Nitrogen Or Divalent Chalcogen Double Bonded Directly To Carbocyclic Ring Of The Pentacyclo Ring System (e.g., Morphinones, Etc.) Patents (Class 546/45)
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Patent number: 8951557Abstract: Disclosed are a sustained release solid formulation comprising a drug, for example, oxycodone or its pharmaceutically acceptable salt, in a water-insoluble matrix, which comprises a wax type excipient and copovidone, and thus, has increased compressibility and fluidity and reduced adhesiveness, and a method of preparing the same.Type: GrantFiled: April 28, 2008Date of Patent: February 10, 2015Assignee: Hana Pharm. Co. Ltd.Inventors: Shajoung Chang, Oak Choi
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Publication number: 20150038715Abstract: The present invention provides a process for preparing an oxymorphone acid adduct, said process comprising hydrogenating an aqueous solution of 14-hydroxymorphinone and an acid to form a solution of the oxymorphone acid adduct, wherein the hydrogenation is carried out at one or more temperatures greater than 40° C. in the presence of a hydrogenation catalyst and hydrogen gas, wherein the level of 6?-oxymorphol produced is ?3.00 area % as determined by HPLC.Type: ApplicationFiled: February 5, 2014Publication date: February 5, 2015Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: EWART GRANT, BRIAN HEINRICH, SAROOP MATHARU, NICOLAS ARCHER
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Patent number: 8940729Abstract: A pharmaceutical composition comprising a drug substance consisting essentially of a pharmaceutically acceptable organic acid addition salt of an amine containing pharmaceutically active compound wherein the amine containing pharmaceutical active compound is selected from the group consisting of racemic or single isomer ritalinic acid or phenethylamine derivatives and the drug substance has a physical form selected from amorphous and polymorphic.Type: GrantFiled: April 11, 2012Date of Patent: January 27, 2015Assignee: Pisgah Laboratories, Inc.Inventors: Clifford Riley King, Stephen G. D'Ambrosio, David W. Bristol
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Patent number: 8921557Abstract: The present invention relates to a novel process for preparing opiates or salts thereof. More particularly, the present invention relates to oxidizing the starting material in a continuous flow reactor, followed by either an isolation of the intermediate, or a direct reduction reaction.Type: GrantFiled: March 21, 2011Date of Patent: December 30, 2014Assignee: Siegfried AGInventors: Beat Weber, Stefan Sahli
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Patent number: 8916706Abstract: This invention relates to synthesis of (R),(R)-2,2?-bis-MNTX, as shown in Formula (I), and related methods and products.Type: GrantFiled: June 6, 2013Date of Patent: December 23, 2014Assignee: Progenics Pharmaceuticals, Inc.Inventors: Alfred A. Avey, Julio Perez
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Patent number: 8916707Abstract: The present invention provides a process for preparing an oxycodone acid adduct, said process comprising hydrogenating an aqueous solution of 14-hydroxycodeinone and an acid to form a solution of the oxycodone acid adduct, wherein the hydrogenation is carried out at one or more temperatures greater than ambient temperature in the presence of a hydrogenation catalyst and hydrogen gas, wherein the solution of oxycodone acid adduct comprises 6?-oxycodol in an amount ?about 0.800 area % as determined by HPLC.Type: GrantFiled: August 2, 2013Date of Patent: December 23, 2014Assignee: Johnson Matthey Public Limited CompanyInventors: Nicolas Archer, Maureen Young, Timothy Davies, Amy Price, Michael Bease, Barbara Jamieson, Ewart Grant, Brian Heinrich, Saroop Matharu
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Patent number: 8916581Abstract: This invention relates to S-MNTX, methods of producing S-MNTX, pharmaceutical preparations comprising S-MNTX and methods for their use.Type: GrantFiled: June 23, 2011Date of Patent: December 23, 2014Assignee: Progenics Pharmaceuticals, Inc.Inventors: Thomas A. Boyd, Howard Wagoner, Suketu P. Sanghvi, Christopher Verbicky, Stephen Andruski
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Publication number: 20140371458Abstract: The oxazolidine derived from the reaction of oxymorphone with the Burgess reagent, temporarily protected at 0-3 and C-6, reacts with Grignard or other suitable metallic or organometallic reagents to directly provide, for example, A/-allyl, A/-methylcyclopropyl and /V-methylcyclobutyl derivatives that are further converted into naltrexone, naloxone, nalbuphone and nalbuphine in excellent yields. These morphine analogs can be prepared from the oxazolidine in a one-pot synthesis.Type: ApplicationFiled: January 30, 2013Publication date: December 18, 2014Applicant: Brock UniversityInventors: Tomas HUDLICKY, Mary Ann ENDOMA-ARIAS
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Publication number: 20140323416Abstract: The aspects of the present disclosure are directed to novel compounds, formulations containing said compounds or pharmaceutically acceptable salts thereof which are suitable for administration to a patient. In particular, to 5-methyldihydromorphone prodrug compounds described in general Formula I and II and the use of the compounds for treating pain associated with a variety of chronic human disorders including for example neuropathic pain and pain associated with cancer, surgeries or injuries.Type: ApplicationFiled: April 16, 2014Publication date: October 30, 2014Inventors: Anthony MARFAT, Peter CORNELIUS, Robert VOLKMANN, Panayiotis ZAGOURAS, Frederick Raymond NELSON, Anton Franz Joseph FLIRI
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Patent number: 8871779Abstract: The present invention generally relates to processes for preparing highly pure morphinan-6-one products. The processes involve reducing the concentration of ?,?-unsaturated ketone compounds present as impurities in morphinan 6 one products or reaction mixtures including morphinan 6 one compounds by treatment with a sulfur-containing compound.Type: GrantFiled: March 2, 2007Date of Patent: October 28, 2014Assignee: Mallinckrodt LLCInventors: Henry J. Buehler, William E. Dummitt, Anthony Mannino, Dennis C. Aubuchon, Hong Gu
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Publication number: 20140303200Abstract: This invention relates to the discovery of novel polymorphic forms of naltrexone, including solvates, hydrates, anhydrous and other crystalline forms and combinations thereof. These novel forms of naltrexone impart advantages in pharmaceutical formulations incorporating them, including sustained release, or long acting, formulations.Type: ApplicationFiled: April 10, 2014Publication date: October 9, 2014Applicant: Alkermes, Inc.Inventors: Harry G. Brittain, David A. Dickason, Joyce M. Hotz, Shawn L. Lyons, J. Michael Ramstack, Steven G. Wright
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Patent number: 8853402Abstract: A process for the reduction of a 6-keto group in a morphinan alkaloid to the corresponding 6-hydroxy group includes hydrogenating the 6-keto group using gaseous hydrogen in the presence of a heterogeneous catalyst and a solvent, to yield the 6-hydroxy morphinan alkaloid, wherein the reduction is carried out at a pH in the range of about 5 to about 7, and the 6-hydroxy morphinan alkaloid has an ?:? ratio of >85:15.Type: GrantFiled: August 13, 2010Date of Patent: October 7, 2014Assignee: Johnson Matthey Public Limited CompanyInventors: George Scott Wilson, Maureen Joan Young
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Patent number: 8853232Abstract: The present invention provides a compound of formula I: wherein R1, R2, R2? and X? are as defined and described herein, methods of manufacture thereof and compositions thereof, useful for example as peripheral mu opioid receptor antagonists in treatment of side effects of opioid administration.Type: GrantFiled: September 4, 2013Date of Patent: October 7, 2014Assignees: Wyeth LLC, Progenics Pharmaceuticals., Inc.Inventors: Alfred A. Avey, Appavu Chandrasekaren, Harold D. Doshan, Julio Perez, Yakov Rotshteyn
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Patent number: 8846923Abstract: Synthetic methods are provided for preparation of oxycodone and salts thereof with an improved impurity profile. Thebaine is converted to 14-hydroxycodeinone sulfate intermediate to minimize a 7,8-dihydro-8,14-dihydroxycodeinone impurity. Efficient methods for conversion of oxycodone base to oxycodone hydrochloride are provided to minimize 14-hydroxycodeinone impurity in the final product.Type: GrantFiled: December 18, 2013Date of Patent: September 30, 2014Assignee: Cody Laboratories, Inc.Inventors: Zinovy Itov, Vladimir F. Kuznetsov, Iouri Voitsekhovski
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Patent number: 8841452Abstract: The present invention relates to an improved process for recovery of nalmefene hydrochloride[17-(cyclopropylmethyl)-4,5-alpha-epoxy-6-methylenemorphinan-3,14-diol hydrochloride] from an aqueous composition containing nalmefene and certain impurities.Type: GrantFiled: December 6, 2012Date of Patent: September 23, 2014Assignee: H. Lundbeck A/SInventors: Carla De Faveri, Mariano Stivanello
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Publication number: 20140275149Abstract: Orally administrable pharmaceutical compositions, methods of administration, and methods of making the same are provided. The pharmaceutical compositions provide abuse deterrent properties.Type: ApplicationFiled: March 18, 2014Publication date: September 18, 2014Applicant: Inspirion Delivery Technologies, LLCInventors: Manish S. Shah, Ray J. DiFalco, Stefan Aigner
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Publication number: 20140256717Abstract: There is provided compounds of formula I, wherein R1, R2a, R2b, R2c, X, Y, Z, R3 and ring A/B have meanings given in the description, and pharmaceutically-acceptable esters, amides, solvates or salts thereof, which compounds are useful in the treatment of diseases in which inhibition of a protein or lipid kinase (e.g. PI3-K, particularly class I PI3K, PIM family kinase and/or mTOR) is desired and/or required, and particularly in the treatment of cancer. The invention also relates to combinations containing such compounds.Type: ApplicationFiled: May 18, 2012Publication date: September 11, 2014Applicant: Centro Nacional de Investigaciones Oncológicas (CNIO)Inventors: Joaquín Pastor Fernández, Rosa Maria Álvarez Escobar, Rosario Concepción Riesco Fagundo, Ana Belén García García, Antonio Rodríguez Hergueta, Jose Ignacio Martin Hernando, Carmen Blanco Aparicio, David Álvaro Cebrián Muñoz
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Publication number: 20140255308Abstract: Compounds of formula: in which R4 is chosen from substituted phenyl, optionally substituted naphthylene, optionally substituted anthracene and optionally substituted aromatic heterocycle, are useful as analgesics.Type: ApplicationFiled: May 19, 2014Publication date: September 11, 2014Applicant: MEMORIAL SLOAN-KETTERING CANCER CENTERInventors: Gavril Pasternak, Susruta Majumdar
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Patent number: 8822687Abstract: 8?,14-Dihydroxy-7,8-dihydrocodeinone is described.Type: GrantFiled: February 24, 2010Date of Patent: September 2, 2014Assignees: Purdue Pharma L.P., The P.F. Laboratories, Inc., Purdue Pharmaceuticals L.P., Rhodes TechnologiesInventors: Robert Chapman, Lonn S. Rider, Qi Hong, Donald Kyle, Robert Kupper
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Patent number: 8816084Abstract: The present invention relates to a X-form crystal of 17-cyclopropylmethyl-3,14?-dihydroxy-4,5?-epoxy-6?-[N-methyl-trans-3-(3-furyl)acrylamido]morphinan hydrochloride and the manufacturing method thereof, wherein the X-form crystal of the compound has characteristic diffraction peaks at positions of 2? of 13.6°(±0.2°), 17.2°(±0.2°), 19.1°(±0.2°), 23.2°(±0.2°), and 23.8°(±0.2°) in a powder X-ray diffraction pattern thereof. The present invention also relates to a pharmaceutical composition comprising the above-mentioned X-form crystal of morphinan derivative hydrochloride.Type: GrantFiled: January 28, 2014Date of Patent: August 26, 2014Assignee: Everlight Chemical Industrial CorporationInventors: Yuan-Yi Wang, Yu-Kai Li, Yu-Ting Su, Chia-Chen Hung, Chi-Hsiang Yao
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Publication number: 20140235860Abstract: An improved process for preparing buprenorphine and a method for increasing the yield of buprenorphine or a derivative thereof.Type: ApplicationFiled: October 1, 2012Publication date: August 21, 2014Applicant: JOHNSON MATTEY PUBLIC LIMITED COMPANYInventors: Nicolas Archer, David August, Michael Bease, Barbara Jamieson, Robert S. Marmor
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Publication number: 20140220146Abstract: The invention pertains to the use of opiod antagonists for the treatment of urinary retention.Type: ApplicationFiled: April 10, 2014Publication date: August 7, 2014Applicant: Euro-Celtique S.A.Inventors: Michael HOPP, Petra LEYENDECKER
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Publication number: 20140171643Abstract: Disclosed are methods for making aldehydes and ketones comprising allowing the corresponding primary or secondary alcohol to react in the presence of trichoroisocyanuric acid, a compound of formula R1SR2 and a base. In one embodiment, the alcohol is a compound of formula (I): wherein R3 is a protecting group. Also disclosed are methods for making 3-O-protected morphine dienol carboxylates comprising allowing a compound of formula (I) to oxidize in the presence of a chlorine-containing compound and a compound of formula R1SR2; and allowing the product of the oxidation step to react with an acylating agent.Type: ApplicationFiled: February 24, 2014Publication date: June 19, 2014Applicant: Purdue Pharma L.P.Inventor: Andreas STUMPF
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Processes for preparing morphinan-6-one products with low levels of alpha beta-unsaturated compounds
Patent number: 8748611Abstract: The present invention generally relates to processes for preparing highly pure morphinan-6-one products. The processes involve reducing the concentration of ?,?-unsaturated ketone compounds present as impurities in morphinan 6 one products or reaction mixtures including morphinan 6 one compounds by treatment with a sulfur-containing compound.Type: GrantFiled: November 11, 2011Date of Patent: June 10, 2014Assignee: Mallinckrodt LLCInventors: Henry J. Buehler, William E. Dummitt, Anthony Mannino, Dennis C. Aubuchon, Hong Gu -
Publication number: 20140155608Abstract: The present invention relates to a new process for producing naltrexone [17-(cyclopropylmethyl)-4,5?-epoxy-3,14-dihydroxy-morphinan-6-one] from noroxymorphone [4,5-?-epoxy-3,14-dihydroxy-morphinan-6-one] by alkylation with a cyclopropylmethyl halide.Type: ApplicationFiled: May 2, 2013Publication date: June 5, 2014Inventors: Carla De Faveri, Mariano Stivanello, Florian Anton Martin Huber
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Patent number: 8735420Abstract: This invention relates to the discovery of novel polymorphic forms of naltrexone, including solvates, hydrates, anhydrous and other crystalline forms and combinations thereof. These novel forms of naltrexone impart advantages in pharmaceutical formulations incorporating them, including sustained release, or long acting, formulations.Type: GrantFiled: November 30, 2012Date of Patent: May 27, 2014Assignee: Alkermes, Inc.Inventors: Harry G. Brittain, David A. Dickason, Joyce M. Hotz, Shawn L. Lyons, J. Michael Ramstack, Steven G. Wright
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Publication number: 20140142132Abstract: The present invention provides a compound of formula I: wherein R1, R2, R2? and X? are as defined and described herein, methods of manufacture thereof and compositions thereof, useful for example as peripheral mu opioid receptor antagonists in treatment of side effects of opioid administration.Type: ApplicationFiled: September 4, 2013Publication date: May 22, 2014Applicants: WYETH, LLC, PROGENICS PHARMACEUTICALS, INC.Inventors: Alfred A. Avey, Appavu Chandrasekaren, Harold D. Doshan, Julio Perez, Yakov Rotshteyn
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Patent number: 8716278Abstract: A pharmaceutical composition comprising a drug substance consisting essentially of a pharmaceutically acceptable organic acid addition salt of an amine containing pharmaceutically active compound wherein the amine containing pharmaceutical active compound is selected from the group consisting of racemic or single isomer ritalinic acid or phenethylamine derivatives and the drug substance has a physical form selected from amorphous and polymorphic.Type: GrantFiled: April 11, 2012Date of Patent: May 6, 2014Assignee: Pisgah Laboratories, Inc.Inventors: Clifford Riley King, Stephen G. D'Ambrosio, David W. Bristol
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Patent number: 8703949Abstract: The present invention provides processes for the preparation of N-alkyl morphinans without the isolation of nor-morphinan intermediates. In particular, the invention provides tandem hydrolysis/alkylation reactions for the synthesis of N-alkyl morphinans.Type: GrantFiled: August 3, 2011Date of Patent: April 22, 2014Assignee: Mallinckrodt LLCInventors: Subo Liao, Peter X. Wang, David W. Berberich, Douglas C. Miller
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Patent number: 8703950Abstract: A method of preparing oxycodone includes forming 14-hydroxycodeine by reduction of 14-hydroxycodeinone and rearrangement of the 14-hydroxycodeine to form the oxycodone. During the reduction step, the ketone group of an undesirable contaminant precursor, 8,14-dihydroxy-7,8-dihydrocodeinone, is reduced to a hydroxyl group thus forming a triol. This triol is substantially inert with respect to reforming 14-hydroxycodeinone and can be readily separated from oxycodone.Type: GrantFiled: July 1, 2011Date of Patent: April 22, 2014Assignee: Johnson Matthey Public Limited Co.Inventors: Erno M. Keskeny, James J. Mencel, Jen-Sen Dung
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Publication number: 20140107143Abstract: Compounds of formulas: are disclosed. The compounds are useful for ameliorating the side effects of therapeutic opiates.Type: ApplicationFiled: September 27, 2013Publication date: April 17, 2014Applicant: Rensselaer Polytechnic InstituteInventor: Mark P. WENTLAND
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Patent number: 8685995Abstract: Embodiments of the invention provide methods of treating a disorder or disease characterized by cellular proliferation and migration by co-administering a synergistically effective amount of an mTOR inhibitor and a ?-opioid receptor antagonist.Type: GrantFiled: March 20, 2009Date of Patent: April 1, 2014Assignee: The University of ChicagoInventors: Jonathan Moss, Patrick A. Singleton
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Publication number: 20140088132Abstract: Crystalline, anhydrous hydrochloride salts of 4,5?-epoxy-3,14-dihydroxy-17-methylmorphinan-6-one (oxymorphone) are disclosed and three polymorphic forms of these salts are reported. The invention further relates to a method for the production of such salts, a pharmaceutical composition comprising an effective amount of such a salt and such a salt as a medicament and for the treatment and/or prevention of pain.Type: ApplicationFiled: November 27, 2013Publication date: March 27, 2014Applicant: GRÜNENTHAL GMBHInventors: Andreas FISCHER, Dagmar PETERS-GROTH, Dagmar LISCHKE
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Patent number: 8669366Abstract: An improved process for the N-alkylation of tertiary morphinan alkaloid bases to form the corresponding quaternary morphinan alkaloid derivatives.Type: GrantFiled: March 6, 2008Date of Patent: March 11, 2014Assignee: Mallinckrodt LLCInventors: Peter X. Wang, Gary L. Cantrell, Robert E. Halvachs, Kevin R. Roesch, Henry J. Buehler, Joseph P. Haar, Jr.
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Publication number: 20140051861Abstract: Methods are provided which include converting oripavine to other opiates, including converting oripavine to naltrexone, buprenorphine, 14-hydroxymorphinone and/or converting 14-hydroxymorphinone to oxymorphone. Purification and salt formation are optionally included.Type: ApplicationFiled: October 23, 2013Publication date: February 20, 2014Applicant: PENICK CORPORATIONInventor: Bao-Shan HUANG
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Patent number: 8653271Abstract: The present invention is directed to novel codrugs comprising bupropion or hydroxybupropion and an opioid antagonist or an opioid agonist joined together by chemical bonding. The codrugs provide a significant increase in the transdermal flux across human skin, as compared to the basic opioid antagonist or opioid agonist.Type: GrantFiled: October 18, 2007Date of Patent: February 18, 2014Assignee: University of Kentucky Research FoundationInventors: Audra L. Stinchcomb, Peter A. Crooks, Mohamed O. Hamad, Paul K. Kiptoo
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Patent number: 8653065Abstract: A pharmaceutical composition comprising a drug substance consisting essentially of a pharmaceutically acceptable organic acid addition salt of an amine containing pharmaceutically active compound wherein the amine containing pharmaceutical active compound is selected from the group consisting of racemic or single isomer ritalinic acid or phenethylamine derivatives and the drug substance has a physical form selected from amorphous and polymorphic.Type: GrantFiled: April 11, 2012Date of Patent: February 18, 2014Assignee: Pisgah Laboratories, Inc.Inventors: Clifford Riley King, Stephen G. D'Ambrosio, David W. Bristol
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Publication number: 20140045876Abstract: The present invention provides a process for preparing an oxycodone acid adduct, said process comprising hydrogenating an aqueous solution of 14-hydroxycodeinone and an acid to form a solution of the oxycodone acid adduct, wherein the hydrogenation is carried out at one or more temperatures greater than ambient temperature in the presence of a hydrogenation catalyst and hydrogen gas, wherein the solution of oxycodone acid adduct comprises 6?-oxycodol in an amount ?about 0.800 area % as determined by HPLC.Type: ApplicationFiled: August 2, 2013Publication date: February 13, 2014Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: NICOLAS ARCHER, MAUREEN YOUNG, TIMOTHY DAVIES, AMY PRICE, MICHAEL BEASE, BARBARA JAMIESON, EWART GRANT, BRIAN HEINRICH, SAROOP MATHARU
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Publication number: 20140031543Abstract: The present invention provides (+)-morphinanium compounds comprising substituted 6-hydroxy or 6-amine groups. The invention also provides methods for inhibiting microglial activation by administering the compounds of the invention.Type: ApplicationFiled: October 3, 2013Publication date: January 30, 2014Applicant: Mallinckrodt LLCInventors: Christopher W. Grote, Amruta R. Poreddy
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Patent number: 8624031Abstract: The invention relates to processes for the production of alkaloids without the isolation of intermediates.Type: GrantFiled: September 7, 2012Date of Patent: January 7, 2014Assignee: Mallinckrodt LLCInventors: Peter X. Wang, Tao Jiang, David W. Berberich
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Patent number: 8623888Abstract: The present invention provides 3-oxy-hydromorphone derivatives, and in particular, 3-ester, 3-carbonate, and 3-sulfonate derivatives of hydromorphone.Type: GrantFiled: July 9, 2010Date of Patent: January 7, 2014Assignee: Mallinckrodt LLCInventors: Gary L. Cantrell, Robert E. Halvachs, Frank W. Moser, David W. Berberich, Peter X. Wang
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Patent number: 8624030Abstract: The present invention provides processes for the demethylation of an N-methyl morphinan comprising a ketone functional group. In particular, the invention provides methods for the protection of the ketone functional group such that impurities are not generated during the demethylation of the N-methyl morphinan.Type: GrantFiled: August 3, 2011Date of Patent: January 7, 2014Assignee: Mallinckrodt LLCInventors: Peter X. Wang, Tao Jiang, David W. Berberich, Subo Liao
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Publication number: 20140004188Abstract: The present invention provides a new forms of (R)—N-methylnaltrexone, and compositions thereof, useful as a peripheral mu opioid receptor antagonist.Type: ApplicationFiled: November 21, 2012Publication date: January 2, 2014Inventors: Progenics Pharmaceuticals, Inc., Wyeth, LLC
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Publication number: 20130345251Abstract: 8-Substituted-2,6-methano-3-benzazocines of general structure are useful as analgesics, anti-diarrheal agents, anticonvulsants, antitussives and anti-addiction medications.Type: ApplicationFiled: August 23, 2013Publication date: December 26, 2013Applicant: Rensselaer Polytechnic InstituteInventor: Mark P. WENTLAND
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Publication number: 20130323286Abstract: This invention relates to stereoselective synthesis of R-MNTX and intermediates thereof, pharmaceutical preparations comprising R-MNTX or intermediates thereof and methods for their use.Type: ApplicationFiled: November 7, 2012Publication date: December 5, 2013Applicant: PROGENICS PHARMACEUTICALS, INC.Inventor: Progenics Pharmaceuticals, Inc.
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Patent number: 8598352Abstract: Method for producing nalmefene hydrochloride from naltrexone, which method is particular well adapted for large-scale industrial application, and has been found to be efficient, to give a high yield and to afford highly pure nalmefene hydrochloride salt.Type: GrantFiled: May 21, 2010Date of Patent: December 3, 2013Assignee: H. Lundbeck A/SInventors: Carla De Faveri, Mauro Casarin, Michele Brusegan
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Patent number: 8580963Abstract: The present invention relates to an improved process for producing naltrexone[17-(cyclopropylmethyl)-4,5?-epoxy-3,14-dihydroxy-morphinan-6-one] from noroxymorphone[4,5-?-epoxy-3,14-dihydroxy-morphinan-6-one] by alkylation with a cyclopropylmethyl halide.Type: GrantFiled: November 2, 2011Date of Patent: November 12, 2013Assignee: H. Lundbeck A/SInventors: Carla De Faveri, Florian Anton Martin Huber, Mariano Stivanello
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Publication number: 20130296570Abstract: This invention relates to synthesis of (R),(R)-2,2?-bis-MNTX, as shown in Formula (I), and related methods and products.Type: ApplicationFiled: June 6, 2013Publication date: November 7, 2013Inventors: Alfred A. Avey, Julio Perez
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Patent number: 8563721Abstract: The present invention relates to morphinan derivatives and preparation methods thereof, especially to ketal hydroxyl protected compounds of morphinan derivatives and preparation method thereof, and to a method for preparing corresponding alkylated morphinan derivatives by using the ketal hydroxyl protected compounds as intermediates, and more especially to a ketal hydroxyl protected compound of methylnaltrexone as intermediate for preparing methylnaltrexone and a method for preparing methylnaltrexone through said intermediate.Type: GrantFiled: June 19, 2009Date of Patent: October 22, 2013Assignee: Chongqing Pharmaceutical Research Institute Co., Ltd.Inventors: Huafu Sun, Jie Luo, Wenrun Ye, Jie Deng, Bo Lin, Chunyan Dan, Bin Fan
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Patent number: 8563571Abstract: The present invention is directed to crystalline forms of oxymorphone hydrochloride.Type: GrantFiled: July 21, 2011Date of Patent: October 22, 2013Assignee: Noramco, Inc.Inventors: Karen S. Gushurst, Leonard J. Chyall, Lien H. Koztecki, Brenton Skylar Wolfe