Patents by Inventor Anthony T. Ainsworth

Anthony T. Ainsworth 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: 5153210
    Abstract: A compound of the general formula (I): ##STR1## or a pharmaceutically acceptable ester thereof; or a pharmaceutically acceptable salt thereof, wherein,R.sup.o represents a substituted or unsubstituted aryl group or a substituted or unsubstituted benzofuranyl group,X represents a bond or --O--CH.sub.2 --,R.sup.1 represents a hydrogen atom or a moiety ##STR2## wherein R.sup.o and X are as defined above; R.sup.2 and R.sup.3 independently represent a hydrogen atom or an alkyl group,n represents an integer 1 or 2,Y represents a bond or a moiety --CH.sub.2 --O--, moiety A represents an aryl group,R.sup.4 represents a linking group, andR.sup.5 represents a substituted or unsubstituted, monocyclic or fused ring heterocyclic group, having up to four heteroatoms in each ring selected from, oxygen, nitrogen and sulphur; provided that R.sup.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: October 6, 1992
    Assignee: Beecham Group p.l.c.
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4753962
    Abstract: The compounds of the formula (II): ##STR1## and their pharmaceutically acceptable salts wherein R.sub.1 is a hydrogen, fluorine or chlorine atom or a hydroxyl, hydroxymethyl, methyl, methoxyl, amino, formamido, acetamido, methylsulphonylamido, nitro, benzyloxy, methylsulphonylmethyl, ureido, trifluoromethyl or p-methoxybenzylamino group; R.sub.2 is a hydrogen, fluorine or chlorine atom or a hydroxyl group; R.sub.3 is a hydrogen or chlorine atom or a hydroxyl group; R.sub.4 is a carboxylic acid group or a salt, ester or amide thereof; R.sub.5 is a hydrogen, chlorine or fluorine atom or a methyl, methoxyl or hydroxyl group or a carboxylic acid group or a salt, ester or amide thereof; R.sub.6 is a hydrogen atom or a methyl, or propyl group; X is an oxygen atom or a bond; and Y is an alkylene group of up to 6 carbon atoms or a bond have been found to possess anti-obesity and/or anti-hyperglycaemic activity.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: June 28, 1988
    Assignee: Beecham Group p.l.c.
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4654371
    Abstract: The compounds of the formula (II): ##STR1## and their pharmaceutically acceptable salts wherein R.sub.1 is a hydrogen, fluorine or chlorine atom or a hydroxyl, hydroxymethyl, methyl, methoxyl, amino, formamido, acetamido, methylsulphonylamido, nitro, benzyloxy, methylsulphonylmethyl, ureido, trifluoromethyl or p-methoxybenzylamino group; R.sub.2 is a hydrogen, fluorine or chlorine atom or a hydroxyl group; R.sub.3 is a hydrogen or chlorine atom or a hydroxyl group; R.sub.4 is a carboxylic acid group or a salt, ester or amide thereof; R.sub.5 is a hydrogen, chlorine or fluorine atom or a methyl, methoxyl or hydroxyl group or a carboxylic acid group or a salt, ester or amide thereof; R.sub.6 is a hydrogen atom or a methyl, or propyl group; X is an oxygen atom or a bond; and Y is an alkylene group of up to 6 carbon atoms or a bond have been found to possess anti-obesity and/or anti-hyperglycaemic activity.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: March 31, 1987
    Assignee: Beecham Group p.l.c.
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4596800
    Abstract: A compound of formula (I) ##STR1## or a pharmaceutically acceptable salt thereof, in which R.sup.1 is hydrogen, halogen, or trifluoromethyl;R.sup.2 is hydrogen or halogen;R.sup.3 is hydrogen or methyl;R.sup.4 is --O(CH.sub.2).sub.a CO.sub.2 H or an ester or amide derivative thereof, O(CH.sub.2).sub.b M or --CO.sub.2 H or an ester or amide derivative thereofwhereina is an integer from 1 to 6,b is an integer from 2 to 7, andM is hydroxy, C.sub.1-6 alkoxy or ##STR2## wherein R.sup.6 and R.sup.7 are each hydrogen or C.sub.1-6 alkyl or ##STR3## together form a five or six membered ring; R.sup.5 is C.sub.1-6 alkyl; C.sub.1-6 alkyl substituted by carboxy or esters and amides thereof; or phenyl optionally substituted by C.sub.1-6 alkyl, halogen, alkoxy or trifluoromethyl;R.sup.8 is hydrogen or C.sub.1-6 alkyl or R.sup.8 together withR.sup.5 form a carbocyclic ring; andn is 1 or 2.Processes for preparing these compounds and their use in therapy is also described.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: June 24, 1986
    Assignee: Beecham Group p.l.c.
    Inventors: Anthony T. Ainsworth, Richard M. Hindley
  • Patent number: 4478849
    Abstract: The compounds of the formula (II): ##STR1## and their pharmaceutically acceptable salts wherein R.sub.1 is a hydrogen, fluorine or chlorine atom or a hydroxyl, hydroxymethyl, methyl, methoxyl, amino, formamido, acetamido, methylsulphonylamido, nitro, benzyloxy, methylsulphonylmethyl, ureido, trifluoromethyl or p-methoxybenzylamino group; R.sub.2 is a hydrogen, fluorine or chlorine atom or a hydroxyl group; R.sub.3 is a hydrogen or chlorine atom or a hydroxyl group; R.sub.4 is a carboxylic acid group or a salt, ester or amide thereof; R.sub.5 is a hydrogen, chlorine or fluorine atom or a methyl, methoxyl or hydroxyl group or a carboxylic acid group or a salt, ester or amide thereof; R.sub.6 is a hydrogen atom or a methyl, or propyl group; X is an oxygen atom or a bond; and Y is an alkylene group of up to 6 carbon atoms or a bond have been found to possess anti-obesity and/or antihyperglycaemic activity.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: October 23, 1984
    Assignee: Beecham Group Limited
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4396627
    Abstract: Compounds having the formula: ##STR1## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, Y and X are as defined hereinbelow, are useful for the reduction of abnormally high blood glucose and lipid levels in the treatment of obesity or hyperglycaemia.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: August 2, 1983
    Assignee: Beecham Group Limited
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4385066
    Abstract: Compounds of formula (II): ##STR1## or a pharmaceutically acceptable salt, lower alkyl or aralkyl ester or amide thereof, wherein R.sup.1 and R.sup.2, which may be the same or different, are each of a hydrogen atom or a methyl group, n is 1, 2 or 3, and Z is a C.sub.1-6 alkyl or C.sub.1-6 alkoxy group, or a halogen or hydrogen atom are useful in treating obesity and/or hyperglycaemia and/or inflammation in mammals.
    Type: Grant
    Filed: May 13, 1981
    Date of Patent: May 24, 1983
    Assignee: Beecham Group Limited
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4338333
    Abstract: The compounds of formula (II): ##STR1## in which R.sub.1 is a hydrogen, fluorine, chlorine or bromine atom or a hydroxyl, hydroxymethyl, methyl, methoxyl, amino, formamido, acetamido, methylsulphonylamido, nitro, benzyloxy, methylsulphonylmethyl, ureido, trifluoromethyl or p-methoxybenzylamino group; R.sub.2 is a hydrogen, fluorine, chlorine or bromine atom or a hydroxyl group; R.sub.3 is a hydrogen, chlorine or bromine atom or a hydroxyl group, R.sub.4 is a hydrogen atom or a methyl group; R.sub.5 is a hydrogen atom or a methyl group; R.sub.6 is a hydrogen, fluorine or chlorine atom or a methyl, methoxyl or hydroxy group; X is an oxygen atom or a bond; Y is an alkylene group of up to 6 carbon atoms or a bond; and Z is an alkylene, alkenylene or alkynylene group of up to 10 carbon atoms, have been found to possess anti-obesity and/or anti-hyperglycaemic activity.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: July 6, 1982
    Assignee: Beecham Group Limited
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4329358
    Abstract: Compounds of formula (III): ##STR1## and esters, amides and pharmaceutically acceptable salts thereof, wherein A.sup.1 is hydrogen or methyl;A.sup.2 is hydrogen or methyl; andn is 1, 2 or 3have anti-obesity activity. Methods for their preparation pharmaceutical formulations of the compounds and their use in medicine are described.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: May 11, 1982
    Assignee: Beecham Group Limited
    Inventors: Anthony T. Ainsworth, David G. Smith
  • Patent number: 4309443
    Abstract: A compound of the formula (I): ##STR1## or a pharmaceutically acceptable ester, amide or salt thereof wherein R.sub.1 is a hydrogen, fluorine, chlorine or bromine atom or a hydroxyl, hydroxymethyl, methyl, methoxyl, amino, formamido, acetamido, methylsulphonylamido, nitro, benzyloxy, methylsulphonylmethyl, ureido, trifluoromethyl or p-methoxybenzylamino group; R.sub.2 is a hydrogen, fluorine, chlorine or bromine atom or a hydroxyl group; R.sub.3 is a hydrogen, chlorine or bromine atom or a hydroxyl group; R.sub.4 is a hydrogen, chlorine or fluorine atom or a methyl, methoxyl or hydroxyl group or a carboxylic acid group or a salt, ester or amide thereof; R.sub.5 is a hydrogen atom or a methyl group; R.sub.6 is a hydrogen atom or a methyl group; R.sub.7 is a hydrogen atom or a methyl or ethyl group; R.sub.
    Type: Grant
    Filed: September 3, 1980
    Date of Patent: January 5, 1982
    Assignee: Beecham Group Limited
    Inventors: David G. Smith, Anthony T. Ainsworth
  • Patent number: 4303656
    Abstract: A compound of the general formula (III), having anorexic activity: ##STR1## or a salt thereof, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and are each a hydrogen or halogen atom, or a trifluoromethyl, C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxy, hydroxyl, carboxyl, C.sub.1 to C.sub.4 alkoxycarbonyl, amino or acetamido group; R.sub.6 is a hydrogen atom or a C.sub.1 to C.sub.4 alkyl group; X is a straight or branched alkylene group of up to 4 carbon atoms; and R.sub.7 and R.sub.8 which may be the same or different are each a hydrogen atom or a C.sub.1 to C.sub.4 alkyl group, or R.sub.7 is joined to R.sub.8 so that NR.sub.7 R.sub.8 forms a 5-7 membered heterocyclic ring.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: December 1, 1981
    Assignee: Beecham Group Limited
    Inventors: John T. Sime, Anthony T. Ainsworth