Patents Assigned to Syntex (U.S.A.)
  • Patent number: 5700936
    Abstract: Process for preparing the L-monovaline ester of 2-(2-amino-1,6-dihydro-6-oxo-purin-9-yl)methoxy-1,3-propanediol and its pharmaceutically acceptable salts. The present process relates to an improved process whereby ganciclovir is esterified with an L-valine derivative to provide a di-valine ganciclovir intermediate. Removal of one of the valine groups with a lower alkyl amine, benzylamine or benzyl methylamine provides the mono-valine ester compound of Formula I. These products are of value as antiviral agents with improved absorption.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: December 23, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventor: Humberto B. Arzeno
  • Patent number: 5696103
    Abstract: A method for treating osteoporosis via administration of a compound of the formula, 1.alpha.-fluoro-25-hydroxy-16-ene-23-yne-26,27-hexafluorocholecalciferol, in an amount therapeutically effective to restore bone density to an asymptomatic level, without inducing hypercalciuria, hypercalcemia, or nephrotoxicity is provided.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: December 9, 1997
    Assignees: Syntex (U.S.A.) Inc., Hoffmann-La Roche Inc.
    Inventors: John Joseph Nestor, Jr., Brian Henry Vickery, Milan Radoje Uskokovic
  • Patent number: 5695955
    Abstract: Synthetic polypeptide analogs of parathyroid hormone PTH, parathyroid hormone related peptide PTHrp, and of the physiologically active truncated homologs and analogs of PTH and PTHrp, in which amino acid residues (22-31) form an amphipathic .alpha.-helix, these residues (22-31) selected from hydrophilic amino acids (Haa) and lipophilic amino acids (Laa) ordered in the sequence:Haa (Laa Laa Haa Haa).sub.2 Laaand their pharmaceutically acceptable salts are useful for the prophylaxis and treatment of ostoporosis in mammals. Processes for the production of the polypeptides via solid phase and recombinant methods are provided.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: December 9, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: John L. Krstenansky, John J. Nestor, Jr., Teresa H. Ho, Brian H. Vickery, Chinh T. Bach
  • Patent number: 5693616
    Abstract: Synthetic polypeptide analogs of parathyroid hormone PTH, parathyroid hormone related peptide PTHrp, and of the physiologically active truncated homologs and analogs of PTH and PTHrp, in which amino acid residues (22-31) form an amphipathic .alpha.-helix, said residues (22-31) selected from hydrophilic amino acids (Haa) and lipophilic amino acids (Laa) ordered in the sequence:Haa (Laa Laa Haa Haa).sub.2 Laaand their pharmaceutically acceptable salts are useful for the prophylaxis and treatment of osteoporosis in mammals. Processes for the production of the polypeptides via solid phase and recombinant methods are provided.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: December 2, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: John L. Krstenansky, John J. Nestor, Jr., Brian H. Vickery
  • Patent number: 5688529
    Abstract: High dose, dry granulations or powder blends and aqueous oral suspensions of mycophenolate mofetil or mycophenolic acid, contain: active compound (7.5-30%), suspending/viscosity agent, sweetener, flavor, buffer (to a pH of 5-7.5), and optionally contain flavor enhancer, wetting agent, antimicrobial agent and color.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: November 18, 1997
    Assignee: Syntex (U.S.A) Inc.
    Inventors: Deborah Marilyn Lidgate, Li-hua Wang-Kessler, Bindu Joshi, Sayee Gojanan Hegde, Leo Gu
  • Patent number: 5688830
    Abstract: This invention relates to a compound of the Formula I: ##STR1## as a racemic mixture and its individual enantiomers, in particular the (R)-enantiomer, and their pharmaceutically acceptable salts. These compounds are useful as sodium channel blockers, and are particularly useful for the alleviation of neuropathic pain.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: November 18, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Jacob Berger, Lee Allen Flippin, John Cureton Hunter, David Garrett Loughhead, Robert James Weikert
  • Patent number: 5688795
    Abstract: The present invention relates to novel .alpha..sub.1 -adrenoceptor antagonists of Formula I: ##STR1## in which: p is 0 or 1;t is 0, 1 or 2;X is O, S or NR.sup.6 (in which R.sup.6 is hydro or (C.sub.1-6)alkyl);Y and Z are independently CH or N;R.sup.1 is hydro, hydroxy, halo, nitro, amino, cyano, (C.sub.1-4)alkylthio, acetylamino, trifluoroacetylamino, methylsulfonylamino, (C.sub.1-6)alkyl, (C.sub.3-6)cycloalkyl, (C.sub.3-6)cycloalkyl (C.sub.1-4)alkyl, oxazol-2-yl, aryl, heteroaryl, aryl (C.sub.1-4)alkyl, heteroaryl (C.sub.1-4)alkyl, (C.sub.1-6)alkyloxy, (C.sub.3-6)cycloalkyloxy, (C.sub.3-6)cycloalkyl (C.sub.1-4)alkyloxy, 2-propynyloxy, aryloxy, heteroaryloxy, aryl (C.sub.1-4)alkyloxy or heteroaryl (C.sub.1-4)alkyloxy (wherein alkyl is optionally substituted with one to three halo atoms and aryl or heteroaryl is optionally substituted with one to two substituents independently selected from halo and cyano);R.sup.2 is hydro, hydroxy, halo, cyano, (C.sub.1-6)alkyl or (C.sub.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: November 18, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Jurg Roland Pfister, David Ernest Clarke, Todd Richard Elworthy, David John Morgans, Jr., David Bruce Repke, Eric Brian Sjorgren, Helen Yen-hui Wu
  • Patent number: 5654304
    Abstract: 10,11-Methanodibenzosuberane derivatives, i.e., the compounds of Formula I: ##STR1## wherein: A is --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CHR.sup.a --CH.sub.2 --, or --CH.sub.2 --CHR.sup.a --CHR.sup.b --CH.sub.2 --, where one of R.sup.a or R.sup.b is H, OH, or lower acyloxy, and the other is H;R.sup.1 is H, F, Cl or Br;R.sup.2 is H, F, Cl or Br; andR.sup.3 is heteroaryl or phenyl optionally substuted with F, Cl, Br, CF.sub.3, CN, NO.sub.2 or OCHF.sub.2 ;and the pharmaceutically acceptable salts thereof, are useful chemosensitizing agents, e.g., for cancer chemotherapy, particularly for treating multidrug resistance.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: August 5, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Jurg R. Pfister, Doris L. Slate
  • Patent number: 5643909
    Abstract: 10,11-Methanodibenzosuberane derivatives, i.e., the compounds of Formula I: ##STR1## wherein: A is --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CHR.sup.a --CH.sub.2 --, or --CH.sub.2 --CHR.sup.a --CHR.sup.b --CH.sub.2 --, where one of R.sup.a or R.sup.b is H, OH, or lower acyloxy, and the other is H;R.sup.1 is H, F, Cl or Br;R.sup.2 is H, F, Cl or Br; andR.sup.3 is heteroaryl or phenyl optionally substituted with F, Cl, Br, CF.sub.3, CN, NO.sub.2 or OCHF.sub.2 ;and the pharmaceutically acceptable salts thereof, are useful chemosensitizing agents, e.g., for cancer chemotherapy, particularly for treating multidrug resistance.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: July 1, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Jurg R. Pfister, Doris L. Slate
  • Patent number: 5633279
    Abstract: The disclosed hexenoic acid side-chain derivatives of mycophenolic acid are therapeutic agents advantageous in the treatment of disease states indicated for mycophenolic acid and/or mycophenolate mofetil, including immune, inflammatory, tumor, proliferative, viral or psoriatic disorders.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 27, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: David Morgans, Jr., David B. Smith, Francisco X. Talam as, Dean R. Artis, Alicia Cervantes, Todd R. Elworthy, Mario Fern andez, Fidencio Franco, Ronald C. Hawley, Teresa Lara, David G. Loughhead, Peter H. Nelson, John W. Patterson, John C. Rohloff, Eric B. Sjogren, Alejandra Trejo, Ann M. Waltos, Robert J. Weikert
  • Patent number: 5622948
    Abstract: Pyrrole pyridazine and pyridazinone compounds are described. These compounds are useful as anti-inflammatory agents in the treatment of inflammation and pain. The preparation of these compounds, their pharmaceutically acceptable salts, and pharmaceutical compositions containing these compounds, is also described.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: April 22, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: James P. Dunn, Chakk S. Ramesha, Jim W. Barnett, Denis J. Kertesz, Aaron B. Miller, David Morgans, Jr., C. Elliott Sigal, Eric B. Sjogren, David B. Smith, Francisco X. Talamas
  • Patent number: 5622712
    Abstract: This invention relates to compounds of the formula ##STR1## or 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, 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: May 4, 1994
    Date of Patent: April 22, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Deborah A. Eppstein, Philip L. Felgner, Thomas R. Gadek, Gordon H. Jones, Richard B. Roman
  • Patent number: 5621140
    Abstract: (S)-ibuprofen may be separated from a mixture of (S)-ibuprofen and (R)-ibuprofen in high yield and enantiomeric purity in a single resolution step using an N-alkyl-D-glucamine as the resolving agent.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: April 15, 1997
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: George C. Schloemer, Eric Lodewijk, Gregory P. Withers
  • Patent number: 5589452
    Abstract: Synthetic polypeptide analogs of parathyroid hormone PTH, parathyroid hormone related peptide PTHrp, and of the physiologically active truncated homologs and analogs of PTH and PTHrp, in which amino acid residues (22-31) form an amphipathic .alpha.-helix, said residues (22-31) selected from hydrophilic amino acids (Haa) and lipophilic amino acids (Laa) ordered in the sequence:Haa(Laa Laa Haa Haa).sub.2 Laaand their pharmaceutically acceptable salts are useful for the prophylaxis and treatment of ostoporosis in mammals. Processes for the production of the polypeptides via solid phase and recombinant methods are provided.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: December 31, 1996
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: John L. Krstenansky, John J. Nestor, Jr., Teresa H. Ho, Brian H. Vickery, Chinh T. Bach
  • Patent number: 5567818
    Abstract: This invention relates to processes for preparing 2-(1-azabicyclo[2.2.2]oct-3-yl)-2,3,3a,4,5,6-tetrahydro-1H-benz[de]isoquin olin-1-one, particularly 2-(1-azabicyclo[2.2.2]oct-3S-yl)-2, 3,3aS,4,5,6-tetrahydro-1H-benz[de]isoquinolin-1-one, and to intermediates useful in such processes.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: October 22, 1996
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Bruce A. Kowalczyk, Charles A. Dvorak
  • Patent number: 5567816
    Abstract: A process for the preparation of acyclovir includes contacting an at least partially silylated guanine or mixture of at least partially silylated guanines with 1,3-dioxolane in the presence of a selective alkylation catalyst selected from the group consisting of trifluoromethanesulfonic acid, trimethylsilyl trifluoromethanesulfonate, and bistrimethylsilyl sulfonate, and hydrolyzing the product thus formed.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: October 22, 1996
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: George C. Schloemer, Yeun-Kwei Han, Peter J. Harrington
  • Patent number: 5565565
    Abstract: The invention relates to efficient and selective processes for the synthesis of the antiviral N-9 substituted guanine compounds acyclovir and ganciclovir.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: October 15, 1996
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Eric Lodewijk, Yeun-Kwei Han, George C. Schloemer, Sam L. Nguyen
  • Patent number: 5554384
    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: June 2, 1995
    Date of Patent: September 10, 1996
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Glenn J. Samuels, Jung-Chung Lee, Charles Lee, Stephen Berry, Paul J. Jarosz
  • Patent number: 5550289
    Abstract: This invention relates to compounds of the formula ##STR1## or 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: April 3, 1995
    Date of Patent: August 27, 1996
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Deborah A. Eppstein, Philip L. Felgner, Thomas R. Gadek, Gordon H. Jones, Richard B. Roman
  • Patent number: 5545637
    Abstract: The crystalline anhydrous salt formed by complexing mycophenolate mofetil with an anion selected from the group chloride, sulfate, phosphate and acetate (in particular the hydrochloride salt), and pharmaceutical compositions, intravenous formulations and a kit thereof, and associated methods of treatment.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: August 13, 1996
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Roger C. Fu, De-Mei Leung, Jeffrey S. Fleitman, Michele C. Rizzolio, Andrew R. Miksztal