Patents by Inventor Alexander R. MacKenzie

Alexander R. MacKenzie 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: 5607950
    Abstract: The invetion is a method of treating irritable bowel syndrome with a compound selected from the formula ##STR1## wherein R, R.sup.1, m, n p are as defined in the specification, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: March 4, 1997
    Assignee: Pfizer Inc.
    Inventors: David Alker, Peter E. Cross, Alexander R. Mackenzie
  • Patent number: 5422358
    Abstract: Compounds of the formula ##STR1## and the pharmaceutically acceptable salts thereof, wherein: Y is a direct link, --CH.sub.2 --, --(CH.sub.2).sub.2 --, --CH.sub.2 O-- or --CH.sub.2 S--; R is --CN or --CONH.sub.2 ; and R.sup.1 is ##STR2## where X and X.sup.1 are each independently O or CH.sub.2 ; and m is 1, 2 or 3, are muscarinic receptor antagonists useful in the treatment of diseases and conditions associated with the altered motility and/or tone of smooth muscle, such as irritable bowel syndrome.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: June 6, 1995
    Assignee: Pfizer Inc
    Inventors: Peter E. Cross, Alexander R. Mackenzie
  • Patent number: 5340831
    Abstract: Muscarinic receptor antagonists of formula (I), and their pharmaceutically acceptable salts, wherein Y is --CH.sub.2 --, --(CH.sub.2).sub.2 --, --CH.sub.2 O--, --(CH.sub.2).sub.2 O-- or --CH.sub.2 S--; R is --CH or --CONH.sub.2 ; and R.sup.1 is a group of formula (a), where R.sup.2 and R.sup.3 are each independently H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, --(CH.sub.2).sub.n OH, halo, trifluoromethyl, cyano, --(CH.sub.2).sub.n NR.sup.4 R.sup.5, --CO(C.sub.1 -C.sub.4 alkyl), --OCO(C.sub.1 -C.sub.4 alkyl), --CH(OH)(C.sub.1 -C.sub.4 alkyl), --C(OH)(C.sub.1 -C.sub.4 alkyl.sub.2, --SO.sub.2 NH.sub.2, --(CH.sub.2).sub.n CONR.sup.6 R.sup.7 or --(CH.sub.2).sub.n COO(C.sub.1 -C.sub.4 alkyl); R.sup.4 is H or C.sub.1 -C.sub.4 alkyl; R.sup.5 is H, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkysulphonyl; R.sup.6 and R.sup.7 are each independently H or C.sub.1 -C.sub.4 alkyl; and n is 0, 1 or 2. The compounds are particularly useful in treating irritable bowel syndrome.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: August 23, 1994
    Assignee: Pfizer Inc.
    Inventors: Peter E. Cross, Alexander R. MacKenzie
  • Patent number: 5302595
    Abstract: Compounds of the formula I ##STR1## wherein X, Y and v are as defined below, novel intermediates used in their synthesis, and the pharmaceutically acceptable salts of such compounds and intermediates. The compounds of formula I and the novel intermediates used in their synthesis are muscarinic receptor antagonists that are selected for smooth muscle muscarinic sites and are useful in the prevention and treatment of diseases associated with altered motility or tone of smooth muscle, such as irritable bowel syndrome, diverticular disease, urinary incontinence, aesophageal achalasia, and chronic obstructive airways disease.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: April 12, 1994
    Assignee: Pfizer Inc.
    Inventors: Peter E. Cross, Alexander R. MacKenzie
  • Patent number: 5300516
    Abstract: Musacarinic receptor antagonists, particularly useful in the treatment of irritable bowel syndrome, of formula (I), or a pharmaceutically acceptable salt thereof, where m is 1 or 2; R.sup.1 and R.sup.2 are each independently H or C.sub.1 -C.sub.4 alkyl or together represent --(CH.sub.2).sub.p -- where p is an integer of from 2 to 5; R.sup.3 is H or C.sub.1 -C.sub.4 alkyl; wherein Z is a direct link; --CH.sub.2 --, --CH.sub.2 O-- or --CH.sub.2 S--; and R.sup.4 is a group of formulae (II), (III), (IV) or Het, where R.sup.5 and R.sup.6 are each independently H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, --(CH.sub.2).sub.n OH, halo, trifluoromethyl, cyano, --(CH.sub.2).sub.n NR.sup.7 R.sup.8, --CO(C.sub.1 -C.sub.4 alkyl), --OCO(C.sub.1 -C.sub.4 alkyl), --CH(OH)(C.sub.1 -C.sub.4 alkyl), --C(OH)(C.sub.1 -C.sub.4 alkyl).sub.2, --SO.sub.2 NH.sub.2 , (CH.sub.2).sub.n CONR.sup.7 R.sup.8 or --(CH.sub.2).sub.n COO(C.sub.1 -C.sub.4 alkyl); R.sup.7 and R.sup.8 are each independently H or C.sub.1 -C.sub.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: April 5, 1994
    Assignee: Pfizer Inc.
    Inventors: Alexander R. Mackenzie, Peter E. Cross
  • Patent number: 5281601
    Abstract: A series of novel 3-phenyl-3-[1-(cyclicalkyl)pyrrolidin-3-yl]glutarimide derivatives have been prepared, including their pharmaceutically acceptable salts. The cyclic moiety present in these compounds is derived from either benzene or a heteroaryl such as benzofuran or 2,3-dihydrobenzofuran, or it is derived from an aromatic heterocyclic such as pyridine, pyrazine or thiophene, and it is attached to the adjacent alkyl group of the molecule by means of one of the available ring carbon atoms situated in the aromatic ring of the aforementioned cyclic ring moiety. These particular compounds are useful in therapy as selective muscarinic receptor antagonists, which are selective for smooth muscle muscarinic sites over cardiac muscarinic sites and therefore, are of value in the treatment of diseases associated with altered motility and/or smooth muscle tone as found in the gut, trachea and bladder. Methods for preparing these compounds from known starting materials are provided.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: January 25, 1994
    Assignee: Pfizer Inc.
    Inventors: Peter E. Cross, Alexander R. Mackenzie
  • Patent number: 5233053
    Abstract: Compounds of the formula ##STR1## wherein R, Y and R.sup.1 are as defined in the specification. These compounds are muscarinic receptor antagonists which are selective for smooth muscle muscarinic sites over cardiac muscarinic sites, and are useful in the treatment of diseases associated with altered motility on tone of smooth muscle, including irritable bowel syndrome, diverticular disease, urinary incontinence, oesophageal achalasia and chronic obstructive airways disease.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: August 3, 1993
    Assignee: Pfizer Inc.
    Inventors: Peter E. Cross, Alexander R. MacKenzie
  • Patent number: 5219871
    Abstract: Compounds of the formula I ##STR1## wherein X, Y and v are as defined below, novel intermediates used in their synthesis, and the pharmaceutically acceptable salts of such compounds and intermediates. The compounds of formula I and the novel intermediates used in their synthesis are muscarinic receptor antagonists that are selected for smooth muscle muscarinic sites and are useful in the prevention and treatment of diseases associated with altered motility or tone of smooth muscle, such as irritable bowel syndrome, diverticular disease, urinary incontinence, aesophageal achalasia, and chronic obstructive airways disease.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: June 15, 1993
    Assignee: Pfizer Inc.
    Inventors: Peter E. Cross, Alexander R. MacKenzie
  • Patent number: 5096890
    Abstract: Compounds of the formula ##STR1## wherein R, Y and R.sup.1 are as defined in the specification. These compounds are muscarinic receptor antagonists which are selective for smooth muscle muscarinic sites over cardiac muscarinic sites, and are useful in the treatment of diseases associated with altered motility on tone of smooth muscle, including irritable bowel syndrome, diverticular disease, urinary incontinence, oesophageal achalasia and chronic obstructive airways disease.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: March 17, 1992
    Assignee: Pfizer Inc.
    Inventors: Peter E. Cross, Alexander R. MacKenzie