Tricyclo Ring System Patents (Class 564/427)
  • Publication number: 20030018218
    Abstract: A novel arylamine compound represented by the following general formula (1): 1
    Type: Application
    Filed: July 12, 2002
    Publication date: January 23, 2003
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio Hosokawa, Masakazu Funahashi
  • Publication number: 20020182439
    Abstract: This invention relates to fluorene compounds and their use as a hole transport material in an electro-luminescence device.
    Type: Application
    Filed: May 1, 2001
    Publication date: December 5, 2002
    Inventors: Yu-Tai Tao, Chung-Wen Ko
  • Publication number: 20020173672
    Abstract: An improved method is described for making 9-deoxy-PGF1-type compounds. In contrast to the prior art, the method is stereoselective and requires fewer steps than the known methods for making these compounds.
    Type: Application
    Filed: July 1, 2002
    Publication date: November 21, 2002
    Applicant: UNITED THERAPEUTICS CORPORATION
    Inventors: Robert M. Moriarty, Raju Penmasta, Liang Guo, Munagala S. Rao, James P. Staszewski
  • Publication number: 20020137969
    Abstract: A novel arylamine compound represented by the following general formula (1): 1
    Type: Application
    Filed: September 5, 2001
    Publication date: September 26, 2002
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Chishio Hosokawa, Masakazu Funahashi
  • Patent number: 6420413
    Abstract: A compound selected from those of formula (I): wherein: denotes single bond or double bond, n is integer from 1 to 6 inclusive, R1, and R2 represent a group selected from hydrogen, linear or branched (C1-C6)-alkyl, aryl, arylalkyl, cycloalkyl, cycloalkylalkyl, alkenyl, alkynyl, heterocycloalkyl, heterocycloalkylalkyl, heteroaryl, and heteroarylalkyl, X represents a group selected from —CH═CH—, oxygen, S(O)m wherein m is integer from 0 to 2 inclusive, and NR3 wherein R3 represents a group as defined in the description, Y represents CH or CH2 depending on whether denotes single bond or double bond, or may have the additional meaning of oxygen when X represents oxygen, T represents monocyclic or polycyclic (C3-C10)cycloalkyl optionally containing within the ring system oxygen, selenium, S(O)p, NR3, or SiR4R5 wherein p, R3, R4, and R5 are as defined in the description, its isomers and addition salts thereof with a pharmaceutically-accep
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: July 16, 2002
    Assignee: Les Laboratories Servier
    Inventors: Jean-Louis Peglion, Aimée Dessinges, Bertrand Goument, Mark Millan, Françoise Lejeune, Mauricette Brocco
  • Patent number: 6417402
    Abstract: The present invention relates to squaraine dye containing terminal aminoanthracene or acridine groups and to a process for preparation thereof.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 9, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Suresh Das, George Thomas Kakkudiyil, Biju Vasudevan Pillai, Santosh Unni, Suresh Velate
  • Publication number: 20020087025
    Abstract: An improved method is described for making 9-deoxy-PGF1-type compounds. In contrast to the prior art, the method is stereoselective and requires fewer steps than the known methods for making these compounds.
    Type: Application
    Filed: February 15, 2002
    Publication date: July 4, 2002
    Applicant: UNITED THERAPEUTICS CORPORATION
    Inventors: Robert M. Moriarty, Raju Penmasta, Liang Guo, Munagala S. Rao, James P. Staszewski
  • Patent number: 6387544
    Abstract: Organic light emitting devices comprising a heterostructure for producing electroluminescence having a hole transporting layer with a glass structure. The hole transporting layer comprises a compound having a symmetric molecular structure. The end groups of the symmetric molecule are hole transporting diaryl amine moieties.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: May 14, 2002
    Assignees: The Trustees of Princeton University, The University of Southern California
    Inventors: Mark E. Thompson, Loy Douglas, Stephen R. Forrest, Bryan E. Koene, Diarmuid O'Brien
  • Publication number: 20010008711
    Abstract: An organic light-emitting device comprising a light-emitting layer or a plurality of organic compound thin layers including a light-emitting layer formed between a pair of electrodes, wherein at least one layer comprises at least one kind of compound represented by the following formula (1): 1
    Type: Application
    Filed: January 8, 2001
    Publication date: July 19, 2001
    Inventor: Tatsuya Igarashi
  • Patent number: 6187543
    Abstract: The present invention relates, in general, to tristetraprolin (TTP) and, in particular, to methods of modulating levels of tumor necrosis factor &agr; (TNF&agr;) using TTP or nucleic acid sequences encoding same. The invention further relates to methods of screening for compounds for their ability to inhibit TNF&agr; biosynthesis.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: February 13, 2001
    Assignee: Duke University
    Inventor: Perry J. Blackshear
  • Patent number: 5945566
    Abstract: New amino compounds of formula: ##STR1## wherein n and Y are as defined in the description, in racemic form or in the form of optical isomers.and addition salts thereof with pharmaceutically acceptable acids.Those compounds may be used as medicaments.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: August 31, 1999
    Assignee: Adir et Compagnie
    Inventors: Jean-Louis Peglion, Mark Millan
  • Patent number: 5912386
    Abstract: The present invention relates to compounds of the formula (I)R.sup.1 --NH--B--NH--R.sup.2 (I),whereinR.sup.1 and R.sup.2 independently of one another denote an unsubstituted or substituted radical of the formula ##STR1## and B represents an unsubstituted or substituted cycloalkylene-containing bridge member, which are suitable for bulk dyeing of plastics.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: June 15, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dietmar Kalz, Karl-Heinz Reinhardt, Helmut Blaser
  • Patent number: 5840984
    Abstract: Odor formation during storage of (hydrocarbylthio)aromatic amines due to formation and release of odoriferous sulfur-containing species such as dihydrocarbyldisulfides, is suppressed. To accomplish this, a small amount of N,N-dihydrocarbylhydroxylamine odor-inhibitor (e.g., N,N-diethylhydroxylamine) is blended with the (hydrocarbylthio)aromatic amine. This enables products such as a mixture of 3,5-di(methylthio)-2,4-diaminotoluene and 3,5-di(methylthio)-2,6-diaminotoluene) to be stored for long periods of time with significantly reduced formation and release of odoriferous sulfur-containing species.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: November 24, 1998
    Assignee: Albemarle Corporation
    Inventors: Gregory H. Lambeth, Paul L. Wiggins, William R. Brown
  • Patent number: 5840980
    Abstract: A diamine compound of the following formula (1): ##STR1## wherein R.sub.1 is a hydrogen atom, a lower alkyl group or a lower alkoxy group, each of A.sub.1, A.sub.2 and A.sub.3 which are independent of one another, is a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a group of the following formula (2): ##STR2## wherein R.sub.1 is as defined above, and X is a substituted or unsubstituted arylene group or a substituted or unsubstituted heterocyclic bivalent group.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: November 24, 1998
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Mitsutoshi Anzai, Atsushi Takesue, Takanobu Watanabe, Chieko Inayoshi
  • Patent number: 5808155
    Abstract: An electrophotographic photoconductor having an electroconductive support and a photoconductive layer formed thereon containing as a photoconductive material at least one carbonate compound of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each is hydrogen, an alkyl group which may have a substituent, an aryl group which may have a substituent, or a condensed polycyclic group; Y is a bivalent arylene group which may have a substituent, ##STR2## in which Ar.sup.1 and Ar.sup.2 each is an arylene group which may have a substituent, R.sup.3 and R.sup.4 each is hydrogen, an alkyl group which may have a substituent or an aryl group which may have a substituent, and l is an integer of 1 or 2; and R.sup.1 and R.sup.2, or R.sup.1 and Y may independently form a ring; X is an alkyl group which may have a substituent or an aryl group which may have a substituent; m is an integer or 0 or 1; and n is an integer of 0 to 6.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: September 15, 1998
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Masaomi Sasaki, Chiaki Tanaka
  • Patent number: 5770763
    Abstract: Novel difunctionalized cyclobutabenzene monomers of the general formula: ##STR1## wherein Z can be hydrogens or a cyclobutane ring; and X and Y are carboxyl, amino, alcohol, isocyanate, acid halide, or bis-acyl halide groups. Exemplary difunctional bitricyclodecatriene monomers are ?2,2'-bidicyclo?2.4.0!octa-1,3,5-triene!-5,5'-dicarboxylic acid (BXTA) and ?2,2'-bitricyclo?6.2.0.0!deca-1,3,(6),7-triene!-7,7'-dicarboxylic acid (QXTA). The difunctionalized bitricyclodecatriene monomers can form part of a polymer backbone chain in which the multiple butane ring functionalities can be easily opened to produce strong, three-dimensional covalent bond crosslinking between polymer chains. The crosslinking can be induced simply by heating the polymer to a temperature in excess of 250.degree. C.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: June 23, 1998
    Assignee: The Board of Regents of the Univ. of Michigan
    Inventors: David C. Martin, Jeffrey S. Moore, Larry J. Markoski, Kenneth A. Walker, Gary E. Spilman
  • Patent number: 5750789
    Abstract: An unsaturated imide compound represented by formula (1): ##STR1## wherein Q is an alicyclic structure-containing hydrocarbon group having 4-20 carbon atoms; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.i and R.sub.j represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1-6 carbon atoms or a halogen-containing hydrocarbon group having 1-6 carbon atoms; each of a, b, c, d, e and f represents an integer of 0 to 4 satisfying a+b.ltoreq.4, c+d.ltoreq.4 and e+f.ltoreq.4 and D represents a divalent organic group having 2-24 carbon atoms and an ethylenically unsaturated double bond, a process for producing the unsaturated imide compound of formula (1) and intermediates for producing the unsaturated imide compound of formula (1). The unsaturated imide compound of formula (1) is well soluble in organic solvents and can give cured products excellent in heat resistance, low water absorption and flexibility.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: May 12, 1998
    Assignee: Sumitomo Chemical Company Limited
    Inventors: Yasuhiro Hirano, Yasuhiro Endo, Kazuo Takebe, Mitsuhiro Shibata, Shuichi Kanagawa, Yutaka Shiomi, Masatsugu Akiba, Shinichiro Kitayama
  • Patent number: 5726208
    Abstract: New compounds of formula: ##STR1## wherein: --A--D--E, X, n, Y and Z are as defined in the description, in racemic form and in the form of optical isomers,and their addition salts with pharmaceutically acceptable acids.Those compounds may be used as medicaments.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: March 10, 1998
    Assignee: Adir et Compagnie
    Inventors: Jean-Louis Peglion, Bertrand Goument, Jean-Christophe Harmange, Joel Vian, Aimee Dessinges, Mark Millan, Valerie Audinot
  • Patent number: 5705533
    Abstract: 10-thio-substituted 1,8-dihydroxy-9(10H) anthracenones, therapeutic compositions containing at least one of the 10-thio-substituted 1,8-dihydroxy-9(10H) anthracenones of the invention and methods of treating inflammatory conditions are provided.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 6, 1998
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Klaus Muller, Hsu-Shan Huang, Wolfgang Wiegrebe
  • Patent number: 5672728
    Abstract: An electrophotographic photoconductor comprises an electroconductive substrate and a photoconductive layer formed thereon comprising as an effective component at least one pyrenylamine derivative of formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, w, j, k, l, m and n are specifically defined in the specification. Furthermore, a novel pyrenylamine derivative for use in the above electrophotographic photoconductor, an aldehyde compound, which is an intermediate for producing the pyrenylamine derivative, and methods of preparing the pyrenylamine derivative and the aldehyde compound are disclosed.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: September 30, 1997
    Assignee: Ricoh Company, Ltd.
    Inventors: Chiaki Tanaka, Masaomi Sasaki, Tamotsu Aruga, Tomoyuki Shimada, Hiroshi Adachi
  • Patent number: 5672757
    Abstract: N-methyldeacetylcolchiceinamide derivatives represented by the formula ##STR1## wherein R denotes a residue obtained by removing COOH from a C.sub.3 -C.sub.7 sugar carboxylic acid, and hydroxyl groups present in the residue may properly be protected with a protecting group for a hydroxyl group.The N-methyldeacetylcolchiceinamide derivatives have less toxicity and strong effect for inhibiting proliferation of tumor cells, and are expected to be used as a carcinostatic.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: September 30, 1997
    Assignee: Ohgen Research Laboratories, Ltd.
    Inventor: Kiyoshi Akiyama
  • Patent number: 5663180
    Abstract: A class of 1,2-diarylcyclopentenyl compounds is described for use in treating inflammation and inflammation-related disorders. Compounds of particular interest are defined by Formula III: ##STR1## wherein each of R.sup.1 and R.sup.2 is independently selected from alkyl, hydrido, hydroxyalkyl, halo, haloalkyl, alkoxycarbonyl and carboxyl; wherein R.sup.5 is selected from alkylsulfonyl, haloalkylsulfonyl and sulfamyl; and wherein B is phenyl or pyridyl, wherein B is optionally substituted at a substitutable position with alkyl, halo, alkylthio, cyano, haloalkyl, alkoxy, hydroxyalkyl and alkoxyalkyl; or a pharmaceutically-acceptable salt thereof.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: September 2, 1997
    Assignee: G.D. Searle & Co.
    Inventors: David B. Reitz, Jinglin Li
  • Patent number: 5654481
    Abstract: There is provided an amine compound represented by formula (1): ##STR1## wherein Ar.sub.1 represents a substituted or unsubstituted aryl group; Ar.sub.2 represents a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted biphenylene group or a substituted or unsubstituted anthrylene group; R.sub.1 represents a hydrogen atom, a lower alkyl group or a lower alkoxy group; X represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; and Y represents a substituted or unsubstituted aryl group, or a group represented by formula (2) or (3) described in the specification.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: August 5, 1997
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Mitsutoshi Anzai, Atsushi Takesue, Takanobu Watanabe, Chieko Inayoshi
  • Patent number: 5631404
    Abstract: An electrophotographic photoconductor includes an electroconductive support and a photoconductive layer formed thereon containing a diamine compound represented by formula (I): ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 each is independently a substituted or unsubstituted alkyl group or aryl group; R.sup.4 is hydrogen, an alkyl group or an alkoxyl group; n is an integer of 1 to 3; and ##STR2## is a substituted or unsubstituted bivalent arylene group or a bivalent heterocyclic group. This diamine compound is useful as a photoconductive material for electrophotographic photoconductors.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: May 20, 1997
    Assignees: Ricoh Company, Ltd., Hodogaya Chemical Co., Ltd.
    Inventors: Mitsutoshi Anzai, Yasuo Murakami, Atsushi Takesue, Masaomi Sasaki, Tomoyuki Shimada, Tamotsu Aruga, Masafumi Ohta
  • Patent number: 5616810
    Abstract: The present invention is directed to a process for the preparation of deactivated anilines, which comprises the step of reacting a compound of formula ( I ) ##STR1## with a dialkylamide in the presence of a base at elevated temperature, in which:R.sub.1 is chosen from groups whose anions (R.sub.1.sup.-) constitute leaving groups;R.sub.2 and R.sub.4, which may be the same or different, are chosen from hydrogen, hydrocarbon chains, halogens and groups which are electron-attracting (EAG);R.sub.3 is chosen from hydrocarbon chains, halogens and groups which are electron-attracting, preferably through an inductive effect rather than a mesomeric effect;with the proviso that at least one of the groups R.sub.2, R.sub.3, and R.sub.4 is electron-attracting through an inductive effect.A second embodiment of the present invention is directed to a process for the dealkylation of deactivated anilines which comprises the steps of free radical halogenation of the benzyl carbon followed by hydrogenation.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: April 1, 1997
    Assignee: Rhone-Poulenc Chimie
    Inventor: Jean-Marc Ricca
  • Patent number: 5596020
    Abstract: This invention relates to a class of novel amino bi- and tri-carbocyclic alkane compounds having bis-aryl substitution which exhibit squalene synthase inhibition properties. The bi- and tri-carbocyclic alkane ring contains an amino group and the ring is further linked or bridged to two mono- and/or bicyclic rings. Compounds of this invention reduce levels of serum cholesterol in the body without significantly reducing mevalonic metabolite synthesis. This invention relates also to pharmacological compositions and method of treatment for lowering serum cholesterol levels using the compounds of this invention.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: January 21, 1997
    Assignee: Rhone-Poulenc Rorer Pharmaceuticals Inc.
    Inventors: Robert L. Morris, Kent W. Neuenschwander, Keith S. Learn, Anthony C. Scotese
  • Patent number: 5574173
    Abstract: Disclosed are compounds of Formula I: ##STR1## or a pharmaceutically acceptable salt or solvate thereof, wherein: R.sup.4 is alkenyl, alkoxy, or --OH.Also disclosed are pharmaceutical compositions containing compounds of Formula I, methods for inhibiting tumor necrosis factor-.alpha., and methods for treating septic shock, inflammation, or allergic disease.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: November 12, 1996
    Assignee: Schering Corporation
    Inventors: Pauline C. Ting, Richard J. Friary, Wing C. Tom, Joe F. Lee, Vera A. Seidl
  • Patent number: 5550293
    Abstract: An electrophotographic photoconductor comprising an electroconductive support, and a photoconductive layer formed thereon comprising at least one tertiary amine compound having a condensed polycyclic hydrocarbon group of formula (I): ##STR1## wherein A.sup.1 and A.sup.2 each independently represent an unsubstituted or substituted alkyl group or aryl group, and Ar represents an unsubstituted or substituted condensed polycyclic hydrocarbon group. Furthermore, novel tertiary amine compounds having a condensed polycyclic hydrocarbon group are disclosed.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: August 27, 1996
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Masaomi Sasaki, Tamotsu Aruga
  • Patent number: 5538986
    Abstract: Disclosed are compounds of Formula I: ##STR1## or a pharmaceutically acceptable salt or solvate thereof, wherein: R.sup.3 is alkyl, alkenyl, alkynyl, aryl, alkaryl, aralkyl, cycloalkyl, acyloxymethyl, alkoxy, alkoxymethyl, or alkyl substituted with cycloalkyl;R.sup.4 is H, alkyl, alkenyl, alkoxy, or --OH.Also disclosed are pharmaceutical compositions containing compounds of Formula I, methods for inhibiting tumor necrosis factor-.alpha. and methods for treating septic shock, inflammation, or allergic disease by administering a compound of Formula I.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: July 23, 1996
    Assignee: Schering Corporation
    Inventors: Pauline C. Ting, Daniel M. Solomon, Richard J. Friary, Frank J. Villani, John J. Piwinski, Joe F. Lee, Dhiru B. Vashi
  • Patent number: 5442122
    Abstract: The present invention is directed to a compound represented by the following formula (I), ##STR1## and a linker for peptide synthesis using the above compound. When the linker of the present invention is used for the solid-phase peptide synthesis, it is possible to synthesize those peptides which are sensitive to acid and difficult to synthesize by conventional methods. Also, side reactions can be prevented, and the desired product is produced at a high purity because cleavage can be achieved under milder conditions or in shorter times. In other words, efficient peptide synthesis is possible.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: August 15, 1995
    Assignee: Shimadzu Corporation
    Inventors: Masaki Noda, Kiyoshi Nokihara
  • Patent number: 5401882
    Abstract: The present invention is directed to a process for the preparation of deactivated anilines, which comprises the step of reacting a compound of formula (I) ##STR1## with a dialkylamide in the presence of a base at elevated temperature, in which:R.sub.1 is chosen from groups whose anions (R.sub.1.sup.-) constitute leaving groups;R.sub.2 and R.sub.4, which may be the same or different, are chosen from hydrogen, hydrocarbon chains, halogens and groups which are electron-attracting (EAG);R.sub.3 is chosen from hydrocarbon chains, halogens and groups which are electron-attracting, preferably through an inductive effect rather than a mesomeric effect; with the proviso that at least one of the groups R.sub.2, R.sub.3, and R.sub.4 is electron-attracting through an inductive effect.A second embodiment of the present invention is directed to a process for the dealkylation of deactivated anilines which comprises the steps of free radical halogenation of the benzyl carbon followed by hydrogenation.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: March 28, 1995
    Assignee: Rhone-Poulenc Chimie
    Inventor: Jean-Marc Ricca
  • Patent number: 5382692
    Abstract: An electrophotographic photoconductor comprising an electroconductive support, and a photoconductive layer formed thereon comprising at least one tertiary amine compound having a condensed polycyclic hydrocarbon group of formula (I): ##STR1## wherein A.sup.1 and A.sup.2 each independently represent an unsubstituted or substituted alkyl group or aryl group, and Ar represents an unsubstituted or substituted condensed polycyclic hydrocarbon group. Furthermore, novel tertiary amine compounds having a condensed polycyclic hydrocarbon group are disclosed.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: January 17, 1995
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Masaomi Sasaki, Tamotsu Aruga
  • Patent number: 5356935
    Abstract: A series of dihydrophenanthreneones and tetrahydrophenanthreneones are useful as inhibitors of 5.alpha.-reductase, and a series of hexahydrophenanthreneones are useful as intermediates for preparing such pharmaceuticals.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: October 18, 1994
    Assignee: Eli Lilly and Company
    Inventors: James E. Audia, Thomas C. Britton, Patrick G. Spinazze
  • Patent number: 5334752
    Abstract: Novel difunctionalized cyclobutabenzene monomers of the general formula: ##STR1## wherein Z can be hydrogens or a cyclobutane ting; and X and Y are carbox amino, alcohol, isocyanate, acid halide, or bis-acyl fluoride groups. In a particularly preferred embodiment, the cyclobutabenzene derivative is 1,2-dihydrocyclobutabenzene-3,6-carboxylic acid. The difunctionalized cyclobutabenzene monomer can form part of a polymer backbone chain, but has an additional functionality, the butane ring, which can be easily opened to produce strong, covalent bond crosslinking between polymer chains. The crosslinking can be induced simply by heating the polymer to a temperature in excess of 300.degree. C.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: August 2, 1994
    Assignee: The Board of Regents acting for and on behalf of University of Michigan
    Inventors: David C. Martin, Jeffrey S. Moore, Larry J. Markoski, Kenneth A. Walker
  • Patent number: 5326786
    Abstract: Compounds represented by the formula ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or a protective group for a hydroxyl group, or R.sub.1 and R.sub.2 combine to represent a protective group for hydroxyl groups, andR.sub.3 represents CH.sub.3 O-- or CH.sub.3 NH--.These compounds exhibit a strong effect to inhibit proliferation of cancer cells and are expected to be used as a carcinostatic agent.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: July 5, 1994
    Assignee: Ohgen Research Laboratories Ltd.
    Inventor: Kiyoshi Akiyama
  • Patent number: 5216178
    Abstract: Novel aminoalkylthiodibenzoxepins, physiologically tolerable acid addition salts thereof, a method of preparing same, pharmaceutical and veterinary preparations including same and methods of treating by administering same are disclosed. These compounds are useful as analgesic, antidepressant and anticonvulsant agents. A process for selectively reducing olefins by alkaline earth metals in loweralkanols is also disclosed.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: June 1, 1993
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Helen H. Ong, Vernon B. Anderson, James A. Profitt
  • Patent number: 5202486
    Abstract: Tetrahydronaphthaleneamine derivatives having the formula ##STR1## wherein R, R', R.sub.1 and R.sub.2 are as defined herein, are novel calcium channel blockers.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: April 13, 1993
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Joel C. Barrish, Steven H. Spergel
  • Patent number: 5189065
    Abstract: The use of products of formula (I) is described, wherein X and Y represent hydrogen, hydroxy or alkoxy; and R.sub.1 and R.sub.2 represent H, alkyl, alkenyl or alkynyl, arylalkyl, acyl or R.sub.1 and R.sub.2 together with nitrogen form a heterocycle for preparing an antitumoral drug.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: February 23, 1993
    Assignee: Roussel Uclaf
    Inventors: Jorg Czech, Hans H. Sedlacek, Lucien Nedelec, Jacques Guillaume, Christian Marchandeau
  • Patent number: 5171915
    Abstract: It is disclosed that aromatic compounds can be alkylated with mono-olefinic HVI-PAO dimer in contact with an acidic catalyst to produce novel alkylated aromatic compositions. It has been found that the novel HVI-PAO dimer alkylated aromatic compositions exhibit an extraordinary combination of properties relating to low viscosity with high viscosity index and low pour point which renders them very useful as lubricant basestock. Further, it has been found that the novel alkylaromatic compositions of the present invention show improved oxidative stability. Depending upon the substituent groups on the aromatic nucleus, useful lubricant additives can be prepared for improved antiwear, antioxidant and other properties. HVI-PAO dimer is prepared as a product or by-product from 1-alkene oligomerization using reduced chromium oxide on solid support.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: December 15, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Thomas R. Forbus, Bruce P. Pelrine
  • Patent number: 5166438
    Abstract: A charge transporting material comprising a 1,3-pentadiene derivative having formula (I):A--CH.dbd.CH--CH.dbd.CH--CH.sub.2 --A (I)wherein A represents a 9-anthryl group which may have a substituent, a N-substituted carbazolyl group which may have a substituent, a N-substituted phenothiazinyl group which may have a substituent or ##STR1## in which Ar represents an arylene group which may have a substituent, R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, an aralkyl group which may have a substituent, or an aryl group which may have a substituent; an electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon, which comprises as an effective component at least one of the 1,3-pentadiene derivatives of the above formula (I); and novel 1,3-pentadiene derivatives of the formula (I), provided that in the formula (I), R.sup.1 and R.sup.2 cannot be a methyl group at the same time, are disclosed.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: November 24, 1992
    Assignees: Ricoh Company, Ltd., Hodogaya Chemical Co., Ltd.
    Inventors: Mitsuru Hashimoto, Masaomi Sasaki, Tomoyuki Shimada, Nobuo Suzuki, Takayuki Sakai, Susumu Suzuka
  • Patent number: 5159087
    Abstract: Aromatic diolefinic compounds including 1,4-divinylbenzene derivatives, which are useful not only as organic photoconductive materials for electrophotography, but also as intermediates for producing diethyl aromatic compounds which are also useful as organic photoconductive materials for electrophotography, the aromatic diethyl compounds, an electrophotographic photoconductor containing any of the above aromatic diethyl compounds in a photosensitive layer thereof, and a charge transporting medium containing any of the aromatic diethyl compound are disclosed.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: October 27, 1992
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Masaomi Sasaki, Mitsuru Hashimoto
  • Patent number: 5153227
    Abstract: The invention concerns novel pharmaceutical compositions for use in the treatment of certain complications of diabetes and galactosemia and which contain a nitromethane derivative (or its non-toxic salt) as active ingredient. The nitromethane derivatives are inhibitors of the enzyme aldose reductase. Many of the inhibitors are novel and are provided, together with processes for their manufacture and use, as further features of the invention.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: October 6, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Steven P. Brown, Anthony L. Cooper, Jethro L. Longridge, Jeffrey J. Morris, John Preston
  • Patent number: 5081304
    Abstract: A series of isotopically-labeled fluorenamine, dibenzofuranamine, and dibenzothiophenamine derivatives useful for diagnosing neurodegenerative disorders in mammals wherein a detectable amount of an isotope-labeled fluorenamine, dibenzofuranamine, or dibenzothiophenamine derivative is used.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: January 14, 1992
    Assignee: Warner-Lambert Company
    Inventor: Walter H. Moos
  • Patent number: 5055414
    Abstract: Certain phenalenimine fluorescent compounds represented by the structure ##STR1## wherein R' and R" are independently hydrogen, alkyl, cycloalkyl, aryl or a heterocycle, or R' comprises the carbon and heteroatoms which forms a fused ring with the compound nucleus, are useful in biomedical and analytical determinations. These compounds can be used for staining cells, as well as for the determination of various analytes found in human or animal biological fluids. Such determination can be carried out in solution or by using dry analytical elements. The fluorescent compounds can be reacted with quinone nuclei to form reducible compounds which are also useful in analytical methods. In addition, the compounds can be incorporated into what are known as "loadable" latex particles to form detectable labels and biological reagents.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: October 8, 1991
    Assignee: Eastman Kodak Company
    Inventors: Bruce E. Babb, Fred T. Oakes
  • Patent number: 5041673
    Abstract: This invention relates to novel derivatives of tetralin, to the processes for their preparation, to their use as aminopeptidase inhibitors and to their end-use application as immunomodulators and as analgesic agents.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: August 20, 1991
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Hugues d'Orchymont, Celine Tarnus
  • Patent number: 5017724
    Abstract: Novel hydrofluorene derivatives and salts thereof represented by the formula (1) which possess excellent activities for improving anoxemic and hypoxic symptoms and syndromes accompanied therewith, therefore said derivatives are useful as cerebral activators, preventive agents for arrhythmia and heart failure caused by the shortage of oxygen and others. Furthermore, said hydrofluorene derivatives and salts thereof possess actions for scavenging active oxygen radicals, therefore, the derivatives are useful prophylactic and treating agents for various disturbances and diseases caused by the excessive formation of active oxygen radicals. In addition to the above, the hydrofluorene derivatives are useful as anti-oxidative agents for fats and oils.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: May 21, 1991
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yasuo Oshiro, Tatsuyoshi Tanaka, Yoji Sakurai, Seiji Sato
  • Patent number: 5015770
    Abstract: (Hydrocarbylthio)aromatic amines are prepared by reacting an aromatic amine, such as an aminobenzene, with a hydrocarbyl disulfide, such as an alkyl disulfide, in the presence of iodine, iodine monochloride, or iodine monobromide as a catalyst.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: May 14, 1991
    Assignee: Ethyl Corporation
    Inventor: Gordon G. Knapp
  • Patent number: 5011939
    Abstract: A hydroxy arylamine compound is disclosed represented by the formula: ##STR1## wherein: m is 0 or 1,Z is selected from the group consisting of: ##STR2## n is 0 or 1, Ar is selected from the group consisting of: ##STR3## R is selected from the group consisting of --CH.sub.3, --CH.sub.2 H.sub.5, --C.sub.3 H.sub.7, and --C.sub.4 H.sub.9,Ar' is selected from the group consisting of: ##STR4## X is selected from the group consisting of: ##STR5## s is 0, 1 or 2, the dihydroxy arylamine compound being free of any direct conjugation between the --OH groups and the nearest nitrogen atom through one or more aromatic rings. The dihydroxy arylamine compound may be employed in an electrophotographic imaging member and the member may be used in an electrophotographic imaging process.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: April 30, 1991
    Assignee: Xerox Corporation
    Inventors: William W. Limburg, John F. Yanus, Dale S. Renfer, Richard L. Schank, Beng S. Ong
  • Patent number: 4999441
    Abstract: Tetrakis(dialkylamino)aromatics Ia to Ic ##STR1## where the radicals A may be identical or different and are n-C.sub.1 -C.sub.6 -alkyl and the radicals R may be identical or different and are hydrogen or C.sub.1 -C.sub.6 -alkyl, and their charge transfer complexes with electron acceptors, and the preparation of Ia to Ic from the corresponding N-unsubstituted amines by alkylation with A'--CHO (where A'.dbd.H or N-C.sub.1 -C.sub.5 -alkyl) and reduction with NaBH.sub.3 CN.The charge transfer complexes of Ia and Ic are used to prepare electrically conductive polymers.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: March 12, 1991
    Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.
    Inventors: Heinz A. Staab, Karin Elbl
  • Patent number: 4904688
    Abstract: The present invention deals with dibenzo-oxocin-, dibenzo-thiocin-, dibenzo-azocin- and dibenzocyclo-octenamine derivatives suitable for use as antipsychotic compounds without extra-pyrimidal side-effects.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: February 27, 1990
    Assignee: Akzo N.V.
    Inventors: Duncan R. Rae, James Cairns