Patents by Inventor Duncan R. Rae

Duncan R. Rae 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: 5286722
    Abstract: The invention relates to tetrahydropyridinyldibenzazepine derivatives of the formula I ##STR1## wherein R.sub.1 is a substituent selected from the group consisting of hydrogen, halogen, and lower alkyl;R.sub.2 is selected from hydrogen, and unsubstituted or hydroxy substituted lower alkyl or lower alkenyl;X is O, S, or CH.sub.2 ;Y is HC.dbd.CH or S;or a pharmaceutically acceptable salt thereof.These compounds are dopamine antagonists and are therefore useful for the treatment of psychotic disorders such as schizophrenia, schizophreniform disorder, delusional disorder, acute manic states, senile and presenile psychotic states, toxic psychoses, psychoactive-substance induced psychoses, symptoms of severe restlessness, hyperexcitability and anxiety, motor disorders, among which Tourette's disorder and Huntington's chorea, nausea and vomiting, hiccup and dizziness.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: February 15, 1994
    Assignee: Akzo N.V.
    Inventors: James Cairns, Samuel G. Gibson, Duncan R. Rae
  • Patent number: 5227394
    Abstract: The invention relates to pyrazole derivative having formula I ##STR1## whereinR.sub.1 is ##STR2## and R.sub.2 is hydrogen, or R.sub.1 iswherein n is 1 or 2 and R.sub.2 is hydrogen or halogen; and R.sub.3 is bromine or iodine; or a pharmaceutically acceptable salt thereof.The compounds of this invention have muscarinic properties and can be used for the treatment of cognition disorders, for analgesia, and afore the treatment of cholinergic deficiencies.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: July 13, 1993
    Assignee: Akzo N.V.
    Inventors: Ralf Plate, Duncan R. Rae
  • Patent number: 5128340
    Abstract: The invention relates to thiazole derivatives with the general formula I ##STR1## wherein R.sup.1 is halogen, CF.sub.3, CN, NO.sub.2, OH or C.sub.1 -C.sub.6 alkoxy;R.sup.2 is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, aryl, C.sub.6 -C.sub.13 aralkyl, an unsubstituted amino group, a substituted amino group, or an amino group which is part of a 5- or 6-membered ring;R.sup.3 is C.sub.1 -C.sub.6 hydrocarbon, C.sub.6 -C.sub.13 aralkyl, C.sub.2 -C.sub.7 alkoxyalkyl or C.sub.1 -C.sub.13 acyl; and their pharmaceutically acceptable acid addition salts.These new compounds have .alpha..sub.2 -antagonist activity without dopamine agonist activity and as such are specifically useful for the treatment of depression and other related illnesses, e.g. for treating patients with anxiety disorders and cognitive disturbances.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: July 7, 1992
    Assignee: Akzo N.V.
    Inventors: Duncan R. Rae, Samuel G. Gibson
  • Patent number: 5116856
    Abstract: The invention relates to aminoethylthiazole and aminoethyloxazole derivatives with the general formula I ##STR1## wherein X is O or S;ALK is a hydrocarbyl (C.sub.2 -C.sub.6) group;R.sup.1 is a substituted or unsubstituted aryl group;R.sup.2 is a hydrogen, a hydrocarbyl (C.sub.1 -C.sub.6) group or an aralkyl (C.sub.7 -C.sub.13) group;R.sup.3 is a substituted or unsubstituted amino group;or their pharmaceutically acceptable acid addition salts.These new compounds are dopamine agonists with selectively for pre-synaptic dopamine receptors and, as such, are useful as anti-psychotics in the treatment of schizophrenia. The compounds are also useful in the treatment of hypertension, Parkinsonism and for the conditions of hyperprolactineamia, e.g. galactorrhea, menstrual disorders and amenorrhea.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: May 26, 1992
    Assignee: Akzo N.V.
    Inventors: Duncan R. Rae, Samuel G. Gibson
  • Patent number: 4980354
    Abstract: The invention relates to tetrahydronaphthalene and indane derivatives with the general formula I: ##STR1## wherein R.sup.1 represents zero to four substituents, which may be the same or different and are selected from OH, halogen, NO.sub.2, CN, CF.sub.3, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and unsubstituted or C.sub.1 -C.sub.4 alkyl substituted amino;R.sup.2 represents C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkenyl and C.sub.1 -C.sub.4 alkynyl which may be substituted by halogen;R.sup.3 and R.sup.4 represent independently H, C.sub.1 -C.sub.4 alkyl or form together with the nitrogen atom a 5- or 6-membered ring;n has the value 0 or 1;ALK is an aliphatic hydrocarbon with 1-8 carbon atoms and their pharmaceutically acceptable salts.These new compounds are typical monoamine reuptake blockers with additional .alpha..sub.2 antagonist activity and show strong anti-depressant activity without being sedative.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: December 25, 1990
    Assignee: Akzo N.V.
    Inventors: James Cairns, Duncan R. Rae
  • Patent number: 4904676
    Abstract: The present invention relates to new amino-thiazole and amino-oxazole derivatives of the general formula: ##STR1## wherein: R represents hydrogen, a lower alkyl group with 1 to 4 carbon atoms, a lower alkenyl group, a phenyl-alkyl (1-4 C), furanyl-alkyl (1-4 C) or thienyl-alkyl (1.varies.4 C) group;X represents sulphur or oxygen;R.sub.1 and R.sub.2 represent hydrogen or alkyl (1-4 C), andthe dotted line represents an optional extra bond,as well as pharmaceutically acceptable acid addition salts thereof, having potent dopamine-agonist activity.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: February 27, 1990
    Assignee: Akzo N.V.
    Inventors: Duncan R. Rae, Samuel G. Gibson
  • Patent number: 4904688
    Abstract: The present invention deals with dibenzo-oxocin-, dibenzo-thiocin-, dibenzo-azocin- and dibenzocyclo-octenamine derivatives suitable for use as antipsychotic compounds without extra-pyrimidal side-effects.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: February 27, 1990
    Assignee: Akzo N.V.
    Inventors: Duncan R. Rae, James Cairns
  • Patent number: 4156694
    Abstract: The present invention relates to novel benzo(b) bicyclo[3.3.1]nones of the general formula I: ##STR1## and a salt or nitrogen oxide thereof, in which R.sub.1 and R.sub.2 stand for hydrogen, alkyl of 1-6 carbon atoms, alkenyl of 1-6 carbon atoms, an optionally substituted aralkyl group or an acyl group orR.sub.1 and R.sub.2 together with the nitrogen atom represent a heterocyclic 5- or 6-membered ringR.sub.3 is a free, etherified or esterified hydroxy,X and Y stand for hydrogen, hydroxy, halogen, alkyl or alkoxy of 1-6 C-atoms, nitro, CF.sub.3 or an acyloxy group, having valuable biological activities, particularly anorectic activity.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: May 29, 1979
    Assignee: Akzona Incorporated
    Inventors: Colin L. Hewett, David S. Savage, James Redpath, Thomas Sleigh, Duncan R. Rae
  • Patent number: RE34242
    Abstract: The present invention relates to new amino-thiazole and amino-oxazole derivatives of the general formula: ##STR1## wherein: R represents hydrogen, a lower alkyl group with 1 to 4 carbon atoms, a lower alkenyl group, a phenyl-alkyl (1-4 C), furanyl-alkyl (1-4 C) or thienyl-alkyl (1-4 C) group;X represents sulphur or oxygen;R.sub.1 and R.sub.2 represent hydrogen or alkyl (1-4 C), and the dotted line represents an optional extra bond,as well as pharmaceutically acceptable acid addition salts thereof, having potent dopamine-agonist activity.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: May 4, 1993
    Assignee: Akzo N.V.
    Inventors: Duncan R. Rae, Samuel G. Gibson