Patents Examined by Y. N. Gupta
  • Patent number: 5342936
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: August 30, 1994
    Inventors: David Parker, Michael A. W. Eaton
  • Patent number: 5342935
    Abstract: Hydroxymacrolides and derivatives of the general structural Formula I: ##STR1## have been prepared from suitable precursors by oxidation at C-20. These macrolides are useful as antagonists of FK-506-type immunosuppressants. The compounds of the present invention are useful for modifying dosages of FK-506-type immunosuppressants in the treatment of autoimmune diseases, infectious diseases and/or the prevention of rejection of foreign organ transplants. In addition, the compounds of the present invention have utility as antidotes for overdoses of FK-506-type immunosuppressants.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: August 30, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Thomas R. Beattie, Matthew J. Wyvratt, Francis J. Dumont
  • Patent number: 5336706
    Abstract: The present invention relates to novel piperidine-triazine compounds of the formula (I) ##STR1## in which R.sub.1 is e.g. hydrogen or methyl, A.sub.1 is e.g. >N--CH.sub.3, R.sub.2 is e.g. --(CH.sub. 2).sub.2-6 --, R.sub.3 is e.g. 2,2,6,6-tetramethyl-4-piperidyl or 1,2,2,6,6-pentamethyl-4-piperidyl, or --A.sub.1 --R.sub.2 -- is a direct bond and, in this case, R.sub.3 is e.g. a group ##STR2## is a group of the formula (IVa) or (IVc) ##STR3## q and m are e.g. zero, X.sub.1 is e.g. a group of the formula (Va)--A.sub.4 --R.sub.9 --A.sub.5 -- (Va)in which A.sub.4 and A.sub.5 which are identical or different are e.g. an >N--R.sub.8 group where R.sub.8 is e.g. hydrogen, 2,2,6,6-tetramethyl-4-piperidyl or 1,2,2,6,6-pentamethyl-4-piperidyl, R.sub.9 is e.g. --(CH.sub.2).sub.2-6 --, n is e.g. a number from 1 to 10, Y.sub.1 is e.g. OH, ONa, OK or a group --X.sub.1 Z with Z being hydrogen or methyl and Y.sub.2 is e.g. hydrogen or methyl.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: August 9, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Valerio Borzatta, Roberto Scrima, Graziano Vignali
  • Patent number: 5334600
    Abstract: The compounds of the formula ##STR1## wherein R represents hydrogen, lower alkyl, aryl, biaryl, C.sub.3 -C.sub.7 -cycloalkyl, aryl-lower alkyl, aryl-lower alkenyl, aryl-lower alkynyl, aryloxy-lower alkyl, arylthio-lower alkyl, C.sub.3 -C.sub.7 -cycloalkyl-lower alkyl, biaryl-lower alkyl, aryl-C.sub.3 -C.sub.7 -cycloalkyl, aryl-C.sub.3 -C.sub.7 -cycloalkyl-lower alkyl or aryloxy-aryl-lower alkyl; and aryl represents carbocyclic or heterocyclic aryl; Z represents C.sub.1 -C.sub.3 -alkylene or vinylene, each unsubstituted or substituted by lower alkyl; Y represents SO.sub.2 (sulfonyl) or CO (carbonyl); A represents .sub.0 (oxygen), S (sulfur), or a direct bond; B represents lower alkylene; or B represents lower alkenylene or lower alkynylene provided that A represents a direct bond; X represents oxygen or sulfur, R.sub.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: August 2, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: John H. Van Duzer, Dennis M. Roland
  • Patent number: 5332737
    Abstract: This invention concerns novel compounds of the formula I: ##STR1## in which P is a group of formula II or a group of formula III; R.sup.1 is alkyl, cycloalkyl, cycloalkylalkyl, phenyl or phenylalkyl; R.sup.2 is hydrogen, alkyl, amino or alkylamino; R.sup.3 and R.sup.4 are independently hydrogen, alkyl, phenyl or benzyl; R.sup.6 is alkyl amino or alkylamino; C and D are independently ethylene or trimethylene; Z is a direct bond between C and D, or an oxy, thio, carbonyl, methylene, ethylenedioxymethylene, ethylidene, or isopropylidene link, or Z is a group of the formula .dbd.N.R.sup.5 in which R.sup.5 is alkyl, phenyl or benzyl; R8 is hydrogen, cycloalkylalkyl, alkyl, alkenyl, alkynyl or phenylalkyl; or R8 is a alkylene or alkenylene linked to the nitrogen atom of the group Q.A.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: July 26, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: Stuart D. Mills, Rodney B. Hargreaves, Bernard J. McLoughlin
  • Patent number: 5332816
    Abstract: The present invention relates to novel piperazine-piperidine compounds of the general formula (I) ##STR1## in which R.sub.1 is e.g. hydrogen or methyl, R.sub.2 is e.g. ethylene, m is zero or 1 and n is e.g. 1, and when n is 1, A is e.g. 2,2-dimethyl-1-propanoyl, n-butoxycarbonyl, n-tetradecyloxycarbonyl or 2,4-bis[N-butyl-(2',2',6',6'-pentamethyl-4'-piperidyl)amino]triazin-6-yl.The said compounds are effective as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: July 26, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Graziano Vignali, Valerio Borzatta
  • Patent number: 5332568
    Abstract: S-triazine derivatives of formula (I): ##STR1## a process for the preparation thereof and the use thereof as light stabilisers.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: July 26, 1994
    Assignee: 3V Inc.
    Inventor: Giuseppe Raspanti
  • Patent number: 5332759
    Abstract: The invention relates to compounds of the general formula (I): ##STR1## wherein R.sub.3 represents a group ##STR2## R.sub.1, R.sub.2, R.sub.6, R.sub.7 being as defined in the description. Medicinal product useful in treating a disorder due to vasodilatation of the vascular system.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: July 26, 1994
    Assignee: Adir et Compagnie
    Inventors: Patrick Depreux, Daniel Lesieur, Habib Abdellaoui, Beatrice Guardiola, Gerard Adam, Pierre Renard, Bruno Pfeiffer
  • Patent number: 5332745
    Abstract: The invention provides a fungicidal composition comprising a carrier and, as active ingredient, certain tetrahydropyrimidine derivatives of the general formula ##STR1## or an acid-addition salt or metal salt complex thereof, in which n is 0, 1, 2 or 3; R represents an optionally substituted alkyl, aryl or aralkyl group; R.sup.1 represents a hydrogen atom or an optionally substituted alkyl or aralkyl group; R.sup.2 represents an optionally substituted aryl group; p is 0 or 1; X represents a group --NR.sup.3 -- or --NR.sup.3 --NR.sup.3 -- where each R.sup.3 independently represents a hydrogen atom or an optionally substituted alkyl, aryl or aralkyl group or R.sup.1 and (X).sub.p --A--R.sup.2 together represent a group --(CR.sup.4 R.sup.5).sub.q --N(A--R.sup.2)-- where q is 2 or 3 and each of R.sup.4 and R.sup.5 is independently selected from a group consisting of hydrogen atoms and optionally substituted alkyl groups; and A represents a group --(CR.sup.6 R.sup.7).sub.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: July 26, 1994
    Assignee: Shell Research Limited
    Inventors: Paul A. Carter, Nicholas J. Daniels, Steven J. Tapp
  • Patent number: 5328928
    Abstract: This invention provides new N-acylated arylpyrroles effective for the control of insects, acarids, nematodes, fungi and mollusks and useful for the protection of growing plants from the destructive actions of said pests. The invention also provides pesticidal compositions containing the new N-acylated arylpyrroles and methods for the preparation of thereof.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: July 12, 1994
    Assignee: American Cyanamid Company
    Inventors: Roger W. Addor, Stephen F. Donovan, Robert E. Diehl, Kenneth A. Kremer
  • Patent number: 5329003
    Abstract: The invention deals with a process for the preparation of uretdione group containing polyisocyanates comprising reacting monomeric aromatic diisocyanates in the presence of a catalyst whereby imidazoles or benzimidazoles having general structure formulas I or II are used as catalysts ##STR1## or their mixtures are used whereby R.sup.1 through R.sup.7 have the meaning cited in claim 1.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: July 12, 1994
    Assignee: BASF Aktiengesellschaft
    Inventor: Bernd Bruchmann
  • Patent number: 5328896
    Abstract: A herbicidal sulphonylurea salt of the formula ##STR1## in which M.sup..sym. represents an alkali metal ion or the counterion, formed by protonation, of a basic organic nitrogen compound,R represents halogenoalkyl,R.sup.1 represents optionally substituted radicals from the series comprising alkyl, alkenyl, alkinyl or aralkyl,R.sup.2 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, halogenoalkylthio, amino, alkylamino or dialkylamino,X represents nitrogen or a --CH group,Y represents nitrogen or a --CR.sup.3 group where R.sup.3 represents hydrogen, halogen, cyano, alkyl, formyl, alkyl-carbonyl or alkoxy-carbonyl, andZ represents nitrogen or a --CR.sup.4 group where R.sup.4 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, alkylamino or dialkylamino.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: July 12, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jochem Riebel, Christa Fest, Rolf Kirsten, Joachim Kluth, Klaus-Helmut Muller, Dieter Feucht, Klaus Lurssen, Hans-Joachim Santel, Robert R. Schmidt
  • Patent number: 5324704
    Abstract: Disclosed are novel fluoran compounds represented by the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are different groups selected from cyclohexyl, n-butyl and isobutyl, e.g., in the form of crystals characterized by a specific X-ray diffraction diagram; crystalline toluene adducts thereof; and recording materials containing these fluoran compounds.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: June 28, 1994
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masakatsu Nakatsuka, Atsuo Otsuji, Kiyoharu Hasegawa, Masatoshi Takagi, Akihiro Yamaguchi
  • Patent number: 5324732
    Abstract: 1.5 Fumaric acid salts of N,N'-di-lower alkyl-substituted 9,9-alkylene-3,7-diazabicyclo[3.3.1 ]nonanes and a process for obtaining them in stoichiometrically pure and virtually non-hygroscopic form.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: June 28, 1994
    Assignee: Kali-Chemie Pharma GmbH
    Inventors: Uwe Schoen, Walter Heitmann, Uwe Maetzel
  • Patent number: 5324730
    Abstract: This invention relates to cyclobutane derivatives represented by the following general formula (1) and physiologically acceptable salts thereof: ##STR1## wherein B represents a nucleic acid base derivative, R.sup.1 and R.sup.2 independently represent hydrogen atom, dialkylaminoacyl group, 1,4-dihydro-1-methylnicotinoyl group or substituted phosphoric acid group, provided that either one of R.sup.1 and R.sup.2 is a group other than hydrogen atom.The compounds of this invention exhibit a high oral absorbability and are metabolized in vivo into the compounds of formula (1a). Accordingly, the compounds of this invention are expectedly useful as antiviral agent.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: June 28, 1994
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yuh-ichiro Ichikawa, Hiroshi Akaba, Yuka Sugawara, Hideo Sugimura, Kazuhisa Narita, Akira Shiozawa, Kouwa Yamashita, Sayuri Kato, Yukihiro Nishiyama, Kenichi Matsubara, Takemitsu Nagahata
  • Patent number: 5322847
    Abstract: A series of imidazo[4,5-c]pyridines which inhibit platelet activating factor (PAF) and also block leukotriene D4 receptors are useful in treating asthma, arthritis, psoriasis, gastrointestinal distress, myocardial infarction, stroke and shock.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: June 21, 1994
    Assignee: Pfizer Inc.
    Inventors: Anthony Marfat, James F. Eggler, Michael J. Fray, Kelvin Cooper
  • Patent number: 5321025
    Abstract: The invention concerns a bicyclic heterocyclic compound of the formula I ##STR1## wherein Q is an optionally substituted 10-membered bicyclic heterocyclic moiety containing 1 or 2 N's and a further O or S heteroatom;A.sup.1 is a direct link to X.sup.1 or (1-3C)alkylene;X.sup.1 is oxy, thio, sulphinyl, sulphonyl or imino;Ar is optionally substituted phenylene or pyridylene;R.sup.1 is (1-4C)alkyl, (3-4C)alkenyl or (3-4C)alkynyl; andR.sup.2 and R.sup.3 together form a group of the formula -A.sup.2 -X.sup.2 -A.sup.3 - which, together with the carbon atom to which A.sup.2 and A.sup.3 are attached, defines a ring having 5 to 7 ring atoms, wherein each of A.sup.2 and A.sup.3 is (1-3C)alkylene and X.sup.2 is oxy, thio, sulphinyl or sulphonyl;or a pharmaceutically-acceptable salt thereof.The compounds of the invention are inhibitors of the enzyme 5-lipoxygenase.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: June 14, 1994
    Assignees: Imperial Chemical Industries PLC, ICI Pharma
    Inventors: Pierre A. R. Bruneau, Graham C. Crawley
  • Patent number: 5321146
    Abstract: Tungsten carboxylate compounds useful for coating interdigitated electrodes used in hydrogen sulfide gas sensors are disclosed. A method of coating electrodes with the compounds using a precise solution casting technique such as spin-coating or casting, dip-casting or spray-casting techniques is also described. Electrodes which are solution coated with the compounds may be used to fabricate superior quality chemiresistor sensors for use in hydrogen sulfide gas sensing devices by heating the carboxylates above 350.degree. C. to decompose certain carboxylates to WO.sub.3 and others to sodium tungstate.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: June 14, 1994
    Assignee: Eastman Kodak Company
    Inventors: Tommie L. Royster, Jr., Gustavo R. Paz-Pujalt, Dilip K. Chatterjee, Carl A. Marrese
  • Patent number: 5318972
    Abstract: A pyrimidine nucleoside derivative and pharmaceutically acceptable salt thereof specified by the presence of ethyl group or isopropyl group at 5-position of the pyrimidine ring and the presence of a (substituted) phenylthio or a (substituted) benzyl group at 6-position of the pyrimidine ring is provided. The pyrimidine nucleoside derivative and pharmaceutically acceptable salt thereof show a markedly higher anti-retroviral activity than conventional analogous compounds and have a relatively low toxicity against the host cells, and therefore, are useful as an active ingredient of antiviral agent.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: June 7, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Tadashi Miyasaka, Hiromichi Tanaka, Erik D. A. De Clercq, Masanori Baba, Richard T. Walker, Masaru Ubasawa
  • Patent number: 5317021
    Abstract: Amino acid compounds of the formula: ##STR1## wherein the various symbols are as hereinafter described, which have inhibiting effect on enkephalinase.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: May 31, 1994
    Assignee: ONO Pharmaceutical Co., Ltd.
    Inventors: Masanori Kawamura, Yoshinobu Arai, Hideki Aishita