Patents Represented by Attorney Stephen Faciszewski
  • Patent number: 5670506
    Abstract: There is disclosed a compound having the formula: ##STR1## wherein n is an integer from 5 to 9, wherein the core moiety is a heterocylic moiety wherein C.sub.a, C.sub.b, and C.sub.c are an R or S enantiomer or racemic mixture and the C.sub.a, C.sub.b, and C.sub.c carbon atoms are bonded together by a single bond, double bond, ether or ester linkages, wherein R.sub.1, R.sub.2 and R.sub.3 are independently halo, hydroxy, hydrogen, keto, isothiocyano, azide or haloacetoxy with the proviso that at least one of R.sub.1, R.sub.2 or R.sub.3 must be a halo, isothiocyano, azide or haloacetoxy group, wherein R.sub.4 is hydrogen, C.sub.1-6 alkyl, C.sub.1-6 alkenyl, cyclo C.sub.4-6 alkyl, or phenyl, and wherein halo refers to fluoro, chloro, bromo and iodo and salts thereof and pharmaceutical compositions thereof.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: September 23, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: Alistair Leigh, John Michnick, Anil Kumar, Gail Underiner
  • Patent number: 5652243
    Abstract: There is disclosed compounds and pharmaceutical compositions that are a resolved R or S (preferably R) enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in modulating cellular response to external or in situ primary stimuli, as well as to specific modes of administration of such compounds in effective amounts.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: July 29, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: James A. Bianco, Jack Singer
  • Patent number: 5648357
    Abstract: There is disclosed compounds and pharmaceutical compositions that are a resolved R or S (preferably R) enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in modulating cellular response to external or in situ primary stimuli, as well as to specific modes of administration of such compounds in effective amounts.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: July 15, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: James A. Bianco, Paul Woodson, David Porubek, Jack Singer
  • Patent number: 5641783
    Abstract: Disclosed are compounds having a straight or branched aliphatic hydrocarbon structure of formula I: ##STR1## In formula I, n is an integer from one to four and m is an integer from four to twenty. Independently, R.sub.1 and R.sub.2 are hydrogen, a straight or branched chain alkyl, alkenyl or alkynyl of up to twenty carbon atoms in length or --(CH.sub.2).sub.w R.sub.5. If R.sub.1 or R.sub.2 is --(CH.sub.2).sub.w R.sub.5, w may be an integer from one to twenty and R.sub.5 may be an hydroxyl, halo, C.sub.1-8 alkoxyl group or a substituted or unsubstituted carbocycle or heterocycle. Alternatively, R.sub.1 and R.sub.2 may jointly form a substituted or unsubstituted, saturated or unsaturated heterocycle having from four to eight carbon atoms, N being a hetero atom of the resulting heterocycle. R.sub.3 may be either hydrogen or C.sub.1-3. In the compounds, a total sum of carbon atoms comprising R.sub.1 or R.sub.2, (CH.sub.2).sub.n and (CH.sub.2).sub.m does not exceed forty. R.sub.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: June 24, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: J. Peter Klein, Gail E. Underiner, Anil M. Kumar
  • Patent number: 5629423
    Abstract: A process for synthesizing enantiomerically pure chiral secondary alcohol compounds linked to a heterocyclic core moiety, using a natural chiral molecule starting material. The inventive process is particularly useful for bulk manufacturing of chiral secondary alcohol compounds.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: May 13, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: J. Peter Klein, Alistair J. Leigh, John Michnick, Anil M. Kumar, Gail E. Underiner
  • Patent number: 5629315
    Abstract: There is disclosed compounds and pharmaceutical compositions that are a resolved R or S (preferably R) enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in modulating cellular response to external or in situ primary stimuli, as well as to specific modes of administration of such compounds in effective amounts.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: May 13, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: James A. Bianco, Paul Woodson, David Porubek, Jack Singer
  • Patent number: 5621102
    Abstract: There is disclosed compounds and pharmaceutical compositions that are a resolved R or S (preferably R) enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in modulating cellular response to external or in situ primary stimuli, as well as to specific modes of administration of such compounds in effective amounts.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: April 15, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: James A. Bianco, Paul Woodson, David Porubek, Jack Singer
  • Patent number: 5620984
    Abstract: There is disclosed compounds and pharmaceutical compositions that are a resolved R or S (preferably R) enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in treating inflammatory disease.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: April 15, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: James A. Bianco, Paul Woodson, David Porubek, Jack Singer
  • Patent number: 5612349
    Abstract: There is disclosed compounds and pharmaceutical compositions that are a resolved R or S (preferably R) enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in modulating cellular response to external or in situ primary stimuli, as well as to specific modes of administration of such compounds in effective amounts.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: March 18, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: James A. Bianco, Paul Woodson, David Porubek, Jack Singer
  • Patent number: 5585380
    Abstract: The specification discloses methods for modulating cellular metabolism in a subject, modulating being desirable to mitigate a condition of the subject. Disclosed methods include processes for administering to said subject an effective amount of a compound of the formula ##STR1## wherein one and only one of R.sup.1 and R.sup.3 is a straight-chain or branched-chain .omega.-hydroxyalkyl (5-8C), or is a branched-chain (.omega.-1)-hydroxyalkyl (5-8C), or is an (.omega.-1)-oxoalkyl (5-8C), or is an (.omega., .omega.-1) or (.omega.-1, .omega.-2)-dihydroxyalkyl (5-8C), or is an alkenyl substituent (5-8C), and the other is alkyl (1-12C) optionally containing one or two non-adjacent oxygen atoms in place of C.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: December 17, 1996
    Assignee: Fred Hutchinson Cancer Research Center
    Inventors: James A. Bianco, Stuart L. Bursten, Jack W. Singer
  • Patent number: 5580874
    Abstract: Them is disclosed compounds and pharmaceutical compositions that is R enantiomer of an .omega.-1 alcohol of a straight chain alkyl (C.sub.5-8) substituted at the 1-position of 3,7-disubstituted xanthine. The inventive compounds are effective in treating the side effects of immunosuppressive agent and interleukin-2 therapy.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: December 3, 1996
    Assignee: Cell Therapeutics, Inc.
    Inventors: James A. Bianco, Paul Woodson, David Porubek, Jack Singer
  • Patent number: 5521315
    Abstract: There is disclosed an olefin-substituted compound having the formula:R--(core moiety),wherein R is a straignt chain hydrocarbon having at least one double bond and a carbon chain length of from about 6 to about 18 carbon atoms, wherein multiple double bonds are separated from each other by at least three carbon atoms, wherein the closest double bond to the core moiety is at least five carbon atoms from the core moiety, and wherein the hydrocarbon chain may be substituted by a hydroxyl, halo, keto or dimethylanimo group and/or interrupted by an oxygen atom and salts thereof and pharmaceutical compositions thereof.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: May 28, 1996
    Assignee: Cell Therapeutics, Inc.
    Inventors: Gail Underiner, David Porubek, J. Peter Klein, Elisa Eiseman, Alistair Leigh, Anil Kumar, John Michnick
  • Patent number: 5473070
    Abstract: There is disclosed compounds and pharmaceutical compositions comprising compounds of the formula: ##STR1## wherein each of one or two R is independently ##STR2## wherein n is an integer from 7 to 20, at least one of X or Y is --OH and if one of X or Y is --OH then the other X or Y is H, CH.sub.3, CH.sub.3 --CH.sub.2, CH.sub.3 --(CH.sub.2).sub.2 --, or (CH.sub.3).sub.2 --CH.sub.2 --, and W.sub.1, W.sub.2, and W.sub.3 is independently H, CH.sub.3, CH.sub.3 --CH.sub.2, CH.sub.3 --(CH.sub.2).sub.2 --, or (CH.sub.3).sub.2 --CH.sub.2 --, and wherein the alkyl groups may be substituted by a hydroxyl, halo or dimethylamino group and/or interrupted by an oxygen atom, H or alkyl (1-4C), including resolved enantiomers and/or diastereomers, salts and mixtures thereof. In particular, the compounds lower elevated levels of unsaturated, non-arachidonate phosphatidic acid (PA) and diacylglycerol (DAG) derived from said PA within seconds of the primary stimulus and their contact with said cells.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: December 5, 1995
    Assignee: Cell Therapeutics, Inc.
    Inventors: Gail Underiner, David Porubek, J. Peter Klein, Paul Woodson
  • Patent number: 5470878
    Abstract: Therapeutic compounds have the formula:(X)j-(non-cyclic core moiety),j being an integer from one to three, the core moiety is non-cyclic and X is a racemic mixture, R or S enantiomer, solvate, hydrate, or salt of: ##STR1## *C is a chiral carbon atom, n is an integer from one to four (preferably from one to three), one or more carbon atoms of (CH.sub.2).sub.n may be substituted by a keto or hydroxy group, and m is an integer from one to fourteen. Independently, R.sub.1 and R.sub.2 may be a hydrogen, a straight or branched chain alkane or alkene of up to twelve carbon atoms in length, or --(CH.sub.2).sub.w R.sub.5, w being an integer from two to fourteen and R.sub.5 being a mono-, di- or tri-substituted or unsubstituted aryl group, substituents on R.sub.5 being hydroxy, chloro, fluoro, bromo, or C.sub.1-6 alkoxy. Or jointly, R.sub.1 and R.sub.2 form a substituted or unsubstituted, saturated or unsaturated heterocyclic group having from four to eight carbon atoms, N being a hetero atom. R.sub.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: November 28, 1995
    Assignee: Cell Therapeutics, Inc.
    Inventors: John Michnick, Gail E. Underiner, J. Peter Klein, Glenn C. Rice
  • Patent number: 5440041
    Abstract: There is disclosed compounds and pharmaceutical compositions having a xanthine core of the formula: ##STR1## wherein each of one or two R is independently ##STR2## wherein n is an integer from about 3 to about 18 forming a hydrocarbon chain, wherein the hydrocarbon chain may have one or more double bonds (preferably in a cis configuration), and may be substituted by a hydroxyl, halo or dimethylamino group and/or interrupted by an oxygen atom. The compounds lower elevated levels of unsaturated, non-arachidonate phosphatidic acid (PA) and diacylglycerol (DAG) derived from said PA within seconds of the primary stimulus and their contact with cells. The modulatory effect depends on the nature of the target cell and the stimulus applied.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: August 8, 1995
    Assignee: Cell Therapeutics, Inc.
    Inventors: Alistair Leigh, Gail Underiner
  • Patent number: 5354756
    Abstract: There is disclosed compounds and pharmaceutical compositions having a xanthine core and one or two hydrocarbon side chains bonded to a ring nitrogen atom, wherein the hydrocarbon side chains are independently a straight chain hydrocarbon having at least one double bond in a carbon chain length of from about 4 to about 18 carbon atoms in length, wherein multiple double bonds are separated from each other by at least three carbon atoms, and wherein the hydrocarbon chain may be substituted by a hydroxyl, halo or dimethylamino group and/or interrupted by an oxygen atom. The compounds lower elevated levels of unsaturated, non-arachidonate phosphatidic acid (PA) and diacylglycerol (DAG) derived from said PA within seconds of the primary stimulus and their contact with cells. The modulatory effect depends on the nature of the target cell and the stimulus applied.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: October 11, 1994
    Assignee: Cell Therapeutics, Inc.
    Inventors: Gail Underiner, David Porubek, J. Peter Klein