Patents by Inventor Ian A. Cliffe

Ian A. Cliffe 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: 5204470
    Abstract: Azabicyclic compounds of formula ##STR1## and their pharmaceutically acceptable acid addition salts are disclosed. In the formula, ##STR2## is an optionally substituted heteroaryl group containing at least one hetero atom X; n is 2, 3 or 4; m is 1 or 2; R.sup.1 is hydrogen, C.sub.1-6 alkyl, C.sub.3-5 -alkenyl, C.sub.3-6 cycloalkyl, C.sub.3-6 cycloalkyl-C.sub.1-2 alkyl or aryl- or heteroaryl-C.sub.1-2 -alkyl; and the --(CH.sub.2).sub.m ##STR3## moiety is ortho to the hetero atom X. The compounds exhibit activity as 5-HT.sub.3 -antagonists and can be used, inter alia, for the treatment of neuropsychiatric disorders.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: April 20, 1993
    Assignee: John Wyeth & Brother, Limited
    Inventor: Ian A. Cliffe
  • Patent number: 5194439
    Abstract: Pyridine derivatives of formula ##STR1## their heteroaromatic N-oxides and their pharmaceutically acceptable acid addition salts are disclosed. In the formula z is 0, 1 and 2; R is hydrogen, hydroxy, lower alkyl, lower alkoxy, halogen, trifluoromethyl, nitro, amino, (lower)alkylamino or di(lower)alkylamino; R.sup.1 is hydrogen or lower alkyl; R.sup.2 is --(CH.sub.2).sub.n --R.sup.3 or --CH.sub.2 --CH.dbd.CH--(CH.sub.2).sub.m --R.sup.3 or --CH.sub.2.C.tbd.C.(CH.sub.2).sub.m --R.sup.3 where n is 1 to 6, and m is 0 to 3; and R.sup.3 is a ring of formula ##STR2## The compounds exhibit activity as 5-HT.sub.1A agonists, antagonists or partial agonists and are used for the treatment of CNS disorders, e.g. anxiety, as antihypertensives and in treating anorexia.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: March 16, 1993
    Assignee: John Wyeth & Brother Limited
    Inventors: Ian A. Cliffe, Howard L. Mansell, Richard S. Todd, Alan C. White
  • Patent number: 5169845
    Abstract: Piperazine derivative of formula ##STR1## and the pharmaceutically acceptable acid addition salts, where A is an alkylene chain of 1 or 2 carbon atoms optionally substituted by one or more lower alkyl groups, m is 0, 1 or 2, R is hydrogen or lower alkyl, R.sup.1 is aryl or a mono- or bicyclic heteroaryl radical, R.sup.2 is hydrogen or lower alkyl, R.sup.3 is a heteroaryl radical, R.sup.4 is hydrogen, lower alkyl or aryl, and R.sup.5 is hydrogen, lower alkyl, cycloalkyl, cycloalkyl(lower)alkyl, aryl, or aryl(lower)alkyl or R.sup.4 and R.sup.5 together with the nitrogen atom to which they are both attached represent a saturated heterocyclic ring which may contain a further hetero atom are 5--HT.sub.1A -binding agents and may be used, for example, as anxiolytics.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: December 8, 1992
    Assignee: John Wyeth & Brother Limited
    Inventors: Ian A. Cliffe, Graham J. Warrellow
  • Patent number: 5164385
    Abstract: Azetidine derivatives of formula ##STR1## and their pharmaceutically acceptable acid addition salts are disclosed. In the formula R is hydrogen or one or more specified substituents. The compounds have hypotensive activity. Some are also 5-HT.sub.1A agonists.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: November 17, 1992
    Assignee: John Wyeth & Brother, Ltd.
    Inventors: Ian A. Cliffe, Alan C. White
  • Patent number: 5082843
    Abstract: Novel ethers of formula ##STR1## their heteroaromatic N-oxides, and the pharmaceutically acceptable acid additions of the compounds of formula (I) and their N-oxides possess 5-HT.sub.3 -antagonistic activity. In the formula ##STR2## represents an optionally substituted heteroaryl group containing a hetero atom X and -B represents a saturated azabicyclic ring such as quinuclidyl or tropanyl.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: January 21, 1992
    Assignee: John Wyeth and Brother Limited
    Inventor: Ian A. Cliffe
  • Patent number: 5075303
    Abstract: Pyridine derivatives of formula ##STR1## their heteroaromatic N-oxides and their pharmaceutically acceptable acid addition salts are disclosed. In the formula z is 0, 1 and 2 and R, R.sup.1, R.sup.2 and R.sup.2 have specified meanings. The compounds exhibit activity as 5-HT.sub.1A agonists, antagonists or partial agonists and are useful for the treatment of CNS disorders e.g. anxiety, as antihypertensives and in treating anorexia.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: December 24, 1991
    Assignee: John Wyeth & Brother Limited
    Inventors: Ian A. Cliffe, Howard L. Mansell, Richard S. Todd, Alan C. White
  • Patent number: 4997839
    Abstract: Novel ethers of formula ##STR1## their heteroaromatic N-oxides, and the pharmaceutically acceptable acid additions of the compounds of formula (I) and their N-oxides possess 5-HT.sub.3 -antagonistic activity. In the formula ##STR2## represents an optionally substituted heteroaryl group containing a hetero atom X and -B represents a saturated azabicyclic ring such as quinuclidyl or tropanyl.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: March 5, 1991
    Assignee: John Wyeth & Brother Limited
    Inventor: Ian A. Cliffe
  • Patent number: 4988814
    Abstract: Compounds of the formula: ##STR1## in which R.sup.1 is alkyl; R.sup.2 and R.sup.3 are alkyl or taken together they are polymethylene, R.sup.2 and R.sup.3 complete a 5-norbornen-2-yl moiety; X is --CO.sub.2 --, --OCO--, --OCO.sub.2 --, --N(R.sup.7)CO--, --NHNHCO--, --ON(R.sup.7)CO--, --CON(R.sup.7)--, --N(R.sup.7)CO.sub.2 --, --OCON(R.sup.7)-- or --N(R.sup.7)CON(R.sup.8)--, wherein R.sup.7 and R.sup.8 are, independently, hydrogen, alkyl, phenyl, benzyl, substituted phenyl or substituted benzyl in which the substituents are halo, alkyl alkoxy, cyano, nitro or perhalomethyl; R.sup.4 is hydrogen or alkyl; R.sup.5 is hydrogen, alkyl, hydroxyalkyl, phenyl, benzyl, substituted phenyl or substituted benzyl in which the substituents are hydroxy, halo, alkyl alkoxy, trifluoromethyl, nitro, cyano, carbalkoxy, carboxamido, amino, alkylamino or dialkylamino; R.sup.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: January 29, 1991
    Assignees: American Home Products Corp., John Wyeth & Bro.
    Inventors: Magid A. Abou-Gharbia, John P. Yardley, Ian A. Cliffe
  • Patent number: 4929625
    Abstract: Novel ethers of formula ##STR1## their heteroaromatic N-oxides, and the pharmaceutically acceptable acid additions of the compounds of formula (I) and their N-oxides possess 5-HT.sub.3 -antagonistic activity. In the formula ##STR2## represents an optionally substituted heteroaryl group containing a hetero atom X and --B represents a saturated azabicyclic ring such as quinuclidyl or tropanyl.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: May 29, 1990
    Assignee: John Wyeth and Brothers Limited
    Inventor: Ian A. Cliffe
  • Patent number: 4921860
    Abstract: Pyridyl ethers of formula ##STR1## [where R is hydrogen, or 1 to 4 hydroxy, alkyl, alkoxy, amino, alkylamino, dialkylamino, halogen, trifluoromethyl, phenyl, halophenyl, alkyphenyl, alkoxyphenyl, carboxy, carboxamide, nitro, thiol or alkylthio substituents and B is quinuclidyl or tyopanyl] are useful for the treatment of conditions which respond to antagonism of 5 - HT.sub.3 receptors e.g. the treatment of migraine, emesis, anxiety, gastro-intestinal disorders and psychotic disorders.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: May 1, 1990
    Assignee: John Wyeth and Brother, Limited
    Inventor: Ian A. Cliffe
  • Patent number: 4921958
    Abstract: The compounds of the formula: ##STR1## wherein Ad is 1-adamantyl, 2-adamantyl or 3-noradamantyl; n is 1,2,3,4 or 5; R.sup.1 hydrogen, alkyl, phenyl, benzyl, or substituted phenyl or benzyl in which the substituent is alkyl, alkoxy, halo, cyano, nitro or trifluoromethyl; R.sup.2 is phenyl, benzyl or substituted phenyl or benzyl in which the substituent is alkyl, alkoxy, halo, nitro, cyano or perhalomethyl, 2-, 3-, or 4-pyridinyl, 2-, 4- or 5-pyrimidinyl or 2- or 3-pyrazinyl; R.sup.3 and R.sup.4 are, independently, hydrogen, methyl, phenyl or benzyl; or a pharmaceutically acceptable salt thereof, are useful anxiolytic/antidepressant agents, with elements of antipsychotic activity.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: May 1, 1990
    Assignees: American Home Products Corporation, John Wyeth & Brother Limited
    Inventors: Magid A. Abou-Gharbia, John P. Yardley, Wayne E. Childers, Jr., Ian A. Cliffe
  • Patent number: 4803207
    Abstract: Pyrimidoindoles of formula (I) ##STR1## and their pharmaceutically acceptable acid addition salts, wherein R represents lower alkyl a mono- or bicyclic aryl radical or a group of mormula R.sup.3 O--B--[where R.sup.3 O is (lower)alkoxy,aryl(lower)alkoxy or hydroxy and B is a lower alkylene chain optionally containing one double or triple bond], R.sup.1 and R.sup.2 which may be the same or different each represent hydrogen, hydroxyl, lower alkyl, lower alkoxy, halo(lower)alkyl, halogen, amino or mono- or di(lower) alkylamino and A, together with the carbon atom to which it is attached, represents 5, 6 or 7 membered saturated carbocyclic or heterocyclic ring, are useful as hypoglyceamics.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: February 7, 1989
    Assignee: John Wyeth & Brother Ltd.
    Inventors: Alan C. White, Ian A. Cliffe, Richard S. Todd
  • Patent number: 4784996
    Abstract: Compounds of formula ##STR1## wherein A represents a lower alkylene chain optionally containing one double or triple bond, RO represents (lower)alkoxy, aryl(lower)alkoxy, hydroxy or protected hydroxy, R.sup.1 and R.sup.2 which may be the same or different each represent hydrogen, hydroxyl, lower alkyl, lower alkoxy, halo(lower)alkyl, halogen, amino or mono- or di(lower)alkylamino and R.sup.3 and R.sup.4 each independently represent hydrogen or lower alkyl and their pharmaceutically acceptable acid addition salts are useful as hypoglycaemics or as intermediates for hypoglycaemics.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: November 15, 1988
    Assignee: John Wyeth & Brother Ltd.
    Inventors: Alan C. White, Ian A. Cliffe, Richard S. Todd
  • Patent number: 4783455
    Abstract: Compounds of formula (I) ##STR1## and their pharmaceutically acceptable acid addition salts, wherein R represents lower alkyl or a mono- or bicyclic aryl or heteroaryl radical, R.sup.1 and R.sup.2 which may be the same or different each represent hydrogen, hydroxyl, lower alkyl, lower alkoxy, halo(lower)alkyl, halogen, amino or mono- or di(lower)alkylamino, X represents--CH.sub.2 CR.sup.3 R.sup.4 CH.sub.2 --or --(CH.sub.2).sub.4 --where R.sup.3 and R.sup.4 each independently represent hydrogen or lower alkyl or R.sup.3 and R.sup.4 together with the carbon atom to which they are attached represent a 5, 6 or 7 membered carbocyclic ring and R.sup.5 represents acyl and R.sup.6 represents hydrogen or R.sup.5 and R.sup.6 each independently represent hydrogen or lower alkyl, are useful as hypoglycaemics.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: November 8, 1988
    Assignee: John Wyeth and Brother Ltd.
    Inventor: Ian A. Cliffe
  • Patent number: 4760158
    Abstract: Novel 3-halo-2,2-disubstituted propanenitriles of formula ##STR1## wherein Z represents bromo or chloro and A, together with the carbon atom to which it is attached, represents a 5,6 or 7 membered saturated carbocyclic or heterocyclic ring, are useful as intermediates for preparing substituted pyrimido[1,2-a]indoles. The intermediates can be prepared by a novel process which comprises condensing a 2,2-disubstituted ethanenitrile with a dihalomethane in the presence of a non-nucleophilic strong base.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: July 26, 1988
    Assignee: John Wyeth & Brother Limited
    Inventors: Ian A. Cliffe, Richard S. Todd
  • Patent number: 4728658
    Abstract: Pyridine derivatives having the formula I ##STR1## and their pharmaceutically acceptable salts (where n is 0 or 1; R.sub.1 is hydrogen or lower alkyl and R.sub.2 is an aromatic group) exhibit anti-secretory activity and may be used as anti-secretory agents and/or as anti-ulcer agents.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: March 1, 1988
    Assignee: John Wyeth & Brother Limited
    Inventors: Roger Crossley, Ian A. Cliffe
  • Patent number: 4141446
    Abstract: A device for mounting a cassette box for storage and/or display purposes comprises a planar base part and a flap hingedly connected to the base part and extending within the periphery of the base part, the flap having at least one opening therein for engagement with a locating stud of the cassette box, the flap being dimensioned to be received and trapped in a cassette box with the opening therein engaged with the locating stud to mount the cassette box in the device.
    Type: Grant
    Filed: June 22, 1977
    Date of Patent: February 27, 1979
    Assignee: Garrod and Lofthouse Limited
    Inventor: Ian Cliffe