Patents by Inventor Chi-Dean Liang

Chi-Dean Liang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6506876
    Abstract: The present invention provides compounds of the formula Ar1—Q—Ar2—Y—R—Z and pharmaceutically acceptable salts thereof wherein Ar1 and Ar2 are optionally substituted aryl moieties, Z is an optionally substituted nitrogen-containing moiety which may be an acyclic, cyclic or bicyclic amine or an optionally substituted monocyclic or bicyclic nitrogen-containing heteroaromatic moiety; Q is a linking group capable of linking two aryl groups; R is an alkylene moiety; Y is a linking moiety capable of linking an aryl group to an alkylene moiety and wherein Z is bonded to R through a nitrogen atom. The compounds and pharmaceutical compositions of the present invention are useful in the treatment of inflammatory diseases which are mediated by LTB4 production, such as psoriasis, ulcerative colitis, IBD and asthma.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: January 14, 2003
    Assignee: G.D. Searle & Co.
    Inventors: Nizal Samuel Chandrakumar, Barbara Baosheng Chen, Michael Clare, Bipinchandra Nanubhai Desai, Stevan Wakefield Djuric, Stephen Hermann Docter, Alan Frank Gasiecki, Richard Arthur Haack, Chi-Dean Liang, Julie Marion Miyashiro, Thomas Dale Penning, Mark Andrew Russell, Stella Siu-tzyy Yu
  • Patent number: 6451852
    Abstract: A class of substituted phenylacetonitrile-alkylaminoalkyl-ortho-substituted aryl compounds having immunosuppressive properties is described. Compounds of this class would be useful in reducing recipient rejection of transplanted organs and for treatment of autoimmune or inflammatory diseases.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: September 17, 2002
    Assignee: G. D. Searle & Co.
    Inventors: Chi-Dean Liang, John P. McKearn, John M. Farah, Jr., Richard A. Mueller
  • Publication number: 20010016602
    Abstract: A class of substituted phenylacetonitrile-alkylaminoalkyl-ortho-substituted aryl compounds having immunosuppressive properties is described. Compounds of this class would be useful in reducing recipient rejection of transplanted organs and for treatment of autoimmune or inflammatory diseases.
    Type: Application
    Filed: January 22, 2001
    Publication date: August 23, 2001
    Applicant: G.D. Searle & Co.,
    Inventors: Chi-Dean Liang, John P. McKearn, John M. Farah, Richard A. Mueller
  • Patent number: 6162823
    Abstract: The present invention provides compounds having the of the formula I: ##STR1## and pharmaceutically acceptable salts and stereoisomers thereof that are useful in the treatment of inflammatory diseases which are mediated by LTB.sub.4 production, such as psoriasis, ulcerative colitis, IBD, and asthma.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: December 19, 2000
    Assignee: G.D. Searle & Co.
    Inventors: Thomas Dale Penning, Stella Siu-tzyy Yu, James Malecha, Chi-Dean Liang, Mark Andrew Russell
  • Patent number: 5723492
    Abstract: The present invention provides compounds of the formula Ar.sup.1 --Q--Ar.sup.2 --Y--R--Z and pharmaceutically acceptable salts thereof wherein Ar.sup.1 and Ar.sup.2 are optionally substituted aryl moieties, Z is an optionally substituted nitrogen-containing moiety which may be an acyclic, cyclic or bicyclic amine or an optionally substituted monocyclic or bicyclic nitrogen-containing heteroaromatic moiety; Q is a linking group capable of linking two aryl groups; R is an alkylene moiety; Y is a linking moiety capable of linking an aryl group to an alkylene moiety and wherein Z is bonded to R through a nitrogen atom. The compounds and pharmaceutical compositions of the present invention are useful in the treatment of inflammatory diseases which are mediated by LTB.sub.4 production, such as psoriasis, ulcerative colitis, IBD and asthma.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 3, 1998
    Assignee: G.D. Searle & Co.
    Inventors: Nizal Samuel Chandrakumar, Barbara Baosheng Chen, Michael Clare, Bipinchandra Nanubhai Desai, Stevan Wakefield Djuric, Stephen Hermann Docter, Alan Frank Gasiecki, Richard Arthur Haack, Chi-Dean Liang, Julie Marion Miyashiro, Thomas Dale Penning, Mark Andrew Russell, Stella Siu-tzyy Yu
  • Patent number: 5719306
    Abstract: The present invention provides compounds of the formula Ar.sup.1 --Q--Ar.sup.2 --Y--R--Z and pharmaceutically acceptable salts thereof wherein Ar.sup.1 and Ar.sup.2 are optionally substituted aryl moieties, Z is an optionally substituted nitrogen-containing moiety which may be an acyclic, cyclic or bicyclic amine or an optionally substituted monocyclic or bicyclic nitrogen-containing heteroaromatic moiety; Q is a linking group capable of linking two aryl groups; R is an alkylene moiety; Y is a linking moiety capable of linking an aryl group to an alkylene moiety and wherein Z is bonded to R through a nitrogen atom. The compounds and pharmaceutical compositions of the present invention are useful in the treatment of inflammatory diseases which are mediated by LTB.sub.4 production, such as psoriasis, ulcerative colitis, IBD and asthma.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 17, 1998
    Assignee: G.D. Searle & Co.
    Inventors: Nizal Samuel Chandrakumar, Barbara Baosheng Chen, Michael Clare, Bipinchandra Nanubhai Desai, Stevan Wakefield Djuric, Stephen Hermann Docter, Alan Frank Gasiecki, Richard Arthur Haack, Chi-Dean Liang, Julie Marion Miyashiro, Thomas Dale Penning, Mark Andrew Russell, Stella Siu-tzyy Yu
  • Patent number: 5585492
    Abstract: The present invention provides compounds of the formula Ar.sup.1 --Q--Ar.sup.2 --Y--R--Z and pharmaceutically acceptable salts thereof wherein Ar.sup.1 and Ar.sup.2 are optionally substituted aryl moieties, Z is an optionally substituted nitrogen-containing moiety which may be an acyclic, cyclic or bicyclic amine or an optionally substituted monocyclic or bicyclic nitrogen-containing heteroaromatic moiety; Q is a linking group capable of linking two aryl groups; R is an alkylene moiety; Y is a linking moiety capable of linking an aryl group to an alkylene moiety and wherein Z is bonded to R through a nitrogen atom. The compounds and pharmaceutical compositions of the present invention are useful in the treatment of inflammatory diseases which are mediated by LTB.sub.4 production, such as psoriasis, ulcerative colitis, IBD and asthma.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: December 17, 1996
    Assignee: G. D. Searle & Co.
    Inventors: Nizal S. Chandrakumar, Barbara B. Chen, Michael Clare, Bipinchandra N. Desai, Stevan W. Djuric, Stephen H. Docter, Alan F. Gasiecki, Richard A. Haack, Chi-Dean Liang, Julie M. Miyashiro, Thomas D. Penning, Mark A,. Russell, Stella S. Yu
  • Patent number: 5486539
    Abstract: A class of substituted phenylacetonitrile-alkylaminoalkyl-ortho-substituted aryl compounds having immunosuppressive properties is described. Compounds of this class would be useful in reducing recipient rejection of transplanted organs and for treatment of autoimmune or inflammatory diseases. Compounds of particular interest are of the formula ##STR1## wherein m is one or two; wherein n is a number selected from one to five, inclusive; wherein R.sup.1 is selected from hydrido, alkyl, hydroxyalkyl, cycloalkyl, cycloalkylalkyl, alkoxyalkyl, alkenyl and alkynyl; wherein R.sup.6 is selected from loweralkyl; wherein each of R.sup.8, R.sup.9, R.sup.10 and R.sup.12 through R.sup.16 is independently selected from hydrido, hydroxy, alkyl, hydroxyalkyl, alkoxy, alkenyl, alkynyl, alkylcarbonyl, alkoxycarbonyl, alkylcarbonylalkenyl, alkylaminocarbonyl and alkoxyalkyl; with the proviso that at least one of R.sup.12 and R.sup.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: January 23, 1996
    Assignee: G. D. Searle & Co.
    Inventors: Chi-Dean Liang, John P. McKearn, John M. Farah, Jr., Richard A. Mueller
  • Patent number: 5162569
    Abstract: A class of substituted phenylacetonitrilealkylaminoalkyl-ortho-substituted aryl compounds having immunosuppressive properties is described. Compounds of this class would be useful in reducing recipient rejection of transplanted organs and for treatment of autoimmune or inflammatory diseases. Compounds of particular interest are of the formula ##STR1## wherein m is one or two; wherein n is a number selected from one to five, inclusive; wherein R.sup.1 is selected from hydrido, alkyl, hydroxyalkyl, cycloalkyl, cycloalkylalkyl, alkoxyalkyl, alkenyl and alkynyl; wherein R.sup.6 is selected from loweralkyl; wherein each of R.sup.8, R.sup.9, R.sup.10 and R.sup.12 through R.sup.16 is independently selected from hydrido, hydroxy, alkyl, hydroxyalkyl, alkoxy, alkenyl, alkynyl, alkylcarbonyl, alkoxycarbonyl, alkylcarbonylalkenyl, alkylaminocarbonyl and alkoxyalkyl; with the proviso that at least one of R.sup.12 and R.sup.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: November 10, 1992
    Assignee: G. D. Searle & Co.
    Inventors: Chi-Dean Liang, John P. McKearn, John M. Farah, Jr., Richard A. Mueller
  • Patent number: 5132311
    Abstract: Cyanoguanidines which have activity as Class III antiarrhythmic agents, acting by prolonging cardiac action potential repolarization. The invention further provides for compositions incorporating the compounds and methods of their use, as well as providing for pharmaceutically acceptable salts of the compounds.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: July 21, 1992
    Assignee: G. D. Searle & Co.
    Inventor: Chi-Dean Liang
  • Patent number: 4681970
    Abstract: The invention relates to compounds of the formula: ##STR1## which are useful cardiovascular agents.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: July 21, 1987
    Assignee: G. D. Searle & Co.
    Inventor: Chi-Dean Liang
  • Patent number: 4650874
    Abstract: The invention relates to compounds of the formula: ##STR1## which are useful cardiovascular agents.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: March 17, 1987
    Assignee: G. D. Searle & Co.
    Inventors: Kurt J. Rorig, Chi-Dean Liang, Robert W. Hamilton
  • Patent number: 4628095
    Abstract: The invention relates to compounds of the formula: ##STR1## which are useful cardiovascular agents.
    Type: Grant
    Filed: June 5, 1985
    Date of Patent: December 9, 1986
    Assignee: G. D. Searle & Co.
    Inventors: Kurt J. Rorig, Stevan W. Djuric, Kerry W. Fowler, Chi-Dean Liang
  • Patent number: 4600710
    Abstract: .beta.-Adrenergic receptor site activation by novel pyridinemethanol derivatives and pharmaceutical compositions and methods of use thereof are described.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: July 15, 1986
    Assignee: G. D. Searle & Co.
    Inventors: Chi-Dean Liang, Gerald M. Walsh
  • Patent number: 4593042
    Abstract: The invention relates to compounds of the formula: ##STR1## which are useful cardiovascular agents.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: June 3, 1986
    Assignee: G. D. Searle & Co.
    Inventor: Chi-Dean Liang
  • Patent number: 4499289
    Abstract: The invention relates to octahydronapthalenes which are useful in antiatherosclerotic agents.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: February 12, 1985
    Assignee: G. D. Searle & Co.
    Inventors: John S. Baran, Chi-Dean Liang
  • Patent number: 4404144
    Abstract: This invention relates to .beta.-Alkyl-.beta.-Hydroxy Glutaric acid .differential. ester derivatives which are useful as anti-hyperlipoproteinemia agents.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: September 13, 1983
    Assignee: G. D. Searle & Co.
    Inventor: Chi-Dean Liang
  • Patent number: 4264517
    Abstract: Alkylphenyl 5Z,8Z,11Z,14Z,17Z-eicosapentaenoates having platelet aggregation inhibiting and antisecretory activity and methods of preparation thereof are disclosed.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: April 28, 1981
    Assignee: G.D. Searle & Co.
    Inventor: Chi-Dean Liang
  • Patent number: 4181670
    Abstract: Preparation and use of platelet aggregation inhibiting and antisecretory phenyl 5Z,8Z,11Z,14Z-eicosatetraenoate and congeners are disclosed.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: January 1, 1980
    Assignee: G. D. Searle & Co.
    Inventor: Chi-Dean Liang
  • Patent number: 3972907
    Abstract: 2,2-Dialkylated arachidonic acid and esters are prepared from the alkyl esters of arachidonic acid by treatment with the appropriate alkyl iodide. The compounds so produced are useful as pharmacological agents in view of their ability to inhibit lipogenesis.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: August 3, 1976
    Assignee: G. D. Searle & Co.
    Inventors: John S. Baran, Chi-Dean Liang