Patents Examined by Hong Liu
  • Patent number: 6197809
    Abstract: It is shown that the potency of anti-cancer drugs, here exemplified by doxorubicin, can be increased by the use of polyunsaturated fatty acid amides and in particular specific combinations of such compounds, forming complexes with doxorubicin. Further, a modified form of doxorubicin is presented.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: March 6, 2001
    Assignee: Ardenia Investments Ltd.
    Inventor: Oleg Strelchenok
  • Patent number: 6197779
    Abstract: This invention concerns the use of the compounds of formula the N-oxides, the pharmaceutically acceptable addition salts and the stereochemically isomeric forms thereof, wherein A is CH, CR4 or N; n is 0 to 4; Q is hydrogen or —NR1R2; R1 and R2 are selected from hydrogen, hydroxy, C1-12alkyl, C1-12alkyloxy, C1-12alkylcarbonyl, C1-12alkyloxycarbonyl, aryl, amino, mono- or di(C1-12alkyl)amino, mono- or di(C1-12alkyl)aminocarbonyl wherein each C1-12alkyl may optionally be substituted; or R1 and R2 taken together may form pyrrolidinyl, piperidinyl, morpholinyl, azido or mono- or di(C1-12alkyl)aminoC1-4alkylidene; R3 is hydrogen, aryl, C1-6alkylcarbonyl, optionally substituted C1-6alkyl, C1-6alkyloxycarbonyl,; and R4 is hydroxy, halo, optionally substituted C1-6alkyl, C1-6alkyloxy, cyano, aminocarbonyl, nitro, amino, trihalomethyl, trihalomethyloxy; R5 is hydrogen or C1-4alkyl; L is optionally substituted C1-10alkyl, C3-10alkenyl, C3-10alkynyl, C3-7cycloalkyl; or L is —X1—R6 or
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: March 6, 2001
    Assignee: Janssen Pharmaceutica, Inc.
    Inventors: Koenraad Jozef Lodewijk Marcel Andries, Bart De Corte, Marc René De Jonge, Jan Heeres, Chih Yung Ho, Marcel August Constant Janssen, Paul Adriaan Jan Janssen, Lucien Maria Henricus Koymans, Michael Joseph Kukla, Donald William Ludovici, Koen Jeanne Alfons Van Aken
  • Patent number: 6197774
    Abstract: The present invention provides a novel pyrimidine derivative represented by the general formula (1): (wherein R, R4 and R8 are the same as defined in the specification) or pharmaceutically acceptable salt thereof, which possesses an excellent activity for inhibiting the formation of NO (nitrogen oxide) in vivo.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: March 6, 2001
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Satoshi Yamada, Naosumi Kinoshita, Koichi Yasumura, Kouji Edamatsu, Takao Nagahama, Shintaro Ishikawa, Takeshi Yamauchi, Kazumasa Kishi, Kazuhisa Sugiyama
  • Patent number: 6187923
    Abstract: The present invention provides a process for synthesizing a compound or a library of compounds of Formula 1A and 1B:
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: February 13, 2001
    Assignee: Axys Advanced Technologies, Inc.
    Inventors: Jeffrey Mark Dener, Cuong Quoc Ly
  • Patent number: 6183732
    Abstract: A composition for use in a topical skin formulation such as a shower gel or a bath gel or a cream or lotion, comprises polyalcohol humectant, a mixture of at least two polyquaternary compounds, one of which is a cationic copolymer and one of which is an amphoteric copolymer, the copolymers being present in a weight ratio of cationic copolymer to amphoteric copolymer of 1:1.75 to 1:6, wherein the weight ratio of polyalcohol humectant to the said mixture lies in the range 1:0.06 to 1:0.1. When employed in a topical skin formulation the present combination of humectants provides an improved moisturizing effect.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: February 6, 2001
    Assignee: Johnson & Johnson Consumer Companies
    Inventor: Michael Salmon
  • Patent number: 6184183
    Abstract: Novel heterocyclyluracils of the formula in which R1, R2 and Het are each as defined in the description, a process for preparing these substances and their use as herbicides.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: February 6, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Andree, Mark Wilhelm Drewes, Markus Dollinger
  • Patent number: 6180551
    Abstract: Process for the formation of MeO-Peg-protected dihydroquinine or dihydro quinindine derivatives, new dihydroquinine-or dihyroquinidine derivatives as well as the use thereof. It is known that dihydroquinine or dihydroquinidine derivatives can be successfully used as ligands in the enantioselective dihydroxylation. The new disclosed ligand systems based on dihydroquinine/quinidine, unlike the prior art ligands, can be recycled after enantioselective dihydroxylation by precipitating and filtering the reaction medium, and be reused in the reaction medium. Also disclosed are the ligand systems (I) and (IV), process for preparing the same and their use in the enantioselective dihydroxiation of double bonds.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: January 30, 2001
    Assignee: Degussa AG
    Inventors: Carsten Bolm, Arne Gerlach, Karlheinz Drauz, Andreas Bommarius
  • Patent number: 6180635
    Abstract: The invention provides pharmaceutically useful thieno[2,3-d]pyrimidinediones, processes for their production, pharmaceutical compositions containing them and methods of treatment involving their use.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: January 30, 2001
    Assignee: AstraZeneca UK Limited
    Inventors: David Cheshire, Andrew Cooke, Martin Cooper, David Donald, Mark Furber, Matthew Perry, Philip Thorne
  • Patent number: 6175009
    Abstract: The present invention relates generally to an asymmetric synthesis of 4,4-disubstituted-3,4-dihydro-2(1H)-quinazolinones, and intermediates thereof. The target compounds are useful for the treatment of human immunodeficiency virus (HIV) as an inhibitor of reverse transcriptase.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: January 16, 2001
    Assignee: Dupont Pharmaceuticals Company
    Inventors: Pasquale Nicholas Confalone, Nicholas Andrew Magnus, Louis Storace
  • Patent number: 6175019
    Abstract: 1,3-Dimethylimidazolium 4-carboxylate is prepared by reacting 1-methylimidazole with dimethyl carbonate optionally in the presence of a solvent in accordance with the following reaction scheme:
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: January 16, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Jakob Fischer, Wolfgang Siegel, Volker Bomm, Martin Fischer, Klaus Mundinger
  • Patent number: 6175010
    Abstract: Novel 3-amino-1-cyanophenyl-uracils of the formula in which R1 represents hydrogen or represents in each case optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkylalkyl, aryl, arylalkyl, heterocyclyl or heterocyclylalkyl, R2 represents hydrogen, cyano or halogen, R3 represents hydrogen, halogen or optionally substituted alkyl, R4 represents optionally substituted alkyl, a process for their preparation and their use as herbicides.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: January 16, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Andree, Mark Wilhelm Drewes, Markus Dollinger
  • Patent number: 6172228
    Abstract: A process for advantageously preparing a piperazinesulfonamide derivative represented by the general formula (III): wherein R1 is hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, hydroxyl group, trifluoromethyl group, nitro group or amino group; R2 is a phenyl group which may have as substituents on its phenyl ring 1 to 3 groups selected from the group consisting of an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, hydroxyl group, trifluoromethyl group, nitro group and amino group, 2-pyridyl group, 3-pyridyl group or 4-pyridyl group; each of R3 and R4 is independently hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, a hydroxyalkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 8 carbon atoms, or a phenyl group which may be substituted; and Y is an alkylene group having 1 to 12 carbon atoms, and
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: January 9, 2001
    Assignee: Azwell Inc.
    Inventors: Kenichi Kashima, Yasuhiko Sakamoto, Yoichiro Ohta, Kenji Kawanishi, Shigetaka Takemura, Yasuko Takemura
  • Patent number: 6169086
    Abstract: The present invention relates to cis- and trans-forms of pyrazole derivatives, salts thereof, or agents containing the same, and represented by the general formula (I): wherein G represents a nitrogen containing saturated heterocyclic structure represented by the following formula: These compounds exhibit anti-tumor activity on 5-FU-resistant tumors and effects on P glycoprotein expressing, multiple-drug resistant tumors. An example of a pyrazole derivative which demonstrates 50% inhibition of tumor cell growth is 3-[4-(3-chloro-5-fluorophenyl)-1 piperazinyl]-1-[1-(3-chloro-2-pyridyl)-5-methyl-4-pyrazolyl)-1-trans-propene hydrochloride. Synthesis of the compounds represented by formula (I) can be prepared by any one of various routes such as a Mannich reaction, a Wittig reaction, reductive amination or substitution by allylation.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: January 2, 2001
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Akio Ejima, Satoru Ohsuki, Hitoshi Ohki, Hiroyuki Naito
  • Patent number: 6169090
    Abstract: The compound, according to formula (i) wherein X and Y are independently CH, N or N-oxide, provided that X and Y do not both represent CH; Z is CO or CS; R1 is alkyl, optionally substituted with one or more halogens; and R2, R3, R4 and R5 are each various organic groups. Such compounds have therapeutic utility, via inhibition of phosphodiesterase IV.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: January 2, 2001
    Assignee: Darwin Discovery, Ltd.
    Inventors: Hazel Joan Dyke, Verity Margaret Sabin, Andrew Sharpe, Alan Findlay Haughan, Christopher Lowe, George Buckley, John Montana
  • Patent number: 6165942
    Abstract: A compound represented by the general formula (I) and a salt thereof: ##STR1## wherein: Rf represents a (C.sub.1 -C.sub.4)haloalkyl group; X.about.Y represents N.dbd.N or CH.dbd.N or the like; A represents a nitrogen atom or CH; Z represents an oxygen or sulfur atom; Rg represents a hydrogen or halogen atom and the like; R1, R2, R3, R4 and R5 are each independently represent a hydrogen or halogen atom or a nitro or cyano group or the like.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: December 26, 2000
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Jun Satow, Yoshihiro Kudo, Eitatsu Ikeda, Tsutomu Nawamaki, Chiaki Kawaguchi
  • Patent number: 6166208
    Abstract: This invention provides advantageous processes for preparing quinazolinones of Formula I ##STR1## wherein: R.sup.1 is C.sub.1 -C.sub.10 alkyl; C.sub.3 -C.sub.10 alkenyl; C.sub.3 -C.sub.10 cycloalkyl; C.sub.3 -C.sub.10 halocycloalkyl; C.sub.4 -C.sub.10 cycloalkylalkyl; C.sub.4 -C.sub.10 halocycloalkylalkyl; or C.sub.3 -C.sub.10 alkynyl;R.sup.2 is C.sub.1 -C.sub.10 alkyl; C.sub.3 -C.sub.10 alkenyl; C.sub.3 -C.sub.10 cycloalkyl; C.sub.3 -C.sub.10 halocycloalkyl; C.sub.4 -C.sub.10 cycloalkylalkyl; C.sub.4 -C.sub.10 halocycloalkylalkyl; C.sub.4 -C.sub.10 cycloalkyl; C.sub.4 -C.sub.10 halocycloalkyl; or C.sub.3 -C.sub.10 alkynyl; andR.sup.3 and R.sup.4 are each independently hydrogen or halogen; from compounds containing the moiety IIg ##STR2## This invention further provides certain compounds of Formula II, IIIa, or IVa ##STR3## where R.sup.7 is C.sub.2 -C.sub.6 alkyl.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: December 26, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: James Francis Bereznak, Eric Allen Marshall, Charlene Gross Sternberg, Jeffrey Arthur Sternberg, King-Mo Sun
  • Patent number: 6166022
    Abstract: Triazolo[4,5-d]pyrimidine compounds of the formula ##STR1## where R.sup.1 through R.sup.4 and X are as defined in the specification are provided, together with compositions containing them, a process for their preparation and methods of use. The compounds are useful in the treatment of platelet aggregation disorders and angina.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: December 26, 2000
    Assignee: AstraZeneca UK Limited
    Inventors: Roger Brown, Garry Pairaudeau
  • Patent number: 6162261
    Abstract: The invention relates to triphendioxazine compounds of the formula (I) ##STR1## where the rings marked with A comprise, independently of one another, rings which are fused linearly in positions 2,3 and 9,10 or angularly in positions 1,2 and 8,9 or 3,4 and 10,11 and have the radical members of the formula (i) --NR.sub.1 (CO).sub.m --NH--, (ii) --CR.sub.1 .dbd.CH--CO--NH--, (iii) --O--CH.sub.2 --CO--NH--, (iv) --CO--CH.dbd.CR.sub.1 --NH--, (v) --CO--NH--CO--NH--, (vi) --CO--NH--CR.sub.2 .dbd.N--, (vii) --CR.sub.2 .dbd.N--CO--NH--, (viii) --NR.sub.1 --(CO).sub.m --O--, (ix) --NH--CR.sub.1 .dbd.N--, (x) --NH--CO--CR.sub.1 .dbd.N--, (xi) --NH--CO--CHR.sub.1 --NH--, (xii) --NR.sub.3 --(CO).sub.m --NR.sub.4 --, (xiii) --NR.sub.5 --(CO).sub.m --NR.sub.6 --, (xiv) --NR.sub.4 --CO--O-- or (xv) --NR.sub.6 --CO--O--,m is 1 or 2,R.sub.1 is hydrogen, C.sub.1-4 alkyl or phenyl, preferably hydrogen, methyl or ethyl,R.sub.2 is hydrogen, C.sub.1-4 alkyl or phenyl, preferably hydrogen, methyl or ethyl,R.sub.3, R.sub.4, R.sub.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: December 19, 2000
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Peter Kempter, Bansi Lal Kaul
  • Patent number: 6159987
    Abstract: A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects ##STR1## A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent ##STR2##
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: December 12, 2000
    Assignee: Taiho Pharmaceuticals, Co.
    Inventors: Junji Yamamoto, Takashi Arima, Nobuo Kasahara, Masato Nanri, Kazuo Ogawa, Ichiro Yamawaki, Manabu Kaneda
  • Patent number: 6159982
    Abstract: The present invention concerns the compounds of formula ##STR1## the N-oxide forms, the pharmaceutically acceptable acid addition salts and stereochemically isomeric forms thereof, wherein Alk is C.sub.1-6 alkanediyl or C.sub.3-6 alkenediyl; R.sup.1 is hydrogen or C.sub.1-4 alkyl; R.sup.2 and R.sup.3 each independently are hydrogen, C.sub.1-6 alkyl or C.sub.3-7 cycloalkyl; or R.sup.2 and R.sup.3 may also be taken together with the nitrogen atom to which they are attached, thus forming a pyrrolidine, a piperidine or a perhydro azepine ring; R.sup.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: December 12, 2000
    Assignee: Janssen Pharmaceutica N. V.
    Inventors: Jean-Paul Rene Marie Andre Bosmans, Christopher John Love, Guy Rosalia Eugene Van Lommen