Patents by Inventor Venkatachala L. Narayanan

Venkatachala L. Narayanan 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: 6943191
    Abstract: Disubstituted lavendustin A analogs that are PTK inhibitors having antiproliferative activity are described. Preferred compounds of the disclosure, without limitation, satisfy either Formula 1 or Formula 2. The present disclosure also provides pharmaceutical compositions comprising effective amounts of disubstituted lavendustin A analogs and potentially comprising other active ingredients, other materials conventionally used in the formulation of pharmaceutical compositions, and mixtures thereof. The compounds and compositions of the disclosure can be used for treating subjects to, for example, inhibit the proliferation of living cells in the treatment of proliferative diseases.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: September 13, 2005
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Venkatachala L. Narayanan, Edward A. Sausville, Gurmeet Kaur, Ravi K. Varma
  • Patent number: 5272146
    Abstract: Certain new 1,2-dihydroellipticine compounds having activity against CNS specific cancer cell lines because of their ease of passage across the blood-brain barrier are disclosed along with formulations and methods for treating CNS cancers employing these compounds.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: December 21, 1993
    Assignees: The United States of America as represented by the United States Department of Health and Human Services, Purdue Research Foundation
    Inventors: Rudiger D. Haugwitz, Venkatachala L. Narayanan, Mark Cushman, Jurjus Jurayj
  • Patent number: 4845101
    Abstract: Chemical compounds are provided including pyrazine diazohydroxides (I), as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. Compounds of the invention have pharmacological properties and are useful cytostatic agents and cell growth inhibiting agents.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: July 4, 1989
    Assignee: University of Alabama-Bd. of Trustees
    Inventors: David C. Baker, Elli S. Hand, Rudiger D. Haugwitz, Venkatachala L. Narayanan, Jang B. Rampal
  • Patent number: 4709033
    Abstract: Chemical compounds are provided including pyrazine diazohydroxides (I), as well as methods for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. Compounds of the invention have pharmacological properties and are useful cytostatic agents and cell growth inhibiting agents.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: November 24, 1987
    Assignee: Board of Trustees of the University of Alabama
    Inventors: David C. Baker, Elli S. Hand, Rudiger D. Haugwitz, Venkatachala L. Narayanan, Jang B. Rampal
  • Patent number: 4670461
    Abstract: New substituted, formaldehyde derived mitindomide and methods of preparing the same are disclosed. The novel compounds are water soluble and have anti-neoplastic activity. The formaldehyde derived mitindomide is prepared by reacting mitindomide with formaldehyde and further acetylating the derived hydroxymethyl compound. The amido compounds can be derived by reacting mitindomide in mannich fashion, i.e-formaldehyde and secondary amines.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: June 2, 1987
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Rudiger D. Haugwitz, Venkatachala L. Narayanan, Leon H. Zalkow, Howard M. Deutsch
  • Patent number: 4599352
    Abstract: New substantially isomerically pure tetrahalo (1,2-diaminocyclohexane) Pt (IV) complexes having antineoplastic activity are disclosed.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: July 8, 1986
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Venkatachala L. Narayanan, Mary K. Wolpert-Defilippes, Rudiger D. Haugwitz
  • Patent number: 4192889
    Abstract: The rate of growth and feed efficiency of ruminants is increased by adding to the feed of ruminants an effective amount of the trichloroethyl ester of an essential amino acid.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: March 11, 1980
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic P. Hauck, Venkatachala L. Narayanan, Jeremiah J. O'Connor, Raymond R. Pilote
  • Patent number: 4172148
    Abstract: The rate of growth and feed efficiency of ruminants is increased by adding to the feed of ruminants an effective amount of the trichloroethyl ester of an essential amino acid.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: October 23, 1979
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic P. Hauck, Venkatachala L. Narayanan, Jeremiah J. O'Connor, Raymond R. Pilote
  • Patent number: 4156789
    Abstract: 5,6,7,8-Tetrahydro-1,6,7-naphthalenetriols having the formula ##STR1## wherein R.sup.8, R.sup.9 and R.sup.10 are the same or different and are hydrogen, lower alkyl, monocyclic aryl-lower alkyl, lower alkoxy, carboxy, or monocyclic cycloalkyl, are intermediates useful in the preparation of compounds used to treat coronary diseases.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: May 29, 1979
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic P. Hauck, Christopher M. Cimarusti, Venkatachala L. Narayanan
  • Patent number: 4127578
    Abstract: Diene intermediates for indantetrols are provided having the structure ##STR1## wherein X is a single bond or a straight or branched chain alkylene group containing from 1 to 10 carbons, Y is ##STR2## wherein R.sub.7 is hydrogen, lower alkyl, arylalkyl or lower alkoxy and ##STR3## is taken together to form a piperidyl or pyrrolidyl radical, R.sub.8 and R'.sub.8 are lower alkyl or monocyclic cycloalkyl, n is 1 to 3, m and m' are 0, 1 or 2.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: November 28, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic P. Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
  • Patent number: 4092318
    Abstract: Compounds are provided having the structure ##STR1## WHEREIN N IS 1, 2 OR 3, M AND M' ARE 0, 1 OR 2, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and can be hydrogen, lower alkyl, halolower alkyl, acyl, lower alkoxy-carbonyl ##STR2## or lower alkoxyalkylene, X is a straight or branched bivalent aliphatic radical and Y is ##STR3## These compounds are useful in the treatment of hypertension.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: May 30, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
  • Patent number: 4065563
    Abstract: Compounds are provided having the formula ##STR1## which compounds are useful as anthelmintics, and anti-fungal and anti-bacterial agents. In addition, methods for preparing such compounds, intermediates prepared in such methods, useful compositions containing such compounds and methods for employing such compounds and compositions containing the same are also provided.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: December 27, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Venkatachala L. Narayanan, Hans H. Gadebusch, Rudiger D. Haugwitz
  • Patent number: 4053596
    Abstract: Compounds are provided having the structure ##STR1## wherein n is 1, 2 or 3, m is 0, 1 or 2, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 may be the same or different and can be hydrogen, lower alkyl, halo-lower alkyl, acyl, lower alkoxy-carbonyl ##STR2## amido ##STR3## or lower alkoxyalkylene, X is a straight or branched bivalent aliphatic radical and Y is ##STR4## These compounds are useful in the treatment of hypertension.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: October 11, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
  • Patent number: 4044040
    Abstract: Compounds are provided having the structure ##STR1## WHEREIN N IS 1, 2 OR 3, M AND M' ARE 0, 1, OR 2, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and can be hydrogen, lower alkyl, halolower alkyl, acyl, lower alkoxy-carbonyl ##STR2## or lower alkoxyalkylene, X is a straight or branched bivalent aliphatic radical and Y is ##STR3## These compounds are useful in the treatment of hypertension.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: August 23, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
  • Patent number: 4029676
    Abstract: Compounds having the formula ##STR1## wherein R.sup.1 is lower alkyl; R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.7 are the same or different and are hydrogen or lower alkyl; R.sup.8, R.sup.9, and R.sup.10 are the same or different and are hydrogen, lower alkyl, lower alkoxy or cycloalkyl; and R.sup.11 is acyl; are useful in the treatment of coronary diseases.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: June 14, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic P. Hauck, Christopher M. Cimarusti, Venkatachala L. Narayanan
  • Patent number: 4022781
    Abstract: Isothiocyanobenzoxazoles having the structure ##STR1## wherein R.sub.1 is hydrogen, alkyl, alkoxy, or halogen; X is O or S; R.sub.2 is 1-pyrrolidinyl, 1-piperidinyl, 4-morpholinyl, 4-thiamorpholinyl, 4-alkyl-1-piperazinyl, 4-alkyl-1-piperidinyl or 3-alkyl-1-pyrrolidinyl, are useful anthelmintic agents.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: May 10, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Venkatachala L. Narayanan, Glenn Anthony Jacobs, Rudiger D. Haugwitz
  • Patent number: 4022901
    Abstract: Compounds are provided having the formula ##STR1## which compounds are useful as anthelmintics, and anti-fungal and anti-bacterial agents. In addition, methods for preparing such compounds, intermediates prepared in such methods, useful compositions containing such compounds and methods for employing such compounds and compositions containing the same are also provided.
    Type: Grant
    Filed: March 5, 1975
    Date of Patent: May 10, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Venkatachala L. Narayanan, Hans H. Gadebusch, Rudiger D. Haugwitz
  • Patent number: 4003909
    Abstract: Compounds of the formula ##STR1## and their acid-addition salts wherein X is O or S; R is hydrogen, lower alkyl, phenyl, chloro, bromo, trifluoromethyl, lower alkoxy, phenoxy, or di(lower alkyl)amino; R.sup.1 is hydrogen, lower alkyl, phenyl, substituted-phenyl, cycloalkyl, or heterocyclic; and R.sup.3 is lower alkyl, substituted-lower alkyl, cycloalkyl, lower alkenyl, lower alkynyl, phenyl, or substituted phenyl; are disclosed. These compounds exhibit anthelmintic and antibacterial and antifungal activity.
    Type: Grant
    Filed: April 9, 1975
    Date of Patent: January 18, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Venkatachala L. Narayanan, Rudiger D. Haugwitz
  • Patent number: 3985755
    Abstract: Isothiocyanobenzoxazoles are provided having the structure ##SPC1##Wherein R.sup.1 is pyridyl or pyridyl substituted with alkyl, halogen, acetoxyalkyl or dialkylaminoalkyl and R.sup.2 is hydrogen, alkyl, halogen or alkoxy are useful anthelmintic agents and disinfectants.
    Type: Grant
    Filed: April 10, 1974
    Date of Patent: October 12, 1976
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Venkatachala L. Narayanan, Rudiger D. Haugwitz
  • Patent number: 3984407
    Abstract: Compounds are provided having the structure ##SPC1##Wherein n is 1, 2 or 3, m and m' are 0, 1 or 2, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and can be hydrogen, lower alkyl, halolower alkyl, acyl, lower alkoxy-carbonyl ##EQU1## amido ##EQU2## or lower alkoxyalkylene, X is a straight or branched bivalent aliphatic radical and Y is ##EQU3## These compounds are useful in the treatment of hypertension.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: October 5, 1976
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen