Patents by Inventor Roshantha A. Chandraratna

Roshantha A. Chandraratna 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).

  • Publication number: 20020156054
    Abstract: Aryl-substituted and aryl and (3-oxo-1-propenly)-substituted benzopyran, benzothiopyran, 1,2-dihydroquinoline, and 5,6-dihydronaphthalene derivatives have retinoid negative hormone and/or antagonist-like biological activities. The invented RAR antagonists can be administered to mammals, including humans, for the purpose of preventing or diminishing action of RAR agonists on the bound receptor sites. Specifically, the RAR agonists are administered or coadministered with retinoid drugs to prevent or ameliorate toxicity or side effects caused by retinoids or vitamin A or vitamin A precursors. The retinoid negative hormones can be used to potentiate the activities of other retinoids and nuclear receptor agonists. For example, the retinoid negative hormone called AGN 193109 effectively increased the effectiveness of other retinoids and steroid hormones in in vitro transactivation assays. Additionally, transactivation assays can be used to identify compounds having negative hormone activity.
    Type: Application
    Filed: March 28, 2001
    Publication date: October 24, 2002
    Inventors: Elliott S. Klein, Alan T. Johnson, Andrew M. Standeven, Richard L. Beard, Samuel J. Gillett, Tien T. Duong, Sunil Nagpal, Vidyasagar Vuligonda, Min Teng, Roshantha A. Chandraratna
  • Publication number: 20020156082
    Abstract: Compounds having Formula 4 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
    Type: Application
    Filed: February 21, 2002
    Publication date: October 24, 2002
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Roshantha A. Chandraratna
  • Patent number: 6469028
    Abstract: Aryl-substituted and aryl and (3-oxo-1-propenly)-substituted benzopyran, benzothiopyran, 1,2-dihydroquinoline, and 5,6-dihydronaphthalene derivatives have retinoid negative hormone and/or antagonist-like biological activities. The invented RAR antagonists can be administered to mammals, including humans, for the purpose of preventing or diminishing action of RAR agonists on the bound receptor sites. Specifically, the RAR agonists are administered or coadministered with retinoid drugs to prevent or ameliorate toxicity or side effects caused by retinoids or vitamin A or vitamin A precursors. The retinoid negative hormones can be used to potentiate the activities of other retinoids and nuclear receptor agonists. For example, the retinoid negative hormone called AGN 193109 effectively increased the effectiveness of other retinoids and steroid hormones in in vitro transactivation assays. Additionally, transactivation assays can be used to identify compounds having negative hormone activity.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: October 22, 2002
    Assignee: Allergan, Inc.
    Inventors: Elliott S. Klein, Alan T. Johnson, Andrew M. Standeven, Richard L. Beard, Samuel J. Gillett, Tien T. Duong, Sunil Nagpal, Vidyasagar Vuligonda, Min Teng, Roshantha A. Chandraratna
  • Patent number: 6465646
    Abstract: Compounds of Formula 1 and of Formula 2 where the symbols have the meaning defined in the specification, have retinoid, retinoid antagonist or retinoid negative hormone like biological activity.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: October 15, 2002
    Assignee: Allergan, Inc.
    Inventors: Richard L. Beard, Diana F. Colon, Roshantha A. Chandraratna
  • Patent number: 6465663
    Abstract: Compounds of the formula where the symbols have the meaning described in the application, have retinoid-like or retinoid antagonist-like biological activity.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: October 15, 2002
    Assignee: Allergan, Inc.
    Inventors: Vidyasagar Vuligonda, Min Teng, Richard L. Beard, Alan T. Johnson, Yuan Lin, Roshantha A. Chandraratna
  • Patent number: 6465647
    Abstract: Compounds of the Formula 1, Formula 2, Formula 3 and Formula 4 wherein the symbols have the meaning assigned to them in the disclosure have retinoid-like biological activity.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: October 15, 2002
    Assignee: Allergan, Inc.
    Inventors: Richard L. Beard, Diana F. Colon, Roshantha A. Chandraratna
  • Patent number: 6455701
    Abstract: Compounds of the formula Y3(R4)—X—Y1(R1R2)—Z—Y2(R2)—A—B where the symbols have the meaning defined in the specification, have retinoid, retinoid antagonist or retinoid inverse agonist type biological activity.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: September 24, 2002
    Assignee: Allergan, Inc.
    Inventors: Tae K. Song, Min Teng, Roshantha A. Chandraratna
  • Publication number: 20020132796
    Abstract: Novel compounds having the Formulas 1 through 8, wherein the symbols have the meaning defined in the specification, and certain previously known compounds have been discovered to act as inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids. The compound can also be used in co-treatment with retinoids.
    Type: Application
    Filed: June 7, 2001
    Publication date: September 19, 2002
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Dehua Huang, Roshantha A. Chandraratna
  • Patent number: 6452032
    Abstract: Silicone-containing organic compounds useful as modulators of mammalian nuclear hormone receptors, particularly the retinoid receptors and the farnesoid receptors.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: September 17, 2002
    Assignee: Allergan Sales, LLC
    Inventors: Richard L. Beard, Michael E. Garst, Roshantha A. Chandraratna
  • Publication number: 20020128291
    Abstract: Proliferation of retinal pigment epithelium following surgery or trauma or resulting in ocular diseases associated with choroidal neovascularization, such as age related macular degeneration and histoplasmosis syndrome, is prevented by contacting retinal pigment epithelium cells with a therapeutic amount of a retinoic acid receptor (RAR agonist, preferably one with specific activity for retinoic acid receptors. Preferably the RAR agonist is also a potent antagonist of AP1-dependent gene expression. Alternatively, the proliferation of retinal pigment epithelium is ameliorated with a therapeutic amount of an AP-1 antagonist, alone or in combination with an RAR agonist. The drug can be administered by bolus injection into the vitreous cavity using a dosage from about 50 to 150 &mgr;g. Or by slow release from liposomes or an oil tamponade injected into the vitreous cavity. Formulations for preventing proliferation of retinal pigment epithelium are also provided.
    Type: Application
    Filed: September 11, 2001
    Publication date: September 12, 2002
    Applicant: Allergan, California corporation
    Inventors: Peter A. Campochiaro, Larry A. Wheeler, Roshantha A. Chandraratna, Sunil Nagpal, Eugene De Juan
  • Patent number: 6437129
    Abstract: Compounds of the formula wherein X, L, Y, A, B, W, R1, m, p and r are defined above.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: August 20, 2002
    Assignee: Allergan Sales, LLC
    Inventors: Min Teng, Tien T. Duong, Roshantha A. Chandraratna
  • Publication number: 20020099038
    Abstract: Compounds of the formula 1
    Type: Application
    Filed: July 6, 2001
    Publication date: July 25, 2002
    Inventors: Vidyasagar Vuligonda, Min Teng, Richard L. Beard, Alan T. Johnson, Yuan Lin, Roshantha A. Chandraratna
  • Publication number: 20020091262
    Abstract: Compounds of the formula 1
    Type: Application
    Filed: October 16, 2001
    Publication date: July 11, 2002
    Applicant: Allergan
    Inventors: Min Teng, Tien T. Duong, Roshantha A. Chandraratna
  • Publication number: 20020082419
    Abstract: Compounds of Formula 1 1
    Type: Application
    Filed: November 5, 2001
    Publication date: June 27, 2002
    Applicant: Allergan Sales, Inc.
    Inventors: Vidyasagar Vuligonda, Roshantha A. Chandraratna
  • Publication number: 20020077360
    Abstract: Retinoid compounds which act specifically or selectively on RAR&agr; receptor subtypes in preference over RAR&bgr; and RAR&Ggr; receptor subtypes, posses desirable pharmaceutical properties associated with retinoids, and are particularly suitable for treatment of tumors, such as acute monocytic leukemia, cervical carcinoma, myeloma, ovarian carcinomas and head and neck carcinomas, without having one or more undesirable side effects of retinoids, such as inducement of weight loss, mucocutaneous toxicity, skin irritation and teratogenecity.
    Type: Application
    Filed: November 29, 2001
    Publication date: June 20, 2002
    Applicant: Allergan Sales, Inc.
    Inventors: Min Teng, Tien T. Duong, Roshantha A. Chandraratna
  • Patent number: 6403638
    Abstract: Compounds having the formulas below, where R is H, lower alkyl, or a pharmaceutically acceptable salt, and where R1 represents i-propyl, t-butyl or n-butyl groups, have selective RXR retionoid agonist activity.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: June 11, 2002
    Assignee: Allergan Sales, Inc.
    Inventors: Vidyasagar Vuligonda, Kwok Yin Tsang, Jayasree Vasudevan, Roshantha A. Chandraratna
  • Patent number: 6399774
    Abstract: Compounds having Formula 1 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: June 4, 2002
    Assignee: Allergen Sales, Inc.
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Dehua Huang, Roshantha A. Chandraratna
  • Patent number: 6387951
    Abstract: Compounds having Formulas 5 and 6 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: May 14, 2002
    Assignee: Allergan Sales, Inc.
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Dehua Huang, Roshantha A. Chandraratna
  • Patent number: 6387892
    Abstract: Novel compounds having the Formulas 1 through 8, wherein the symbols have the meaning defined in the specification, and certain previously known compounds have been discovered to act as inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids. The compound can also be used in co-treatment with retinoids.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: May 14, 2002
    Assignee: Allergan Sales, Inc.
    Inventors: Jayasree Vasudevan, Alan T. Johnson, Liming Wang, Dehua Huang, Roshantha A. Chandraratna
  • Patent number: 6388105
    Abstract: Compounds of the formula Where the variables are defined as in the specification, are selective agonists of RXR retinoid receptors.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 14, 2002
    Assignee: Allergan Sales, Inc.
    Inventors: Vidyasagar Vuligonda, Roshantha A. Chandraratna