Patents Represented by Attorney William J. Stein
  • Patent number: 4421736
    Abstract: Sustained release formulations for the anorectic agent, diethylpropion hydrochloride, are disclosed which are suitable for use in capsules.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: December 20, 1983
    Assignee: Merrel Dow Pharmaceuticals Inc.
    Inventor: Eugene L. Walters
  • Patent number: 4412953
    Abstract: A process for preparing 16.alpha.-hydroxy-17.alpha.-aminopregnane derivatives through the opening of the corresponding 16.alpha., 17.alpha.-epoxides with amines.The use of the thus obtained compounds as intermediates in the synthesis of pharmacologically active pregnano-[17.alpha.,16.alpha.-d]oxazolines is also claimed.
    Type: Grant
    Filed: November 18, 1981
    Date of Patent: November 1, 1983
    Assignee: Gruppo Lepetit, S.p.A.
    Inventor: Giorgio Winters
  • Patent number: 4411907
    Abstract: 3H-naphth[1,2-d]imidazole derivatives of formula ##STR1## wherein R stands for hydrogen, methyl or ethyl, R.sub.1 represents hydrogen, methyl or ethyl, R.sub.2 represents hydrogen, methyl, ethyl, phenyl or substituted phenyl, the symbol R.sub.3 stands for a phenyl radical optionally substituted and R.sub.4 and R.sub.5, each independently, may represent hydrogen, halogen, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkylthio, (C.sub.1 -C.sub.4)alkoxy or halo-(C.sub.1 -C.sub.4)alkoxy, are described. Also described is the process for preparing the novel compounds, their use as antiinflammatory agents and the pharmaceutical compositions containing them.
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: October 25, 1983
    Assignee: Gruppo Lepetit, S.p.A.
    Inventor: Emilio Toia
  • Patent number: 4411905
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is H or NH.sub.2 ; R.sub.2 is C.sub.1-6 straight or branched chain alkyl; --CH.sub.2 OH; --(CH.sub.2).sub.n --O--(CH.sub.2).sub.m --CH.sub.3 ; phenyl; or --(CH.sub.2).sub.p NH.sub.2 ;n is 1-3;m is 0-3; andp is 1-5;and the pharmaceutically acceptable acid addition salts of those compounds of basic character,have antisecretory activity.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: October 25, 1983
    Assignee: Richardson-Merrell Inc.
    Inventors: William L. Albrecht, Winton D. Jones
  • Patent number: 4405530
    Abstract: Certain .alpha.-(fluoromethyl or difluoromethyl)-.alpha.-aminoacetonitriles are prepared by treating the appropriate .alpha.-(fluoromethyl or difluoromethyl) ketimine magnesium halide with hydrogen cyanide or with an alkali metal cyanide or ammonium cyanide and a proton source. The products are useful as intermediates for making .alpha.-(fluoromethyl or difluoromethyl)-.alpha.-amino acids having pharmacological activity.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: September 20, 1983
    Assignee: Merrell Toraude et Compagnie
    Inventor: Fritz E. Gerhart
  • Patent number: 4402970
    Abstract: 1,7-Dihydro-pyrrolo[3,4-e][1,4]diazepin-2(1H)-ones of the formula ##STR1## wherein R is lower alkyl, R.sub.1 stands for hydrogen, methyl, ethyl or phenyl, R.sub.2 is hydrogen or lower alkyl and R.sub.3 is hydrogen, chloro, fluoro, bromo, trifluoromethyl or methoxy are described with anticonvulsant and anti-anxiety activity.Also described is the process for preparing the above compounds and pharmaceutical preparations containing them.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: September 6, 1983
    Assignee: Gruppo Lepetit S.p.A.
    Inventors: Luigi Mariani, Giorgio Tarzia
  • Patent number: 4400380
    Abstract: Compounds of the formula ##STR1## wherein R is H, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, 3,4-methylenedioxy, CF.sub.3, NO.sub.2, NH.sub.2, N(C.sub.1-4 alkyl).sub.2, CN, OH, --S(C.sub.1-4 alkyl) or --SO.sub.2 (C.sub.1-4 alkyl); R.sub.1 and R.sub.2 are independently each H or C.sub.1-4 alkyl or taken together with the attached N atom are morpholino, piperidino, pyrrolidino, piperazino, or N-- C.sub.1-4 -alkyl piperazino; and, when R is halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, x is 0-3 and, otherwise, is 0 or 1;or a pharmaceutically acceptable salt thereof with an acid or for the compounds wherein R.sub.1 and R.sub.2 are both not H, a quaternary ammonium salt thereof with a C.sub.1-4 alkyl halidehave valuable antiviral activity, e.g., for treatment of infections caused by a herpes virus.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: August 23, 1983
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Harry W. Ritter, Michael L. Edwards
  • Patent number: 4399151
    Abstract: .alpha.-Substituted amines and .alpha.-substituted-.alpha.-amino acids are described which are useful in inhibiting the growth of protozoa in animals.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: August 16, 1983
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Albert Sjoerdsma, Peter P. McCann
  • Patent number: 4391817
    Abstract: A new class of pyrrolo-diazepines with anticonvulsant and anti-anxiety activity of the general formula ##STR1## wherein R is (C.sub.1 -C.sub.4)alkyl, R.sub.1 is chloro, bromo or nitro, R.sub.2 is hydrogen or (C.sub.1 -C.sub.4)alkyl and R.sub.3 is hydrogen, chloro, bromo, fluoro, trifluoromethyl or methoxy. The new compounds are prepared starting from the corresponding compounds wherein R.sub.1 is hydrogen through halogenation or nitration. Pharmaceutical preparations containing the new compounds of formula I are also described.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: July 5, 1983
    Assignee: Gruppo Lepetit S.p.A.
    Inventors: Luigi Mariani, Giorgio Tarzia
  • Patent number: 4388466
    Abstract: Novel halomethyl derivatives of amino acids of the following general structure ##STR1## wherein Y is FCH.sub.2 --, F.sub.2 CH.sub.2 --, F.sub.3 C--, ClCH.sub.2 -- or Cl.sub.2 CH--; R.sub.1 is hydroxy, a straight or branched alkoxy group of from 1 to 8 carbon atoms, --NR.sub.11 R.sub.12 wherein each of R.sub.11 and R.sub.12 is hydrogen or a straight or branched lower alkyl group of from 1 to 4 carbon atoms, ##STR2## wherein R.sub.5 is hydrogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms, benzyl or p-hydroxybenzyl; R.sub.2 is hydrogen, alkylcarbonyl wherein the alkyl moiety has from 1 to 4 carbon atoms and is straight or branched, alkoxycarbonyl wherein the alkoxy moiety has from 1 to 4 carbon atoms and is straight or branched or ##STR3## wherein R.sub.6 is hydrogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms, benzyl or p-hydroxybenzyl; each of R.sub.3 and R.sub.
    Type: Grant
    Filed: November 3, 1981
    Date of Patent: June 14, 1983
    Assignee: Merrell Toraude et Compagnie
    Inventors: Philippe Bey, Michel Jung
  • Patent number: 4385179
    Abstract: The present invention refers to a new process for preparing N-2,3,4,5-substituted-1H-pyrrol-1-yl)-6-substituted amino-3-pyridazineamine, known as antihypertensive agents. The process is characterized in that a suitable 3,6-dihalogenopyridazine is reacted with hydrazine hydrate or other hydrazine derivatives of formula NH.sub.2 NHR, the obtained compound is reacted with a suitable dicarbonyl compound yielding first an alcandione-bis-[6-halogen-3-pyridazininyl]hydrazone, and then a 6-halogen-3-pyrrolylpyridazineamine derivative which is in turn reacted with an amine to yield the desired compounds.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: May 24, 1983
    Assignee: Gruppo Lepetit S.p.A.
    Inventor: Elvio Bellasio
  • Patent number: 4385062
    Abstract: 1-[(2-Mercaptocycloalkyl)carbonyl]-L-proline derivatives of the formula ##STR1## wherein R, R.sup.1, and R.sup.2, each independently, represent hydrogen or a (C.sub.1 -C.sub.4)alkyl radical, n represents the integer 1, 2, 3, 4, or 5, and, in each of the n (CR'.sub.2) groups, R' represents hydrogen or (C.sub.1 -C.sub.4)alkyl, are described as well as the process for their manufacture, the intermediates for their synthesis and their use as antihypertensive agents.
    Type: Grant
    Filed: March 3, 1981
    Date of Patent: May 24, 1983
    Assignee: Gruppo Lepetit S.p.A.
    Inventors: Romeo Ciabatti, Giovanna Padova
  • Patent number: 4382946
    Abstract: The use of lofexidine and its pharmaceutically acceptable salts in alleviating the adverse symptoms of drug withdrawal is disclosed.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: May 10, 1983
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventor: Albert Sjoerdsma
  • Patent number: 4375477
    Abstract: Beta-monofluoromethyl beta-alanine, beta-difluoromethyl beta-alanine and pharmaceutically acceptable esters and amides derived from the acid group, amides derived from the amine group, and salts thereof are novel compounds which inhibit .gamma.-aminobutyric acid transaminase (GABA-T).
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: March 1, 1983
    Assignee: Merrell Toraude et Compagnie
    Inventors: Philippe Bey, Michael Jung, Fritz Gerhart
  • Patent number: 4374128
    Abstract: Novel compounds of the following general Formula I are useful pharmacological agents: ##STR1## wherein: Ado represents 5'-deoxyadenosin-5'-yl;R.sub.1 represents methyl, ethyl or, preferably hydrogen;R.sub.2 represents C.sub.1 -C.sub.8 alkylene;R.sub.4 represents C.sub.1 -C.sub.8 alkylene;R.sub.5 represents hydrogen, C.sub.1 -C.sub.6 alkyl or --R.sub.6 NHR.sub.7 ;R.sub.6 represents C.sub.1 -C.sub.4 alkylene; andR.sub.7 represents hydrogen or C.sub.1 -C.sub.6 alkyl;and pharmaceutically acceptable acid addition salts thereof.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: February 15, 1983
    Assignee: Merrell Toraude et Compagnie
    Inventors: Philippe Bey, Michel Jung, Michael Kolb, Charles Danzin
  • Patent number: 4353828
    Abstract: Fluorinated alkenylamines of the Formula V ##STR1## wherein n represents 0, 1, 2 or 3; R.sub.1 represents hydrogen or C.sub.1 -C.sub.10 alkyl and Y represents (a), when n represents O, CH.sub.2 F, (b), when n represents 1, CH.sub.2 F or CHF.sub.2, or (c) when n represents 2 or 3, CH.sub.2 F, CHF.sub.2 or CF.sub.3 are novel process intermediates. They are obtained by hydrolysis and subsequent reduction of the corresponding alkenyl fluorinated methyl ketimine magnesium halides, which are novel compounds resulting from reaction of the corresponding alkenyl magnesium halides with the corresponding fluorinated acetonitriles. The fluorinated alkenylamines of Formula V are oxidized while the amino group is protected to provide, after removal of the amine protecting group, the corresponding fluorinated methyl aminoalkanoic acids which are useful pharmacological or anti-bacterial agents.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: October 12, 1982
    Assignee: Merrell Toraude et Compagnie
    Inventors: Philippe Bey, Fritz Gerhart, Viviane Van Dorsselaer
  • Patent number: 4347255
    Abstract: A method of reducing local hemorrhage and tissue necrosis resulting from the bite or sting of a venomous animal whereby an envenomated mammal is treated with a compound of the formula: ##STR1## or a corresponding disulfide wherein n is 1, 2 or 3; Z is O, S or NH; R is H, a straight or branched chain lower alkyl group of from 1 to 4 carbon atoms, hydroxy, a straight or branched chain lower alkoxy group of from 1 to 4 carbon atoms, fluoro, chloro, bromo, iodo or trifluoromethyl; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: August 7, 1981
    Date of Patent: August 31, 1982
    Assignee: Richardson-Merrell Inc.
    Inventor: Eugene L. Giroux
  • Patent number: 4342780
    Abstract: 2-Amino-2-fluoromethyl-3-(substituted)phenyl propionic acids and derivatives thereof are coadministered with dopamine for the treatment of schizophrenia, mania, tardive dyskinesia, anxiety, or depression.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: August 3, 1982
    Assignee: Merrell-Toraude et Cie
    Inventors: Philippe Bey, Michel Jung
  • Patent number: 4341698
    Abstract: Novel analgesic and antipsychotic agents having the formula ##STR1## wherein Q is ##STR2## in which R.sub.1 is hydrogen, hydroxy or halogen and R.sub.4 is hydrogen or, R.sub.1 and R.sub.4 are both hydroxy; Z is hydrogen or straight chain lower alkyl having from 1 to 4 carbon atoms and X is methylene, carbonyl, hydroxymethylene, thio, sulfinyl or sulfonyl, or Z and X, taken together, are methylidenyl, with the proviso that when X is sulfonyl or sulfinyl, Z is other than hydrogen; R.sub.5 is hydrogen or halogen, and R.sub.2 is H, a straight or branched lower alkyl group having from 1 to 4 carbon atoms, the group ##STR3## or the group ##STR4## wherein R.sub.3 is hydroxy, amino, alkylamino or dialkylamino wherein the alkyl moiety is straight or branched and has from 1 to 4 carbon atoms, diastereomers, enantiomers and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: July 27, 1982
    Assignee: Richardson-Merrell Inc.
    Inventors: Albert A. Carr, Robert A. Farr, John M. Kane
  • Patent number: 4336054
    Abstract: .alpha.-Substituted amines and .alpha.-substituted-.alpha.-amino acids are described which are useful in controlling the growth of algae.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: June 22, 1982
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventor: Albert Sjoerdsma