Patents Examined by Frederick F. Tsung
  • Patent number: 4980482
    Abstract: A process for the preparation of activated esters of certain N-maleoyl amino acids is disclosed. In the process, maleamic acids are cyclized and esterified to the desired products by the initial reaction with an acid halide reagent followed by a subsequent reaction with the appropriate hydroxyl-containing compound. The activated esters of N-maleoyl amino acids are particularly suited for linking compounds containing an amino group with those containing a thiol group.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: December 25, 1990
    Assignee: The Dow Chemical Company
    Inventor: Kevin A. Frazier
  • Patent number: 4978754
    Abstract: A process for the preparation of an N-substituted unsaturated carboxylic acid amide represented by the following formula: ##STR1## wherein R.sup.1 means a hydrogen atom or methyl group Y denotes a methylene group, oxygen atom or methylimino group, m and n stand individually for an integer of 0 to 5, and m+n is an integer of 3 to 5. The process comprises reacting a specified .beta.-alkoxy-substituted carboxylate with a specified cyclic amine to form a .beta.-alkoxy-substituted carboxylic acid amide compound and then removing an alcohol from the carboxylic acid amide compound in the presence of a basic catalyst to form an unsaturated group.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: December 18, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Akira Ibi, Masanori Kitagawa, Eiichi Sagawa, Koichi Takeuchi, Etsuo Ohkawado
  • Patent number: 4973350
    Abstract: Fungicidal 1-aminomethyl-3-(2-fluoro-3-chlorophenyl)-4-cyano-pyrrole derivatives of the formula ##STR1## in which R stands for a ##STR2## wherein R.sup.1 stands for optionally substituted alkyl, for alkenyl, alkinyl or cycloalkyl, or for in each case optionally substituted aralkyl or aryl,R.sup.2 stands for in each case optionally substituted heterocyclylalkyl, heterocyclylalkenyl, heterocyclylalkinyl or heterocyclyl, for dialkylaminoalkyl or for in each case optionally substituted cycloalkylalkyl or phenethyl,R.sup.3 stands for hydrogen or alkyl andR.sup.4 stands for cyano, alkanoyl, alkoxycarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, for alkylsulphinyl, for alkylsulphonyl, for phenylsulphinyl or for phenylsulphonyl.The compound where R is replaced by an election-withdrawing leaving group is a novel intermediate.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: November 27, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Detlef Wollweber, Wilhelm Brandes
  • Patent number: 4967005
    Abstract: A process is described for the conversion of oxyalkylated alcohols to the corresponding alkoxylated tertiary amines, such as aminated ethoxylated amines, by reaction with a secondary amine at ambient pressure and at above ambient temperature in the presence of hydrogen and a reductive amination catalyst using, as a reductive amination catalyst, metallic iridium.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: October 30, 1990
    Assignee: Ethyl Corporation
    Inventor: Kim R. Smith
  • Patent number: 4954158
    Abstract: The present invention is 2,3-methanoproline, derivatives thereof, and biologically active molecules incorporating 2,3-methanoproline. These compounds are useful as inhibitors of ethylene production in plant material, and as synthetic analogs of biologically active molecules.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: September 4, 1990
    Assignee: University of Georgia Research Foundation, Inc.
    Inventor: Charles H. Stammer
  • Patent number: 4948808
    Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m--, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: August 14, 1990
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
  • Patent number: 4948801
    Abstract: Novel aminomethyloxooxazolidinyl arylbenzene derivatives, wherein the aryl includes the phenyl, substituted phenyl, pyridyl, and substituted pyridyl groups, such as (l)-N-{3-[4-(4'-pyridyl)phenyl]-2-oxooxazolidin-5-ylmethyl{acetamide, possess useful antibacterial activity.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: August 14, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Randall K. Carlson, Chung-Ho Park, Walter A. Gregory
  • Patent number: 4946955
    Abstract: A method for preparation of polycyclic 1,3-thiazolidines is described. The method comprises reacting a fluoride ion source, in a solvent, with an onium salt synthesized by the reaction of a nitrogenous heteroaromatic compound with a halomethyl trimethylsilylmethyl sulfide, the halomethyl trimethylsilylmethyl sulfide being selected from the group consisting of chloromethyl trimethylsilylmethyl sulfide, bromomethyl trimethylsilylmethyl sulfide, or iodomethyl trimethylsilylmethyl sulfide.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: August 7, 1990
    Assignee: Toray Silicone Company Limited
    Inventor: Akira Hosomi
  • Patent number: 4945169
    Abstract: Novel homo bis-maleimide compounds containing sulfonate linkages are made by reacting an aromatic disulfonyl halide with m- or p-hydroxy phenyl maleimide and have the following formula: ##STR1## Similarly, co-bis-maleimides are made by reaching an aromatic disulfonyl halide, aromatic dihydroxy compound and m or p hydroxy phenyl maleimide having the structural formula: ##STR2## Herein R and R' are the same or different and are divalent radicals selected from the group consisting of meta arylene, para arylene, naphthalene and radicals of the formula A--A and A--Z--A wherein A is selected from the group consisting of meta arylene, para arylene and naphthalene and Z is selected from the group consisting of meta arylene, para arylene, naphthalene, carbonyl, sulfone, sulfide, sulfonyl, sulfonate, sulfoxide, ether, methylene, isopropyl, oxygen, alkyl, --CH.dbd.CH-- and --C.tbd.C-- and R.sub.1, R.sub.2, R.sub.3 and R.sub.
    Type: Grant
    Filed: July 6, 1988
    Date of Patent: July 31, 1990
    Assignee: Indspec Chemical Corporation
    Inventor: Bojayan Durairaj
  • Patent number: 4935525
    Abstract: Process for the industrial synthesis of (2S, 3 7aS)-2-carboxyperhydroindole by reduction of 2-carbox indole or of one of its esters to (R,S)-2-carboxyindo or of one of its esters which, after saponification, converted into the acid, the S isomer cf (R,S)-2-carboxyindoline being obtained by precipitation from the mixture of the two (R) and (S) isomers, in the presence of (+) methylbenzylamine, (S)-2-carboxyindoline being in its turn subjected to catalytic hydrogenation to give (2S, 3aS,7aS)-2-carboxyperhydroindole, after separation of (2S,3aR,7aR) isomer by crystallization.Application to the synthesis of carboxyalkyl d peptides capable of being employed in therapeutics.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: June 19, 1990
    Assignee: Adir et Cie
    Inventors: Michel Vincent, Jean Baliarda, Bernard Marchand, Georges Remond
  • Patent number: 4933462
    Abstract: A 3-(substituted)-2-oxazolidinone is prepared by refluxing equimolar proportions of a dialkanolamine and dimethyl carbonate in the absence of a catalyst. A yield of at least about 90 percent of a highly pure product is obtained.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: June 12, 1990
    Assignee: The Dow Chemical Company
    Inventor: Robert D. Dawe
  • Patent number: 4933001
    Abstract: Phenylalkenylcarboxylic acid and esters thereof of the general formula I ##STR1## where X is hydrogen or fluorine, R.sup.1 is hydrogen, C.sub.1 C.sub.6 -alkyl, C.sub.5 - or C.sub.6 -cycloalkyl, (C.sub.1 -C.sub.4 -alkoxy)-C.sub.2 -C.sub.4 -alkyl or (C.sub.1 -C.sub.4 -alkylthio)-C.sub.2 -C.sub.4 -alkyl; W is a divalent radical --CH.dbd.CR.sup.2 --; --CH.dbd.CY--; --CH.dbd.CR.sup.2 --CH.sub.2 --; --CH.dbd.CR.sup.2 --CH.dbd.CR.sup.3 -- or ##STR2## where Y is chlorine or bromine and R.sup.2 and R.sup.3 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, with the proviso that X is not F when W is --CH.dbd.CR.sup.2 --, their manufacture, and their use as herbicides.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: June 12, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Plath, Karl Eicken, Norbert Goetz, Jochen Wild, Norbert Meyer, Bruno Wuerzer
  • Patent number: 4929731
    Abstract: The present invention relates to a method for the synthesis of certain bridged fused ring pyridines. Such bridged fused ring pyridines can be converted to huperzine A and analogs of huperzine A. The present invention also covers such bridged fused ring pyridines, compounds utilized for the preparation of the bridged fused ring pyridines and analogs of huperzine A.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 29, 1990
    Assignee: University of Pittsburgh
    Inventors: Alan P. Kozikowski, Yan Xia
  • Patent number: 4929627
    Abstract: Benzo-fused cycloalkane and oxa- and thia-cycloalkane trans-1,2-diamine compounds of the formula: ##STR1## wherein A, B, C, D, n, X, Y, R, R.sup.1, R.sup.2 and R.sup.3 are as defined in the specification, e.g., trans-3,4-dichloro-N-methyl-N-[2-(pyrrolidin-1-yl)-5-methoxy-1,2,3,4-tetra hydronaphth-1-yl]benezeneacetamide, and the pharmaceutically acceptable salts or N-oxides thereof, are useful as analgesics and/or diuretics.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: May 29, 1990
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Penio Pennev, Parthasarathi Rajagopalan, Richard M. Scribner
  • Patent number: 4925484
    Abstract: N-Phenyltetrahydrophtalimides of the general formula I ##STR1## where R.sup.1 is hydrogen or halogen, R.sup.2 is halogen, R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.4 is unsubstituted or C.sub.1 -C.sub.3 -alkoxy-substituted C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.4 -alkenyl or C.sub.3 -C.sub.4 -alkynyl, and R.sup.5 is hydrogen or C.sub.1 -C.sub.4 - alkyl, methods for their manufacture, and their use as herbicides.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: May 15, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Lothar Rueb, Karl Eicken, Hans J. Pander, Peter Plath, Barbara Schwalge, Bruno Wuerzer, Norbert Meyer
  • Patent number: 4921869
    Abstract: Aminomethyl oxooxazolidinyl cycloalkylbenzene derivatives, such as l-N-[3-(2,3-dihydro-1-oxo-1H-inden-5-yl)-2-oxooxazolidin-5-ylmethyl]acetam ide, possess useful antibacterial activity.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: May 1, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Chia-Lin J. Wang, Mark A. Wuonola
  • Patent number: 4919704
    Abstract: There are disclosed novel herbicidally active pyrrolidine-2,5-diones and 4,5,6,7-tetrahydroisoindolel,3-diones of formula ##STR1## wherein R.sup.1 is hydrogen; or C.sub.1 -C.sub.4 alkyl;R.sup.2 is C.sub.1 -C.sub.4 alkyl; orR.sup.1 and R.sup.2, when taken together, are a (CH.sub.2).sub.4 group which may be substituted by one or two C.sub.1 -C.sub.4 alkyl groups;X is hydrogen; or halogen;A is ##STR2## or O--R.sup.4 ; R.sup.3 is hydroxy; (C.sub.1 -C.sub.8)-alkoxy; (C.sub.1 -C.sub.4)-alkoxy-(C.sub.1 -C.sub.4)-alkoxy-(C.sub.1 -C.sub.4)-akoxy; (C.sub.1 -C.sub.4)-alkylthio-(C.sub.1 -C.sub.4)-alkoxy; mono- or di(C.sub.1 -C.sub.4)-alkylamino-(C.sub.1 -C.sub.4)-alkoxy; (C.sub.1 -C.sub.8)-cyanoalkoxy; (C.sub.3 -C.sub.8)-alkenyloxy; (C.sub.3 -C.sub.8)-haloalkenyloxy; (C.sub.3 -C.sub.8)-alkynyloxy; (C.sub.3 -C.sub.7)-cycloalkoxy; (C.sub.3 -C.sub.7)-cycloalkyl-(C.sub.1 -C.sub.4)-alkoxy; halo(C.sub.3 -C.sub.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: April 24, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans Moser, Georg Pissiotas, Hans-Georg Brunner
  • Patent number: 4910216
    Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a hydrogen atom or a methoxy group, and A is a C.sub.1 -C.sub.4 alkylene group, or a pharmaceutically acceptable salt thereof. This compound is useful as a medicine, particularly as a lipoxygenase inhibitor for polyunsaturated fatty acids.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: March 20, 1990
    Assignee: Teikoku Hormone Mfg. Co., Ltd.
    Inventors: Yasushi Suzuki, Yukio Hasegawa, Michitaka Sato, Morinobu Saito, Norio Yamamoto, Katsuhiko Miyasaka, Takashi Mikami, Katsuhiko Miyazawa
  • Patent number: 4906636
    Abstract: 2-Substituted-1-naphthols are 5-lipoxygenase inhibitors which make them useful in the treatment of inflammation, obstructive lung disease and/or psoriasis. Useful 2-substituent groups are alkyls, alkenyls, alkynyls, cycloalkyls, cycloalkenyls, the groups CH.sub.2 --C.tbd.C--(CH.sub.2).sub.m R.sup.5 and CH.dbd.CH--(CH.sub.2).sub.n R.sup.5 (where m is 1-4, n is 0-3 and R.sup.5 includes phenyl, COOR.sup.9, where R.sup.9 is H or alkyl or 1-4 carbons, AR.sup.6 (where A is a methylene chain and R.sup.6 is a variety of groups including Cl, Br, I, CHO, CN, COOR.sup.9, NH.sub.2, SC(NH)NH.sub.2, phenyl, P(O)(OR.sup.9).sub.2, etc.), and CHR.sup.7 R.sup.21 (where R.sup.7 is a variety of aromatic and heterocyclic groups and R.sup.21 is H, optionally substituted phenyl and a variety of heterocyclic groups).
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: March 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Douglas G. Batt
  • Patent number: 4906655
    Abstract: Novel 1,2-cyclohexylaminoaryl amides useful as analgesic agents having very high kappa-opioid affinity and selectivity and potency and useful as analgesics, diuretics, antiinflammatory and psychotherapeutic agents are disclosed. Methods for making the compounds and pharmaceutical compositions containing them are also disclosed.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: March 6, 1990
    Assignee: Warner-Lambert Company
    Inventors: David C. Horwell, David C. Rees