Patents by Inventor K. Raja Reddy

K. Raja Reddy 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: 7816345
    Abstract: Novel cyclic phosphoramidate prodrugs of drugs of formula I their use in delivery of drugs to the liver, their use in enhancing oral bioavailability, and their method of preparation are described.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: October 19, 2010
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Mark D. Erion, K. Raja Reddy, Serge H. Boyer
  • Patent number: 7666855
    Abstract: Compounds of Formula I, stereoisomers, and pharmaceutically acceptable salts or prodrugs thereof, their preparation, and their uses for the treatment of hepatitis C viral infection are described:
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: February 23, 2010
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: K. Raja Reddy, Mark D. Erion
  • Publication number: 20090209481
    Abstract: Compounds having the formula I or II wherein R1, R2, B, and V are as defined herein are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.
    Type: Application
    Filed: November 26, 2008
    Publication date: August 20, 2009
    Inventors: Scott J. Hecker, K. Raja Reddy, Zhili Sun, Brett C. Bookser, David Bernard Smith
  • Publication number: 20090192121
    Abstract: Novel bisamidate phosphonate prodrugs of FBPase inhibitors of the Formula IA: and their use in the treatment of diabetes and other conditions associated with elevated blood glucose.
    Type: Application
    Filed: March 26, 2009
    Publication date: July 30, 2009
    Inventors: Tao Jiang, Srinivas Rao Kasibhatla, K. Raja Reddy
  • Publication number: 20090131370
    Abstract: Compounds of Formulae I-XVI, stereoisomers, and pharmaceutically acceptable salts or prodrugs thereof, their preparation, and their uses for the treatment of viral diseases including hepatitis C viral infection, cancer, diabetes, and other diseases are described: formula (I).
    Type: Application
    Filed: July 29, 2005
    Publication date: May 21, 2009
    Applicant: METABASIS THERAPEUTICS , INC.
    Inventors: K. Raja Reddy, Mark D. Erion
  • Publication number: 20090118223
    Abstract: Novel 2?-C-methyl nucleoside 5?-monophosphate and 4?-C-methyl nucleoside 5?-monophosphate derivatives, stereoisomers, and pharmaceutically acceptable salts or prodrugs thereof, their preparation, and their uses for the treatment of hepatitis C viral infection are described.
    Type: Application
    Filed: August 14, 2006
    Publication date: May 7, 2009
    Inventors: Mark D. Erion, K. Raja Reddy, Malcolm MacCoss, David B. Olsen
  • Patent number: 7498320
    Abstract: Compounds of Formula I, their preparation and synthetic intermediates, and their use in the synthesis of prodrugs: wherein: V and L are trans relative to one another; V is selected from group consisting of carbocyclic aryl, substituted carbocyclic aryl, heteroaryl, and substituted heteroaryl; and L is a leaving group selected from the group consisting of halogen, alkyl sulfonate, aryloxy optionally substituted with 1-2 substituents, N-containing heteroaryl, and N-hydroxy-nitrogen containing heteroaryl; and salts thereof.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: March 3, 2009
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: K. Raja Reddy, William Craigo, Zhili Sun, Serge Boyer, Bheemarao G. Ugarkar
  • Publication number: 20080125605
    Abstract: Novel cyclic phosphoramidate prodrugs of drugs of formula I their use in delivery of drugs to the liver, their use in enhancing oral bioavailability, and their method of preparation are described.
    Type: Application
    Filed: July 18, 2007
    Publication date: May 29, 2008
    Inventors: Mark D. Erion, K. Raja Reddy, Serge H. Boyer
  • Patent number: 7371739
    Abstract: Novel FBPase inhibitors of the formula I are useful in the treatment of diabetes and other conditions associated with elevated blood glucose.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: May 13, 2008
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Brett C. Bookser, Qun Dang, K. Raja Reddy
  • Patent number: 7351399
    Abstract: Prodrugs of formula I, their uses, their intermediates, and their method of manufacture are described: and pharmaceutically acceptable prodrugs and salts thereof.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: April 1, 2008
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Mark D. Erion, K. Raja Reddy, Edward D. Robinson, Bheemarao G. Ugarkar
  • Patent number: 7312219
    Abstract: Novel FBPase inhibitors of the formula I and X are useful in the treatment of diabetes and other conditions associated with elevated blood glucose.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: December 25, 2007
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Qun Dang, Srinivas Rao Kasibhatla, K. Raja Reddy, Mark D. Erion, M. Rami Reddy, Atul Agurwal
  • Patent number: 7303739
    Abstract: The present invention is directed towards novel cyclic phosph(oramid)ate prodrugs of alcohol-, amine-, and thiol-containing drugs, their preparation, their synthetic intermediates, and their uses. Another aspect of the invention is the use of the prodrugs to treat diseases that benefit from enhanced drug distribution to the liver and like tissues and cells that express cytochrome P450, including hepatitis, cancer, liver fibrosis, malaria, other viral and parasitic infections, and metabolic diseases where the liver is responsible for the overproduction of the biochemical end product, e.g. glucose (diabetes); cholesterol, fatty acids and triglycerides (hyperlipidemia) (atherosclerosis) (obesity). In one aspect, the invention is directed towards the use of the prodrugs to enhance oral drug delivery. In another aspect, the prodrugs are used to prolong pharmacodynamic half-life of the drug. In addition, the prodrug methodology of the current invention is used to achieve sustained delivery of the parent drug.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: December 4, 2007
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Mark D. Erion, K. Raja Reddy
  • Patent number: 7285543
    Abstract: Novel purine compounds of Formula 1, pharmaceutically acceptable prodrugs and salts thereof, and their use as fructose 1,6-bisphosphatase inhibitors.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: October 23, 2007
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Qun Dang, Mark D. Erion, M. Rami Reddy, Edward D. Robinson, Srinivas Rao Kasibhatla, K. Raja Reddy
  • Patent number: 7214668
    Abstract: Prodrugs of Formula I, their uses, their intermediates, and their method of manufacture are described: wherein: M and V are cis to one another and MPO3H2 is a phosphonic acid selected from the group consisting of 9-(2-phosphonylmethoxyethyl)adenine, (R)-9-(2-phosphonylmethoxy propyl)adenine, 9-(2-phosphonylmethoxyethyl)guanine, 9-(2-phosphonylmethoxy ethyloxy)adenine, 9-(2-phosphonylmethoxyethyl)-2,6-diaminopurine, (S)-1-(3-hydroxy-2-phosphonylmethoxypropyl)cytosine, (S)-9-(3-hydroxy-2-phosphonylmethoxypropyl)adenine, 9-(3-hydroxy-2-phosphonylmethoxypropyl)guanine, and (S)-9-(3-fluoro-2-phosphonyl methoxypropyl)adenine; V is selected from a group consisting of phenyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-furanyl, 3-furanyl, 2-thienyl, and 3-thienyl, all optionally substituted with 1-3 substituents selected from a group consisting of F, Cl, Br, C1-C3 alkyl, CF3 and OR6; R6 is selected from the group consisting of C1-C3 alkyl, and CF3; and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: May 8, 2007
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: K. Raja Reddy, Mark D. Erion, Michael C. Matelich, Joseph J. Kopcho
  • Patent number: 7205404
    Abstract: Novel cyclic phosphoramidate prodrugs of drugs of formula I in their use in delivery of drugs to the liver, their use in enhancing oral bioavailability, and their method of preparation are described.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: April 17, 2007
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Mark D. Erion, K. Raja Reddy, Serge H. Boyer
  • Patent number: 7193081
    Abstract: The method of preparing compounds of Formula I is described: wherein: M and V are cis to one another and MPO3H2 is a phosphonic acid selected from the group consisting of 9-(2-phosphonylmethoxyethyl)adenine, and (R)-9-(2-phosphonylmethoxypropyl)adenine; wherein V is phenyl, optionally substituted with 1–2 substituents selected from a group consisting of fluoro, chloro, and bromo; comprising: coupling a chiral 1-phenylpropane-1,3-diol, wherein the phenyl may be optionally substituted, with MPOCl2 or an N-6 substituted analogue thereof. Additionally, methods and salt forms are described that enable isolation and purification of the desired isomer.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: March 20, 2007
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Joseph J. Kopcho, K. Raja Reddy, Michael C. Matelich, Bheemarao G. Ugarkar
  • Patent number: 7148349
    Abstract: Compounds of Formula I, their preparation and synthetic intermediates, and their use in the synthesis of prodrugs: wherein: V and L are trans relative to one another; V is selected from group consisting of carbocyclic aryl, substituted carbocyclic aryl, heteroaryl, and substituted heteroaryl; and L is a leaving group selected from the group consisting of halogen, alkyl sulfonate, aryloxy optionally substituted with 1–2 substituents, N-containing heteroaryl, and N-hydroxy-nitrogen containing heteroaryl; and salts thereof.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: December 12, 2006
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: K. Raja Reddy, William Craigo, Zhili Sun, Serge Boyer, Bheemarao G. Ugarkar
  • Patent number: 6967193
    Abstract: Novel purine compounds of the Formula 1, pharmacuetically acceptable prodrugs and salts thereof, and their use as fructose 1,6-bisphosphatase inhibitors
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: November 22, 2005
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Qun Dang, Mark D. Erion, M. Rami Reddy, Edward D. Robinson, Srinivas Rao Kasibhatla, K. Raja Reddy
  • Patent number: 6965033
    Abstract: Novel bisamidate phosphonate prodrugs of FBPase inhibitors of the Formula IA: and their use in the treatment of diabetes and other conditions associated with elevated blood glucose.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: November 15, 2005
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Tao Jiang, Srinivas Rao Kasibhatla, K. Raja Reddy
  • Patent number: 6946115
    Abstract: Prodrugs of formula I, their uses, their intermediates, and their method of manufacturing are described: and pharmaceutically acceptable prodrugs and salts thereof.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: September 20, 2005
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Mark D. Erion, K. Raja Reddy, Edward D. Robinson, Bheemarao G. Ugarkar