Patents by Inventor Holger C. Hansen

Holger C. Hansen 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: 5371080
    Abstract: Imidazoquinazoline compounds having the formula ##STR1## wherein Q is ##STR2## --COOR.sup.8 or --CN; wherein R.sup.1 is H, alkyl, unsubstituted or substituted cycloalkyl, alkoxy, alkoxyalkyl or CF.sub.3 ; R.sup.8 is alkyl; R.sup.2 and R.sup.3 independently are H, alkyl optionally substituted, hydroxyalkyl, alkoxy, alkoxyalkyl, alkoxycarbonylalkyl, formylalkyl, or an acetal thereof, or R.sup.2 and R.sup.3 together with the N-atom form a 4-6 membered monocyclic amino group in which ring system one or more of the carbon atoms may be exchanged with N, O or S, sulphinyl, sulphonyl or carbonyl or an acetal thereof, each of these ring systems optionally being substituted; R.sup.4, R.sup.5, R.sup.6 and R.sup.7 independently are H, OH, halogen, CF.sub.3, NO.sub.2, NH.sub.2, CN, alkyl, alkenyl, alkynyl, alkoxy, alkoxyalkyl or alkoxycarbonyl.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: December 6, 1994
    Assignee: Novo Nordisk A/S
    Inventors: Holger C. Hansen, Marit Kristiansen
  • Patent number: 5276028
    Abstract: The heterocyclic compounds having the general formula I ##STR1## wherein R.sup.3 is ##STR2## wherein R' is H, C.sub.1-6 -alkyl or C.sub.3-7 -cycloalkyl; --B-- is --C(R").dbd.N-- or --N.dbd.C(R")-- wherein R" is a cyclic amine or --NR"'R"", wherein R"' and R"" independently are H,C.sub.1-6 -alkoxy, C.sub.3-7 -cycloalkyl or C.sub.1-6 -alkyl.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: January 4, 1994
    Assignee: Nordisk A/S
    Inventor: Holger C. Hansen
  • Patent number: 5260298
    Abstract: Imidazotriazoloquinazoline compounds having the general formula ##STR1## wherein A together with the .alpha.-marked carbon atom and the .beta.-marked nitrogen atom is one of the groups ##STR2## cyano or CO.sub.2 R.sup.5, wherein R.sup.5 is H, alkyl, cycloalkyl, trifluoromethyl or alkoxymethyl; and R.sup.2, R.sup.3 and R.sup.4 independently are H, hydroxy, halogen, CN, alkyl, alkenyl, alkynyl, trifluoromethyl, alkoxy, dialkylaminoalkoxy, aralkoxy, aryloxy which may be substituted, acyclic amino group, or NR.sup.6 R.sup.7, wherein R.sup.6 and R.sup.7 independently are H or alkyl.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, antipsychotics, antiemetics, or in improving the cognitive function of the brain of mammals, or as benzodiazepine antagonsists.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: November 9, 1993
    Assignee: Novo Nordisk A/S
    Inventor: Holger C. Hansen
  • Patent number: 5116841
    Abstract: New imidazoquinoxaline compounds having the general formula I ##STR1## wherein ##STR2## wherein R.sup.1 and R.sup.2 independently are hydrogen, straight or branched C.sub.1-6 -alkyl, or C.sub.3-7 -cycloalkyl; R.sup.3 is hydrogen, straight or branched C.sub.1-6 -alkyl, straight or branched C.sub.2-6 -alkenyl, or aralkyl or aroylalkyl which may optionally be substituted with halogen or C.sub.1-6 -alkoxy; R.sup.4 amd R.sup.5 independently are hydrogen, halogen, C.sub.1-6 -alkyl or trifluoromethyl.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: May 26, 1992
    Assignee: Novo Nordisk A/S
    Inventors: Frank Watjen, Holger C. Hansen
  • Patent number: 5102885
    Abstract: New imidazoquinoxaline compounds having the general formula I ##STR1## wherein R.sup.1 and R.sup.2 independently are hydrogen, straight or branched C.sub.1-6 -alkyl, or C.sub.3-7 -cycloalkyl; R.sup.3 is hydrogen, straight or branched C.sub.1-6 -alkyl, straight or branched C.sub.2-6 -alkenyl, or aralkyl or aroylalkyl which may optionally be substituted with halogen or C.sub.1-6 -alkoxy; R.sup.4 and R.sup.5 independently are hydrogen, halogen, C.sub.1-6 -alkyl or trifluoromethyl.The compounds are useful in psychopharmaceutical preparations as anticonvolusants, anxiolytics, hypnotics and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: April 7, 1992
    Assignee: Novo Nordisk A/S
    Inventors: Frank Watjen, Holger C. Hansen
  • Patent number: 5100895
    Abstract: New imidazoquinazoline compounds having the general formula ##STR1## wherein A together with the .alpha.-marked carbon atom and the .beta.-marked nitrogen atom is one of the groups ##STR2## wherein R.sup.4, R.sup.5, R.sup.6 and R.sup.7 independently are hydrogen, halogen C.sub.1-6 -alkyl, aryl or aralkylR.sup.1 is ##STR3## cyano or CO.sub.2 R.sup.8, wherein R.sup.8 is hydrogen, C.sub.1-6 -alkyl or C.sub.3-7 -cycloalkyl, trifluoromethyl or C.sub.1-6 -alkoxymethyl,R.sup.2 and R.sup.3 independently are hydrogen, halogen, CN, C.sub.1-6 -alkyl, C.sub.2-6 -alkenyl, C.sub.2-6 -alkynyl, trifluoromethyl, C.sub.1-6 -alkoxy, dialkylaminoalkoxy, aralkoxy, aryloxy which may be substituted with halogen or alkoxy, a cyclic amino group, or NR.sup.9 R.sup.10, wherein R.sup.9 and R.sup.10 independently are hydrogen or C.sub.1-6 -alkyl.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: March 31, 1992
    Assignee: Novo Nordisk A/S
    Inventors: Holger C. Hansen, Marit Kristiansen
  • Patent number: 5075304
    Abstract: New imidazoquinoxaline compounds having the general formula ##STR1## wherein R.sup.3 is ##STR2## or CO.sub.2 R' wherein R' isC.sub.3-7 -cycloalkyl;R.sup.5 is methyl, which is substituted with hydrogen, alkoxycarbonyl, heteroaryl, morpholino, C.sub.3-7 -cycloalkyl, C.sub.1-6 -alkenyl, arylacyl, alkylacyl, alkoxyalkyl, alkoxy, phthalimidophenyl, aralkyl or aryl, all of which are substituted with hydrogen, halogen, C.sub.1-6 -alkyl, amino, azido, or C.sub.1-6 -alkoxy;and R.sup.6 is H, C.sub.1-6 -alkyl, halogen, or CF.sub.3.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: December 24, 1991
    Assignee: Novo Nordisk A/S
    Inventors: Holger C. Hansen, Frank Watjen
  • Patent number: 5034530
    Abstract: New imidazoquinoxaline compounds having the general formula ##STR1## wherein R.sup.3 is ##STR2## wherein R' is C.sub.1-6 -alkyl, which may be straight or branched, C.sub.3-7 -cycloalkyl or phenyl; andR.sup.4 is hydrogen or C.sub.1-6 -alkyl; and 5-N-oxides thereof.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: July 23, 1991
    Assignee: Novo Nordisk A/S
    Inventors: Holger C. Hansen, Frank Watjen
  • Patent number: 4999354
    Abstract: New imidazoquinoxaline compounds having the general formula ##STR1## wherein R.sup.3 is ##STR2## wherein R' is C.sub.1-6 -alkyl, C.sub.3-7 -cycloalkyl or C.sub.1-6 -alkoxymethyl; and--A-- is ##STR3## wherein R.sup.5 is hydrogen or halogen.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: March 12, 1991
    Assignee: A/S Ferrosan
    Inventors: Holger C. Hansen, Frank Watjen
  • Patent number: 4999353
    Abstract: The invention relates to a dealkylation chemical process for preparing imidazoquinoxalines bearing hydrogen substitution in the five position, and to valuable pharm-intermediates of the formula I ##STR1## wherein ##STR2## wherein R' is C.sub.1-6 -alkyl, C.sub.3-7 -cycloalkyl, phenyl, thienyl, or C.sub.1-3 -alkoxymethyland wherein R.sup.6 and R.sup.7 independently are hydrogen,halogen or CF.sub.3, used in that process. The intermediates also have anticonvulsant and anxiolytic properties.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: March 12, 1991
    Assignee: Novo Nordisk A/S
    Inventors: Frank Watjen, Holger C. Hansen
  • Patent number: 4968682
    Abstract: New imidazoquinoxaline compounds having the general formula ##STR1## wherein ##STR2## wherein R' is C.sub.1-6 -alkyl, C.sub.3-7 -cycloalkyl or C.sub.1-6 -alkoxymethyl; and ##STR3## wherein R.sup.5 is hydrogen or halogen. The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: November 6, 1990
    Assignee: A/S Ferrosan
    Inventors: Holger C. Hansen, Frank Watjen
  • Patent number: 4902686
    Abstract: New heterocyclic compounds having the general formula ##STR1## wherein R.sup.3 is ##STR2## CO.sub.2 R' or CONR'R", wherein R' and R" independently are C.sub.1-6 -alkyl, C.sub.3-7 -cycloalkyl or C.sub.1-6 -alkoxymethyl;--A-- is --C(.dbd.O)--NR'"--, --NR'"--C(.dbd.O)--, or ##STR3## wherein R'" is C.sub.1-6 -alkyl; X is C or N; andR.sup.4 is hydrogen, halogen, CN, C.sub.1-6 -alkyl, C.sub.1-6 -alkynyl, trimethylsilyl-C.sub.1-6 -alkynyl, aryloxy which may be substituted with halogen, aralkoxy, C.sub.3-7 -cycloalkoxy which may be substituted with one or more C.sub.1-6 -alkyl groups, or NR""R'"", wherein R"" and R""' independently are C.sub.1-6 -alkyl or together with the nitrogen atom form a 3-7 membered heterocyclic ring.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, and nootropics.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: February 20, 1990
    Assignee: A/S Ferrosan
    Inventors: Frank Watjen, Holger C. Hansen
  • Patent number: 4873244
    Abstract: New heterocyclic compounds having the general formula ##STR1## wherein ##STR2## CO.sub.2 R' or CONR'R", whereinR' and R" independently are C.sub.1-6 -alkyl, C.sub.3-7 -cycloalkyl or C.sub.1-6 -alkoxymethyl;--A-- is --C(.dbd.O)--NR'"--, --NR'"--C(.dbd.O)--, or ##STR3## wherein R'" is C.sub.1-6 -alkyl;X is C or N; andR.sup.4 is hydrogen, halogen, CN, C.sub.1-6 -alkyl, C.sub.1-6 -alkynyl, trimethylsilyl-C.sub.1-6 -alkynyl, aryloxy which may be substituted with halogen, aralkoxy, C.sub.3-7 -cycloalkoxy which may be substituted with one or more C.sub.1-6 -alkyl groups, or NR""R'"", wherein R"" and R'"" independently are C.sub.1-6 -alkoxy or together with the nitrogen atom form a 3-7 membered heterocyclic ring.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, and nootropics.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: October 10, 1989
    Assignee: A/S Ferrosan
    Inventors: WaFrank, Holger C. Hansen
  • Patent number: 4866065
    Abstract: New heterocyclic compounds having the general formula ##STR1## wherein ##STR2## wherein R' is C.sub.1-6 -alkyl, C.sub.3-7 -cycloalkyl or C.sub.1-6 -alkoxymethyl;R.sup.4 is C.sub.1-6 -alkyl;--S-- is ##STR3## and wherein R.sup.5 and R.sup.6 independently are hydrogen, C.sub.1-6 -alkyl, or aryl.The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics, and in improving the cognitive function of the brain of mammals.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: September 12, 1989
    Assignee: A/S Ferrosan
    Inventors: Frank Watjen, Holger C. Hansen