Halogen Patents (Class 562/456)
  • Patent number: 4994606
    Abstract: 4,5-Difluoroanthranilic acid may be prepared by decarboxylating 4,5-difluorophthalic anhydride or 4,5-difluorophthalic acid by heating in dimethyl acetamide, N-methyl-2-pyrrolidone or quinoline, optionally by reaction with copper, copper oxide, copper salts, or halides and salts of Zn, Cd, Ag and Ni as a catalyst, whereby 3,4-difluorobenzoic acid is formed; nitrating said 3,4-difluorobenzoic acid in a mixture of nitric and sulfuric acids to form 2-nitro-4,5-difluorobenzoic acid, and reducing said 2-nitro-4,5-difluorobenzoic acid to form 4,5-difluoroanthranilic acid.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: February 19, 1991
    Assignee: Occidental Chemical Corporation
    Inventors: Lawrence B. Fertel, Henry C. Lin
  • Patent number: 4990661
    Abstract: A process for the preparation of a compound of the formula ##STR1## in which X.sup.1 and X.sup.2 each independently is chlorine or fluorine, andY is chlorine, bromine, fluorine or iodine, comprising subjecting a compound of the formula ##STR2## to a Sandmeyer or Balz-Schiemann reaction thereby to produce a carboxylic acid of the formula ##STR3## and converting the carboxylic acid (Ia) into an acyl chloride of the formula ##STR4## The compound (II) is new. The products are known intermediates for anti-bacterials.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: February 5, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Uwe Petersen, Michael Schriewer, Ernst Kysela, Klaus Grohe
  • Patent number: 4990663
    Abstract: This invention relates to a process for the hydrogenation of halogenated aromatic nitro compounds to the corresponding halogenated amines using a platinum catalyst in the presence of certain aminoalkyl ethers or alkanolamines. It relates in addition to halogenated aromatic amines containing an amount of such aminoalkyl ether or alkanolamine effective to stabilize said halogenated aromatic amine. The storage stabilizers and dehalogenation inhibitors contain a total of 2 to 6 carbon atoms and can be represented by the formula:R.sup.1 --(R.sup.2)--N--(CH.sub.2).sub.n --O--R.sup.3wherein R.sup.1 and R.sup.2 may be the same or different --H or --CH.sub.2 CH.sub.2 OH, n is an integer from 2 to 3, and R.sup.3 is either --H or --CH.sub.3.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: February 5, 1991
    Assignee: E. I. Du POnt de Nemours and Company
    Inventors: Yu-Wei Chang, Robert L. Seagraves
  • Patent number: 4978773
    Abstract: A new process for the preparation of 2,6-dichlorodiphenylamine derivatives is described, which process provides the desired active compound in a high yield and with a very high degree of purity by a technically simple and realizable procedure.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: December 18, 1990
    Assignee: Heumann Pharma GmbH & Co.
    Inventors: Ingomar Grafe, Helmut Schickaneder, Kurt H. Ahrens
  • Patent number: 4962230
    Abstract: A process for producing an optically active carboxylic acid represented by formula (I): ##STR1## wherein R.sup.1, and R.sup.2, and R.sup.3 each represents a hydrogen atom, an alkyl group, an alkenyl group, or a phenyl or naphthyl group which may have a substituent, provided that all of R.sup.1, R.sup.2, and R.sup.3 are not simultaneously a hydrogen atom; when R.sup.1 and R.sup.2 are simultaneously a hydrogen atom, then R.sup.3 is not a methyl group; and that when R.sup.3 is a hydrogen atom, then R.sup.1 and R.sup.2 are each a group other then a hydrogen atom,is disclosed, comprising asymmetrically hydrogenating an .alpha.,.beta.-unsaturated carboxylic acid represented by formula (II): ##STR2## wherein R.sup.1, R.sup.2, and R.sup.3 are the same as defined above, in the presence of a ruthenium-optically active phosphine complex as a catalyst.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: October 9, 1990
    Assignee: Takasago International Corporation
    Inventors: Hidemasa Takaya, Tetsuo Ohta, Ryoji Noyori, Noboru Sayo, Hidenori Kumobayashi, Susumu Akutagawa
  • Patent number: 4954639
    Abstract: Disclosed is a method of making ionized fluoroanthranilic acid from a fluorophthalic compound in a single pot process without isolating any intermediate product. A composition is prepared which comprises an aqueous solution of water, a fluorophthalic compound selected from the group consisting of ##STR1## and mixtures thereof, where "n" is 1 to 4, at a concentration of about 5 to about 30 percent by weight based on the water weight, and about 1 to about 1.5 equivalents of hydroxylamine or a mineral acid salt thereof. The pH of the composition is maintained at at least about 11 and the temperature of the composition is maintained at at least about 90.degree. C. The unionized form of the acid is made by cooling below 50.degree. C. and lowering the pH to between about 4 and about 5. Also disclosed are the intermediate compounds, fluoro-N-hydroxyphthalimides, and a method of making them.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: September 4, 1990
    Assignee: Occidental Chemical Corporation
    Inventors: Lawrence B. Fertel, Neil J. O'Reilly
  • Patent number: 4942231
    Abstract: The invention relates to a method of preparing a chlorinated, brominated, radiobrominated, iodinated and/or radioiodinated aromatic or heteroaromatic compound, in which the (hetero)aromatic nucleus optionally comprises one or more additional substituents, by reacting the corresponding halogenated or diazonium-substituted compound in the presence of a water-soluble acid and of copper ions as a catalyst with a likewise water-soluble chloride, bromide radiobromide, iodide or radio-iodide, in which the reaction is carried out in the presence of one or more reduction agents, which are stable in acid medium, in a quantity exceeding the quantity of catalyst. The invention also relates to a composition suitable for diagnostic examination and to a kit for the preparation thereof. The invention further relates to a method and an equipment for the preparation of said composition.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: July 17, 1990
    Assignee: Mallinckrodt, Inc.
    Inventor: John Mertens
  • Patent number: 4933367
    Abstract: This invention relates to carboxylic acid derivatives and their use thereof. The compounds are useful in treatment of various diseases such as diabetes, prediabetic conditions, adipositas ailments or atherosclerosis.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: June 12, 1990
    Assignee: Boehringer Mannheim GmbH
    Inventors: Hans P. Wolff, Ernst-Christian Witte, Hans-Frieder Kuhnle
  • Patent number: 4925958
    Abstract: The invention relates to a process for the preparation of compounds of the formula I ##STR1## in which R.sup.1 denotes (substituted) aryl or (substituted) cyclohexyl and R.sup.2 =alkyl, in which a compound of the formula R.sup.1 --NH.sub.2 is reacted with at least twice the molar amount of glyoxylic acid in the presence of water and the resulting acid is then esterified.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: May 15, 1990
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Roland Schmierer, Rudolf Kunstmann
  • Patent number: 4885386
    Abstract: An improved process for the preparation of 3-chloro-2,4,5-trifluorobenzoic acid is described which involves reaction of a diester of 3,4,5,6-tetrafluoro-1,2-benzenedicarboxylic acid with a substituted amine to afford 3-amino-2,4,5-trifluorobenzoic acid followed by subsequent conversion of the amio intermediate into 3-chloro-2,4,5-trifluorobenzoic acid.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: December 5, 1989
    Assignee: Warner-Lambert Company
    Inventors: James N. Wemple, Gregory L. Karrick, Floyd G. Spence
  • Patent number: 4861799
    Abstract: A benzoylurea compound having the formula: ##STR1## wherein each of X.sub.1 and X.sub.2 is a hydrogen atom, a halogen atom or a methyl group, provided that X.sub.1 and X.sub.2 are not simultaneously hydrogen atoms, Y is independently a hydrogen atom, a halogen atom, an alkyl group which may be substituted by halogen, a --CO.sub.2 R.sub.1 group wherein R.sub.1 is a hydrogen atom, a cation or an alkyl group, or a --OR.sub.1 group wherein R.sub.1 is as defined above, A.sub.1 is .dbd.N--or ##STR2## wherein Y is as defined above, W is an oxygen atom, a sulfur atom or ##STR3## wherein R.sub.1 is as defined above, k is an integer of from 1 to 3, l is 0 or 1, and Ar is ##STR4## wherein Z is independently a hydrogen atom, a halogen atom, an alkyl group which may be substituted by halogen, an alkoxy group which may be substituted by halogen, a nitro group, a cyano group or a --S(O).sub.n R.sub.2 group wherein R.sub.2 is an alkyl group which may be substituted by halogen and n is 0, 1 or 2, A.sub.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: August 29, 1989
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Takahiro Haga, Tadaaki Toki, Toru Koyanagi, Yasuhiro Fujii, Kiyomitsu Yoshida, Osamu Imai
  • Patent number: 4851160
    Abstract: A process for the preparation of a compound of the formula ##STR1## in which X.sup.1 and X.sup.2 each independently is chlorine or fluorine, andY is chlorine, bromine, fluorine or iodine, comprising subjecting a compound of the formula ##STR2## to a Sandmeyer or Balz-Schiemann reaction thereby to produce a carboxylic acid of the formula ##STR3## and converting the carboxylic acid (Ia) into an acyl chloride of the formula ##STR4## The compound (II) is new. The products are known intermediates for anti-bacterials.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: July 25, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Uwe Petersen, Michael Schriewer, Ernst Kysela, Klaus Grohe
  • Patent number: 4833270
    Abstract: This disclosure describes a novel process for preparing 2-chloro-4,5-difluorobenzoic acid which is useful in the preparation of 7-(substituted)piperazinyl-1-substituted-6-fluoro-1,4-dihydro-4-oxo-3-quin oli necarboxylic acid antibacterial agents.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: May 23, 1989
    Assignee: American Cyanamid Company
    Inventors: Panayota Bitha, Yang-I Lin
  • Patent number: 4804760
    Abstract: A process for the preparation of a compound of the formula ##STR1## in which Y is a nitrile group, an ester group COOR.sup.1 or an acid amide CONR.sup.2 R.sup.3,R.sup.1, R.sup.2 and R.sup.3 each independently is hydrogen or C.sub.1 -C.sub.4 -alkyl, and R.sup.3 may also be phenyl, andX.sup.2, X.sup.3, X.sup.4 and X.sup.5 each independently is hydrogen, halogen, nitro, cyano, alkyl having 1-3 carbon atoms, alkoxy having 1-3 carbon atoms, alkylmercapto having 1-3 carbon atoms, alkyl-sulphonyl having 1-3 carbon atoms, or a phenylsulphonyl group which is optionally substituted in the aryl radical,comprising reacting an aminoacrylate of the formulain whichX.sup.1 is halogen, a nitro group, an alkoxy, alkoxy, alkylmercapto or alkylsulphonyl group having 1-3 carbon atoms in each case, or an arylsulphonyl group,W is hydrogen or a --CH.sub.2 CH.sub.2 Z radical,Z is a nitrile group, an ester group COOR.sup.4 or an acid amide group CONR.sup.5 R.sup.6, andR.sup.4, R.sup.5 and R.sup.6 each independently is hydrogen or C.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: February 14, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Schriewer, Klaus Grohe
  • Patent number: 4782179
    Abstract: 3-amino-2,4,5-trifluorobenzoic acid which is a novel compound and is manufactured by heating 4-amino-3,5,6-trifluorophthalonitrile in the presence of an acid.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: November 1, 1988
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Koichi Hirota, Osamu Kaieda, Tsuguo Takaya
  • Patent number: 4772632
    Abstract: New antineoplastic, system - L specific amino acid nitrogen mustards with reduced myelosuppressive effect are disclosed. A method for identifying and isolating the cellular component comprising the L - amino acid transport system is also described.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: September 20, 1988
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventor: David T. Vistica
  • Patent number: 4760067
    Abstract: Organic sulfoxides having a latent allyl group bound to the sulfur are enzyme inhibitors of the suicide or K.sub.cat type.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: July 26, 1988
    Assignee: Merck & Co., Inc.
    Inventor: Raymond A. Firestone
  • Patent number: 4735795
    Abstract: New X-ray contrast agents are provided which are alkylammonium complexes of diatrizoic acid having the structure ##STR1## X-ray contrast medium containing the above X-ray contrast agent and a carrier therefor such as a liposome carrier, and a method for the X-ray visualization of body cavities and organs are also provided.
    Type: Grant
    Filed: September 7, 1984
    Date of Patent: April 5, 1988
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Malcolm L. Robinson, Frank Ridgway, Peter Timmins
  • Patent number: 4721797
    Abstract: N-acyl-N-alkyl-2,6-dialkyl-3-chloroanilines of the formula ##STR1## wherein R.sub.1 is methyl or ethyl, R.sub.2 is alkoxymethyl, chloromethyl or 2-tetrahydrofuryl, R.sub.3 is alkoxymethyl, carboxy or alkoxycarbonyl and R.sub.4 is hydrogen or methyl and, if R.sub.3 is carboxy or alkoxycarbonyl, R.sub.4 is also 2-alkoxyethyl and 2-alkoxypropyl, and R.sub.3 and R.sub.4, together with the carbon atom to which both radicals are attached, may also form a 2-oxotetrahydro-3-furyl radical or a 2-oxo-5-methyltetrahydro-3-furyl radical, are prepared by reacting a 2,6-dialkylaniline of the formula ##STR2## with a halide of the formula ##STR3## wherein X is chlorine or bromine, to give an N-alkyl-2,6-dialkylaniline of the formula ##STR4## then converting said compound by further reaction with an acylating agent of the formulaX.sub.1 --CO--R.sub.2wherein X.sub.1 is chlorine, bromine or -O-CO-R.sub.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: January 26, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Wolfgang Eckhardt, Hans Suess
  • Patent number: 4698066
    Abstract: A hair treating composition containing certain substituted aminodiphenylamines as a first oxidation dye precursor, optionally at least one second oxidation dye precursor, optionally at least one substantive hair dye, and a cosmetic carrier; as well as a method for its use.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: October 6, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: David Rose, Norbert Maak, Edgar Lieske
  • Patent number: 4645857
    Abstract: Disclosed herein is a process for obtaining indoline-2-carboxylic acid (or derivaties thereof) comprising the following step: (a) reducing .alpha.-oxo-2-nitrobenzenepropanoic acid to .alpha.-hydroxy-2-nitrobenzenepropanoic acid, (b) replacing the hydroxyl group of the latter with a chlorine atom utilizing a selected Vilsmeier chlorinating reagent at temperatures of at least 20.degree. C., (c) reducing the nitro group of the resulting .alpha.-chloro-2-nitrobenzenepropanoic acid to obtain .alpha.-chloro-2-aminobenzenepropanoic acid, and (d) cyclizing the latter in aqueous base to form the desired indoline-2-carboxylic acid. Alternately, steps (c) and (d) may be combined in a one pot step by using, for example, a Raney nickel-hydrazine reducing medium.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: February 24, 1987
    Assignee: American Home Products Corporation
    Inventors: Michael W. Winkley, Ronald J. McCaully
  • Patent number: 4644081
    Abstract: Disclosed herein is a process for producing an asymmetric indoline-2-carboxylic acid of the structural Formula: ##STR1## wherein X is hydrogen, bromine, chlorine, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, which comprises:(a) assymetrically reducing an o-nitrophenylpyruvic acid III by contacting the acid III with a reducing complex formed from (R)-proline or (S)-proline, respectively, and sodium borohydride in an inert solvent to form, respectively, an (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid IV;(b) reacting, respectively, said (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid III with a Vilsmeier chlorinating reagent in which the chlorinating agent thereof is selected from a group consisting of thionyl chloride, oxalyl chloride, phosphorus oxychloride, phosphorus pentachloride and sulfuryl chloride and the amide thereof is selected from a group consisting of dimethylformamide, diethylformamide, dimethylacetamide and diethylacetamide, said reaction being run at temperatures of at least 20.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: February 17, 1987
    Assignee: American Home Products Corporation
    Inventors: George C. Buzby, Jr., Michael W. Winkley, Ronald J. McCaully
  • Patent number: 4634777
    Abstract: Compounds of the general formula: ##STR1## wherein A and B are both hydrogen, or one of A and B is a group (G) of the formula: ##STR2## and the other is a group R.sup.5 wherein R.sup.1 is an aryl group or a heterocyclic group, both of them being optionally substituted, and R.sup.4 and R.sup.5 are both hydrogen or together form a single chemical bond,R.sup.2 and R.sup.2 ' are independently hydrogen, halogen, nitro, lower alkyl or lower alkoxy, andR.sup.3 and R.sup.3 ' are independently carboxy or its functional derivative, with the proviso that (a) when A and B are both hydrogen, then R.sup.2 and R.sup.2 ' cannot be both hydrogen,and, where applicable, pharmaceuticably acceptable salts thereof are hyaluronidase inhibitors, and useful as anti-allergic agent and anti-ulcerous agent. Among the compound (I'), those wherein when one of A and B is the group (G) and the other is the group R.sup.5 wherein R.sup.4 and R.sup.5 together form a single chemical bond, R.sup.1 is unsubstituted aryl and R.sup.2 and R.sup.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: January 6, 1987
    Assignee: Sawai Pharmaceutical Co., Ltd.
    Inventors: Toshio Satoh, Hitoshi Matsumoto, Hisao Kakegawa, Yoshiko Kato, Juichi Riku, Junji Yoshinaga, Yoshifumi Kanamoto
  • Patent number: 4619685
    Abstract: A plant growth regulator comprising, as the active substance, one or more of N-substituted alanine derivatives of the general formula: ##STR1## wherein X represents halogen atom or trifluoromethyl, R represents hydrogen, straight chain or branched chain alkyl having 1-4 carbon atoms, alkenyl having 2-4 carbon atoms, an alkali metal atom or amine-forming residue, and n is zero or an integer of 1 or 2, with the proviso that when n is 2, X may be same or different, together with an inert carrier or diluent, in particular, an agent effective for controlling suckers of tobacco, and a process for regulating plant growth by using said plant growth regulator.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: October 28, 1986
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Yasuo Kamuro, Koichi Hirai, Fumio Suzuki, Susumu Yamamoto, Noboru Shindo
  • Patent number: 4614806
    Abstract: Disclosed herein is a process for producing an asymmetric indoline-2-carboxylic acid of the structural Formula: ##STR1## wherein X is hydrogen, bromine, chlorine, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, which comprises:(a) assymetrically reducing an o-nitrophenylpyruvic acid III by contacting the acid III with a reducing complex formed from (R)-proline or (S)-proline, respectively, and sodium borohydride in an inert solvent to form, respectively, an (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid IV;(b) reacting, respectively, said (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid III with a Vilsmeier chlorinating reagent in which the chlorinating agent thereof is selected from a group consisting of thionyl chloride, oxalyl chloride, phosphorus oxychloride, phosphorus pentachloride and sulfuryl chloride and the amide thereof is selected from a group consisting of dimethylformamide, diethylformamide, dimethylacetamide and diethylacetamide, said reaction being run at temperatures of at least 20.
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: September 30, 1986
    Assignee: American Home Products Corporation
    Inventors: George C. Buzby, Jr., Michael W. Winkley, Ronald J. McCaully
  • Patent number: 4604243
    Abstract: An olefin, especially an activated olefin, is arylated by reaction with an arylamine, such as an aniline, in an inert polar organic solvent and in the presence of an alkyl nitrite, a hydrogen halide, and a catalytic amount of a copper catalyst having the copper in an oxidation state below +2.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: August 5, 1986
    Assignee: Ethyl Corporation
    Inventor: Robert I. Davidson
  • Patent number: 4602023
    Abstract: The present invention provides various novel diphenic acid monoamide compounds, novel pharmaceutical compositions and methods of use thereof, as well as novel methods of synthesis therefor. The novel diphenic acid monoamides of the present invention are leukotriene antagonists, 5-lipoxygenase inhibitors, and mediator release inhibitors providing activity useful for treating asthma, allergies, cardiovascular diseases, migraines, and immunoinflammatory conditions.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: July 22, 1986
    Assignee: Warner-Lambert Company
    Inventors: John S. Kiely, Suchin Huang
  • Patent number: 4598093
    Abstract: 4-Amino-1,2,3,4-tetrahydro-2-naphthoic acid derivative of the formula: ##STR1## wherein X is halogen atom, n is 1 or 2, R.sup.1 is hydroxy group, lower alkoxy group or amino group, and R.sup.2 is hydrogen atom, lower alkanoyl group or carbamoyl group, or their salts, which are useful as hypotensive diuretic.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: July 1, 1986
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Tetsuya Tahara, Masafumi Arita, Tsuyoshi Kuroda
  • Patent number: 4585879
    Abstract: Disclosed herein is a process for obtaining indoline-2-carboxylic acid (or derivatives thereof) comprising the following steps: (a) reducing .alpha.-oxo-2-nitrobenzenepropanoic acid to .alpha.-hydroxy-2-nitrobenzenepropanoic acid, (b) replacing the hydroxyl group of the latter with a chlorine atom utilizing a selected Vilsmeier chlorinating reagent at temperatures of at least 20.degree. C., (c) reducing the nitro group of the resulting .alpha.-chloro-2-nitrobenzenepropanoic acid to obtain .alpha.-chloro-2-aminobenzenepropanoic acid, and (d) cyclizing the latter in aqueous base to form the desired indoline-2-carboxylic acid. Alternately, steps (c) and (d) may be combined in a one pot step by using, for example, a Raney nickel-hydrazine reducing medium.
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: April 29, 1986
    Assignee: American Home Products Corporation
    Inventors: Michael W. Winkley, Ronald J. McCaully
  • Patent number: 4579869
    Abstract: The invention relates to novel substituted [(2,3-dihydro-1-oxo-1H-inden-5-yl)amino]alkanoic acids, their derivatives and their salts. The compounds are useful for the treatment and prevention of injury to the brain and of edema due to head trauma, stroke (particularly ischemic), arrested breathing, cardiac arrest, Reye's syndrome, cerebral thrombosis, cerebral embolism, cerebral hemorrhage, cerebral tumors, encephalomyelitis, spinal cord injury, hydrocephalus, post-operative brain injury trauma, edema due to cerebral infections and various brain concussions.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: April 1, 1986
    Assignee: Merck & Co., Inc.
    Inventors: Edward J. Cragoe, Jr., Otto W. Woltersdorf, Jr.
  • Patent number: 4536346
    Abstract: This disclosure describes novel substituted aralkanamidobenzoic acids and analogs thereof. These compounds are useful pharmaceutical agents for ameliorating atherosclerosis by inhibiting the formation and development of atherosclerotic lesions in the arterial wall of mammals.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: August 20, 1985
    Assignee: American Cyanamid Company
    Inventors: Robert G. Shepherd, Janis Upeslacis
  • Patent number: 4528392
    Abstract: There are disclosed compounds of the formula ##STR1## wherein X is OR.sup.2, SR.sup.2, N(R.sup.2).sub.2 or halo;W is --CH.sub.2 --, ##STR2## Y is --CH.sub.2 O--, --OCH.sub.2 --, --CH.sub.2 S--, --SCH.sub.2 --, ##STR3## m is 0-6; n is 0-6;p is 1-3;A is O or S;B is OR.sup.2, SR.sup.2 or N(R.sup.2).sub.2 ;R.sup.1 is hydrogen, loweralkyl, loweralkoxy or halo;R.sup.2 is hydrogen or loweralkyl;and the pharmaceutically acceptable salts thereof, and their use in the treatment of leukotriene-mediated naso-bronchial obstructive airpassageway conditions, such as allergic rhinitis, allergic bronchial asthma and the like.
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: July 9, 1985
    Assignee: American Home Products Corporation
    Inventors: John H. Musser, Kenneth L. Kees
  • Patent number: 4521616
    Abstract: A process for the preparation of fluoroanthranilic acid compounds comprises(A) reacting ammonium fluorophthalamate or a fluorophthalamic acid of the formula ##STR1## where n is 1 or 2, with an alkali or alkaline earth metal hypochlorite to form the corresponding fluoroanthranilic acid of the formula ##STR2## where n is as previously defined.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: June 4, 1985
    Assignee: Occidental Chemical Corporation
    Inventors: Michael J. Fifolt, Arthur M. Foster
  • Patent number: 4517130
    Abstract: An improved process for preparing substituted amino acids and lower alkyl esters thereof, and intermediates therefor, comprising reacting a substituted aniline, HCN and an aldehyde to form a nitrile, converting the nitrile to an imidate salt with a strong acid and an alcohol, hydrolyzing in situ the imidate salt to the ester with addition of water, and optionally converting the ester to the salt or free acid. The acids are useful intermediates in the synthesis of pesticides.
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: May 14, 1985
    Assignee: Zoecon Corporation
    Inventor: Ted A. Baer
  • Patent number: 4447428
    Abstract: Prostanoid compounds are described having the formula: ##STR1## where A is a cyclopentane ring, which is substituted by oxo and/or hydroxy or etherified hydroxy and may be saturated or unsaturated; X is --CH.dbd.CH--or --(CH.sub.2).sub.2 --; R is alkyl having a terminal --COOH or ester group; and Y is amino or substituted amino, particularly heterocyclic amino.The compounds have bronchodilator activity and/or inhibit blood platelet aggregation.The preparation and pharmaceutical formulation of the compounds is also described.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: May 8, 1984
    Assignee: Glaxo Group Limited
    Inventors: Eric W. Collington, Harry Finch, Roger F. Newton
  • Patent number: 4442117
    Abstract: There are described novel homoserine derivatives of the formula (I) ##STR1## which possess valuable microbicidal properties. In the formula: Ar is substituted phenyl or naphthyl; R.sub.1 is C.sub.2 -C.sub.6 alkyl optionally interrupted by oxygen or sulfur, 2-furyl, 2-tetrahydrofuryl, 1H-1,2,4-triazolylmethyl, 1-imidazolylmethyl, 1-pyrazolylmethyl, C.sub.2 -C.sub.4 alkenyl or cyclopropyl, each of which is optionally substituted by halogen; R.sub.2 is hydrogen or methyl; R.sub.3 is hydrogen or C.sub.1 -C.sub.4 alkyl; and B is halogen or an ester, thioester, sulfonic acid ester or sulfonic acid amide group. Additionally, where B is halogen, R.sub.1 may be halomethyl. The novel derivatives can be used for combating microorganisms harmful to plants, particularly for combating phytopathogenic fungi, and they have for practical requirements a very favorable curative and protective action for protecting cultivating plants, without the plants being impaired as a result of undesirable secondary effects.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: April 10, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Walter Kunz, Wolfgang Eckhardt, Adolf Hubele, Peter Riebli
  • Patent number: 4435589
    Abstract: Process for the preparation of dimethyl succinylosuccinate, or the disodium salt thereof, by condensation of dimethyl succinate in a 35-45 percent by weight solution of sodium methylate in methanol, and a process for the preparation of dianilinodihydroterephthalic acids, the dimethyl esters and salts thereof, and of dianilinoterephthalic acids, and the dimethyl esters and salts thereof, starting from the disodium salt of dimethyl succinylosuccinate prepared according to the new process, without intermediate isolation.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: March 6, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Meinhard Rolf, Detlef-Ingo Schutze, Rutger Neeff, Hans-Volker Runzheimer
  • Patent number: 4435425
    Abstract: Fluorinated diaminobutane compounds in vivo are inhibitors of gamma-aminobutyric acid transaminase and have the following formula: ##STR1## wherein: R.sub.1 represents hydrogen, C.sub.1 -C.sub.6 alkyl, or phenyl-(C.sub.1 -C.sub.4 alkyl);R.sub.2 represents hydrogen, C.sub.1 -C.sub.6 alkyl, phenyl-(C.sub.1 -C.sub.4 alkyl), or R.sub.4, where R.sub.4 is as defined below;R.sub.3 represents hydrogen, or, except when R.sub.2 represents R.sub.4, R.sub.4, where R.sub.4 is as defined below;each R.sub.4, independently, represents C.sub.2 -C.sub.5 alkylcarbonyl, phenylcarbonyl, phenyl-(C.sub.1 -C.sub.4 alkyl) carbonyl, or an aminocarboxylic acid residue derived by removal of an hydroxy group from the carboxy moiety of an L-aminocarboxylic acid; andp represents 1 or 2,and pharmaceutically acceptable acid addition salts thereof.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: March 6, 1984
    Assignee: Merrell Toraude et Compagnie
    Inventors: Albert Sjoerdsma, Philippe Bey, Michel Jung, Fritz Gerhart, Daniel Schirlin
  • Patent number: 4431442
    Abstract: 2-Methylenesuccinamic acid compounds are useful plant growth regulants, e.g., are useful in regulating the growth of soya crops.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: February 14, 1984
    Assignee: Rhone-Poulenc Agrochimie
    Inventors: Andre Disdier, Guy Borrod, Stephane Trinh
  • Patent number: 4424396
    Abstract: Anilino acids of the formula ##STR1## wherein R is H or a metal cation; R.sub.2 is hydrogen or lower alkyl of 1 to 5 carbon atoms, lower alkenyl of 2 to 5 carbon atoms, lower haloalkyl of 1-4 carbon atoms, lower haloalkenyl of 2 to 4 carbon atoms, or lower cycloalkyl of 3 to 4 carbon atoms, Y is hydrogen, chloro, methyl group, or trifluoromethyl group, and X is hydrogen, chloro, or fluoro are prepared by reaction of an aryl halide of the formula ##STR2## where X.sup.1 is chloro or fluoro and X and Y are as defined above with the proviso that when X.sup.1 is chloro, X is hydrogen or chloro, and when X and Y are both chloro, X.sup.1 is fluoro with an .alpha.-amino acid of the formula ##STR3## where R and R.sub.2 are as defined above.
    Type: Grant
    Filed: July 21, 1982
    Date of Patent: January 3, 1984
    Assignee: Occidental Chemical Corporation
    Inventors: R. Simon-Bierenbaum, Ernest W. Ertley, Frederick J. Goetz, David Y. Tang
  • Patent number: 4421756
    Abstract: This invention concerns a novel compound represented by the general formula (I), a process for producing the novel compound of the formula (I) by reacting the compound of the formula (II) with the compound of the formula (III), as well as an anti-inflammatory and analgesic composition containing the compound of the formula (I): ##STR1## (R represents hydrogen or lower alkyl group).
    Type: Grant
    Filed: August 18, 1981
    Date of Patent: December 20, 1983
    Assignee: Daito Koeki Kabushiki Kaisha
    Inventors: Tatsuo Shinohara, Yukihiro Oguri, Yukio Fujimori, Hiroyuki Kondo
  • Patent number: 4410724
    Abstract: There is provided a process for production of o-(2,6-dichloroanilino)phenylacetic acid or a salt thereof by reacting o-chlorophenylacetic acid or an alkali metal salt thereof with 2,6-dichloroaniline in the presence of a base and at least 0.5 mol of a copper catalyst per mol of o-chlorophenylacetic acid in a polar solvent.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: October 18, 1983
    Assignee: Zenyaku Kogyo Kabushiki Kaisha
    Inventors: Muneaki Takase, Tadahiro Nakamura, Kazuo Kamiya, Toshiyuki Takezawa, Hiroaki Yamazaki, Takashi Iwaki
  • Patent number: 4410529
    Abstract: Novel 6-(p-acylaminophenyl)-4,5-dihydro-3(2H)-pyridazinones, whose acyl radical is derived from a cycloalkylcarboxylic acid, processes for their preparation, pharmaceutical formulations containing these compounds, and their use as drugs in thrombo-embolic disorders and as anti-hypertensives.
    Type: Grant
    Filed: June 12, 1981
    Date of Patent: October 18, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Marco Thyes, Horst Koenig, Dieter Lenke, Hans D. Lehmann, Josef Gries
  • Patent number: 4409213
    Abstract: Prostanoid compounds are described having the formula: ##STR1## where A is a cyclopentane ring, which is substituted by oxo and/or hydroxy or etherified hydroxy and may be saturated or unsaturated; X is --CH.dbd.CH-- or --(CH.sub.2).sub.2 --; R is alkyl having a terminal --COOH or ester group; and Y is amino or substituted amino, particularly heterocyclic amino.The compounds have bronchodilator activity and/or inhibit blood platelet aggregation.The preparation and pharmaceutical formulation of the compounds is also described.
    Type: Grant
    Filed: November 10, 1982
    Date of Patent: October 11, 1983
    Assignee: Glaxo Group Limited
    Inventors: Eric W. Collington, Harry Finch, Roger F. Newton, Christopher J. Wallis
  • Patent number: 4407823
    Abstract: Phenylacetic acid derivatives of the formula ##STR1## wherein n is an integer of 2 to 5; ##STR2## R.sub.1 is hydrogen, halogen, trifluoromethyl, nitro or amino; R.sub.2 and R.sub.3 each independently is hydrogen or lower alkyl; or together form an ethylene group;X.sub.1 represents two hydrogen atoms or an oxo group; andY.sub.1 is cyano, hydroxyamidocarbonyl, carbamoyl, 5-tetrazolyl or carboxyl;and for derivatives wherein Y is carboxyl, salts thereof with physiologically compatible bases, esters thereof from physiologically acceptable alcohols and amides thereof from physiologically acceptable amines have valuable pharmacological activity, e.g., as antiinflammatory agents.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: October 4, 1983
    Assignee: Schering Aktiengesellschaft
    Inventors: Gerald Kirsch, Joachim-Friedrich Kapp, Clemens Rufer
  • Patent number: 4405358
    Abstract: Aralkylaniline derivatives of the general formula ##STR1## where R is alkoxy, cycloalkoxy, alkenyloxy, alkynyloxy, cyanoalkoxy, haloalkoxy, alkylthio, alkenylthio or alkynylthio or unsubstituted or substituted alkyl, cycloalkyl, alkenyl or alkynyl, Y is hydrogen, alkyl, halogen, alkoxy or haloalkyl, A is unsubstituted or substituted alkylene, Z is hydrogen, alkyl, haloalkyl, alkoxyalkyl, cycloalkyl, aralkyl, aryl, aryloxy, halogen, a C.sub.4 H.sub.4 -chain which is fused to the benzene radical to form an unsubstituted or substituted naphthyl radical, alkoxy, haloalkoxy, alkylthio, thiocyanato, cyano, ##STR2## R' and R" each, independently of one another, being hydrogen, alkyl, alkoxy, alkylthio, cycloalkyl or unsubstituted or substituted phenyl, and n is an integer from 1 to 4, and herbicides containing these compounds.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: September 20, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Wolfgang Rohr, Bruno Wuerzer
  • Patent number: 4402734
    Abstract: A herbicidal composition comprising a herbicidally effective amount of N-halogenoacylanilino-fatty acid or the ester derivative thereof represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents C.sub.1 -C.sub.4 allyl, R.sub.3 represents a hydrogen atom, alkyl having up to 10 carbon atoms, C.sub.3 -C.sub.5 alkenyl, C.sub.3 -C.sub.4 alkynyl or cyclohexyl, R.sub.4 represents lower alkyl substituted by 1-4 halogen atoms and Y represents C.sub.1 -C.sub.3 alkylene, as an effective ingredient, and a herbicidally effective inert carrier.
    Type: Grant
    Filed: October 17, 1973
    Date of Patent: September 6, 1983
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Keiichiro Akiba, Takeo Satomi, Akira Fujinami, Yasuhisa Asano, Nobuyuki Kameda, Akihiko Mine, Naganori Hino, Kohshi Tateishi
  • Patent number: 4398035
    Abstract: The invention concerns the novel compounds dialkyl 2-(3-fluoro-4-nitrophenyl)-2-methylmalonate IIIa and dialkyl 2-(3-fluoro-4-aminophenyl)-2-methylmalonate IVa useful as intermediates in an improved process for making 2-(2-fluoro-4-biphenylyl)propionic acid, known as flurbiprofen, having the formula ##STR1## and ester thereof. It has anti-inflammatory activity which is about 240 times that of aspirin and analgesic activity which is about 180 times that of aspirin in standard laboratory tests. However, despite this high activity, the toxicity (LD.sub.50) is only 1.2 to 2.4 times greater than that of aspirin in standard laboratory tests.Also within the invention is a novel method of making the above intermediates and analogs thereof useful to prepare corresponding biaryl compounds which have pharmaceutical uses.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: August 9, 1983
    Assignee: The Upjohn Company
    Inventor: Jerry A. Walker
  • Patent number: 4395391
    Abstract: Unsymmetrically substituted dicarboxylic-acid-bis-(2,4,6-triiodo-anilides) of formula I ##STR1## wherein X is straight-chain or branched alkylene interrupted by one or more oxygen atoms,R.sup.1 is --NHacyl, --CH.sub.2 NHacyl, or --CONHR.sup.3 wherein R.sup.3 is hydrogen or a lower straight-chain or branched optionally mono- or poly-hydroxylated, alkyl residue, and where any hydroxyl groups present may be functionally modified, andR.sup.2 is hydrogen or lower alkyl, and their salts,are extraordinarily well suited, in view of their good pharmacological and physico-chemical properties, as water-soluble x-ray contrast media for all fields of application, in particular for i.v. cholegraphy and for computer tomography.
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: July 26, 1983
    Assignee: Schering Aktiengesellschaft
    Inventors: Heinrich Pfeiffer, Wolfgang Mutzel, Ulrich Speck
  • Patent number: RE32944
    Abstract: Novel aromatic carboxylic amides of the general formula: ##STR1## wherein each of R.sub.1 and R.sub.2 is a hydrogen atom or an alkyl group having 1-4 carbon atoms, R.sub.3 and R.sub.4 are hydrogen atoms or together form another chemical bond, each X is a hydroxyl group, a halogen atom, an alkyl group having 1-4 carbon atoms and an alkoxy group containing 1-4 carbon atoms, and n is an integer of 1-3 with the proviso that when .[.Xs.]. .Iadd.X's .Iaddend.are alkyl or alkoxy groups, they may be connected together to form a ring, as well as pharmaceutically acceptable salts thereof.These compounds possess a strong antiallergenic action and are thus useful for treatment of asthma, hay fever, .[.anticaria.]. .Iadd.urticaria .Iaddend.and atopic dermatitis.The above aromatic carboxylic amides can be prepared by reacting a reactive functional derivative of the general formula: ##STR2## where R.sub.1, R.sub.2, R.sub.3, R.sub.
    Type: Grant
    Filed: June 1, 1977
    Date of Patent: June 6, 1989
    Assignee: Kissei Yakuhin Kogyo Kabushiki
    Inventors: Kozaburo Harita, Yukiyoshi Ajisawa, Kinji Iizuka, Yukihiko Kinoshita, Tetsuhide Kamijo, Michihiro Kobayashi