Patents by Inventor Angus M. MaCleod

Angus M. MaCleod 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: 5620989
    Abstract: The present invention is directed to compounds of the formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: April 15, 1997
    Assignee: Merck Sharp & Dohme Limited
    Inventors: Timothy Harrison, Angus M. MacLeod, Graeme I. Stevenson, Brian J. Williams
  • Patent number: 5612337
    Abstract: The present invention relates to compounds of formula (I), wherein R.sup.1 is hydrogen, halogen, C.sub.1-6 C alkyl, C.sub.1-6 alkoxy, CF.sub.3, NO.sub.2, CN, SR.sup.a, SOR.sup.a, SO.sub.2 R.sup.a, CO.sub.2 R.sup.a, CONR.sup.a R.sup.b, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl or C.sub.1-4 alkyl substituted by C.sub.1-4 alkoxy, where R.sup.a and R.sup.b are hydrogen or C.sub.1-4 alkyl; R.sup.2 is hydrogen, halogen, C .sub.1-6 alkyl, C.sub.1-6 alkoxy substituted by C.sub.1-4 alkoxy or CF.sub.3 ; R.sup.3 is hydrogen, halogen or CF.sub.3 ; R.sup.4 is selected from the definitions of R.sup.1 ; R.sup.5 is selected from the definitions of R.sup.2 ; R.sup.6 is a 5-membered or 6-membered heterocyclic ring containing 2 or 3 nitrogen atoms optionally substituted by .dbd.O, .dbd.S or a C.sub.1-4 alkyl group, and optionally substituted by an aminoalkyl group; R.sup.9a and R.sup.9b are hydrogen or C.sub.1-4 alkyl, or R.sup.9a and R.sup.9b are joined to form a C.sub.5-7 ring; X is C.sub.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: March 18, 1997
    Assignee: Merck Sharp & Dohme Limited
    Inventors: Raymond Baker, Timothy Harrison, Angus M. MacLeod, Andrew P. Owens, Eileen M. Seward, Christopher J. Swain, Martin R. Teall
  • Patent number: 5612336
    Abstract: Compounds of formula (I), and salts and prodrugs thereof, wherein Q.sup.1 is phenyl substituted by one or more halo; optionally substituted naphthyl, indolyl, benzothiophenyl, benzofuranyl, benzyl or fluorenyl; the dotted line represents an optional covalent bond; one of X and Y is H and the other is hydroxy or C.sub.1-6 alkoxy, or X and Y together form a group .dbd.O or .dbd.NOR.sup.5 where R.sup.5 is H or C.sub.1-6 alkyl; R.sup.1 is H or C.sub.1-6 alkyl. R.sup.2 is CO--W--R.sup.6 where W represents a bond or a hydrocarbon chain of 1-6 carbon atoms and R.sup.6 is an azacyclic or azabicyclic group; R.sup.3 is H, C.sub.1-6 alkyl or C.sub.2-6 alkenyl; and R.sup.4 is phenyl optionally substituted by 1-3 of C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, halo, cyano, nitro, trifluoromethyl, trimethylsilyl, OR.sup.a, SR.sup.a, SOR.sup.a, NR.sup.a R.sup.b, NR.sup.a COR.sup.b, NR.sup.a CO.sub.2 R.sup.b, CO.sub.2 R.sup.a or CONR.sup.a R.sup.b, where R.sup.a and R.sup.b are H, C.sub.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: March 18, 1997
    Assignee: Merck, Sharp & Dohme Ltd.
    Inventors: Richard J. Lewis, Angus M. MacLeod, Kevin J. Merchant
  • Patent number: 5612362
    Abstract: Compounds of formula (I) and salts and prodrugs wherein Q.sup.1 is a specified aryl group, the dotted line is an optional double bond, Z is O or NR.sup.3, R.sup.1 and R.sup.3 are H or specified optionally substituted alkyl or other substituents and R.sup.2 is an optionally substituted phenyl or group are tachykinin receptor antagonists useful in medicine.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: March 18, 1997
    Assignee: Merck Sharp & Dohme Ltd.
    Inventor: Angus M. MacLeod
  • Patent number: 5580877
    Abstract: A class of 3,5-dihydro-1H-pyrazolo[3,4-c]quinoline-1,4(2H)-dione derivatives, substituted in the 2-position by an optionally substituted phenyl moiety, are selective non-competitive antagonists of NMDA receptors and/or are antagonists of AMPA receptors, and are therefore of utility in the treatment and/or prevention of conditions, such as neurodegenerative disorders, convulsions or schizophrenia, which require the administration of an NMDA and/or AMPA antagonist.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: December 3, 1996
    Assignee: Merck Sharp & Dohme Ltd.
    Inventor: Angus M. MacLeod
  • Patent number: 5554627
    Abstract: Compounds of formula (I), wherein Q.sup.1 represents an aryl group; the dotted line represents an optional covalent bond; one of X and Y represents H and the other represents hydroxy or C.sub.1-6 alkoxy, or X and Y together form a group .dbd.O or .dbd.NOR.sup.5 where R.sup.5 is H or C.sub.1-6 alkyl; Z represents O, S or NR.sup.2, where R.sup.2 is H or C.sub.1-6 alkyl; W represents a bond or a saturated or unsaturated hydrocarbon chain of 1, 2, 3, 4, 5 or 6 carbon atoms; R.sup.1 represents H or C.sub.1-6 alkyl. R.sup.3 represents H, C.sub.1-6 alkyl or C.sub.2-6 alkenyl; R.sup.4 represents an optionally substituted phenyl group; and R.sup.6 represents a specified amino group or an optionally substituted aromatic or non-aromatic azacyclic or azabicyclic group; and salts and prodrugs are tachykinin receptor antagonists.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: September 10, 1996
    Assignee: Merck, Sharp & Dohme Ltd.
    Inventors: Richard T. Lewis, Angus M. MacLeod, Kevin J. Merchant
  • Patent number: 5519163
    Abstract: Novel .alpha.-hydroxyphosphonate compounds which inhibit mammalian phosphoinositide-specific phospholipase-C. The compounds are potent anti-inflammatory and analgesic agents and may be useful for the treatment of cancer.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: May 21, 1996
    Assignee: Merck & Co., Inc.
    Inventors: Jackson B. Gibbs, Kenneth S. Koblan, Angus M. MacLeod, Kevin J. Merchant
  • Patent number: 5514718
    Abstract: Compounds of formula (I), and salts and prodrugs thereof ##STR1## wherein Q.sup.1 is halo substituted phenyl; naphthyl; indolyl; benzthiophenyl; benzofuranyl; benzyl; or fluorenyl;. . is an optional covalent bond;one of X and Y is H and the other is hydroxy or C.sub.1-6 alkoxy, or X and Y are together .dbd.O or .dbd.NOR.sup.5 ;R.sup.1 and R.sup.2 are H; C.sub.1-6 alkyl optionally substituted by hydroxy, cyano, COR.sup.c, CO.sub.2 R.sup.c, CONR.sup.c R.sup.d, or NR.sup.c R.sup.d (where R.sup.c and R.sup.d are H, C.sub.1-6 alkyl or phenyl(C.sub.0-4 alkyl) optionally substituted by C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halo and trifluoromethyl); phenyl(C.sub.1-4 alkyl) (optionally substituted by C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halo or trifluoromethyl); COR.sup.c ; CO.sub.2 R.sup.c ; CONR.sup.c R.sup.d ; COC.sub.1-6 alkylNR.sup.c R.sup.d ; CONR.sup.c COOR.sup.d ; or SO.sub.2 R.sup.c ;R.sup.3 is H, C.sub.1-6 alkyl or C.sub.2-6 alkenyl; andR.sup.4 is phenyl optionally substituted by C.sub.1-6 alkyl, C.sub.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: May 7, 1996
    Assignee: Merck, Sharp & Dohme Limited
    Inventors: Richard T. Lewis, Kevin J. Merchant, Angus M. MacLeod
  • Patent number: 5472978
    Abstract: Compounds of formula (I), and salts and prodrugs thereof, wherein Q represents optionally substituted phenyl, naphthyl, indolyl, benzothiophenyl, benzofuranyl, benzyl or indazolyl; Z represents O, S or NR.sup.8 ; X and Y are H or are together .dbd.O; R.sup.1 and R.sup.2 are H; optionally substituted C.sub.1-6 alkyl; optionally substituted phenyl(C.sub.1-4 alkyl); COR.sup.c ; CO.sub.2 R.sup.c ; CONR.sup.c R.sup.d ; CONR.sup.c COOR.sup.d ; or SO.sub.2 R.sup.c ; R.sup.3 is H or C.sub.1-6 alkyl, R.sup.4 is H , C.sub.1-6 alkyl or optionally substituted phenyl; and R.sup.5 represents optionally substituted phenyl; are tachykinin antagonists. They and compositions thereof are useful in therapy.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: December 5, 1995
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: Raymond Baker, Angus M. MacLeod, Kevin J. Merchant, Christopher J. Swain
  • Patent number: 5405853
    Abstract: A class of novel thiadiazoles, substituted on one of the ring carbon atoms with a non-aromatic azacyclic or azabicyclic ring system, and substituted on the other ring carbon atom with a substituent of low lipophilicity, or a hydrocarbon substituent; are potent muscarinic agonists, and have good CNS penetrability. The compounds are therefore useful in the treatment of neurological and mental illnesses, and are also of benefit in the treatment of severe painful conditions.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: April 11, 1995
    Assignee: Merck Sharpe & Dohme Ltd.
    Inventors: Raymond Baker, Angus M. MacLeod, John Saunders, Kevin Merchant
  • Patent number: 5334606
    Abstract: Compounds of formula (I): ##STR1## wherein Q.sup.1 represents a phenyl group substituted by one or more halo; naphthyl; indolyl; benzthiophenyl; benzofuranyl; benzyl; or fluorenyl;R.sup.1 is H, C.sub.1-6 alkyl or C.sub.2-6 alkenyl;R.sup.2 is phenyl(C.sub.1-4 alkyl) optionally substituted in the phenyl ring by one or more groups selected from C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, halo, cyano, nitro, trifluoromethyl, SR.sup.b, SOR.sup.b, SO.sub.2 R.sup.b, OR.sup.b, NR.sup.b R.sup.c, NR.sup.b COR.sup.c, NR.sup.b COOR.sup.c, COOR.sup.b or CONR.sup.b R.sup.c, where R.sup.b and R.sup.c independently represent H, C.sub.1-6 alkyl, phenyl or trifluoromethyl; andZ is O, S, NR.sup.8 or CR.sup.9 R.sup.10, where R.sup.8 represents H C.sub.1-6 alkyl, phenyl, phenyl(C.sub.1-4 alkyl), COR.sup.11, COOR.sup.11, CONR.sup.9 R.sup.10 where R.sup.11 is phenyl, phenyl(C.sub.1-4 alkyl) or C.sub.1-6 alkyl, and R.sup.9 and R.sup.10 are each H, C.sub.1-6 alkyl, phenyl or phenyl(C.sub.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: August 2, 1994
    Assignee: Merck Sharpe & Dohme Ltd.
    Inventor: Angus M. MacLeod
  • Patent number: 5328927
    Abstract: Compounds of formula (I), and salts and prodrugs thereof ##STR1## wherein Q.sup.1 is halo substituted phenyl; naphthyl; indolyl; benzthiophenyl; benzofuranyl; benzyl; or fluorenyl;. . is an optional covalent bond;one of X and Y is H and the other is hydroxy or C.sub.1-6 alkoxy, or X and Y are together .dbd.0 or .dbd.NOR.sup.5 ;R.sup.1 and R.sup.2 are H; C.sub.1-6 alkyl optionally substituted by hydroxy, cyano, COR.sup.c, CO.sub.2 R.sup.c, CONR.sup.c R.sup.d, or NR.sup.c R.sup.d (where R.sup.c and R.sup.d are H, C.sub.1-6 alkyl or phenyl(C.sub.0-4 alkyl) optionally substituted by C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halo and trifluoromethyl); phenyl(C.sub.1-4 alkyl) (optionally substituted by C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halo or trifluoromethyl); COR.sup.c ; CO.sub.2 R.sup.c ; CONR.sup.c R.sup.d ; COC.sub.1-6 alkylNR.sup.c R.sup.d ; CONR.sup.c COOR.sup.d ; or SO.sub.2 R.sup.c ;R.sup.3 is H, C.sub.1-6 alkyl or C.sub.2-6 alkenyl; andR.sup.4 is phenyl optionally substituted by C.sub.1-6 alkyl, C.sub.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: July 12, 1994
    Assignee: Merck Sharpe & Dohme, Ltd.
    Inventors: Richard T. Lewis, Kevin J. Merchant, Angus M. MacLeod
  • Patent number: 5242927
    Abstract: A class of novel oxadiazoles, substituted on one of the ring carbon atoms with a non-aromatic azacyclic or azabicyclic ring and on the other ring carbon atom with a substituent which is convertible in vivo to an amino group, are potent muscarinic agonists, and exhibit improved CNS penetrability and duration of action compared with the corresponding amino compounds. The compounds are therefore useful in the treatment of neurological and mental illnesses.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: September 7, 1993
    Assignee: Merck Sharp & Dohme Limited
    Inventors: Raymond Baker, John Saunders, Angus M. MaCleod, Graham A. Showell