Patents Examined by Hong Liu
  • Patent number: 6348471
    Abstract: The invention relates to novel pyrimidyloxyphenylacetic acid derivatives, to a plurality of processes for their preparation and to their use to fungicides, and also to novel intermediates and to a process for their preparation.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: February 19, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Heinemann, Herbert Gayer, Peter Gerdes, Ralf Tiemann, Astrid Mauler-Machnik, Stefan Dutzmann, Klaus Stenzel
  • Patent number: 6346527
    Abstract: A compound of the formula: wherein R1 is hydrogen or halogen, R2 is hydroxy, acyl(lower)alkoxy, hydroxy(lower)alkyl, lower alkoxy(lower)alkyl, lower alkylthio(lower)alkyl, mono(or di or tri)halo(lower)alkyl, (ethoxycarbonyl)amino, sulfamoylamino, (dimethylsulfamoyl)amino, N,N-di(lower)alkylamino(lower)alkyl, hydroxyimino(lower)alkyl, lower alkoxyimino(lower)alkyl, acyl, lower alkoxycarbonyl, carbamoyl, di(lower)alkylcarbamoyl, (amino(lower)alkyl)carbamoyl, N,N-di(lower)alkylamino(lower)alkylcarbamoyl, guanidinocarbonyl, morpholinylsulfonyl, sulfamoyl, lower alkylsulfamoyl, (lower alkylsulfonyl)(lower)alkyl, guanidinocarbonyl(lower)alkenyl, lower alkylthio, cyano, acyl(lower)alkyl, acyl(lower)alkenyl, aryl which has one or more substituent(s) or a heterocyclic group which has one or more substituent(s), and X is —O—, or a salt thereof.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: February 12, 2002
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kohei Takenaka, Yoshikazu Inoue, Masatoshi Minagawa, Atsushi Akahane
  • Patent number: 6342502
    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: October 23, 2000
    Date of Patent: January 29, 2002
    Assignee: AstraZeneca AB
    Inventors: David Cheshire, Andrew Cooke, Martin Cooper, David Donald, Mark Furber, Matthew Perry, Philip Thorne
  • Patent number: 6340681
    Abstract: A compound of the formula: or a pharmaceutically acceptable salt thereof, wherein R1 and R2 are independently selected from hydrogen, halo, hydroxy, (C1-C4)alkyl, halo (C1-C4)alkyl and the like; R3 and R4 are independently selected from hydrogen, halo(C1-C10)alkyl, optionally substituted (C1-C6)alkyl and the like, or R3 and R4, together with the nitrogen atom to which they are attached, form an optionally substituted fully saturated, partially saturated or fully unsaturated heterocyclic ring; and R5 is (C4-C11)cycloalkyl and the like, has ORL1-receptor agonist activity, and are useful as analgesics or the like in mammalian subjects.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: January 22, 2002
    Assignee: Pfizer Inc
    Inventor: Fumitaka Ito
  • Patent number: 6335344
    Abstract: The present invention relates to compounds of the formula (I) and to pharmaceutically acceptable salts thereof, wherein R1-R4 and Z are as defined herein. The compounds of formula (I) are useful as antiproliferative agents. The invention further relates to pharmaceutical compositions and methods of treating hyperproliferative disorders such as cancer, using such compounds.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: January 1, 2002
    Assignee: Pfizer Inc.
    Inventor: Rodney C. Schnur
  • Patent number: 6335341
    Abstract: This invention concerns heterocyclic derivatives which are useful in inhibiting oxido-squalene cyclase, processes for their preparation and pharmaceutical compositions containing them. The present invention is also concerned with heterocyclic derivatives capable of inhibiting cholesterol biosynthesis and hence in lowering cholesterol levels in blood plasma. The present invention also relates to methods of using such heterocyclic derivatives in treating or preventing diseases and medical conditions such as hypercholesterolemia, atherosclerosis and other medical conditions associated with elevated cholesterol levels.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: January 1, 2002
    Assignee: Zeneca Limited
    Inventors: Michael Clyde Johnson, Nicholas John Newcombe
  • Patent number: 6333330
    Abstract: There is provided compounds of formula IA and of formula IB, wherein R1, R2, R3, R4 and A have meanings given in the description, which are useful in the curative and prophylactic treatment of medical conditions for which inhibition of a cyclic guanosine 3′,5′-monophosphate phosphodiesterase (e.g. cGMP PDE5) is desired.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: December 25, 2001
    Assignee: Pfizer Inc.
    Inventors: Mark Edward Bunnage, John Paul Mathias, Graham Nigel Maw, David James Rawson, Stephen Derek Albert Street, Anthony Wood
  • Patent number: 6333324
    Abstract: A compound of formula (I) wherein A is a sulfonyl or a carbonyl; R1 is an optionally substituted aryl, an optionally substituted heterocyclic group, an optionally substituted lower alkyl or an optionally substituted lower alkenyl; R2 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R3 is an optionally substituted lower alkyl, an optionally substituted lower alkoxy, an optionally substituted aryloxy, an optionally substitued lower alkenyl, an optionally substituted aryl, an optionally substituted heterocyclic group or an optionally substitued amino; R4 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R5 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; and R10 is a hydroxy or a protected hydroxy, and a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: December 25, 2001
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masahiro Neya, Hitoshi Yamazaki, Natsuko Kayakiri, Kentaro Sato, Teruo Oku
  • Patent number: 6331541
    Abstract: The present application describes modulators of CCR3 of formula (I): or pharmaceutically acceptable salt forms thereof, useful for the prevention of asthma and other allergic diseases.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 18, 2001
    Inventors: Soo S. Ko, George V. DeLucca, John V. Duncia, Joseph B. Santella, III, Daniel S. Gardner
  • Patent number: 6331538
    Abstract: The invention is a series of 7-substituted quinazolin-2,4-diones useful as antibacterial agents, processes for the preparation of the compounds, and a pharmaceutical composition containing one or more of the compounds.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: December 18, 2001
    Assignee: Warner-Lambert Company
    Inventors: John Michael Domagala, Edmund Lee Ellsworth, Liren Huang, Thomas Eric Renau, Rajeshwar Singh, Michael Andrew Stier
  • Patent number: 6331631
    Abstract: A process for the preparation of 1-butyl-4-piperidinylmethylamine using toluene as a solvent is disclosed.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: December 18, 2001
    Assignee: SmithKline Corporation p.l.c.
    Inventors: Michael Fedouloff, David William Guest, Gillian Elizabeth Smith
  • Patent number: 6329378
    Abstract: Disclosed are pharmaceutical compositions comprising aryl and heteroaryl hydrazone, hydrazine and thiosemicarbazone derivatives of formulae I and II, and methods for using the compositions as antifungal agents. The invention also relates to novel aryl and heteroaryl hydrazone, hydrazine and thiosemicarbazone derivatives of formulae I and II, their preparation, to pharmaceutical compositions containing them, and to methods of using them to alleviate fungal infections.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: December 11, 2001
    Assignee: Anadys Pharmaceuticals, Inc.
    Inventors: Xiaodan Mei, Peng Wang, Andrei Caracoti, Pamela Mingo, Vincent Boyd, Robert Murray, Nicholas J. Sisti, Yi Bin Xiang, Shuhao Zhu, C. Richard Wobbe, Daniel Moore
  • Patent number: 6326327
    Abstract: 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: October 30, 2000
    Date of Patent: December 4, 2001
    Assignee: Degussa AG
    Inventors: Carsten Bolm, Arne Gerlach, Karlheinz Drauz, Andreas Bommarius
  • Patent number: 6323208
    Abstract: The present invention relates to novel atropisomers of 2,3-disubstituted-(5,6)-heteroarylfused-pyrimidin-4-ones, pharmaceutical compositions containing such compounds the use of such compounds to treat neurodegenerative, psychotropic, and drug and alcohol induced central and peripheral nervous system disorders.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: November 27, 2001
    Assignee: Pfizer Inc
    Inventors: Bertrand L. Chenard, Willard M. Welch, Jr.
  • Patent number: 6316438
    Abstract: Compounds of the formula are useful as inhibitors of cGMP PDE especially Type 5.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: November 13, 2001
    Assignee: Bristol-Myers Squibb Co.
    Inventors: Guixue Yu, John Macor, Soojin Kim, Hyei-Jha Chung, Michael Humora, Kishta Katipally, Yizhe Wang
  • Patent number: 6313129
    Abstract: The invention provides novel JAK-3 inhibitors that are useful for treating leukemia and lymphoma. The compounds are also useful to treat or prevent skin cancer, as well as sunburn and UVB-induced skin inflammation. In addition, the compounds of the present invention prevent the immunosuppressive effects of UVB radiation, and are useful to treat or prevent autoimmune diseases, inflammation, and transplant rejection. The invention also provides pharmaceutical compositions comprising compounds of the invention, as well as therapeutic methods for their use.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: November 6, 2001
    Assignee: Hughes Institute
    Inventors: Fatih M. Uckun, Elise A. Sudbeck, Marina Cetkovic, Ravi Malaviya, Xing-Ping Liu
  • Patent number: 6313118
    Abstract: The present invention relates to new piperidyl- or piperazinyl-substituted-1,2,3,4-tetrahydronaphthalene derivatives having the formula I wherein X is N or CH; Y is NR2CH2, CH2—NR2, NR2—CO, CO—NR2 or NR2SO2 wherein R2 is H or C1-C6 alkyl; R1 is H, C1-C6 alkyl or C3-C6 cycloalkyl; R3 is C1-C6 alkyl, C3-C6 cycloalkyl or (CH2)n-aryl, wherein aryl is phenyl or a heteroaromatic ring containing one or two heteroatoms selected from N, O and S and which may be mono- or di-substituted n is 0-4; R9 is C1-C6 alkyl, C3-C6 cycloalkyl, OCF3, OCHF2, OCH2F, halogen, CN, CF3, OH, C1-C6 alkoxy, C1-C6 alkoxy-C1-C6 alkyl, NR6R7, SO3CH3, SO3CF3, SO2NR6R7, an unsubstituted or substituted heterocyclic or heteroaromatic ring containing one or two heteroatoms selected from N and O, wherein the substituent(s) is(are) C1-C6 alkyl; or COR8; wherein R6, R7 and R8 are as defined above, as (R)-enantiomers, (S)-enantiomers or racemates in the form of a free base or pharmaceutically acceptable sal
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: November 6, 2001
    Assignee: Astra Aktiebolag
    Inventors: Stefan Berg, Mats Linderberg, Svante Ross, Seth-Olov Thorberg, Bengt Ulff
  • Patent number: 6313293
    Abstract: The present invention relates to a process for the preparation of amides, comprising reacting amines with carboxylic acids in the presence of silicon amines. The present invention further relates to a process for the preparation of quinazoline derivatives, comprising reacting amines with carboxylic acids in the presence of silicon amines to obtain amides and contacting the resultant amides with quinazoline.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: November 6, 2001
    Assignee: Development Center for Biotechnology
    Inventors: Wen-Chih Chou, Ming-Chen Chou, Yann-Yu Lu, Shyh-Fong Chen
  • Patent number: 6306853
    Abstract: A 1,4-dihydropyridine derivative having the formula (I): wherein, R1 represents a substituted or unsubstituted phenyl or pyridyl group, R2 represents a C1 to C5 lower alkyl group, R3 represents a substituted or unsubstituted C1 to C8 alkyl, alkenyl, alkynyl or substituted or unsubstituted C3 to C7 cycloalkyl or cycloalkenyl group, R4 represents —A—R5, wherein A represents a C3 to C5 alkynylene group having one triple bond, and R5 represents a substituted or unsubstituted pyridyl, quinolyl, isoquinolyl or pyrimidyl group and a drug for overcoming resistance to an anti-cancer drug or a drug increasing the effect of an anti-cancer drug containing as an effective ingredient the derivative or its pharmacologically acceptable salt or hydrate.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: October 23, 2001
    Assignee: Nikken Chemicals Co., Ltd.
    Inventors: Shigeyuki Tasaka, Akira Kiue, Hiromasa Omori, Hirokazu Tanabe, Noriaki Gomi
  • Patent number: 6306861
    Abstract: The invention is directed to compounds of Formula I: wherein R is an aryl, cycloalkyl or polyhaloalkyl group, R1 is chosen from the group consisting of alkyl, alkoxy, polyfluoroalkoxy, hydroxy and trifluoromethanesulfonyloxy; each of R2 and R3 independently is chosen from the group consisting of a hydrogen, halogen, alkoxy and polyfluoroalkoxy group, and n is 0, 1 or 2. The invention further provides pharmaceutical compositions comprising a compound of Formula I or a N-oxide or pharmaceutically acceptable salt of such a compound in admixture with a pharmaceutically acceptable diluent or carrier. In another aspect, the present invention is directed to methods for selectively preventing contractions of the urethra and lower urinary tract, without substantially affecting blood pressure, by administering one or more selected compounds of Formula I to a mammal (including a human) in need of such treatment in an amount or amounts effective for the particular use.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: October 23, 2001
    Assignee: Recordati S.A. Chemical and Pharmaceutical Company
    Inventors: Amedeo Leonardi, Gianni Motta, Carlo Riva, Rodolfo Testa