SO2—, —SO—, —(CH2)p—, —(CH2)p—O—, —(CH2)p—(C═O)—, —(CH2)p—(C═O)—NH—, —(CH2)p—CHOH—, —CHOH—(CH2)p—, —(CH2)p—CH═CH—, —CH═CH—(CH2)p—, Y is —(C═O)—, —(C═O)—NH—, —(C═O)—NH—(CH2)p—, —C═O)—(CH2)p—, —(CH2)p—, —(CH2)p—O—, —(CH2)p—(C═O)—, —(CH2)p—(C═O)—NH—, —(CH2)p—(C═O)—NH—(CH2)p—, —(CH2)p—CHOH—, —CHOH—(CH2)p—, —(CH2)p—CH═CH—, —CH═CH—(CH2)p—, Z is —O—, —O—(CH2)p—, —NH—, —NH—(
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: January 30, 2001
    Assignee: Arzneimittelwerk Dresden GmbH
    Inventors: Rudolf Schindler, Norbert Höfgen, Hildegard Poppe, Kay Brune
  • Patent number: 6177574
    Abstract: Disclosed is a process for the preparation of a mixture of benzoxazolyl-stilbene compounds by the reaction of unsubstituted 4,4′-bis(benzoxazol-2-yl)stilbene with a substituted o-aminophenol or o-aminonaphthol to obtain a mixture comprising the unsubstituted 4,4′-bis(benzoxazol-2-yl)stilbene and at least one substituted 4,4′-bis(benzoxazol-2-yl)stilbene, 4-naphthoxazol-2-yl-4′-benzoxazol-2-ylstilbene and/or 4,4′-bis(naphthoxazol-2-yl)stilbene. These mixtures are useful as fluorescent brightening agents and light stabilizers for synthetic polymeric materials such as polyesters, polyamide and polyolefin textile materials and shaped articles.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: January 23, 2001
    Assignee: Eastman Chemical Company
    Inventor: Kim Steven Chamberlin
  • Patent number: 6166217
    Abstract: Process for the production of alkoxycarbonyldipeptides intermediates in the synthesis of the lisinopril which comprises protecting both amino functions of the L-lysine with an alkoxycarbonyl group, subsequently making the N-carboxyanhydride of the N6-[alkoxycarbonyl]-L-lysine by treatment with thionyl chloride and making the desired alkoxycarbonyldipeptide by reaction with L-proline in alkaline medium.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: December 26, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Vincenzo Cannata, Valeriano Merli, Stefano Saguatti
  • Patent number: 6166224
    Abstract: A method for racemization of an optically active N-substituted azetidine-2-carboxylic acid ester of the formula (1): ##STR1## wherein * represents an asymmetric carbon atom, R.sup.1 represents an aryl,R.sup.2 represents a saturated hydrocarbon group which may be substituted,which is characterized byheating the ester at 100.degree. C. or higher, orsubjecting the ester to contact with a basic compound selected from an alkali metal hydride, an alkali metal alcoholate of tertiary alcohol and an organic amine.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: December 26, 2000
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Norihiko Hirata, Isao Kurimoto
  • Patent number: 6166023
    Abstract: The invention relates to 1,5- and 3-O-substituted 1H-indazoles of formula (I) ##STR1##
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: December 26, 2000
    Assignee: Arzneimittelwerk Dresden GmbH
    Inventors: Rudolf Schindler, Norbert Hofgen, Hildegard Poppe, Kay Brune
  • Patent number: 6162945
    Abstract: A process for preparing methyl 2-(2-methylphenyl)-3-methoxyacrylate (I) by formylation of methyl 2-methylphenylacetate (II) ##STR1## in an inert solvent in the presence of a base, and subsequent methylation of the enolate III formed ##STR2## where M.sup.+ is an alkali metal cation.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: December 19, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Keil, Josef Wahl
  • Patent number: 6156746
    Abstract: Inhibition of farnesyl transferase, which is an enzyme involved in ras oncogene expression, is effected by compounds of the formula ##STR1## and their enantiomers, diastereomers, and their pharmaceutically acceptable salts, including prodrugs and solvates thereof.The compounds of formula I are useful in the treatment of a variety of cancers. In addition, the formula I compounds may also be useful in the treatment of diseases other than cancer.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: December 5, 2000
    Assignee: Bristol-Myers Squibb Company
    Inventors: Katerina Leftheris, John T. Hunt, Charles Z. Ding
  • Patent number: 6153765
    Abstract: A process for producing 2-azabicyclo[2.2.1]hept-5-en-3-one is provided by reacting a sulfonyl cyanide represented by the general formula R--SO.sub.2 CN (in which R represents an alkyl group or a phenyl group which may have a substituent), in the presence of water and in a hydrocarbon solvent at a pH of 4 to 7 inclusive. 2-Azabicyclo[2.2.1]hept-5-en-3-one can be produced in a high yield and a high purity in one step process, with a reduced amount of solvent used, safely and with good productivity. A method of crystallizing 2-azabicyclo[2.2.1]hept-5-en-3-one is also provided, which includes dissolving 2-azabicyclo[2.2.1]hept-5-en-3-one into an organic solvent mainly including at least one of diisopropyl ether and methyl tertiary butyl ether, cooling the solution to deposit crystals of 2-azabicyclo[2.2.1]hept-5-en-3-one. Finely divided particulate crystals of 2-azabicyclo[2.2.1]hept-5-en-3-one excellent in fluidity and handleability can be obtained with a simple procedure and in a high recovery rate.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: November 28, 2000
    Assignee: Kuraray Co., Ltd.
    Inventors: Takashi Fukumoto, Rensuke Ikarashi