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).
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Patent number: 6943191Abstract: 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: GrantFiled: February 24, 1999Date of Patent: September 13, 2005Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Venkatachala L. Narayanan, Edward A. Sausville, Gurmeet Kaur, Ravi K. Varma
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Patent number: 5272146Abstract: 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: GrantFiled: October 2, 1992Date of Patent: December 21, 1993Assignees: The United States of America as represented by the United States Department of Health and Human Services, Purdue Research FoundationInventors: Rudiger D. Haugwitz, Venkatachala L. Narayanan, Mark Cushman, Jurjus Jurayj
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Patent number: 4845101Abstract: 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: GrantFiled: July 2, 1987Date of Patent: July 4, 1989Assignee: University of Alabama-Bd. of TrusteesInventors: David C. Baker, Elli S. Hand, Rudiger D. Haugwitz, Venkatachala L. Narayanan, Jang B. Rampal
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Patent number: 4709033Abstract: 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: GrantFiled: November 13, 1984Date of Patent: November 24, 1987Assignee: Board of Trustees of the University of AlabamaInventors: David C. Baker, Elli S. Hand, Rudiger D. Haugwitz, Venkatachala L. Narayanan, Jang B. Rampal
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Patent number: 4670461Abstract: 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: GrantFiled: April 26, 1984Date of Patent: June 2, 1987Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Rudiger D. Haugwitz, Venkatachala L. Narayanan, Leon H. Zalkow, Howard M. Deutsch
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Patent number: 4599352Abstract: New substantially isomerically pure tetrahalo (1,2-diaminocyclohexane) Pt (IV) complexes having antineoplastic activity are disclosed.Type: GrantFiled: March 1, 1984Date of Patent: July 8, 1986Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Venkatachala L. Narayanan, Mary K. Wolpert-Defilippes, Rudiger D. Haugwitz
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Patent number: 4192889Abstract: 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: GrantFiled: January 8, 1979Date of Patent: March 11, 1980Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic P. Hauck, Venkatachala L. Narayanan, Jeremiah J. O'Connor, Raymond R. Pilote
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Patent number: 4172148Abstract: 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: GrantFiled: May 19, 1978Date of Patent: October 23, 1979Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic P. Hauck, Venkatachala L. Narayanan, Jeremiah J. O'Connor, Raymond R. Pilote
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Patent number: 4156789Abstract: 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: GrantFiled: October 9, 1975Date of Patent: May 29, 1979Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic P. Hauck, Christopher M. Cimarusti, Venkatachala L. Narayanan
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Patent number: 4127578Abstract: 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: GrantFiled: September 12, 1977Date of Patent: November 28, 1978Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic P. Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
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Patent number: 4092318Abstract: 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: GrantFiled: March 15, 1976Date of Patent: May 30, 1978Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
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Patent number: 4065563Abstract: 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: GrantFiled: January 21, 1977Date of Patent: December 27, 1977Assignee: E. R. Squibb & Sons, Inc.Inventors: Venkatachala L. Narayanan, Hans H. Gadebusch, Rudiger D. Haugwitz
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Patent number: 4053596Abstract: 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: GrantFiled: January 14, 1976Date of Patent: October 11, 1977Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
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Patent number: 4044040Abstract: 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: GrantFiled: March 15, 1976Date of Patent: August 23, 1977Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen
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Patent number: 4029676Abstract: 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: GrantFiled: November 6, 1975Date of Patent: June 14, 1977Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic P. Hauck, Christopher M. Cimarusti, Venkatachala L. Narayanan
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Patent number: 4022781Abstract: 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: GrantFiled: April 26, 1976Date of Patent: May 10, 1977Assignee: E. R. Squibb & Sons, Inc.Inventors: Venkatachala L. Narayanan, Glenn Anthony Jacobs, Rudiger D. Haugwitz
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Patent number: 4022901Abstract: 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: GrantFiled: March 5, 1975Date of Patent: May 10, 1977Assignee: E. R. Squibb & Sons, Inc.Inventors: Venkatachala L. Narayanan, Hans H. Gadebusch, Rudiger D. Haugwitz
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Patent number: 4003909Abstract: 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: GrantFiled: April 9, 1975Date of Patent: January 18, 1977Assignee: E. R. Squibb & Sons, Inc.Inventors: Venkatachala L. Narayanan, Rudiger D. Haugwitz
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Patent number: 3985755Abstract: 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: GrantFiled: April 10, 1974Date of Patent: October 12, 1976Assignee: E. R. Squibb & Sons, Inc.Inventors: Venkatachala L. Narayanan, Rudiger D. Haugwitz
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Patent number: 3984407Abstract: 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: GrantFiled: April 21, 1975Date of Patent: October 5, 1976Assignee: E. R. Squibb & Sons, Inc.Inventors: Frederic Peter Hauck, Joyce Reid, Venkatachala L. Narayanan, Christopher M. Cimarusti, Rudiger D. Haugwitz, Joseph E. Sundeen