Patents Examined by Ba K. Trinh
  • Patent number: 4924012
    Abstract: Process for preparing derivatives of baccatine III and of 10-deacetylbaccatine III, of general formula (I), in which R is hydrogen or acetyl, by condensation of an acid of general formula (II) with a derivative of baccatine III or of 10-deacetylbaccatine III of general formula (III), R.sub.1, R.sub.2 and R.sub.3 denoting hydroxy-protecting groups, followed by the replacement of the protecting groups by hydrogen.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: May 8, 1990
    Assignee: Rhone-Poulenc Sante
    Inventors: Michel Colin, Daniel Guenard, Francoise Gueritte-Voegelein, Pierre Potier
  • Patent number: 4924013
    Abstract: A process for the reduction of free epichlorohydrin in epoxy compounds which involves the treatment of an epoxy compound with an alkali metal sulfite, preferably sodium sulfite.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: May 8, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Joe M. Hunter
  • Patent number: 4921973
    Abstract: A (+)-charged dye transition metal complex, particularly a complex of platinum and a (+)-charged dye such as rhodamine 123. These products demonstrate antitumor and radio-sensitizing activity.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: May 1, 1990
    Assignee: Johnson Matthey Inc.
    Inventors: Beverly A. Teicher, Robert C. Richmond, Lan B. Chen
  • Patent number: 4918193
    Abstract: Disclosed is a process for synthesizing 3-[N-phenylacetylaminopiperidine]-2,6-dion, which process comprises the steps of providing a quantity of L-glutamine, providing a quantity of phenylacetyl halide, mixing together the L-glutamine and phenylacetyl halide in a weakly alkaline aqueous solution to provide an aqueous reaction mixture, adjusting the reaction mixture to a pH ranging from about 2 to about 3, and recovering from the reaction mixture the product 3-[N-phenylacetylamino-piperidine]-2,6-dion, and when desired preparing the pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: April 17, 1990
    Inventor: Stanislaw R. Burzynski
  • Patent number: 4916241
    Abstract: This invention relates to 4-substituted-5-hydroxy-2(5H)-furanones, to the process for their preparation, to pharmaceutical compositions containing said 4-substituted-5-hydroxy-2(5H)-furanones and to the use of said 4-substituted-5-hydroxy-2(5H)-furanones for modifying the balance between bone production and bone resorption in a host animal, including man.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: April 10, 1990
    Assignee: American Home Products Corporation
    Inventors: Marshall A. Hayward, Joseph P. Sabatucci, Ivo L. Jirkovsky, Yvon Lefebvre
  • Patent number: 4916154
    Abstract: The present invention relates to novel 23-imino derivatives of LL-F28249.alpha., .beta., .gamma., .delta., .epsilon., .zeta., .theta., .iota., and .lambda. compounds. These LL-F28249 compounds (collectively) are isolates from the fermentation broth of Streptomyces cyaneogrisesu subspecies noncyanogenus having deposit accession number NRRL 15773. The precursor 23-oxo compounds are prepared by selectively oxidizing suitably protected 23-hydroxy compounds of LL-F28249 components using oxidizing agents. Subsequently, the 23-oxo compounds are converted to the 23-imino compounds. These novel compounds have potent anthelmintic, insecticidal, ectoparasiticidal, nematicidal and acaricidal activity. Compositions containing these 23-oxo and 23-imino derivatives of LL-F28249 also are described herein.
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: April 10, 1990
    Assignee: American Cyanamid Company
    Inventors: Goro Asato, Donald J. France
  • Patent number: 4916238
    Abstract: This invention relates to a novel process for making an allenic prostanoic acid derivative in the form of a single stereoisomer, or a mixture of stereosiomers, represented by the formula (I): ##STR1## wherein R is lower alkyl, R.sup.1 is a protecting group which can be selectively removed in the presence of R.sup.2, R.sup.2 is an acid-labile, base-stable protecting group, X is --(CH.sub.2).sub.2 --, trans --CH.dbd.CH-- or --C.tbd.C--, Y is --C(R.sup.3)(OR.sup.2)CH.sub.2 --, in which --OR.sup.2 is in the .alpha. or .beta. configuration and R.sup.3 is hydrogen or methyl, Z is alkyl, or phenyl, benzyl or phenoxy each optionally substituted on the phenyl ring, and the wavy lines represent the .alpha. or .beta. configuration with the proviso that when one wavy line is .alpha. the other is .beta..
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: April 10, 1990
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Gary F. Cooper, Colin C. Beard, David Y. Jackson, Douglas L. Wren
  • Patent number: 4916153
    Abstract: Compounds of formula (I): ##STR1## and salts thereof; wherein R.sup.1 is --H, --OH or substituted --OH and R.sup.2 is --H, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached represent C.dbd.O, C.dbd.CH.sub.2 or C.dbd.NOR.sup.6 in the E configuration (where R.sup.6 is --H, alkyl or alkenyl);R.sup.3 is --OH or substituted --OH and R.sup.4 is --H, or R.sup.3 and R.sup.4 together with the carbon atom to which they are attached represent C.dbd.O;--A--B-- is --C(CH.sub.3).dbd.CH-- or --C(.dbd.CH.sub.2)CHX-- (where X is Cl or Br) andY is --C(R.sup.8).dbd.CHR.sup.7 -- or --C(.dbd.CH.sub.2)CHXR.sup.7 (where X is Cl or Br, R.sup.7 is methyl, ethyl or isopropyl and R.sup.8 is C.sub.2-8 alkyl or C.sub.7-15 phenalkyl); with the proviso that when --A--B-- is (.dbd.CH.sub.2)CHX--, then Y is--C(C.dbd.CH.sub.2)CHXR.sup.7.These compounds may be used for controlling insect, acarine, nematode or other pests.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: April 10, 1990
    Assignee: American Cyanamid Company
    Inventors: Brian M. Bain, Paul F. Lambeth, Alison C. Rosemeyer, John B. Ward, Neil Porter, Hazel M. Noble, Richard A. Fletton, David Noble, Derek R. Sutherland, Michael V. J. Ramsay, Edward P. Tiley
  • Patent number: 4914127
    Abstract: 3-Demethylmevalonic acid derivatives of the formula I (.delta.-lactone) and Ia (corresponding dihydroxycarboxylic acid derivative) ##STR1## in which A-B, Z, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the indicated meanings, a process for the preparation of these compounds, their use as medicaments and pharmaceutical products are described. In addition, new intermediates for the preparation of the compounds of the formula I and Ia are described.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: April 3, 1990
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Beck, Bela Kerekjarto, Hans-Hermann Lau, Gunther Wess
  • Patent number: 4910219
    Abstract: Compounds are described of the formula ##STR1## and salts thereof, wherein R.sup.1 is methyl, ethyl or isopropyl;R.sup.2 is --H, --OH or substituted --OH and R.sup.3 is --H, or R.sup.2 and R.sup.3 together with the carbon atom to which they are attached represent C.dbd.CH.sub.2, C.dbd.O or C.dbd.NOR.sup.6 (where R.sup.6 is --H, alkyl or alkenyl and the C.dbd.NOR.sup.6 is in the E configuration);OR.sup.4 is as defined above for OR.sup.5and one of the symbols X represents an epoxide oxygen atom and the other represents an epoxide oxygen atom or a carbon-carbon bond.These compounds may be used for controlling insect, acarine, nematode or other pests.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: March 20, 1990
    Assignee: American Cyanamid Company
    Inventors: Derer R. Sutherland, John B. Ward, Neil Porter, Hazel M. Noble, Richard A. Fletton, David Noble
  • Patent number: 4910323
    Abstract: 2'-substituted-spiro[benzofuran-2(3H),1'-cyclohexanes] and methods of preparing same are described. On the aromatic portion of the benzofuran ring, there may be a substituent or substituents including halogen, amino, lower-alkyl-substituted amino, lower alkyl, lower alkoxy, hydroxy and nitro. The substituents at the 2-position of the cyclohexane ring are --(CH.sub.2).sub.n NR.sup.1 R.sup.2 where n is 0, 1 or 2 and R.sup.1 and R.sup.2 are each independently hydrogen and alkyl of 1-3 carbons. These compounds are useful as antidepressants and analgesics.Various other compounds which are useful as intermediates for preparing the aforementioned compounds and methods for preparing same are also described.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: March 20, 1990
    Assignee: Hoechst Roussel Pharmaceuticals, Inc.
    Inventors: Edward J. Glamkowski, Michael C. Jones
  • Patent number: 4908373
    Abstract: The present invention relates to 1-[2-(4-hydroxybenzoyl)ethanoyl]-2-piperidone which is a novel compound of N-acyl lactam compounds and exhibit excellent effects in promoting fermentation in alcohol fermentation.This novel compound can be prepared by converting 2-(4-benzyloxybenzoyl)acetic acid into the acid chloride, then coupling the acid chloride with 2-piperidone or an alkylate of 2-piperidone and then subjecting to debenzylation.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: March 13, 1990
    Assignee: Taki Chemical Co., Ltd.
    Inventors: Minoru Okumura, Yoshio Maekawa, Hironori Mizuno, Osamu Yagiyu
  • Patent number: 4908459
    Abstract: A novel glycidyl sulfonamide compound having a (poly)siloxane main chain of its molecule is used alone or in admixture with an epoxy resin to give a cured material being excellent in flexibility, elongation and impact strength without deteriorating thermal resistance, chemical resistance and water absorption thereof. An epoxy resin composition or a resin composition for an epoxy paint containing a glycidyl sulfonamide compound, the epoxy resin and a curing agent for epoxy resin provides a cured material or a coating film having the above-mentioned excellent properties. A process for preparing a glycidyl sulfonamide compound characterized in that subjecting an amine modified silicone having a (poly)siloxane main chain of its molecule to condensation reaction with a sulfonyl chloride to give a sulfonamide compound, which is subjected to an addition reaction with an epihalohydrin to give the glycidyl sulfonamide compound.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: March 13, 1990
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshikuni Deguchi, Hiroshi Iwarkiri, Kazunari Iwamoto, Kazuya Yonezawa
  • Patent number: 4904805
    Abstract: A process for the manufacture of ketopantolactone of the formula ##STR1## from pantolactone, which comprises dehydrogenating pantolactone in the presence of a vanadium oxide-containing or molybdenum oxide-containing catalyst with oxygen or an oxygen-containing gas in the gas phase.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: February 27, 1990
    Assignee: Hoffmann-La Roche Inc.
    Inventor: Paul Nosberger
  • Patent number: 4900753
    Abstract: Compounds are described of formula (I) ##STR1## and salts thereof, wherein R.sup.1 represents a methyl, ethyl or isopropyl group;R.sup.2 represents a hydrogen atom, a C.sub.1-8 alkyl group or a C.sub.3-8 alkenyl group and the group .dbd.NOR.sup.2 is in the E-configuration;OR.sup.3 is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms.These compounds may be used for controlling insect, acarine, nematode or other pests.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: February 13, 1990
    Assignee: American Cyanamid Company
    Inventors: Derek R. Sutherland, Michael V. J. Ramsay, Edward P. Tiley, Oswy Z. Pereira, John B. Ward, Neil Porter, Hazel M. Noble, Richard A. Fletton, David Noble
  • Patent number: 4897498
    Abstract: Process is disclosed for the selective mono epoxidation of olefins having no allylic hydrogens. Such olefins are contacted with an oxygen-containing gas in the presence of a silver catalyst under defined reaction conditions, thereby selectively producing monoepoxides in good yield.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: January 30, 1990
    Assignee: Eastman Kodak Company
    Inventors: John R. Monnier, Peter J. Muehlbauer
  • Patent number: 4895961
    Abstract: Completely esterified rhodamine dyes of the formula ##STR1## where R, R.sup.2 and R.sup.4 are independently of one another methyl or ethyl, R.sup.1 and R.sup.3 are independently of one another hydrogen, methyl or ethyl, R.sup.5 and R.sup.6 are independently of one another hydrogen or methyl and A.sup..crclbar. is an anion, are prepared from compounds of the formula II ##STR2## or from the corresponding water addition products by esterification with dialkyl sulfates in solvents by using .gamma.-butyrolactone, alkylene carbonates, dialkyl carbonates, methoxypropyl acetate or dialkyl phthalates as solvent and working in the presence of an excess of a base, based on dialkyl sulfate.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: January 23, 1990
    Assignee: BASF Aktiengesellschaft
    Inventor: Karl Schmeidl
  • Patent number: 4894465
    Abstract: This invention discloses intermediates and processes for the preparation of 6-desmethyl-6-.alpha. hydroxymethyl derivatives of lovastatin and analogs thereof at the 8-acyl side chain.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: January 16, 1990
    Assignee: Merck & Co., Inc.
    Inventors: Ta J. Lee, William F. Hoffman
  • Patent number: 4894466
    Abstract: This invention discloses intermediates and a process for the preparation of 6-desmethyl-6-.beta.-hydroxymethyl derivatives of lovastatin and analogs thereof at the 8-acyl side chain.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: January 16, 1990
    Assignee: Merck & Co., Inc.
    Inventors: Ta Jyh Lee, William F. Hoffman
  • Patent number: 4892955
    Abstract: A method for producing a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester in the presence of a catalyst, wherein said catalyst is a ruthenium catalyst comprising (1) ruthenium, (2) an organic phosphine and (3) a conjugate base of an acid having a pKa of less than 2.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: January 9, 1990
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Keisuke Wada, Yoshinori Hara, Koushi Sasaki