Patents by Inventor Walter Fuhrer

Walter Fuhrer 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: 20230047158
    Abstract: The present invention relates to a compound selected from (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine and a pharmaceutically acceptable salt thereof, and in particular to the phosphate salt of (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine, both having preferably an enantiomeric excess of the (R) form higher than or equal to 97%. Furthermore, the present invention relates to pharmaceutical compositions comprising the same, their use as a medicament and in methods of treatment of diseases and disorders in humans including women of child bearing potential and pediatric patients in which aldosterone over-exposure contributes to the deleterious effects of said diseases or disorders, as well as processes for preparing said inventive compounds.
    Type: Application
    Filed: August 9, 2022
    Publication date: February 16, 2023
    Inventors: Christoph SCHUMACHER, Walter FUHRER, Ronald Edward STEELE
  • Patent number: 11447491
    Abstract: The present invention relates to a compound selected from (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine and a pharmaceutically acceptable salt thereof, and in particular to the phosphate salt of (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine, both having preferably an enantiomeric excess of the (R) form higher than or equal to 97%. Furthermore, the present invention relates to pharmaceutical compositions comprising the same, their use as a medicament and in methods of treatment of diseases and disorders in humans including women of child bearing potential and pediatric patients in which aldosterone over-exposure contributes to the deleterious effects of said diseases or disorders, as well as processes for preparing said inventive compounds.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: September 20, 2022
    Assignee: DAMIAN PHARMA AG
    Inventors: Christoph Schumacher, Walter Fuhrer, Ronald Edward Steele
  • Publication number: 20210024519
    Abstract: The present invention relates to a compound selected from (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine and a pharmaceutically acceptable salt thereof, and in particular to the phosphate salt of (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine, both having preferably an enantiomeric excess of the (R) form higher than or equal to 97%. Furthermore, the present invention relates to pharmaceutical compositions comprising the same, their use as a medicament and in methods of treatment of diseases and disorders in humans including women of child bearing potential and pediatric patients in which aldosterone over-exposure contributes to the deleterious effects of said diseases or disorders, as well as processes for preparing said inventive compounds.
    Type: Application
    Filed: August 12, 2020
    Publication date: January 28, 2021
    Inventors: Christoph SCHUMACHER, Walter FUHRER, Ronald Edward STEELE
  • Patent number: 10822332
    Abstract: The present invention relates to a compound selected from (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine and a pharmaceutically acceptable salt thereof, and in particular to the phosphate salt of (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine, both having preferably an enantiomeric excess of the (R) form higher than or equal to 97%. Furthermore, the present invention relates to pharmaceutical compositions comprising the same, their use as a medicament and in methods of treatment of diseases and disorders in humans including women of child bearing potential and pediatric patients in which aldosterone over-exposure contributes to the deleterious effects of said diseases or disorders, as well as processes for preparing said inventive compounds.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: November 3, 2020
    Assignee: DAMIAN PHARMA AG
    Inventors: Christoph Schumacher, Walter Fuhrer, Ronald Edward Steele
  • Publication number: 20190292180
    Abstract: The present invention relates to a compound selected from (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine and a pharmaceutically acceptable salt thereof, and in particular to the phosphate salt of (R)-(+)-5-(p-cyanophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine, both having preferably an enantiomeric excess of the (R) form higher than or equal to 97%. Furthermore, the present invention relates to pharmaceutical compositions comprising the same, their use as a medicament and in methods of treatment of diseases and disorders in humans including women of child bearing potential and pediatric patients in which aldosterone over-exposure contributes to the deleterious effects of said diseases or disorders, as well as processes for preparing said inventive compounds.
    Type: Application
    Filed: October 26, 2017
    Publication date: September 26, 2019
    Applicant: DAMIAN PHARMA AG
    Inventors: Christoph SCHUMACHER, Walter FUHRER, Ronald Edward STEELE
  • Patent number: 4931591
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents hydrogen or acyl, A represents an optionally N-alkylated .alpha.-amino acid residue which is bonded N-terminally to R.sub.1 and C-terminally to the group --NR.sub.2 --, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl-lower alkyl, tricycloalkyl-lower alkyl, aryl or aryl-lower alkyl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents lower alkyl having 2 or more carbon atoms, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl, bicycloalkyl-lower alkyl, tricycloalkyl, tricycloalkyl-lower alkyl, aryl, aryl-lower alkyl, optionally substituted carbamoyl, optionally substituted amino, optionally substituted hydroxy or optionally substituted mercapto and R.sub.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: June 5, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Buhlmayer, Vittorio Rasetti, Walter Fuhrer, James L. Stanton, Richard Goschl
  • Patent number: 4914129
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents acyl substituted by a thio, sulphinyl or sulphonyl group, A represents an optionally N-alkylated .alpha.-amino acid residue that is bonded N-terminally to R.sub.1 and C-terminally to the group --NR.sub.2 --, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl-lower alkyl, tricycloalkyl-lower alkyl, aryl or aryl-lower alkyl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl, bicycloalkyl-lower alkyl, tricycloalkyl, tricycloalkyl-lower alkyl, aryl, aryl-lower alkyl, optionally substituted carbamoyl, optionally substituted amino, optionally substituted hydroxy, optionally substituted mercapto, sulphinyl or sulphonyl, and R.sub.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: April 3, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Buhlmayer, James L. Stanton, Walter Fuhrer, Richard Goschke, Vittorio Rasetti, Heinrich Rueger
  • Patent number: 4889869
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents acyl substituted by a thio, sulphinyl or sulphonyl group, A represents an optionally N-alkylated .alpha.-amino acid residue that is bonded N-terminally to R.sub.1 and C-terminally to the group --NR.sub.2 --, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl-lower alkyl, tricycloalkyl-lower alkyl, aryl or aryl-lower alkyl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl, bicycloalkyl-lower alkyl, tricycloalkyl, tricycloalkyl-lower alkyl, aryl, aryl-lower alkyl, optionally substituted carbamoyl, optionally substituted amino, optionally substituted hydroxy, optionally substituted mercapto, sulyhinyl or sulphonyl, and R.sub.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: December 26, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Buhlmayer, James L. Stanton, Walter Fuhrer, Richard Goschke, Vittorio Rasetti, Heinrich Rueger
  • Patent number: 4863903
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents hydrogen or acyl, X.sub.1 represents an optionally N-alkylated amino acid residue that is bonded N-terminally to R.sub.1 and C-terminally to X.sub.2, X.sub.2 represents an optionally N-alkylated amino acid residue that is bonded N-terminally to X.sub.1 and C-terminally to the group -NR.sub.2 -, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, alkyl, cycloalkyl, aryl-lower alkyl or aryl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents alkyl, cycloalkyl, aryl-lower alkyl or aryl, and R.sub.6 represents free or substituted amino or substituted hydroxy, and salts of such compounds having salt-forming groups inhibit the blood pressure-increasing action of the enzyme renin and can be used as anti-hypertensives.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: September 5, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Walter Fuhrer, Peter Buhlmayer, Vittorio Rasetti, Bernhard Riniker
  • Patent number: 4758584
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents acyl substituted by a thio, sulphinyl or sulphonyl group, A represents an optionally N-alkylated .alpha.-amino acid residue that is bonded N-terminally to R.sub.1 and C-terminally to the group --NR.sub.2 --, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl-lower alkyl, tricycloalkyl-lower alkyl, aryl or aryl-lower alkyl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl, bicycloalkyl-lower alkyl, tricycloalkyl, tricycloalkyl-lower alkyl, aryl, aryl-lower alkyl, optionally substituted carbamoyl, optionally substituted amino, optionally substituted hydroxy, optionally substituted mercapto, sulphinyl or sulphonyl, and R.sub.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: July 19, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Buhlmayer, James L. Stanton, Walter Fuhrer, Richard Goschke, Vittorio Rasetti, Heinrich Rueger
  • Patent number: 4727060
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents hydrogen or acyl, A represents an optionally N-alkylated .alpha.-amino acid residue which is bonded N-terminally to R.sub.1 and C-terminally to the group --NR.sub.2 --, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, lower alkyl, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl-lower alkyl, tricycloalkyl-lower alkyl, aryl or aryl-lower alkyl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents lower alkyl having 2 or more carbon atoms, optionally etherified or esterified hydroxy-lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, bicycloalkyl, bicycloalkyl-lower alkyl, tricycloalkyl, tricycloalkyl-lower alkyl, aryl, aryl-lower alkyl, optionally substituted carbamoyl, optionally substituted amino, optionally substituted hydroxy or optionally substituted mercapto and R.sub.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: February 23, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Buhlmayer, Vittorio Rasetti, Walter Fuhrer, James L. Stanton, Richard Goschke
  • Patent number: 4719288
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents hydrogen or acyl, X.sub.1 represents an optionally N-alkylated amino acid residue that is bonded N-terminally to R.sub.1 and C-terminally to X.sub.2, X.sub.2 represents an optionally N-alkylated amino acid residue that is bonded N-terminally to X.sub.1 and C-terminally to the group --NR.sub.2 --, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, alkyl, cycloalkyl, aryl-lower alkyl or aryl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents alkyl, cycloalkyl, aryl-lower alkyl or aryl, and R.sub.6 represents free or substituted amino or substituted hydroxy, and salts of such compounds having salt-forming groups inhibit the blood pressure-increasing action of the enzyme renin and can be used as anti-hypertensives.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: January 12, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Walter Fuhrer, Peter Buhlmayer, Vittorio Rasetti, Bernhard Riniker
  • Patent number: 4613676
    Abstract: Compounds of the formula ##STR1## in which R.sub.1 represents hydrogen or acyl, X.sub.1 represents an optionally N-alkylated amino acid residue that is bonded N-terminally to R.sub.1 and C-terminally to X.sub.2, X.sub.2 represents an optionally N-alkylated amino acid residue that is bonded N-terminally to X.sub.1 and C-terminally to the group --NR.sub.2 --, R.sub.2 represents hydrogen or lower alkyl, R.sub.3 represents hydrogen, alkyl, cycloalkyl, aryl- lower alkyl or aryl, R.sub.4 represents hydroxy or etherified or esterified hydroxy, R.sub.5 represents alkyl, cycloalkyl, aryl-lower alkyl or aryl, and R.sub.6 represents free or substituted amino or substituted hydroxy, and salts of such compounds having salt-forming groups inhibit the blood pressure-increasing action of the enzyme renin and can be used as anti-hypertensives.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: September 23, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Walter Fuhrer, Peter Buhlmayer, Vittorio Rasetti, Bernhard Riniker
  • Patent number: 4595677
    Abstract: Tetrapeptides of the formula I, ##STR1## in which R.sup.1 represents hydrogen or acyl, R.sup.2 represents alkyl or aralkyl, R.sup.3 represents free or functionally modified hydroxy, R.sup.4 represents free or substituted amino or free or etherified hydroxy, and -Pro-, -Phe- and -His- respectively represent the bivalent radicals of the amino acids proline, phenylalanine and histidine or the (D)-isomers thereof, salts of such compounds having salt-forming groups, and processes for their manufacture.The compounds inhibit the action of the enzyme renin and can be used as antihypertensives and for the treatment of cardiac insufficiency.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: June 17, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Bernhard Riniker, Peter Buhlmayer, Walter Fuhrer
  • Patent number: 4559354
    Abstract: The invention relates to novel substituted phenyl ethers of the formula ##STR1## in which Ar represents a mono- or bi-cyclic carbocyclic aryl radical, or a mono- or bi-cyclic heterocyclic aryl radical bonded to a phenylene radical by way of a ring carbon atom,Ph represents a phenylene radical,n has the value 0 to 1 andalk represents alkylene having from 2 to 5 carbon atoms, the nitrogen atom and the oxygen atom or, if n is 0, the aromatic radical being separated from each other by at least two carbon atoms in the unbranched chain, andR.sub.1 and R.sub.2 each represents, independently of the other, hydrogen or lower alkyl, or together represent lower alkylene, oxa-lower alkylene, thia-lower alkylene, aza-lower alkylene or N-lower alkyl-aza-lower alkylene,and salts thereof, especially pharmaceutically acceptable non-toxic acid addition salts. Such compounds possess, on the one hand, blocking properties towards .beta.-adrenergic receptors and can therefore be used as .beta.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: December 17, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: Walter Fuhrer, Franz Ostermayer, Markus Zimmermann
  • Patent number: 4251542
    Abstract: The present invention provides new imino compounds having the formula I ##STR1## wherein R.sub.1 represents an aliphatic or cycloaliphatic hydrocarbon radical, unsubstituted or substituted phenyl, or phenyl-lower alkyl or diphenyl-lower alkyl, which radicals are unsubstituted or substituted in the phenyl ring(s),R.sub.2 represents unsubstituted or substituted phenyl, unsubstituted or substituted monocyclic heteroaryl or lower alkyl,R.sub.3 represents hydrogen, lower alkyl, a carbonyl group linked with R.sub.2 to form a five-membered ring, or the group R.sub.6 --CO wherein R.sub.6 represents lower alkyl or unsubstituted or substituted phenyl,R.sub.4 represents, if present, hydrogen or lower alkyl which is independent or is linked with R.sub.1 to form a five- to seven-membered ring which can contain as ring members two aromatic ring carbon atoms of an unsubstituted or substituted phenyl or phenyl-lower-alkyl radical R.sub.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: February 17, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Atso Ilvespaa, Walter Fuhrer
  • Patent number: 4130652
    Abstract: The present invention provides new imino compounds having the formula I ##STR1## wherein R.sub.1 represents an aliphatic or cycloaliphatic hydrocarbon radical, unsubstituted or substituted phenyl, or phenyl-lower alkyl or diphenyl-lower alkyl, which radicals are unsubstituted or substituted in the phenyl ring(s),R.sub.2 represents unsubstituted or substituted phenyl, unsubstituted or substituted monocyclic heteroaryl or lower alkyl,R.sub.3 represents hydrogen, lower alkyl, a carbonyl group linked with R.sub.2 to form a five-membered ring, or the group R.sub.6 --CO wherein R.sub.6 represents lower alkyl or unsubstituted or substituted phenyl,R.sub.4 represents, if present, hydrogen or lower alkyl which is independent or is linked with R.sub.1 to form a five- to seven-membered ring which can contain as ring members two aromatic ring carbon atoms of an unsubstituted or substituted phenyl or phenyl-lower-alkyl radical R.sub.
    Type: Grant
    Filed: February 23, 1977
    Date of Patent: December 19, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Atso Ilvespaa, Walter Fuhrer