Patents by Inventor Steven M. Pitzenberger

Steven M. Pitzenberger 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: 5387512
    Abstract: Incubation of ##STR1## with a preparation from mammalian organ yields as biotransformation product the compound 3-[2-(benzoxazol-2-yl)ethyl]-5-(1-hydroxyethyl)-6-methyl-2-(1H)-pyridinone . This product is useful in the prevention or treatment of infection by HIV and the treatment of AIDS.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: February 7, 1995
    Assignee: Merck & Co. Inc.
    Inventors: Suresh K. Balani, Steven M. Pitzenberger, Harri G. Ramjit
  • Patent number: 5288725
    Abstract: A pyrroloquinoline compound of the following formula is disclosed: ##STR1## wherein H,C.sub.1-6 alkyl,R.sup.1 is: ##STR2## wherein R is H, C.sub.1-10 alkyl, or C.sub.1-6 alkyloxycarbonyl; R.sup.2 is:H,C.sub.1-6 alkyl, ##STR3## wherein R.sup.5 is C.sub.1-10 alkyl, aryl, or aryl C.sub.1-10 alkyl; R.sup.3 is:(CH.sub.2).sub.n NHR wherein R is H, C.sub.1-6 alkyl, or C.sub.1-6 alkyloxycarbonyl; ##STR4## R.sup.4 is: H,C.sub.1-6 alkyl,C.sub.1-6 alkyloxycarbonyl,RCH.sub.2 --, wherein R is H, C.sub.1-6 alkyl or aryl, or ##STR5## X is O, or NR.sup.6 wherein R.sup.6 is equal to H or C.sub.1-6 alkyl and n is an integer from 1-3.The compounds of the invention exhibit bradykinin antagonist activity as well as activity with .alpha.-adrenergic, histaminergic, and muscarinic receptors.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: February 22, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Keith M. Witherup, Richard W. Ransom, Sandor L. Varga, Steven M. Pitzenberger, Victor J. Lotti, William J. Lumma
  • Patent number: 5188950
    Abstract: Novel dipeptide isosteres are the biotransformed products after incubation with rat liver slices. They inhibit HIV protease, and are useful in the prevention or treatment of infection by HIV and the treatment of AIDS, either as compounds, pharmaceutically acceptable salts (when appropriate), pharmaceutical composition ingredients, whether or not in combination with other antivirals, anti-infectives, immunomodulators, antibiotics or vaccines. Methods of treating AIDS and methods of preventing or treating infection by HIV are also described.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: February 23, 1993
    Assignee: Merck & Co., Inc.
    Inventors: Suresh K. Balani, Harri G. Ramjit, Steven M. Pitzenberger, Michael S. Schwartz, Anthony Y. H. Lu
  • Patent number: 4943588
    Abstract: Prodrugs of 3-hydroxy-3-methylglutarylcoenzyme A (HMG-CoA) reductase inhibitors which are useful as antihypercholesterolemic agents and are represented by the following general structural formula (I): ##STR1## are disclosed.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: July 24, 1990
    Assignee: Merck & Co., Inc.
    Inventors: Wasyl Halczenko, Steven M. Pitzenberger, George Hartman
  • Patent number: 4939139
    Abstract: A metabolite of the known anxiolytic agent, 7-chloro-5,6-dihydro-3-(5-isopropyl-1,2,4-oxadiazol-3-yl)-5-methyl-6-oxo-4 H-i midazo[1,5a][1,4]benzodiazepine is a 1,2-dihydroxy derivative of the isopropyl moiety and is itself an anxiolytic agent of greater activity than its substrate.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: July 3, 1990
    Assignee: Merck & Co., Inc.
    Inventors: Jiunn H. Lin, Harri G. Ramjit, Steven M. Pitzenberger, Edgar H. Ulm
  • Patent number: 4904654
    Abstract: A metabolite of the known anxiolytic agent, 7-chloro-5,6-dihydro-3-(5-isopropyl-1,2,4-oxadiazol-3-yl)-5-methyl-6-oxo-4 H- imidazo[1,5a][1,4]benzodiazepine is a 2-hydroxy derivative of the isopropyl moiety and is itself an anxiolytic agent.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: February 27, 1990
    Assignee: Merck & Co., Inc.
    Inventors: Jiunn H. Lin, Steven M. Pitzenberger, Harri G. Ramjit, Edgar H. Ulm
  • Patent number: 4837205
    Abstract: Prodrugs of 3-hydroxy-3-methylglutarylcoenzyme A (HMG-CoA) reductase inhibitors which are useful as antihypercholesterolemic agents and are represented by the following general structural formula (I): ##STR1## are disclosed.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: June 6, 1989
    Assignee: Merck & Co., Inc.
    Inventors: Wasyl Halczenko, George Hartman, Steven M. Pitzenberger
  • Patent number: 4780538
    Abstract: A process for the preparation of 1,4-dihydropyridine compounds, especially N-substituted 1,4-dihydropyridine compounds, is disclosed. The compounds are useful as cardiovascular agents and also as starting materials for the preparation of certain cyclized compounds which have properties as calcium entry blockers.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: October 25, 1988
    Assignee: Merck & Co., Inc.
    Inventors: Steven M. Pitzenberger, Barry M. Trost
  • Patent number: 4678806
    Abstract: Prodrugs of 3-hydroxy-3-methylglutarylcoenzyme A (HMG-CoA) reductase inhibitors which are useful as antihypercholesterolemic agents and are represented by the following general structural formula (I): ##STR1## the amido ester moiety of which is in the L-configuration, and pharmaceutically acceptable salts thereof are disclosed.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: July 7, 1987
    Assignee: Merck & Co., Inc.
    Inventors: John J. Baldwin, Wasyl Halczenko, George Hartman, Steven M. Pitzenberger
  • Patent number: 4675321
    Abstract: Pharmaceutical compositions of specific substituted pyrimidines and methods of treatment of certain cardiovascular disorders are disclosed. Also disclosed are novel substituted acrylated pyrimidines which are useful as calcium channel blockers.
    Type: Grant
    Filed: February 7, 1986
    Date of Patent: June 23, 1987
    Assignee: Merck & Co., Inc.
    Inventors: John J. Baldwin, Steven M. Pitzenberger, David E. McClure
  • Patent number: 4594191
    Abstract: A non-fermentation process for preparing a benzodiazepinedione of the formula: ##STR1## and intermediates is disclosed.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: June 10, 1986
    Assignee: Merck & Co., Inc.
    Inventors: Mark G. Bock, Ben E. Evans, Roger M. Freidinger, Steven M. Pitzenberger
  • Patent number: 4576750
    Abstract: A non-fermentation process for preparing a benzodiazepinedione of the formula: ##STR1## and intermediates are disclosed.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: March 18, 1986
    Assignee: Merck & Co., Inc.
    Inventor: Steven M. Pitzenberger