Patents by Inventor Ryszard Andruszkiewicz
Ryszard Andruszkiewicz 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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Publication number: 20030225161Abstract: A compound of the formula 1Type: ApplicationFiled: April 28, 2003Publication date: December 4, 2003Inventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6525096Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: February 25, 2003Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6414024Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: July 2, 2002Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6359169Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: October 16, 1996Date of Patent: March 19, 2002Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6342529Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: January 29, 2002Assignees: Northwestern University, Pfizer, Inc.Inventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6291526Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: September 18, 2001Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen
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Patent number: 6262120Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: July 17, 2001Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6255345Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: July 3, 2001Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6197819Abstract: A compound of the formula wherein R1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R2 is hydrogen or methyl; and R3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: April 11, 1995Date of Patent: March 6, 2001Assignee: Northwestern UniversityInventors: Richard B. Silverman, Ryszard Andruszkiewicz
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Patent number: 6140366Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: October 31, 2000Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen
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Patent number: 6117906Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: February 4, 1999Date of Patent: September 12, 2000Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 6028214Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are also disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are further disclosed.Type: GrantFiled: April 21, 1998Date of Patent: February 22, 2000Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 5863937Abstract: New derivatives of N.sup.3 -D-trans-2,3-epoxysuccinamoyl-L-2,3-diaminopropanoic acid of formula (1) ##STR1## wherein R.sub.1 is hydrogen; or R.sub.1 is the residue of an amino acid selected from L-valine, L-norvaline, L-leucine, L-isoleucine, L-norleucine, L-methionine, L-lysine, L-2-aminobutanoic acid, L-aspartic acid and L-glutamic acid;or R.sub.1 is the residue of a dipeptide selected from L-norvalyl-L-norvaline, L-lysyl-L-norvaline, L-methionyl-L-norvaline, L-glutamyl-L-norvaline, L-norvalyl-L-methionine, L-methionyl-L-methionine, L-leucyl-L-norvaline, L-norleucyl-L-norvaline, L-valyl-L-norvaline, L-glutamyl-L-leucine, L-asparginyl-L-norvaline and L-leucyl-L-leucine;wherein R.sub.2 is hydroxyl;or R.sub.2 is the residue of an amino acid selected from L-alanine, L-methionine, L-valine, L-norvaline, L-leucine, L-isoleucine, L-norleucine and L-2-aminobutanoic acid; with the provisos that when R.sub.1 is hydrogen then R.sub.2 is an amino acid residue and that when R.sub.Type: GrantFiled: April 8, 1996Date of Patent: January 26, 1999Assignee: BTG International LimitedInventors: Ryszard Andruszkiewicz, Henryk Chmara, Teresa Zieniawa, Edward Borowski
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Patent number: 5847151Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: July 10, 1997Date of Patent: December 8, 1998Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 5710304Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: October 16, 1996Date of Patent: January 20, 1998Assignee: Northwestern UniversityInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 5684189Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: April 12, 1995Date of Patent: November 4, 1997Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis Martin Sobieray, Lloyd Charles Franklin, Mark Alan Schwindt
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Patent number: 5608090Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: April 12, 1995Date of Patent: March 4, 1997Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis M. Sobieray, Lloyd C. Franklin, Mark A. Schwindt
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Patent number: 5599973Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: April 12, 1995Date of Patent: February 4, 1997Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis M. Sobieray, Lloyd C. Franklin, Mark A. Schwindt
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Patent number: 5563175Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a straight or branched alkyl group having from 1 to 6 carbon atoms, phenyl, or cycloalkyl having from 3 to 6 carbon atoms; R.sub.2 is hydrogen or methyl; and R.sub.3 is hydrogen, methyl or carboxyl; which is useful in the treatment of seizure disorders. Processes are disclosed for the preparation of the compound. Intermediates prepared during the synthesis of the compound are also disclosed.Type: GrantFiled: April 12, 1995Date of Patent: October 8, 1996Assignees: Northwestern University, Warner-Lambert CompanyInventors: Richard B. Silverman, Ryszard Andruszkiewicz, Po-Wai Yuen, Denis M. Sobieray, Lloyd C. Franklin, Mark A. Schwindt
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Patent number: 4923965Abstract: The subject of this present invention is tripeptides of N.sup.3 -4-methoxyfumaryl-L-2,3-diaminopropanoic acid of the general formula ##STR1## where R is a hydrogen atom when R.sub.1 is the dipeptide residue containing the residue of alanine, methonine, valine, leucine or norvaline, or R and R.sub.1 have the same meaning and are the residue of monoaminomonocarboxylic aminoacid, such as those of alanine, methionine, valine, leucine, or norvaline, or R is the dipeptide residue containing the residue of alanine, methionine, valine, leucine, norvaline, lysine, ornithine, sarcosine, 2,4-diaminobutanoic acid and 2,3-diaminopropanoic acid, and R.sub.1 is a hydroxide group, and the method of their obtaining. The method of obtaining involves converting N.sup.2 -tetrbutoxycarbonyl, N.sup.3 -4-methoxyfumaroyl-L-2,3-diaminopropanoic acid into an active ester which is used for acylating a dipeptide or N.sup.2 -tetr-butoxycarbonyl, N.sup.Type: GrantFiled: July 21, 1988Date of Patent: May 8, 1990Assignee: Politechnika GdanskaInventors: Ryszard Andruszkiewicz, Henryk Chmara, Slawomir Milewski, Edward Borowski, Maria Zaremba, Jerzy Borowski