Patents Examined by John Kight
  • Patent number: 5994590
    Abstract: A process for producing 7-octen-1-al by isomerization of 2,7.octadien-1-ol by feeding 2,7-octadien-1-ol and hydrogen to a reaction zone in the presence of a copper catalyst while controlling the molar ratio of 2,7-octadien-1-ol to hydrogen within a range of 99/1 to 75/25, and effecting isomerization in the gaseous phase. This process ensures a high yield, a high selectivity and stable operation over a long period of time.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: November 30, 1999
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomoyasu Tsuda, Yasuo Tokitoh, Kazunori Watanabe, Takashi Hori
  • Patent number: 5990127
    Abstract: The invention relates to the preparation of the compound 4-(4-(4-(hydroxydiphenyl)-1-piperidinyl)-1-hydroxybutyl)-.alpha.,.alpha.-d imethylphenylacetic acid and its phosphorylated derivatives. These compounds can be prepared from .alpha.-(p-tert-butylphenyl)-4-(.alpha.-hydroxy-.alpha.-phenylbenzyl)-1-pi peridinylbutanol with the aid of fungi of the genus Cunninghamella or Absidia. The compounds according to the present invention can be used as pharmaceuticals for the treatment of allergic disorders, allergic rhinitis or asthma. Compounds of the formula II in which R.sup.1 is --CH.sub.2 --O--P(O)(OH).sub.2 and R.sup.2 is --OH; R.sup.1 is --CH.sub.3 and R.sup.2 is --O--P(O)(OH).sub.2 ; orR.sup.1 is --COOH and R.sup.2 is --O--P(O)(OH).sub.2 are produced by the process according to the present invention and are suitable as pharmaceuticals with antihistamine action.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: November 23, 1999
    Assignee: Hoechst Marion Roussel Deutschland GmbH
    Inventors: Johannes Meiwes, Manfred Worm
  • Patent number: 5990126
    Abstract: A class of quinolinic sulfide derivatives of formula I are potent and specific antagonists at the strychnine insensitive glycine bitding site on the NMDA receptor complex with an pharmacological advantageous profile. They may be useful in treatment or prevention of neuro-degenerative disorders. Particularly, the compounds included in the present invention are especially useful for minimizing damage of the central nervous system arising as a consequence of ischemic or hypoxic condition such as stroke, hypoglycemia, cerebral ischemia, cardiac arrest, and physical trauma. They are also useful in prevention of chronic neurodegenerative disorders including epilepsy, Alzheimer's disease, Huntington's disease and Parkinsonism. By virtue of their NMDA receptor antagonist properties, the present compounds may also use as anticonvulsant, analgesic, antidepressant, anxiolytic, and antischizophrenic agent. Formula I ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R are defined in specification.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: November 23, 1999
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: No Sang Park, Churl Min Seong, Young Sik Jung, Jin Il Choi, Chang Woo Lee, Yong Jun Chung, Seung Won Choi, Jae Yang Kong, Woo Kyu Park
  • Patent number: 5990131
    Abstract: This invention relates to neurotrophic low molecular weight, small molecule heterocyclic thioesters and ketones having an affinity for FKBP-type immunophilins, and their use as inhibitors of the enzyme activity associated with immunophilin proteins, particularly peptidyl-prolyl isomerase, or rotamase, enzyme activity.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: November 23, 1999
    Assignee: Gpi Nil Holdings Inc.
    Inventors: Gregory S. Hamilton, Jia-He Li
  • Patent number: 5990049
    Abstract: A triketone compound of the following formula: ##STR1## wherein Y.sup.1 is C.sub.1 to C.sub.4 alkyl, a halogen or a C.sub.1 to C.sub.4 haloalkyl; each of Y.sup.2 and Y.sup.3 is independently C.sub.1 to C.sub.4 alkyl; Y.sup.4 is hydrogen, C.sub.1 to C.sub.4 alkyl or a halogen; n is 0, 1 or 2; p is 0 or 1; each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently hydrogen, C.sub.1 to C.sub.4 alkyl or phenyl; or when p is 1, either R.sup.1 or R.sup.2 and either R.sup.3 or R.sup.4 optionally bond to each other to form an intramolecular double bond; and X is a group of the formula ##STR2## in which each of R.sup.5 and R.sup.6 is independently a hydrogen atom, a C.sub.1 to C.sub.4 alkyl group or a phenyl group. The triketone compound is useful as a herbicide to control a broad range of upland weeks at a low dosage without causing phytotoxicity on corn.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: November 23, 1999
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazufumi Nakamura, Mitsuru Shibata, Kazuyoshi Koike
  • Patent number: 5985880
    Abstract: A method of reducing, treating or preventing drug-mediated respiratory depression in an animal, incident to the administration to said animal of a respiratory depression-mediating drug, comprising administering to the animal receiving said drug an effective amount of a .delta. receptor agonist compound.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: November 16, 1999
    Assignee: Delta Pharmaceuticals
    Inventors: Kwen-Jen Chang, Robert W. McNutt, Jr., Hugh O. Pettit, Michael J. Bishop
  • Patent number: 5985864
    Abstract: Donepezil hydrochloride, 1-benzyl-4-[(5,6-dimethoxy-1-indanon)-2-yl]methylpiperidine hydrochloride, is provided here in the form of four polymorphs which are stable against heat and humidity in the pharmaceutical use. They can be industrially produced. They are specified by peaks in X-ray powder diffraction pattern and absorption peaks in infrared absorption spectra in potassium bromide.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: November 16, 1999
    Assignee: Eisai Co., Ltd.
    Inventors: Akio Imai, Hideaki Watanabe, Takashi Kajima, Yasushi Ishihama, Akiyo Ohtsuka, Tomohide Tanaka, Yukio Narabu
  • Patent number: 5981767
    Abstract: The present invention is relative to a method of producing dry thioctic acid in which a raw material in which concentrated thioctic acid is present is treated with liquid or supercritical CO.sub.2, thus yielding thioctic acid with low residual solvent contents in a simple industrial method.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: November 9, 1999
    Assignee: Asta Medica Aktiengesellschaft
    Inventors: Herbert Tanner, Karlheinz Drauz, Gerhard Sator, Horst Bethge, Roland Moller, Frank Hubner, Thomas Tacke, Claus Rehren
  • Patent number: 5981548
    Abstract: Compositions including as active ingredients cyclical hydroxylamines of the formula (I) are usefull for treating and preventing pathologies concerned with over production of oxygen-centered free radicals and as foodstuff and cosmetic additives for preventing lipoperoxydation.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: November 9, 1999
    Assignee: Moreno Paolini
    Inventors: Moreno Paolini, Gian Franco Pedulli
  • Patent number: 5981773
    Abstract: A process for forming perylene-3, 4-dicarboxylic anhydrides by reacting a corresponding perylene-3,4:9, 10-tetracarboxylic dianhydride with a sterically hindered amine, as a base, at an elevated temperature.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: November 9, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Heinz Langhals, Petra Christa Von Unold, Markus Speckbacher
  • Patent number: 5981807
    Abstract: A process for producing optically active 2-halo-1-(substituted phenyl)ethanol of a formula (Ia) or optically active styrene oxide of a formula (Ib). The process comprises the steps of reacting a compound of a formula (II) with phthalic anhydride to give a compound of a formula (III), performing optical resolution on the resulting compound using an optically active organic amine as a resolving agent, and finally performing hydrolysis or alcoholysis on the optically resolved compound (Ia) or (Ib). The scheme of the above process is: wherein X represents a halogen atom, Y represents a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.6 alkyl group, a C.sub.1 -C.sub.6 alkoxy group, a C.sub.1 -C.sub.6 haloalkyl group or a C.sub.1 -C.sub.6 haloalkoxy group, Z represents a hydrogen atom, a halogen atom or a C.sub.1 -C.sub.6 alkyl group, n is 0 or an integer of 1 to 3 and m is 0 or an integer of 1 to 2. The resulting optically active compounds are useful as an intermediate for medicines.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: November 9, 1999
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Hiroki Kodama, Takuya Motokawa, Hiroshi Yamaguchi, Masanori Yoshida
  • Patent number: 5977383
    Abstract: The instant invention provides improved processes for preparing benzothiophenes utilizing cation exchange resins.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: November 2, 1999
    Assignee: Eli Lilly and Company
    Inventors: Jeffrey Thomas Vicenzi, Tony Yantao Zhang
  • Patent number: 5977099
    Abstract: The invention relates to a pharmaceutical composition comprising mirtazapine, a selective serotonin reuptake inhibitor (SSRI) and pharmaceutically acceptable auxiliaries. In particular the SSRI is selected from fluoxetine, fluvoxamine, citalopram, cericlamine, femoxetine, sertraline, paroxetine, ifoxetine, cyanodothiepin and litoxetine. The composition which can be used to treat depressant patients has less side effects than treatment of the patients with mirtazapine or the SSRI alone.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: November 2, 1999
    Assignee: Akzo Nobel, N.V.
    Inventor: Victor Johannes Nickolson
  • Patent number: 5972330
    Abstract: A bait for controlling parasite pests, particularly insects, including a hydrated gelling agent and an active material such as a 1-arylpyrazole derivative.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: October 26, 1999
    Assignee: Rhone-Poulenc Agro
    Inventors: Masaaki Sugiura, Takashi Sugiyama
  • Patent number: 5972888
    Abstract: This invention describes methods of treating conditions associated with an excess of neuropeptide Y which comprises administering an obesity protein. This invention also describes methods of treating conditions associated with an excess of neuropeptide Y which comprises administering an obesity protein in combination with a neuropeptide Y antagonist. This invention demonstrates that the obesity protein acts by reducing the production of neuropeptide Y by the hypothalamus.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: October 26, 1999
    Assignee: Eli Lilly and Company
    Inventors: Juliana Maude Bue-Valleskey, Mark Louis Heiman, Thomas Wesley Stephens, Frank C. Tinsley
  • Patent number: 5972959
    Abstract: Compounds of formula (I): ##STR1## wherein: R.sup.1 is hydrogen or alkyl; R.sup.2 is alkylene; R.sup.3 is hydrogen, alkyl, alkoxy, alkylthio, halogen, nitro group, amino group, monoalkylamino, dialkylamino, aryl, or aralkyl; X is aryl, or aromatic heterocyclic; Y is oxygen, sulfur or a group of formula >N--R.sup.4, in which R.sup.4 is hydrogen, alkyl or acyl; and Z is a group of formula (Za), (Zb), (Zc) or (Zd): ##STR2## and salts thereof can be used to treat or prevent are included those arising from hyperlipidemia, hyperglycemia, obesity, impaired glucose tolerance (IGT), insulin resistant non-IGT (NGT), non-diagnostic glucose tolerance, insulin resistance, diabetic complications, fatty liver, polycystic ovary syndrome (PCOS) and gestational diabetes mellitus (GDM); in addition the compounds of the present invention have aldose reductase inhibitory activity.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: October 26, 1999
    Assignee: Sankyo Company, Limited
    Inventors: Hiroaki Yanagisawa, Takashi Fujita, Koichi Fujimoto, Takao Yoshioka, Kunio Wada, Minoru Oguchi, Toshihiko Fujiwara, Hiroyoshi Horikoshi
  • Patent number: 5973151
    Abstract: Disclosed are aromatic condensation compounds useful as building blocks for construction of various types of optically active substances and reagent, wherein the aromatic condensation compounds are represented by general formula (1) below and capable of forming enantiomeric isomers. In the formula, two Rs are the same or different functional groups and selected from among linear, branched and cyclic hydrocarbon groups of 1-16 carbon atoms, either of which R may be hydrogen. A portion of the aromatic nucleus may be reduced, or at least one of the two nitrogen atoms may be quaternary. The aromatic condensation compounds can be produced by heating and reacting N,N'-diphenyl-p-phenylenediamine with a carboxylic acid represented by the general formula --RCOOH in an amount of at least 2 molar equivalents with respect to the diamine, at 180-210.degree. C. in the presence of a Lewis acid such as zinc chloride.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: October 26, 1999
    Assignee: Japan Science and Technology Corporation
    Inventors: Yasutaka Tanaka, Akemi Sekita, Hiroshi Suzuki, Akiyoshi Torii
  • Patent number: 5968947
    Abstract: A compound of formula (I): ##STR1## wherein A represents a bidentate group of formula --CH.sub.2 --X--CH.sub.2 -- (wherein X is methylene, sulfur or oxygen), X'C.dbd.CY or X'WC--CYZ (wherein X', W, Y and Z are independently hydrogen, hydroxy, acyloxy, alkoxy, alkylsilyloxy, cyano or halogen, or X' and W or Y and Z together with the carbon to which they are attached form a carbonyl group), provided that A is not CH.sub.2 --CH.sub.2 ; Ar is an optionally substituted phenyl or 5-or 6-membered heterocyclic ring system containing from 1 to 3 heteroatoms individually selected from nitrogen, oxygen and sulfur atoms, and at least one unsaturation (double bond) between adjacent atoms in the ring, said heterocyclic ring being optionally fused to a benzene ring; aryl, heteroaryl, aralkyl, heteroarylalkyl, alkenyl, aralkenyl, alkynyl, alkoxycarbonyl, alkanesulfonyl, arenesulfonyl, alkanyloxycarbonyl, aralkyloxycarbonyl, aryloxycarbonyl, heterocyclylalkyl, carbamyl, dithiocarboxyl moieties of R, R.sup.3 and R.sup.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: October 19, 1999
    Assignee: ZENECA Limited
    Inventors: Christopher John Urch, Roger Salmon, Christopher Richard Ayles Godfrey, Matthew Brian Hotson
  • Patent number: 5968482
    Abstract: The invention relates to the use of .alpha.-hydroxyketoalkyl derivatives as light protection filters for cosmetic or pharmaceutical products, the .alpha.-hydroxyketoalkyl group being linked, if appropriate via a spacer, to a chromophoric group which has an absorption maximum in a wavelength range of between 280 and 400 nm and has a conjugated .pi.-electron system of at least 8 .pi.-electrons, and to new .alpha.-hydroxyalkyl derivatives, processes for their preparation and pharmaceutical and cosmetic formulations comprising these derivatives as light protection substances.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: October 19, 1999
    Assignee: Merck Patent Gesellschaft MIT Beschrankter Haftung
    Inventors: Roland Martin, Ingeborg Stein, Ulrich Heywang, Michael Schwarz, Thekla Kurz
  • Patent number: 5968863
    Abstract: It is possible to prepare in high yield and purity the racemic and meso forms of bridged chiral metallocenes with a stereoselective method, by synthesizing the sylil-, germyl- or stannyl-substituted ligands. These compounds can be prepared in their racemic and meso forms, and then selectively transformed in the corresponding metallocenes.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: October 19, 1999
    Assignee: Montell Technology Company B.V.
    Inventors: Ilya E. Nifant'ev, Pavel V. Ivchenko, Luigi Resconi