Patents by Inventor Mark D. Erion

Mark D. Erion 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: 6054587
    Abstract: Novel indole and azaindole compounds of the following structure and their use as fructose-1,6-bisphosphatase inhibitors is described: ##STR1## and pharmaceutically acceptable prodrugs and salts thereof.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: April 25, 2000
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: K. Raja Reddy, Gerard R. Scarlato, Qun Dang, Mark D. Erion, Srinivas Rao Kasibhatla, M. Rami Reddy
  • Patent number: 5864033
    Abstract: Novel compounds which selectively inhibit adenosine kinase and methods of preparing adenosine kinase inhibitors are provided. Also provided are methods of treating various conditions which may be ameliorated by increased local concentrations of adenosine using adenosine kinase inhibitors.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: January 26, 1999
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Clinton E. Browne, Bheemarao G. Ugarkar, Kevin M. Mullane, Harry E. Gruber, David A. Bullough, Mark D. Erion, Angelo Castellino
  • Patent number: 5795977
    Abstract: This invention relates to adenosine kinase inhibitors and to nucleoside analogs, specifically to water soluble, aryl substituted 4-amino pyrrolo?2,3-d! pyrimidine and pyrazolo?3,4-d! pyrimidine nucleoside analogs having activity as adenosine kinase inhibitors The invention also relates to the preparation and use of these adenosine kinase inhibitors in the treatment of cardiovascular, and cerebrovascular diseases, inflammation and other diseases which can be regulated by increasing the local concentration of adenosine.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: August 18, 1998
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Bheemarao G. Ugarkar, Mark D. Erion, Jorge E. Gomez Galeno
  • Patent number: 5775329
    Abstract: The present invention relates generally to methods of diagnosis, evaluation and treatment of coronary artery disease in mammals using substituted catecholamines and compounds therefore. It also relates to the preparation, use and administration of these compounds which are useful in the diagnosis, evaluation and treatment of coronary artery disease by means of a feedback controlled drug delivery system that delivers exercise simulating agents which are capable of eliciting acute responses similar to those elicited by aerobic exercise.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 7, 1998
    Assignee: Gensia, Inc.
    Inventors: Ernest K. Metzner, Mark D. Erion
  • Patent number: 5763596
    Abstract: This invention relates to adenosine kinase inhibitors and to nucleoside analogs, C-4' modified pyrrolo?2,3-d!pyrimidine and pyrazolo?3,4-d!pyrimidine nucleoside analogs having activity as adenosine kinase inhibitors. The invention relates to nucleoside analogs of this kind, having zero substitutions or two substitutions at the C-4' position of the furanose (sugar) moiety. The invention also relates to the preparation and use of these adenosine kinase inhibitors in the treatment of cardiovascular, and cerebrovascular diseases, inflammation and other diseases which can be regulated by increasing the local concentration of adenosine.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: June 9, 1998
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Serge H. Boyer, Bheemarao G. Ugarkar, Mark D. Erion
  • Patent number: 5763597
    Abstract: This invention relates to adenosine kinase inhibitors and to nucleoside analogs, specifically to orally active, substituted 5-aryl pyrrolo?2,3-d! pyrimidine and 3-aryl pyrazolo?3,4-d! pyrimidine nucleoside analogs having activity as adenosine kinase inhibitors. The invention also relates to the preparation and use of these and other adenosine kinase inhibitors in the treatment of cardiovascular and cerebrovascular diseases, inflammation and other diseases which can be regulated by increasing the local concentration of adenosine.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: June 9, 1998
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Bheemarao G. Ugarkar, Mark D. Erion, Jorge E. Gomez Galeno, Angelo J. Castellino, Clinton E. Browne
  • Patent number: 5731432
    Abstract: Novel diazepine derivatives which selectively inhibit adenosine monophosphate deaminase and methods of preparing these compounds are provided. These compounds are useful in treating certain conditions in vivo which may be ameliorated by increased local concentrations of adenosine.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: March 24, 1998
    Assignee: Gensia Sicor Inc.
    Inventors: Mark D. Erion, Brett C. Bookser, Srinivas Rao Kasibhatla, Harry E. Gruber
  • Patent number: 5726302
    Abstract: This invention relates to adenosine kinase inhibitors and to nucleoside analogs, specifically to water soluble, aryl substituted 4-amino pyrrolo?2,3-d! pyrimidine and pyrazolo?3,4-d! pyrimidine nucleoside analogs having activity as adenosine kinase inhibitors. The invention also relates to the preparation and use of these adenosine kinase inhibitors in the treatment of cardiovascular, and cerebrovascular diseases, inflammation and other diseases which can be regulated by increasing the local concentration of adenosine.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 10, 1998
    Assignee: Gensia Inc.
    Inventors: Bheemarao G. Ugarkar, Mark D. Erion, Jorge E. Gomez Galeno
  • Patent number: 5721356
    Abstract: This invention relates to adenosine kinase inhibitors and to nucleoside analogs, specifically to orally active, substituted 5-aryl pyrrolo?2,3-d!pyrimidine and 3-aryl pyrazolo?3,4-d! pyrimidine nucleoside analogs having activity as adenosine kinase inhibitors. The invention also relates to the preparation and use of these and other adenosine kinase inhibitors in the treatment of cardiovascular and cerebrovascular diseases, inflammation and other diseases which can be regulated by increasing the local concentration of adenosine.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 24, 1998
    Assignee: Gensia, Inc.
    Inventors: Bheemarao G. Ugarkar, Mark D. Erion, Jorge E. Gomez Galeno, Angelo J. Castellino, Clinton E. Browne
  • Patent number: 5674998
    Abstract: This invention relates to adenosine kinase inhibitors and to nucleoside analogs, C-4' modified pyrrolo?2,3-d!pyrimidine and pyrazolo?3,4-d!pyrimidine nucleoside analogs having activity as adenosine kinase inhibitors. The invention relates to nucleoside analogs of this kind, having zero substitutions or two substitutions at the C-4' position of the furanose (sugar) moiety. The invention also relates to the preparation and use of these adenosine kinase inhibitors in the treatment of cardiovascular, and cerebrovascular diseases, inflammation and other diseases which can be regulated by increasing the local concentration of adenosine.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 7, 1997
    Assignee: Gensia Inc.
    Inventors: Serge H. Boyer, Mark D. Erion, Bheemarao G. Ugarkar
  • Patent number: 5646128
    Abstract: Novel compounds which selectively inhibit adenosine kinase and methods of preparing adenosine kinase inhibitors are provided. Also provided are methods of treating various inflammatory conditions, including arthritis and SIRS, which may be ameliorated by increased local concentrations of adenosine using adenosine kinase inhibitors.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: July 8, 1997
    Assignee: Gensia, Inc.
    Inventors: Gary S. Firestein, Bheemarao G. Ugarkar, Leonard P. Miller, Harry E. Gruber, David A. Bullough, Mark D. Erion, Angelo J. Castellino, Clinton E. Browne
  • Patent number: 5565463
    Abstract: The specification discloses the compounds of formula I ##STR1## wherein (a) --CH.sub.2 Ar represents ##STR2## in which R.sub.1 represents hydrogen, halogen, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 -alkoxy, benzyloxy, hydroxy or trifluoromethyl; and R.sub.2 represents hydrogen, halogen, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 -alkoxy, benzyloxy, hydroxy or trifluoromethyl; provided that R.sub.2 represents hydrogen or C.sub.1 -C.sub.3 -alkyl if R.sub.1 represents trifluoromethyl, or that R.sub.1 represents hydrogen or C.sub.1 -C.sub.3 -alkyl if R.sub.2 represents trifluoromethyl; or(b) --CH.sub.2 Ar represents ##STR3## in which X represents sulfur or oxygen and in which attachment to the thiophene or furan ring is at the 2- or 3-position; and tautomers thereof; as purine nucleoside phosphorylase inhibitors.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: October 15, 1996
    Assignee: BioCryst Pharmaceuticals, Inc.
    Inventors: John A. Secrist, III, Mark D. Erion, John A. Montgomery, Steve Ealick
  • Patent number: 5506347
    Abstract: Novel lyxose derivatives which selectively inhibit adenosine kinase and methods of preparing these compounds are provided. These compounds are useful in treating certain conditions in vivo which may be ameliorated by increased local concentrations of adenosine.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: April 9, 1996
    Assignee: Gensia, Inc.
    Inventors: Mark D. Erion, Bheemarao G. Ugarkar, Angelo J. Castellino
  • Patent number: 5294632
    Abstract: The invention relates to the N-phosphonomethyl-biaryl substituted dipeptide derivatives of formula I ##STR1## and tetrazole derivatives of the formula Ia ##STR2## wherein A represents a direct bond, lower alkylene, phenylene or cyclohexylene; m represents 1 or zero, provided that m represents 1 when A is a direct bond; R.sub.2 represents hydrogen, hydroxy, lower alkyl, aryl-lower alkyl, C.sub.5 -C.sub.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: March 15, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Mark D. Erion, Stephane De Lombaert
  • Patent number: 5189039
    Abstract: Disclosed is a compound of the formula ##STR1## wherein R.sup.1 is H, NH.sub.2, or OCH.sub.3, R.sup.2 is an optionally substituted cyclic group optionally containing one or more heteroatoms, R.sup.3 and R.sup.4 are independently H or C.sub.1-4 alkyl, m is 0-4, n is 0-6, p is 0.1, X is CN, CSNH.sub.2, PO(OH).sub.2, COOH, SO.sub.2 NH.sub.2, NH.sub.2, OH, CNHNH.sub.2, tetrazole, triazole, or COR.sup.5 where R.sup.5 is C.sub.1-4 alkyl, CF.sub.3, NH.sub.2, or OC.sub.1-4 alkyl, and Y is O or NH that is useful as a pharmaceutical.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: February 23, 1993
    Assignee: BioCryst, Inc.
    Inventors: Shri Niwas, John A. Secrist, III, John A. Montgomery, Mark D. Erion, Wayne C. Guida, Steve E. Ealick
  • Patent number: 5155100
    Abstract: The invention relates to the N-phosphonomethyl-biaryl substituted dipeptide derivatives of formula I ##STR1## wherein A represents a direct bond, lower alkylene, phenylene or cyclohexylene; m represents 1 or zero, provided that m represents 1 when A is a direct bond; R.sub.2 represents hydrogen, hydroxy, lower alkyl, aryl-lower alkyl, C.sub.5 -C.sub.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: October 13, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Mark D. Erion, Stephane De Lombaert
  • Patent number: 5008265
    Abstract: Disclosed is a compound containing a 2-amino-7-(substituted methyl)-3H,5H-pyrrolo[3,2-d]pyrimidin-4-one wherein substituted methyl is --CH.sub.2 --R wherein R is an optionally substituted alicyclic group, a pharmaceutical composition containing the compound, and a method for the selective suppression of mammalian T-cell function without diminished effect on humoral immunity which involves administering the composition to a mammal.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: April 16, 1991
    Assignee: BioCryst, Inc.
    Inventors: John A. Secrist, III, John A. Montgomery, Steve E. Ealick, Mark D. Erion, Wayne C. Guida
  • Patent number: 5008270
    Abstract: Disclosed is a compound containing a 2-amino-7-(substituted methyl)-3H,5H-pyrrolo[3,2-d]pyrimidin-4-one wherein substituted methyl is --CH.sub.2 --R wherein R is an optionally substituted heteroalicyclic group, a pharmaceutical composition containing the compound, and a method for the selective suppression of mammalian T-cell function without diminished effect on humoral immunity which involves administering the composition to a mammal.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: April 16, 1991
    Assignee: BioCryst, Inc.
    Inventors: John A. Secrist, III, John A. Montgomery, Steve E. Ealick, Mark D. Erion, Wayne C. Guida
  • Patent number: 4985434
    Abstract: Disclosed is a compound containing 2-amino-7-(R)-3H,5H-pyrrolo[3,2-d]pyrimidin-4-one wherein R is optionally substituted cyclohexenyl or cyclohexyl, a pharmaceutical composition containing the compound, and a method for the selective suppresion of mammalian T-cell function without diminished effect on humoral immunity which involves administering the composition to a mammal.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: January 15, 1991
    Assignee: Biocryst, Inc.
    Inventors: John A. Secrist, III, John A. Montgomery, Steve E. Ealick, Mark D. Erion, Wayne C. Guida
  • Patent number: 4985433
    Abstract: Disclosed is a compound containing a 2-amino-7-(substituted methyl)-3H,5H-pyrrolo[3,2-d]pyrimidin-4-one wherein substituted methyl is --CH.sub.2 --R wherein R is optionally substituted pyridinyl, a pharmaceutical composition containing the compound, and a method for the selective suppression of mammalian T-cell function without diminished effect on humoral immunity which involves administering the composition to a mammal.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: January 15, 1991
    Assignee: BioCryst, Inc.
    Inventors: John A. Secrist, III, John A. Montgomery, Steve E. Ealick, Mark D. Erion, Wayne C. Guida