Patents by Inventor Yadagiri Pendri

Yadagiri Pendri 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: 20060264406
    Abstract: Mono-lysine salts of triazole compounds having a secondary or tertiary hydroxy group are provided. More particularly, the new water-soluble triazole antifungal mono-lysine salt compounds, or solvates thereof, are provided having the general formula I: wherein A in formula I represents the non-hydroxy portion of a triazole antifungal compound of the type containing a secondary or tertiary hydroxyl group. R and R1 in formula I can each be a hydrogen atom or an alkyl group having one to six carbon atoms. The novel water-soluble azole compounds are useful for the treatment of fungal infections and can be administered orally, topically and parenterally.
    Type: Application
    Filed: May 3, 2006
    Publication date: November 23, 2006
    Applicant: Eisai Co., Ltd.
    Inventors: Qi Gao, Chung-Pin Chen, Michael Fakes, Yadagiri Pendri, Susanne Kiau, Blisse Vakkalagadda
  • Publication number: 20060106216
    Abstract: Processes are disclosed for preparing the antiviral agent entecavir. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various intermediates useful in the preparation of entecavir are also disclosed.
    Type: Application
    Filed: December 19, 2005
    Publication date: May 18, 2006
    Inventors: Yadagiri Pendri, Chung-Pin Chen, Jing Liang, Shaopeng Wang, Milan Stojanovic, Richard Polniaszek, John Thottathil, Dhileepkumar Krishnamurty
  • Publication number: 20050272932
    Abstract: Processes for preparing entecavir and novel intermediates thereof using carbon-silicon oxidation.
    Type: Application
    Filed: June 2, 2005
    Publication date: December 8, 2005
    Inventors: Maotang Zhou, Emily Reiff, Purushotham Vemishetti, Yadagiri Pendri, Ambarish Singh, Siva Prasad, Ulhas Dhokte, Xinhua Qian, Pia Mountford, Kerry Hartung, Helen Sailes
  • Patent number: 6515136
    Abstract: Methods for the preparation of biphenyl isoxazole sulfonamides and intermediates thereof. The present invention also relates to the novel intermediates prepared by these methods. The biphenyl isoxazole sulfonamides prepared by the present methods are endothelin antagonists useful, inter alia, for the treatment of hypertension.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: February 4, 2003
    Assignee: Bristol-Myers Squibb Company
    Inventors: Richard P. Polniaszek, Xuebao Wang, Jeffrey S. DePue, Chennagiri R. Pandit, Kumar G. Gadamasetti, Yadagiri Pendri, Eduardo J. Martinez
  • Patent number: 6448401
    Abstract: An improved process is provided for preparing water-soluble prodrugs of triazole antifungal compounds containing a secondary or tertiary hydroxyl group. More particularly, the improved process is directed toward preparation of water-soluble triazole antifungal compounds are provided having the general formula wherein A is the non-hydroxy portion of a triazole antifungal compound of the type containing a secondary or tertiary hydroxyl group and R and R1 are as defined in the specification.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: September 10, 2002
    Assignee: Bristol-Myers Squibb Company
    Inventors: Chung-Pin Chen, Timothy Paul Connolly, Laxma Reddy Kolla, John D. Matiskella, Richard H. Mueller, Yadagiri Pendri, Dejah T. Petsch
  • Publication number: 20020062028
    Abstract: An improved process is provided for preparing water-soluble prodrugs of triazole antifungal compounds containing a secondary or tertiary hydroxyl group.
    Type: Application
    Filed: October 16, 2001
    Publication date: May 23, 2002
    Inventors: Chung-Pin Chen, Timothy Paul Connolly, Laxma Reddy Kolla, John D. Matiskella, Richard H. Mueller, Yadagiri Pendri, Dejah T. Petsch
  • Patent number: 5856507
    Abstract: Methods for the preparation of biphenyl isoxazole sulfonamides and intermediates thereof. The present invention also relates to the novel intermediates prepared by these methods. The biphenyl isoxazole sulfonamides prepared by the present methods are endothelin antagonists useful, inter alia, for the treatment of hypertension.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: January 5, 1999
    Assignee: Bristol-Myers Squibb Co.
    Inventors: Richard P. Polniaszek, Xuebao Wang, Jeffrey S. DePue, Chennagiri R. Pandit, Kumar G. Gadamasetti, Yadagiri Pendri, Eduardo J. Martinez
  • Patent number: 5594153
    Abstract: A novel, overall process for the preparation of a compound of the formula I: ##STR1## where R.sup.1 and R.sup.2 are each independently hydrogen, an alkyl group, a cycloalkyl group, an aryl group or, taken together with the carbon atom to which they are attached, form a cycloalkyl group; andR.sup.3 is hydrogen, an alkyl group, or an aryl group, or salts thereof, useful as intermediates in the preparation of HMG-CoA reductase inhibitors; novel methods within the overall process; and novel intermediates produced by those methods.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: January 14, 1997
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: John K. Thottathil, Yadagiri Pendri, Wen-Sen Li, David R. Kronenthal
  • Patent number: 5539126
    Abstract: A method is provided for preparing homochiral maleimide intermediates of the structure ##STR1## wherein R.sup.7, R.sup.8 and R.sup.9 are as defined herein by reacting a homochiral amine of the structure ##STR2## with maleic anhydride and a silylating agent. The maleimide intermediate is used in the enantio-selective preparation of thromboxane A.sub.2 receptor antagonists.
    Type: Grant
    Filed: April 20, 1994
    Date of Patent: July 23, 1996
    Assignee: Bristol-Myers Squibb Company
    Inventors: Michael J. Humora, Richard H. Mueller, Janak Singh, Yadagiri Pendri
  • Patent number: 5457227
    Abstract: A novel, overall process for the preparation of a compound of the formula I: ##STR1## where R.sup.1 and R.sup.2 are each independently hydrogen, an alkyl group, a cycloalkyl group, an aryl group or, taken together with the carbon atom to which they are attached, form a cycloalkyl group; andR.sup.3 is hydrogen, an alkyl group, or an aryl group, or salts thereof, useful as intermediates in the preparation of HMG-CoA reductase inhibitors; novel methods within the overall process; and novel intermediates produced by those methods.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: October 10, 1995
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: John K. Thottathil, Yadagiri Pendri, Wen-Sen Li, David R. Kronenthal
  • Patent number: 5278313
    Abstract: A novel, overall process for the preparation of a compound of the formula I: ##STR1## where R.sup.1 and R.sup.2 are each independently hydrogen, an alkyl group, a cycloalkyl group, an aryl group or, taken together with the carbon atom to which they are attached, form a cycloalkyl group; andR.sup.3 is hydrogen, an alkyl group, or an aryl group,or salts thereof, useful as intermediates in the preparation of HMG-CoA reductase inhibitors; novel methods within the overall process; and novel intermediates produced by those methods.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: January 11, 1994
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: John K. Thottathil, Yadagiri Pendri, Wen-Sen Li, David R. Kronenthal