Patents by Inventor Hirak Basu

Hirak Basu 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: 20070287754
    Abstract: Conformationally restricted polyamine compounds useful in treatment of cancer and other diseases marked by abnormal cell proliferation are disclosed. Improved methods of synthesizing such compounds are also disclosed. In one method of the invention, a carbene-bearing or carbene equivalent-bearing compound is reacted with the double bond of an alkene compound to form a cyclopropyl ring as the first step in the synthesis.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 13, 2007
    Inventors: Benjamin Frydman, Linda Clifford, Aldonia Valasinas, Andrei Blokhin, Aparajita Sarkar, Hirak Basu, Venodhar Reddy, Laurence Marton, Yu Wang
  • Publication number: 20070161692
    Abstract: Novel conformationally restricted polyamine analogs are provided, as well as compositions comprising these novel polyamine analogs. Methods of using the novel polyamine analogs in treatment of diseases such as cancer are also provided. Also provided is a method of delivering these analogs specifically to tumor cells by covalently attaching polyamine analogs to porphyrin compounds, along with novel polyamine-porphyrin covalent conjugates.
    Type: Application
    Filed: December 20, 2006
    Publication date: July 12, 2007
    Applicant: Cellgate, Inc.
    Inventors: Benjamin Frydman, Linda Clifford, Laurence Marton, Venodhar Reddy, Aldonia Valasinas, Andrei Blokhin, Hirak Basu
  • Publication number: 20060276444
    Abstract: Porphyrin-polyamine conjugate compounds are disclosed which have anticancer and antitumor effects. The porphyrin moiety selectively localizes in tumors, while the polyamine moiety serves as a cytotoxic agent. Methods of making and using the porphyrin-polyamine conjugate compounds are also disclosed.
    Type: Application
    Filed: February 7, 2006
    Publication date: December 7, 2006
    Inventors: Benjamin Frydman, Linda Clifford, Aldonia Valasinas, Venodhar Reddy, Hirak Basu, Aparajita Sarkar, Subhra Bhattacharya, Yu Wang, Laurence Marton, Andrei Blokhin
  • Publication number: 20060030735
    Abstract: Conformationally restricted polyamine compounds useful in treatment of cancer and other diseases marked by abnormal cell proliferation are disclosed. Improved methods of synthesizing such compounds are also disclosed. In one method of the invention, a carbene-bearing or carbene equivalent-bearing compound is reacted with the double bond of an alkene compound to form a cyclopropyl ring as the first step in the synthesis.
    Type: Application
    Filed: August 16, 2005
    Publication date: February 9, 2006
    Applicant: CellGate, Inc.
    Inventors: Benjamin Frydman, Linda Clifford, Aldonia Valasinas, Andrei Blokhin, Aparajita Sarkar, Hirak Basu, Venodhar Reddy, Laurence Marton, Yu Wang
  • Publication number: 20050130949
    Abstract: Novel cyclic polyamine compounds of the form where A1, each A2 (if present), and A3 are independently selected from C1-C8 alkyl, where each Y is independently selected from H or C1-C4 alkyl, where M is selected from C1-C4 alkyl, where k is 0, 2, or 3, and where R is selected from C1-C32 alkyl, as well as all stereoisomers and salts thereof, are disclosed. Additional compounds where k is 1 and A2 is independently selected from C1-C3 alkyl or C5-C8 alkyl are also disclosed. Cyclic polyamines, where the amide group is reduced to a secondary amino group, and various derivatives of these compounds, are also described. Synthetic methods for the compounds are described. The compounds are useful for treating diseases caused by uncontrolled proliferation of cells, such as cancer, especially prostate cancer, and for inducing intracellular ATP hydrolysis for treatment of other disorders.
    Type: Application
    Filed: January 27, 2005
    Publication date: June 16, 2005
    Inventors: Benjamin Frydman, Manfred Hesse, Armin Guggisberg, Kasim Popaj, Konstantin Drandarov, Hirak Basu, Subhra Bhattacharya, Yu Wang
  • Publication number: 20050080144
    Abstract: Oligoamine compounds with anti-cancer and anti-proliferative activity are provided, as well as methods for making and using the compounds. The compounds are shown to be active against prostate cancer cell lines and against prostate cancer tumors in mice. The compounds are also useful in treatment of breast cancer and other cancers.
    Type: Application
    Filed: October 1, 2004
    Publication date: April 14, 2005
    Inventors: Benjamin Frydman, Aldonia Valasinas, Andrei Blokhin, Hirak Basu, Laurence Marton
  • Publication number: 20030072715
    Abstract: Novel cyclic polyamine compounds of the form 1
    Type: Application
    Filed: August 2, 2001
    Publication date: April 17, 2003
    Inventors: Benjamin Frydman, Manfred Hesse, Armin Guggisberg, Kasim Popaj, Konstantin Drandarov, Hirak Basu, Subhra Bhattacharya, Yu Wang