Patents by Inventor Albert Opalko

Albert Opalko 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: 5965696
    Abstract: This invention concerns peptides (I) having intracellular potassium channel modulating activity comprising the amino acid sequence shown in SEQ ID No: 2:(N terminal function) (I) Met Ile Ser Ser Val Cys Val Ser Ser 1 5} Tyr Arg Gly Arg Lys Ser Gly Asn Lys 10 15 Pro Pro Ser Lys Thr Cys Leu Lys Glu Glu 20 25 (C terminal function)in which the cysteines are optionally linked via a disulphide bridge and wherein ______________________________________ Met represents L-methionine Ile represents L-isoleucine Ser represents L-serine Val represents L-valine Cys represents L-cysteine Tyr represents L-tyrosine Arg represents L-arginine Gly represents glycine Lys represents L-lysine Asn represents L-asparagine Pro represents L-proline Thr represents L-threonine Leu represents L-leucine Glu represents L-glutamic acid ______________________________________or a variant thereof,with the proviso that excluded is the 13-Lys variant (where 13-Arg is replaced by 13-Lys) in which the cysteines are not linked via a disulphide bridge
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: October 12, 1999
    Assignee: John Wyeth & Brother, Ltd.
    Inventors: Roger Crossley, Albert Opalko, David Geraint Owen, Brian Robertson
  • Patent number: 5821251
    Abstract: This invention concerns a compounds of generic formula: ##STR1## or a pharmaceutically acceptable salt thereof, where the dotted lines represent optional bonds with the nitrogen ring optional bonds being between one adjacent pair on ring atoms,R.sup.3 is an optionally substituted C.sub.6 -C.sub.10 aryl or heteroaryl group; said aryl or heteroaryl radicals being optionally substituted by one or more substituents the same or different,R.sup.4 represents hydrogen, or a group of formula --CR.sup.a R.sup.b R.sup.c where R.sup.a, R.sup.b and R.sup.c are independently selected from hydrogen, C.sub.1 -C.sub.6 alkyl, optionally substituted C.sub.6 -C.sub.10 aryl, optionally substituted heteroaryl, C.sub.1 -C.sub.6 alkyl substituted by optionally substituted C.sub.6 -C.sub.10 aryl or heteroaryl,R' represents one or more optional substituents the same or different, selected from one or more of the following: halogen, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.7 alkoxycarbonyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: October 13, 1998
    Assignee: John Wyeth & Brother Limited
    Inventors: Roger Crossley, Albert Opalko, Peter Jonathan Meade, Barry John Langham
  • Patent number: 5753676
    Abstract: This invention concerns a compound of generic formula: ##STR1## or a pharmaceutically acceptable salt thereof, where the dotted lines represent optional bonds,R.sup.3 is an optionally substituted C.sub.6 -C.sub.10 aryl or heteroaryl group; optionally substituted by one or more substituents the same or different,R' represents one or more optional substituents the same or different, selected from the following: halogen, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.7 alkoxycarbonyl, C.sub.1 -C.sub.6 hydroxyalkyl, CN, aminocarbonyl, C.sub.2 -C.sub.7 alkanoyloxy(C.sub.1 -C.sub.6 )alkyl, carboxy, C.sub.2 -C.sub.7 alkanoxylamino, optionally substituted C.sub.6 -C.sub.10 or heteroaryl or an optionally substituted (C.sub.6 -C.sub.10 aryl)alkyl or a heteroaryl alkyl radical; andR" represents one or more optional mono- or di- valent substituents in the 5, 7 or 8 positions the same or different: monovalent substituents being selected from the following: C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.7 alkanoyloxy, hydroxy, amino, C.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: May 19, 1998
    Inventors: Roger Crossley, Albert Opalko, Peter Jonathan Meade, Anderson Decourtney Ifill, Brian John Bushell
  • Patent number: 5708026
    Abstract: This invention concerns compounds of generic formula: ##STR1## or a pharmaceutically acceptable salt thereof, where the dotted line represents an optional bond,one of R.sup.1 and R.sup.5 represents hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, --(CHR.sup.6).sub.n CHR.sup.7 CN, --(CHR.sup.6).sub.n CHR.sup.7 CONH.sub.2, --(CHR.sup.6).sub.n CHR.sup.7 COOR.sup.8, --(CHR.sup.6).sub.n CHR.sup.7 CH.sub.2 OH wherein n is 0 or 1, R.sup.6 and R.sup.7 independently represent hydrogen, C.sub.1 -C.sub.6 alkyl- or C.sub.7 -C.sub.16 aralkyl-, and R.sup.7 also represents hydroxy(C.sub.1 -C.sub.6)alkyl-, (C.sub.2 -C.sub.7)alkanoyloxy(C.sub.1 -C.sub.6)alkyl-, (C.sub.1 -C.sub.6 alkoxy)carbonyl- and R.sup.8 is hydrogen or C.sub.1 -C.sub.6 alkyl;the other of R.sup.1 and R.sup.5 is hydrogen, C.sub.1 -C.sub.6 alkyl or C.sub.7 -C.sub.16 aralkyl; R.sup.3 is C.sub.6 -C.sub.10 aryl or heteroaryl group optionally substituted by one or more substituents the same or differnet,R.sup.2 and R.sup.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: January 13, 1998
    Assignee: John Wyeth & Brother
    Inventors: Roger Crossley, Albert Opalko
  • Patent number: 5681839
    Abstract: This invention concerns a compound of generic formula ##STR1## or a pharmaceutically acceptable salt thereof, where the dotted lines represent optional bonds,R.sup.3 is an optionally substituted C.sub.6 -C.sub.10 aryl or heteroaryl group;R.sup.4 represents hydrogen, or a group of formula --CR.sup.a R.sup.b R.sup.c where R.sup.a, R.sup.b and R.sup.c are independently selected from hydrogen, C.sub.1 -C.sub.6 alkyl C.sub.6 -C.sub.10 aryl, heteroaryl, C.sub.1 -C.sub.6 alkyl substituted by optionally substituted C.sub.6 -C.sub.10 aryl or heteroaryl;R' represents one or more optional substituents the same or different, selected from halogen, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.7 alkoxycarbonyl, C.sub.1 -C.sub.6 hydroxyalkyl, CN, aminocarbonyl, C.sub.2 -C.sub.7 alkanoyloxy(C.sub.1 -C.sub.6)alkyl, carboxy, C.sub.2 -C.sub.7 alkanoxylamino, C.sub.6 -C.sub.10 or heteroaryl or an (C.sub.6 -C.sub.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: October 28, 1997
    Assignee: John Wyeth & Brother
    Inventors: Roger Crossley, Albert Opalko, Barry John Langham
  • Patent number: 5604238
    Abstract: This invention concerns compounds having the Z-configuration of formula: ##STR1## or salts thereof, wherein R represents an optionally substituted aryl or heteroaryl radical, R.sup.1, R.sup.2 and R.sup.3 each independently represent hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, (C.sub.1 -C.sub.6 alkoxy)carbonyl, carboxy, hydroxy (C.sub.1 -C.sub.6)alkyl, halogen, halo(C.sub.1 -C.sub.6)alkyl, carboxy(C.sub.1 -C.sub.6)alkyl, optionally substituted aryl or heteroaryl or optionally substituted aralkyl or heteroarylalkyl; n represents 0, 1 or 2; R.sup.4 and R.sup.5 each independently represent hydrogen or a substituent selected from lower alkyl, optionally substituted aryl and optionally substituted aralkyl or R.sup.4 and R.sup.5 are geminal C.sub.1 -C.sub.6 alkyl substituents and R.sup.6 is hydrogen or C.sub.1 -C.sub.6 alkyl which possess antiinflammatory activity.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: February 18, 1997
    Assignee: John Wyeth & Brothers Limited
    Inventors: Roger Crossley, Albert Opalko
  • Patent number: 5597834
    Abstract: This invention concerns compounds having the Z-configuration of formula: ##STR1## or salts thereof, wherein R represents an optionally substituted aryl or heteroaryl radical, R.sup.1, R.sup.2 and R.sup.3 each independently represent hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, (C.sub.1 -C.sub.6 alkoxy)carbonyl, carboxy, hydroxy (C.sub.1 -C.sub.6)alkyl, halogen, halo(C.sub.1 -C.sub.6)alkyl, carboxy(C.sub.1 -C.sub.6)alkyl, optionally substituted aryl or heteroaryl or optionally substituted aralkyl or heteroarylalkyl; n represents O, 1 or 2; R.sup.4 and R.sup.5 each independently represent hydrogen or a substituent selected from lower alkyl, optionally substituted aryl and optionally substituted aralkyl or R.sup.4 and R.sup.5 are geminal C.sub.1 -C.sub.6 alkyl substituents and R.sup.6 is hydrogen or C.sub.1 -C.sub.6 alkyl which possess antiinflammatory activity.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: January 28, 1997
    Assignee: American Home Products Corporation
    Inventors: Roger Crossley, Albert Opalko
  • Patent number: 5112832
    Abstract: The invention concerns compounds of formula I ##STR1## or a salt thereof, wherein R.sup.1 and R.sup.2 each independently represent hydrogen, lower alkyl, lower alkoxy, carboxyloweralkyl, carboxy, hydroxyloweralkyl, halogen, haloloweralkyl, lower alkoxycarbonyl, optionally substituted aryl or optionally substituted aralkyl, n represents an integer from 3 to 6; R.sup.3 represents hydrogen or single or multiple substitution on one or more of the aliphatic carbons by one or more substituents selected from lower alkyl, optionally substituted aryl and optionally substituted aralkyl; A represents a group of formula (i) or (ii) below:--CR.sup.4 R.sup.5 --(CR.sup.6 R.sup.7).sub.m -- (i)--CX--(CR.sup.6 R.sup.7).sub.m -- (ii)in which R.sup.4, R.sup.6 and R.sup.7 each independently represent hydrogen or lower alkyl (providing that when R.sup.5 is NH.sub.2, R.sup.0 is hydrogen); m is 0 or 1; R.sup.5 represents hydrogen, NH.sub.2, OH or loweralkoxy, and X is .dbd.O, .dbd.NH or .dbd.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: May 12, 1992
    Assignee: John Wyeth & Brother Limited
    Inventors: Roger Crossley, Albert Opalko, Robin G. Shepherd
  • Patent number: 5068337
    Abstract: The invention concerns compounds of formula ##STR1## or salts thereof; wherein Ar is an optionally substituted aryl radical;R represents hydrogen or an optionally substituted alkyl or aralkyl group;R.sup.1 and R.sup.2 are the same or different and are selected from hydrogen and saturated or unsaturated, cyclic or acyclic aliphatic hydrocarbon residues optionally substituted by one or more groups selected from halogen, OH, carboxy, CN, alkoxy, alkylthio, aryloxy, alkoxycarbonyl, amino, substituted amino, and optionally substituted aryl;A represents a group of formula --XR.sup.3 whereinX is (i) a group of formula --(CHR.sup.6).sub.p --Y--(CHR.sup.7).sub.q --or (ii) a group of formula --(CHR.sup.6).sub.r --O--(CHR.sup.7).sub.qin which formulae: Y represents --S--, NR.sup.8 or a direct bond, p and q each represent 0, 1 or 2 providing that p and q do not both represent 0, 1 or 2 and the other is zero; R.sup.6, R.sup.7 and R.sup.8 independently represent hydrogen or lower alkyl, and R.sup.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: November 26, 1991
    Assignee: John Wyeth & Brother Limited
    Inventors: John L. Archibald, Terence J. Ward, Albert Opalko
  • Patent number: 5064842
    Abstract: The invention concerns compounds of formula ##STR1## or salts thereof; wherein:.alpha. and .beta. together represent a bond and additionally when B is an electron withdrawing group .alpha. can also represent OH and .beta. can represent hydrogen;Ar is an optionally substituted aryl or heteroaryl radical;R represents hydrogen or an optionally substituted alkyl or aralkyl group;R.sup.1 and R.sup.2 are the same or different and are selected from hydrogen and saturated or unsaturated, cyclic or acyclic aliphatic hydrocarbon residues optionally substituted by one or more groups selected from halogen, OH, carboxy, CN, alkoxy, alkylthio, aryloxy, alkoxycarbonyl, amino, substituted amino, and optioanlly substituted aryl or heteroaryl;A represents a group of formula --XR.sup.3 wherein X is a group of formula --(CHR.sup.6).sub.p --Y--(CHR.sup.7).sub.q -- in which formula: Y represents --O--, --S--, NR.sup.8 or a direct bond, p and q each represent 0, 1 or 2 R.sup.6, R.sup.7 and R.sup.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: November 12, 1991
    Assignee: John Wyeth & Brother Limited
    Inventors: John L. Archibald, Terence J. Ward, Albert Opalko
  • Patent number: 5001131
    Abstract: The invention provides a method of relieving inflammation in a mammal inflicted with an imflammatory disease which method comprises treating said mammal with a therapeutically effective amount of a compound of formula I ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 represent hydrogen, loweralkyl, cycloloweralkyl, loweralkoxy, carboxy, hydroxyloweralkyl, halogen, haloloweralkyl, loweralkoxycarbonyl, aryl or aralkyl or 7-12 carbon atoms, or R.sup.1 and R.sup.2 taken together, or R.sup.2 and R.sup.3 taken together form a5,6, or 7 membered ring with the carbon atoms to which they are attached, which ring may be saturated or unsaturated and unsubstituted or substituted by loweralkyl or loweralkoxy, R.sup.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: March 19, 1991
    Assignee: John Wyeth & Brother Limited
    Inventors: Roger Crossley, Albert Opalko
  • Patent number: 4983617
    Abstract: The invention concerns a new stable crystal form of anhydrous, crystalline 1,4-dihydro-2-(imidazol-1-ylmethyl)-6-methyl-4-(3-nitrophenyl)pyridine)-3, 5-dicarboxylic acid 3-ethyl 5-methyl diester hydrochloride, "having a melting point greater than about 215.degree. C., an infra red spectrum (nujolmull) having sharp peaks at 3195 cm.sup.-1, 3100 cm.sup.-1, 2735 cm.sup.-1 and 2625 cm.sup.-1 and an x-ray powder diffraction pattern with specific peaks occurring at 2.theta.=12.3.degree. and 44.5.degree..
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: January 8, 1991
    Assignee: John Wyeth and Brothers Limited
    Inventors: Gerald Bradley, Geoffrey P. R. Carr, Albert Opalko, Richard J. Yarwood
  • Patent number: 4975431
    Abstract: The invention concerns compounds of formula I ##STR1## or a salt thereof, wherein R.sup.1 and R.sup.2 each independently represent hydrogen, lower alkyl, lower alkoxy, carboxyloweralkyl, carboxy, hydroxyloweralkyl, halogen, haloloweralkyl, lower alkoxycarbonyl, optionally substituted aryl or optionally substituted aralkyl, n represents an integer from 3 to 6; R.sup.3 represents hydrogen or single or multiple substitution on one or more of the aliphatic carbons by one or more substituents selected from lower alkyl, optionally substituted aryl and optionally substituted aralkyl; A represents a group of formula (i) or (ii) below:--CR.sup.4 R.sup.5 --(CR.sup.6 R.sup.7).sub.m -- (i)--CX--(CR.sup.6 R.sup.7).sub.m -- (ii)in which R.sup.4, R.sup.6 and R.sup.7 each independently represent hydrogen or lower alkyl (providing that when R.sup.5 is NH.sub.2, R.sup.4 is hydrogen); m is O or 1; R.sup.5 represents hydrogen, NH.sub.2, OH or loweralkoxy, and X is .dbd.O, .dbd.NH or .dbd.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: December 4, 1990
    Assignee: John Wyeth & Brother Limited
    Inventors: Roger Crossley, Albert Opalko
  • Patent number: 4900750
    Abstract: This invention concerns compounds of formula ##STR1## or salts thereof, wherein: Ar is an optionally substituted aryl radical;R represents hydrogen or an optionally substituted alkyl, aralkyl, or aryl group;R.sup.1 and R.sup.2 are the same or different and are selected from hydrogen and saturated or unsaturated, cyclic or acyclic aliphatic hydrocarbon residues optionally substituted by one or more groups selected from halogen, OH, carboxy, CN, alkoxy, alkylthio, aryloxy, alkoxycarbonyl, amino, substituted amino, and optionally substituted aryl;A and B independently represent a group of formula --XR.sup.3 whereinX is a group of formula --(CHR.sup.6).sub.p Y(CHR.sup.7).sub.q --whereinY represents --O--, --S--, --NR.sup.8 -- or a direct bond; p and q each represent 0, 1 or 2 providing that p and q do not both represent O when Y is a direct bond; and R.sup.6, R.sup.7 and R.sup.8 are independently hydrogen or alkyl; and R.sup.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: February 13, 1990
    Assignee: John Wyeth & Brother, Limited
    Inventors: John L. Archibald, Terence J. Ward, Albert Opalko
  • Patent number: 4694012
    Abstract: This invention concerns a method of treatment using 1,4-dihydropyridine derivatives having the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein R is aryl or heteroaryl;R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl;Y is --(CH.sub.2).sub.n --, --CH.sub.2 CH(CH.sub.3)-- or --CH.sub.2 C(CH.sub.3).sub.2 --;X is a 5 or 6 membered nitrogen containing aromatic heterocyclic ring which may optionally be substituted by one or more C.sub.1 -C.sub.4 alkyl, phenyl, benzyl, CN, --N(R.sup.3).sub.2, (CH.sub.2).sub.m CO.sub.2 H, (CH.sub.2).sub.m CO.sub.2 (C.sub.1 -C.sub.4 alkyl) or (CH.sub.2).sub.m CON(R.sup.3).sub.2 groups wherein each R.sup.3 is independently H or C.sub.1 -C.sub.4 alkyl and m is 0 or 1;and n is 1 to 3 when X is linked by a ring carbon atom or 2 or 3 when X is linked by a ring nitrogen atom.
    Type: Grant
    Filed: July 30, 1985
    Date of Patent: September 15, 1987
    Assignee: John Wyeth & Brother Limited
    Inventors: John L. Archibald, Terence J. Ward, Albert Opalko
  • Patent number: 4358452
    Abstract: Indoloquinolizines of the formula (I) ##STR1## and their pharmaceutically acceptable acid addition salts [wherein R.sup.1 represents hydrogen, lower alkyl or lower aralkyl, R.sup.2 and R.sup.3 each represent hydrogen, halogen, lower alkoxy or lower alkyl, R.sup.4 represents hydrogen, halogen or lower alkyl and R.sup.5 represents lower alkyl or aryl] possess antihypertensive activity.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: November 9, 1982
    Assignee: John Wyeth & Brother Limited
    Inventor: Albert Opalko