Patents by Inventor Ernesto Duran Lopez

Ernesto Duran Lopez 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).

  • Publication number: 20230167203
    Abstract: This invention relates to a process for preparing Sugammadex or its salts, preferably Sugammadex sodium, with a low content of organic solvents, preferably water-miscible organic solvents, more preferably ethanol, 2-propanol and/or acetone. The process comprises exposing Sugammadex or its salts, preferably Sugammadex sodium, to a medium with a high relative humidity.
    Type: Application
    Filed: January 13, 2021
    Publication date: June 1, 2023
    Applicant: MEDICHEM, S.A.
    Inventors: Jordi PUIG SERRANO, Ernesto DURAN LÓPEZ, Jordi MARKALAIN BARTA, Joana Raquel FERREIRA DA COSTA
  • Patent number: 11225457
    Abstract: The present invention is related to a process for preparing safinamide and salts thereof, preferably safinamide methanesulfonate, with high yields and high enantiomeric and chemical purity without the need of using highly pure intermediates. The process of the present invention is suitable for the production of safinamide and its salts, preferably safinamide methanesulfonate, at industrial scale.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: January 18, 2022
    Assignee: MEDICHEM, S.A.
    Inventors: Yisong Wen, David Font Gimbernat, Ernesto Durán López
  • Patent number: 11104746
    Abstract: This invention relates to an improved process for the synthesis of Sugammadex or a salt thereof, to Sugammadex or a salt thereof having high purity as obtained by said process and to pharmaceutical compositions comprising said high purity Sugammadex or a salt thereof.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: August 31, 2021
    Assignee: Medichem, S.A.
    Inventors: Jordi Puig Serrano, Jordi Bosch I Llado, Iteng Ng Choi, Ernesto Duran López
  • Patent number: 11001574
    Abstract: The present invention relates to a process for preparing lifitegrast or a salt thereof, wherein the process comprises hydrogenation of compound II in a mixture comprising at least one solvent selected from the group consisting of acetonitrile, a ketone solvent, an ester solvent and a mixture thereof, preferably acetonitrile.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: May 11, 2021
    Assignee: Medichem S.A.
    Inventors: Zhu Bin, Rao Lingxiang, Jordi Puig Serrano, Ernesto Durán López
  • Publication number: 20210040033
    Abstract: The present invention is related to a process for preparing safinamide and salts thereof, preferably safinamide methanesulfonate, with high yields and high enantiomeric and chemical purity without the need of using highly pure intermediates. The process of the present invention is suitable for the production of safinamide and its salts, preferably safinamide methanesulfonate, at industrial scale.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 11, 2021
    Inventors: Yisong WEN, David FONT GIMBERNAT, Ernesto DURÁN LÓPEZ
  • Publication number: 20200377621
    Abstract: This invention relates to an improved process for the synthesis of Sugammadex or a salt thereof, to Sugammadex or a salt thereof having high purity as obtained by said process and to pharmaceutical compositions comprising said high purity Sugammadex or a salt thereof.
    Type: Application
    Filed: November 26, 2018
    Publication date: December 3, 2020
    Applicant: MEDICHEM, S.A.
    Inventors: Jordi PUIG SERRANO, Jordi BOSCH I LLADO, Iteng NG CHOI, Ernesto DURAN LÓPEZ
  • Publication number: 20200369651
    Abstract: The present invention relates to a process for preparing lifitegrast or a salt thereof, wherein the process comprises hydrogenation of compound II in a mixture comprising at least one solvent selected from the group consisting of acetonitrile, a ketone solvent, an ester solvent and a mixture thereof, preferably acetonitrile.
    Type: Application
    Filed: November 16, 2018
    Publication date: November 26, 2020
    Inventors: Zhu BIN, Rao LINGXIANG, Jordi PUIG SERRANO, Ernesto DURÁN LÓPEZ
  • Patent number: 9086390
    Abstract: The present invention relates to dabigatran etexilate and related substances and use of the substances as reference standards and markers. There are also provided processes of detecting the substances in samples of dabigatran etexilate, or pharmaceutically acceptable salts or solvates thereof, and also for analyzing the purity of samples of dabigatran etexilate, or pharmaceutically acceptable salts or solvates thereof. There are still further provided processes of preparing dabigatran etexilate and related substances, and pharmaceutical compositions containing the same.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: July 21, 2015
    Assignee: Medichem, S.A.
    Inventors: Judit Serra Miralles, Ernesto Durán López, Lingxiang Rao
  • Patent number: 8946477
    Abstract: The invention relates to solid forms of the anti-epileptic agent lacosamide (I). The invention also relates to mixtures of solid forms of lacosamide. The invention further relates to mixtures of lacosamide enantiomers crystallized in a conglomerate Form and the use thereof in providing enantiomerically enriched lacosamide, preferably lacosamide enriched with the (R)-enantiomer of lacosamide.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: February 3, 2015
    Assignee: Medichem, S.A.
    Inventors: Ernesto Duran Lopez, Monica Benito Velez, Jordi Bosch i Lladó
  • Publication number: 20140076036
    Abstract: The present invention relates to dabigatran etexilate and related substances and use of the substances as reference standards and markers. There are also provided processes of detecting the substances in samples of dabigatran etexilate, or pharmaceutically acceptable salts or solvates thereof, and also for analyzing the purity of samples of dabigatran etexilate, or pharmaceutically acceptable salts or solvates thereof. There are still further provided processes of preparing dabigatran etexilate and related substances, and pharmaceutical compositions containing the same.
    Type: Application
    Filed: May 10, 2012
    Publication date: March 20, 2014
    Applicant: Medichem S.A.
    Inventors: Judit Serra Miralles, Ernesto Durán López, Lingxiang Rao
  • Patent number: 8580972
    Abstract: This invention provides improved processes for the preparation of 5-chloro-2-methyl-2,3,3a 12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrole, asenapine. These processes allow the preparation of asenapine at industrial scale in good yields and high stereoselectivity.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: November 12, 2013
    Assignee: Medichem, S.A.
    Inventors: Jordi Bosch i Lladó, Ernesto Duran Lopez
  • Publication number: 20130253187
    Abstract: The present invention relates to a process for determining the suitability for distribution of a batch of rivaroxaban or of a pharmaceutical composition thereof. In particular, it also relates to two impurities of rivaroxaban, to their use as reference markers to determine the purity of a sample of rivaroxaban or a composition thereof, to analytical methods for determining the purity of a sample of rivaroxaban or a composition thereof and to a process of preparing rivaroxaban or pharmaceutical compositions thereof which are free or substantially free of such impurities.
    Type: Application
    Filed: September 14, 2010
    Publication date: September 26, 2013
    Applicant: Medichem, S.A.
    Inventors: Bernardino Mangion, Ernesto Duran Lopez
  • Publication number: 20130131164
    Abstract: The invention relates to retigabine with improved color quality, and to processes for preparing the same. In addition, the invention relates to a process for drying wet retigabine. Also, the invention relates to stabilized or substantially stabilized retigabine in solid state, or a mixture or pharmaceutical formulation comprising the same. Further, the invention also relates to an improved process for preparing retigabine.
    Type: Application
    Filed: February 18, 2011
    Publication date: May 23, 2013
    Applicant: MEDICHEM, S.A.
    Inventors: Ernesto Duran Lopez, Jordi Bosch I Lladó, Judit Serra Miralles
  • Patent number: 8440861
    Abstract: The invention relates to solid forms of the anti-epileptic agent lacosamide (I). The invention also relates to mixtures of solid forms of lacosamide. The invention further relates to mixtures of lacosamide enantiomers crystallized in a conglomerate Form and the use thereof in providing enantiomerically enriched lacosamide, preferably lacosamide enriched with the (R)-enantiomer of lacosamide.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: May 14, 2013
    Assignee: Medichem, S.A.
    Inventors: Ernesto Duran Lopez, Monica Benito Velez, Jordi Bosch i Lladó
  • Publication number: 20130095535
    Abstract: The present invention is concerned with a process of preparing (R)-lacosamide. The process comprises providing an (R,S)-lacosamide precursor and contacting the same with at least an enzyme in the presence of a solvent. The enzyme either stereoselectively hydrolyzes or acetylates an (R)- or (S)-enantiomer of the (R,S)-lacosamide precursor. The process further comprises where appropriate also concurrently, or successively, employing one or more reagents capable of converting the hydrolysed or acetylated (R)- or (S)-enantiomer to (R)-lacosamide.
    Type: Application
    Filed: June 15, 2011
    Publication date: April 18, 2013
    Applicant: MEDICHEM, S.A.
    Inventors: Jordi Bosch i Lladó, Ernesto Durán López
  • Patent number: 8389724
    Abstract: This invention provides a novel crystalline sitagliptin ethanedisulfonate salt having the structure set forth below, and a method for using same to treat type 2 diabetes.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: March 5, 2013
    Assignee: Corporacion Medichem, S.L.
    Inventors: Stephen Benedict David Winter, Monica Benito Velez, Ernesto Duran Lopez
  • Patent number: 8288394
    Abstract: The present invention relates to voriconazole, processes of preparing voriconazole, and pharmaceutical compositions and therapeutic uses thereof. In particular, the present invention also relates to voriconazole prepared from voriconazole having a substantially undefined shape and/or crystal habit. The invention further relates to voriconazole having a modified sphericity factor and/or specific surface area and/or Sauter diameter compared to voriconazole known from the prior art.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: October 16, 2012
    Assignee: Medichem, S.A.
    Inventors: Ernesto Duran Lopez, Juan Contreras Lascorz
  • Publication number: 20120184558
    Abstract: This invention provides novel crystalline acid salt forms of 7-[(3R)-3-amino-1-oxo-4-(2,4,5-trifluorophenyl)butyl]-5,6,7,8-tetrahydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazine, i.e. sitagliptin, to processes for their preparation and isolation, and to pharmaceutical compositions comprising the same.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 19, 2012
    Applicant: Medichem S.A.
    Inventors: Stephen Benedict David WINTER, Monica BENITO VELEZ, Ernesto DURAN LOPEZ
  • Publication number: 20120165545
    Abstract: This invention provides improved processes for the preparation of 5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrole, asenapine. These processes allow the preparation of asenapine at industrial scale in good yields and high stereoselectivity.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Applicant: Medichem, S.A.
    Inventors: Jordi BOSCH i LLADÓ, Ernesto DURAN LOPEZ
  • Patent number: 8058454
    Abstract: A process for preparing substituted pyrrolidine compounds, including (5)-2-{1-[2-(2,3-dihydrobenzofuran-5-yl)ethyl]-3-pyrrolidinyl}-2,2-diphenylacetamide hydrobromide, commonly known in the art as darifenacin, comprising reacting a pyrrolidine compound with a benzofuran derivative in the presence of a phase-transfer catalyst.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: November 15, 2011
    Assignee: Medichem, S.A.
    Inventors: Núria Soldevilla Madrid, Ernesto Durán López, Jordi Puig Serrano