Patents Represented by Attorney Alan M. Krubiner
  • Patent number: 5470582
    Abstract: A controlled release pharmaceutical composition comprising a physiologically active agent dispersed in preformed porous polymeric microparticles is provided. The active agent concentration may be up to about 10% by weight to achieve controlled release. Each of the porous microparticles has a plurality of preformed pores into which active agent is loaded and from which the active agent is subsequently released to the environment of use. The compositions are capable of delivering physiologically effective amounts of active agent for at least about thirty days, which delivery may be reversibly controlled by exposure to ultrasound.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: November 28, 1995
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Andreas Supersaxo, Jim H. Kou
  • Patent number: 5455045
    Abstract: Mycophenolate mofetil and mycophenolic acid can be conveniently manufactured into high dose oral formulations by the hot melt filling of a supercooled mycophenolate mofetil or mycophenolic acid liquid into a pharmaceutical dosage form. High dose oral pharmaceutical formulations and manufacturing methods therefor are disclosed.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: October 3, 1995
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Glenn J. Samuels, Jung-Chung Lee, Charles Lee, Stephen Berry, Paul J. Jarosz
  • Patent number: 5449664
    Abstract: Nucleoside compounds of the formula ##STR1## wherein: B is a purine or a pyrimidine;X and X' are H, OH or F, provided that at least one is H;Y and Y' are H, OH, OCH.sub.3 or F, provided that at least one is H;Y' and Z together form a cyclic phosphate ester, provided that Y is H; orZ is ##STR2## where n is zero, one, two or three; and Z' is N.sub.3 or OCH.sub.3 ; provided that when X' and Y' are OH and Z' is N.sub.3, B is not cytosine, andwhen X' and Y' are OH and Z' is OCH.sub.3, B is not uracil, adenine or cytosine;and the pharmaceutically acceptable esters, ethers and salts thereof, have been found to have potent antiviral activity with a high therapeutic ratio.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: September 12, 1995
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Julien P. H. Verheyden, Hans Maag, Ernest J. Prisbe
  • Patent number: 5405864
    Abstract: Maleimide derivatives, i.e., the compounds of Formula I: ##STR1## wherein: R.sup.1 is H, halo, alkyl, OH, alkoxy, haloalkyl, NO.sub.2, or NR.sup.5 R.sup.6 ;R.sup.2 is H or CN;R.sup.3 is aryl or heteroaryl, provided that R.sup.3 is heteroaryl when R.sup.2 is H and R.sup.4 is NR.sup.5 R.sup.6 ; andR.sup.4 is NR.sup.5 R.sup.6 or isothiourea,where R.sup.5 and R.sup.6 are independently H or lower alkyl;and the pharmaceutically acceptable salts thereof, and their use as chemotherapeutic agents.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: April 11, 1995
    Assignee: Syntex (U.S.A.) Inc.
    Inventor: Chris A. Broka
  • Patent number: 5380879
    Abstract: The disclosed derivatives of mycophenolic acid are therapeutic agents advantageous in the treatment of disease states indicated for mycophenolic acid and/or mycophenolate mofetil and other immunosuppressant agents.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: January 10, 1995
    Assignee: Syntex (U.S.A.) Inc.
    Inventor: Eric B. Sjogren
  • Patent number: 5380739
    Abstract: Compounds of the Formula (I), (II), or (III): ##STR1## wherein the variables are as defined in the specification and the pharmaceutically acceptable salts thereof, exhibit useful pharmacological properties, and are particularly useful as angiotensin II antagonists.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: January 10, 1995
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Robin D. Clark, David E. Clarke, Lawrence E. Fisher, Alam Jahangir
  • Patent number: 5378847
    Abstract: The invention provides a new and efficient process for preparing 2,4(5)-substituted or 1,2,4-substituted imidazole derivatives.The invention also provides a process for preparing substituted aminoalkylimidazole derivatives, useful for the treatment of mammals having a variety of disease states, including stroke, epilepsy, hypertension, angina, migraine, arrhythmia, thrombosis, embolism, and the like.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: January 3, 1995
    Assignee: Syntex Pharmaceuticals, Ltd.
    Inventors: Gary McCort, Jean-Claude Pascal
  • Patent number: 5366737
    Abstract: This invention relates to compounds of the formulaor an optical isomer thereof wherein R.sup.1 and R.sup.2 are the same or different and are an alkyl or alkenyl group of 6 to 24 carbon atoms; R.sup.3, R.sup.4 and R.sup.5 are the same or different and are alkyl of 1 to 8 carbon atoms, aryl, aralkyl of 7 to 11 carbon atoms, or when two or three of R.sup.3, R.sup.4, and R.sup.5 are taken together to form quinuclidino, piperidino, pyrrolidino, or morpholino; n is 1 to 8; and X is a pharmaceutically acceptable anion.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: November 22, 1994
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Deborah A. Eppstein, Philip L. Felgner, Thomas R. Gadek, Gordon H. Jones, Richard B. Roman
  • Patent number: 5342953
    Abstract: Compounds of the formula: ##STR1## wherein: A is oxo or dioxo;R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen or lower alkyl of one to six carbon atoms;R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are independently hydrogen, lower alkyl of one to six carbon atoms, alkoxy, acyl or halo;are advantageously converted to thieno[3,2-c]pyridine derivatives and the pharmaceutically acceptable salts thereof, particularly ticlopidine hydrochloride.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: August 30, 1994
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Gary F. Cooper, Keith E. McCarthy
  • Patent number: 5296609
    Abstract: The invention provides a new and efficient process for preparing 2,4(5)-substituted or 1,2,4-substituted imidazole derivatives.The invention also provides a process for preparing substituted aminoalkylimidazole derivatives, useful for the treatment of mammals having a variety of disease states, including stroke, epilepsy, hypertension, angina, migraine, arrhythmia, thrombosis, embolism, and the like.The invention also relates to novel aminoalkylimidazole compounds.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: March 22, 1994
    Assignee: Syntex Pharmaceuticals, Ltd.
    Inventors: Gary McCort, Jean-Claude Pascal
  • Patent number: 5284971
    Abstract: Compounds of general formula (I) ##STR1## wherein R.sup.1 is (CH.sub.2).sub.n ((CHNR.sup.7 R.sup.8).sub.m C(O)R.sup.9 ; n=1-3; and m=0 or 1;R.sup.3 and R.sup.5 are independently Cl, Br, I, or CH.sub.3 ;R.sup.7 and R.sup.8 are independently H or (C.sub.1 -C.sub.4)alkyl;R.sup.9 is OH, (C.sub.1 -C.sub.4)alkoxy, or NR.sup.7 R.sup.8 ;R.sup.31 is H, Cl, Br, I, (C.sub.1 -C.sub.4)alkyl, (C.sub.4 -C.sub.6)cycloalkyl, (C.sub.1 -C.sub.4)haloalkyl, (C.sub.4 -C.sub.6)halocycloalkyl, or --CH(R.sup.10)Ar where Ar is selected from 5-hydroxypyrid-2-yl, 6-hydroxypyrid-3-yl, 6-hydroxypyridazin-3-yl, 6-methoxypyridazin-3-yl, 6-hydroxypyridazin-3-yl N-oxide, and 6-methoxypyridazin-3-yl N-oxide and R.sup.10 is H or (C.sub.1 -C.sub.4)alkyl;R.sup.41 is OH or a bioprecursor thereof; and the pharmaceutically acceptable salts thereof; are structural analogs of the thyroid hormones T.sub.3 and T.sub.4 and exhibit selective thyromimetic activity.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: February 8, 1994
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Keith A. Walker, Sharada S. Labadie, Denis J. Kertesz, Craig W. Laughton
  • Patent number: 5264437
    Abstract: The present invention relates to optionally substituted pyrido[2,3-d]pyrimidine-2,4(1H,3H)-diones or optionally substituted pyrido[2,3-d]pyrimidine-2(1H,3H)-ones, i.e., compounds of Formula I: ##STR1## wherein: Y is --CH.sub.2 -- or --C(O)--;R.sup.1 is hydrogen or --(CH.sub.2).sub.n --R.sup.7, wherein:R.sup.7 is aryl or heteroaryl, andn is 1 or 2,provided that when Y is --C(O)--, R.sup.7 is heteroaryl; andR.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are hydrogen, or one is selected from lower alkyl, halo, carboxy, methoxycarbonyl, carbamoyl, methylcarbamoyl, di-methylcarbamoyl, methylcarbonyl, methylthio, methylsulfinyl, methylsulfonyl, hydroxymethyl, amino, trifluoromethyl, cyano or nitro; orR.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from hydrogen, lower alkyl, nitro, chloro, fluoro, methoxycarbonyl or methylcarbonyl, provided at least one is hydrogen, and R.sup.6 is hydrogen;or a pharmaceutically acceptable ester, ether or salt thereof.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: November 23, 1993
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Robert S. Wilhelm, Ronnie L. Chin, Bruce H. Devens, Robert Alvarez
  • Patent number: 4962091
    Abstract: An active agent delivery system for the controlled administration of macromolecular polypeptides which comprises a micro-suspension of water-soluble components in a polylactide matrix.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: October 9, 1990
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Deborah A. Eppstein, Brian B. Schryver
  • Patent number: 4956365
    Abstract: Compounds of formulas (1) and (2): ##STR1## in which: X and Y are independently hydrogen, hydroxy, lower alkyl, lower alkoxy or halo, or X and Y taken together is methylenedioxy or ethylene-1,2-dioxy;W is oxygen or sulfur; andZ is --R.sup.1, --OR.sup.2 or --NR.sup.3 R.sup.4, whereinR.sup.1 is lower alkyl, lower haloalkyl, cycloalkyl, optionally substituted phenyl or phenyl lower alkyl, or heteroaryl;R.sup.2 is lower alkyl, optionally substituted phenyl or phenyl lower alkyl;R.sup.3 and R.sup.4 are independently hydrogen, alkyl, optionally substituted phenyl or phenyl lower alkyl; orR.sup.3 and R.sup.4 taken together with the nitrogen to which they are attached represent a heterocycle of the formula: ##STR2## wherein A is --(CH.sub.2).sub.m, --N(R.sup.5)-- or oxygen, in which m is an integer of 0-2 and R.sup.5 is hydrogen or lower alkyl;or a pharmaceutically acceptable salt thereof, are useful as .alpha..sub.2 -blockers.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: September 11, 1990
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Robin D. Clark, Andrew T. Kilpatrick, Michael Spedding
  • Patent number: 4940556
    Abstract: A long acting sustained release pharmaceutical composition for dihydropyridine calcium channel blockers wherein the calcium channel blocker and a pH-dependent binde are intimately admixed in essentially spherically shaped non-rugose particles of up to 1.2 mm in diameter.
    Type: Grant
    Filed: July 26, 1987
    Date of Patent: July 10, 1990
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Calum B. MacFarlane, Alastair B. Selkirk, Michael J. Dey
  • Patent number: 4929630
    Abstract: The present invention is directed to certain 3,5 substituted, 4,5-dihydroisoxazoles, and methods for their use. These compounds are transglutaminase inhibitors, and are particularly effective in the inhibition of epidermal transglutaminase and the treatment of acne.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: May 29, 1990
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Arlindo L. Castelhano, Lawrence M. DeYoung, Alexander Krantz, Diana H. Pliura, Michael C. Venuti
  • Patent number: 4921862
    Abstract: The invention concerns a method of inhibiting both thromboxane synthetase and cyclic-AMP phosphodiesterase in a mammal having a disease characterized by elevated thromboxane levels or an imbalance of prostacyclin/thromboxane levels with a compound of the formula: ##STR1## or a pharmaceutically acceptable acid addition salt or ester thereof, wherein:X is chosen from the group consisting of: ##STR2## and a covalent bond in which R.sup.1 is H, alkyl having 1-6 carbon atoms, optionally substituted phenyl or optionally substituted phenyl lower alkyl, when R.sup.2 is H or OH, or R.sup.1 and R.sup.2 taken together represent oxo, alkylidene having 1-6 carbon atoms or optionally substituted benzylidene;R.sup.3 is H or alkyl having 1-6 carbon atoms, R.sup.4 is H and R.sup.3 and R.sup.4 are either cis or trans to each other, or R.sup.3 and R.sup.4 taken together represent a covalent bond;n is an integer from 0-3;Het is 1-imidazolyl or 3-pyridyl; and the dotted line represents an optional covalent bond.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: May 1, 1990
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Keith A. M. Walker, John J. Bruno, Gregory R. Martinez
  • Patent number: 4920225
    Abstract: Optically active compounds of formula 1 ##STR1## wherein R.sub.1 is H or lower alkyl;R.sub.2 and R.sub.6 are each independently lower alkyl, aryl, or arylalkyl;R.sub.3 is CN, NO.sub.2, CO.sub.2 R.sub.5, CONHR.sub.5, SO.sub.2 R.sub.5, or P(O)(OR.sub.5).sub.2, where R.sub.5 is lower alkyl, lower alkoxyalkyl, aryl, or arylalkyl;R.sub.4 is aryl, heterocyclyl, or fused-ring heterocyclyl, optionally substituted with one, two, or three halo, NO.sub.2, CN, lower alkyl, lower alkoxy, lower alkylamino, CF.sub.3, OCH.sub.2 F, or OCF.sub.3 ;are prepared by fractional crystallization from hot organic solvent and water in the presence of a suitable optically active amine base.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: April 24, 1990
    Assignee: Laboratoires Syntex S.A.
    Inventor: Gilles Genain
  • Patent number: 4916238
    Abstract: This invention relates to a novel process for making an allenic prostanoic acid derivative in the form of a single stereoisomer, or a mixture of stereosiomers, represented by the formula (I): ##STR1## wherein R is lower alkyl, R.sup.1 is a protecting group which can be selectively removed in the presence of R.sup.2, R.sup.2 is an acid-labile, base-stable protecting group, X is --(CH.sub.2).sub.2 --, trans --CH.dbd.CH-- or --C.tbd.C--, Y is --C(R.sup.3)(OR.sup.2)CH.sub.2 --, in which --OR.sup.2 is in the .alpha. or .beta. configuration and R.sup.3 is hydrogen or methyl, Z is alkyl, or phenyl, benzyl or phenoxy each optionally substituted on the phenyl ring, and the wavy lines represent the .alpha. or .beta. configuration with the proviso that when one wavy line is .alpha. the other is .beta..
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: April 10, 1990
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Gary F. Cooper, Colin C. Beard, David Y. Jackson, Douglas L. Wren
  • Patent number: 4873232
    Abstract: Novel alkoxycarbonylamino benzoates and related copounds (carbamoyl benzoates) are disclosed for treatment of auto-immune disease states, such as arthritis.
    Type: Grant
    Filed: October 29, 1986
    Date of Patent: October 10, 1989
    Assignee: Syntex
    Inventors: Alexander Krantz, John M. Young