Patents by Inventor Hsien C. Cheng

Hsien C. Cheng 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: 5739150
    Abstract: Piperidinyl thiacyclic derivatives useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors, pharmaceutical compositions and a methods of treatment using these compounds.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: April 14, 1998
    Assignee: Merrell Pharmaceuticals Inc.
    Inventors: Albert A. Carr, John M. Kane, George D. Maynard, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5650416
    Abstract: Piperidinyl thiacyclic derivatives of the formula ##STR1## wherein X, Y, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are defined in the specification, are useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors. Pharmaceutical compositions and methods of treatment using these compounds are also disclosed.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: July 22, 1997
    Assignee: Merrell Pharmaceuticals Inc.
    Inventors: Albert A. Carr, John M. Kane, George D. Maynard, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5631268
    Abstract: Piperidinyl thiacyclic derivatives of the formula ##STR1## wherein X, Y, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are defined in the specification, are useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors. Pharmaceutical compositions and methods of treatment using these compounds are also disclosed.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: May 20, 1997
    Assignee: Merrell Pharmaceuticals Inc.
    Inventors: Albert A. Carr, John M. Kane, George D. Maynard, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5602147
    Abstract: Piperidinyl thiacyclic derivatives useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors, pharmaceutical compositions and a methods of treatment using these compounds.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: February 11, 1997
    Assignee: Merrell Pharmaceuticals Inc.
    Inventors: Albert A. Carr, John M. Kane, George D. Maynard, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5596003
    Abstract: Piperidinyl thiacyclic derivatives useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors, pharmaceutical compositions and a methods of treatment using these compounds.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: January 21, 1997
    Assignee: Merrell Pharmaceuticals Inc.
    Inventors: Albert A. Carr, John M. Kane, George D. Maynard, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5541200
    Abstract: Piperidinyl thiacyclic derivatives ##STR1## wherein X, Y, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are defined in the specification. useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors, pharmaceutical compositions and a methods of treatment using these compounds.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: July 30, 1996
    Assignee: Merrell Pharmaceuticals Inc.
    Inventors: Albert A. Carr, John M. Kane, George D. Maynard, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5476861
    Abstract: Piperidinyl thiacyclic derivatives of the formula ##STR1## wherein X, Y, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are defined in the specification, are useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors. Pharmaceutical compositions and methods of treatment using these compounds are also disclosed.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: December 19, 1995
    Assignee: Merrell Dow Pharmaceuricals Inc.
    Inventors: Albert A. Carr, John M. Kane, George D. Maynard, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5436246
    Abstract: The present invention is directed to a new class of 2-optionally substituted-4-piperazine-benzothiophene derivatives of the formula ##STR1## in which Y is represented by hydrogen or C.sub.1-3 alkyl; R is represented by a substituent selected from the group consisting of hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, --CF.sub.3, --OCF.sub.3, and --OH; R.sub.1 is represented by hydrogen, cycloalkyl, C.sub.1-6 alkyl, phenyl optionally substituted, phenylalkyl, or phenylamidoalkyl; X is represented by hydrogen, --(CH.sub.2).sub.n X.sub.1, CH=CHX.sub.1 or CHX.sub.2 --(CH.sub.2).sub.q --CH.sub.3 ; n is an integer from 0-2; q is either the integer 0 or 1; X.sub.1 is represented by --OH--,--OR.sub.2, --NR.sub.2 R.sub.3, --CO.sub.2 R.sub.2, --CONR.sub.2 R.sub.3, --CN, or --COR.sub.2 ; R.sub.2 and R.sub.3 are each independently represented by hydrogen, C.sub.1-4 alkyl, phenyl optionally substituted, phenylalkyl, or R.sub.2 and R.sub.3 together form a (CH.sub.2).sub.m cycloalkyl, where m=2- 6; X.sub.2 is --OR.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: July 25, 1995
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Ronald C. Bernotas, Jeffrey S. Sprouse, Hsien C. Cheng
  • Patent number: 5380731
    Abstract: The present invention is directed to a new class of piperidinyl benzimidazoles that are useful in the treatment of allergic disorders.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: January 10, 1995
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Albert A. Carr, John M. Kane, Hsien C. Cheng
  • Patent number: 5371093
    Abstract: Piperidinyl thiacyclic derivatives ##STR1## wherein X, Y, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are defined in the specification. useful in the treatment of allergic diseases and diseases responding to antagonism of 5HT.sub.2 receptors, pharmaceutical compositions and a methods of treatment using these compounds.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: December 6, 1994
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Albert A. Carr, George D. Maynard, John M. Kane, Hsien C. Cheng, Mark W. Dudley
  • Patent number: 5198433
    Abstract: Applicants have discovered that certain previously known lactamimide derivatives possess, as a class, valuable calcium channel blocking activity. By virtue of this calcium antagonism activity the compounds are antihypertensives and will have other activities associated with calcium antagonists.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: March 30, 1993
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Michael G. Palfreyman, Norbert L. Wiech, Hsien C. Cheng, John M. Kane
  • Patent number: 5158945
    Abstract: Applicants have discovered that certain previously known lactamimide derivatives possess, as a class, valuable calcium channel blocking activity. By virtue of this calcium antagonism activity the compounds are antihypertensives and will have other activities associated with calcium antagonists.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: October 27, 1992
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Michael G. Palfreyman, Hsien C. Cheng, Norbert L. Wiech, John M. Kane
  • Patent number: 5128337
    Abstract: Applicants have discovered that certain previously known lactamimide derivatives possess, as a class, valuable calcium channel blocking activity. By virtue of this calcium antagonism activity the compounds are antihypertensives and will have other activities associated with calcium antagonists.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: July 7, 1992
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Michael G. Palfreyman, Norbert L. Wiech, Hsien C. Cheng, John M. Kane
  • Patent number: 5106845
    Abstract: The present invention is directed to a new class of cyclic guanidines of the formula: ##STR1## in which Q is represented by a substituent selected from the group consisting of (CH.sub.2).sub.n in which n is an integer from 2-10, ##STR2## A is a substituent selected from the group consisting of --NH--(CH.sub.2).sub.m in which m is an integer from 0-5, a piperidino substituent, or a piperazino substituent; both Ar and Ar.sub.1 are each independently represented by a phenyl ring, each of which may be optionally substituted with up to 3 substituents, each selected from the group consisting of halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, and trifluoromethyl; and R is represented by either hydrogen or a C.sub.1-4 alkyl; R.sub.1 is represented by hydrogen or a C.sub.1-4 alkyl; the optional isomers and tautomers thereof; and the pharmaceutically acceptable acid addition salts thereof, and their use as calcium antagonists.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: April 21, 1992
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Albert A. Carr, Hsien C. Cheng, John M. Kane
  • Patent number: 5082837
    Abstract: Applicants have discovered that certain previously known lactamimide derivatives possess, as a class, valuable calcium channel blocking activity. By virtue of this calcium antagonism activity the compounds are antihypertensives and will have other activites associated with calcium antagonists.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: January 21, 1992
    Assignee: Merrell Dow Pharmaceuticals
    Inventors: Michael G. Palfreyman, Norbert L. Wiech, Hsien C. Cheng, John M. Kane
  • Patent number: 5010072
    Abstract: Applicants have discovered that certain previously known lactamimide derivatives possess, as a class, valuable calcium channel blocking activity. By virtue of this calcium antagonism activity the compounds are antihypertensives and will have other activities associated with calcium antagonists.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: April 23, 1991
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Michael G. Palfreyman, Norbert L. Wiech, Hsien C. Cheng, John M. Kane
  • Patent number: 4999431
    Abstract: This invention relates to novel quinolyloxazole-2-ones which are useful as protein kinase C inhibitors, effective in the treatment of hypertension and asthma. This invention also includes a novel procedure for producing an intermediate ketone compound involving the reaction of a bromo-quinoline compound with butyl lithium and further reacting the lithiated compound with N-methyl-N-methoxyalkanamide.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: March 12, 1991
    Assignee: Merrell Dow Pharmaceuticals
    Inventors: Winton D. Jones, Richard C. Dage, George P. Claxton, Hsien C. Cheng, Phillip J. Robinson
  • Patent number: 4990519
    Abstract: This invention relates to novel quinolyloxazole-2-ones which are useful as protein kinase C inhibitors, effective in the treatment of hypertension and asthma. This invention also includes a novel procedure for producing an intermediate ketone compound involving the reaction of a bromo-quinoline compound with butyl lithium and further reacting the lithiated compound with N-methyl-N-methoxyalkanamide.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: February 5, 1991
    Assignee: Merrell Dow Pharmaceuticals
    Inventors: Winton D. Jones, George P. Claxton, Richard C. Dage, Hsien C. Cheng, Phillip J. Robinson
  • Patent number: 4908372
    Abstract: The present invention is directed to a new class of piperidinyl benzimidazole antihistamines which can be described by the following formula: ##STR1## wherein Y is represented by CO or CHOH; m is an integer from 1 to 2; R is represented by C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, hydroxy and hydrogen, X is represented by hydrogen, COOR.sub.2 in which R.sub.2 is represented by a C.sub.1-4 alkyl, or X is an alkylene phenyl radical of the formula: ##STR2## wherein T is represented by CHOH, CO, O, or a direct bond; R.sub.1 is represented by C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, hydroxy, 2,2-dimethyl ethanoic acid and hydrogen; n is an integer from 1 to 5; or a pharmaceutically acceptable acid addition salt thereof.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: March 13, 1990
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Albert A. Carr, Hsien C. Cheng, John M. Kane
  • Patent number: 4886811
    Abstract: This invention relates to novel quinolyloxazole-2-ones which are useful as protein kinase C inhibitors, effective in the treatment of hypertension and asthma. This invention also includes a novel procedure for producing an intermediate ketone compound involving the reaction of a bromo-quinoline compound with butyl lithium and further reacting the lithiated compound with N-methyl-N-methoxyalkanamide.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: December 12, 1989
    Assignee: Merrell Dow Pharmaceuticals
    Inventors: Winton D. Jones, George P. Claxton, Richard C. Dage, Hsien C. Cheng, Phillip J. Robinson