Patents by Inventor David Alexander Learmonth

David Alexander Learmonth 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: 20140045900
    Abstract: A compound of formula (I) where R1, R2, X, Y, n, m, R3, R4, R5, R6 and R7 are as defined herein, for use in the prophylaxis or treatment of a central and peripheral nervous system disorder, wherein the compound of formula (I) is administered prior to sleep, before bedtime or at bedtime.
    Type: Application
    Filed: October 12, 2011
    Publication date: February 13, 2014
    Applicant: Bial-Portela & CA, S.A.
    Inventors: Patricio Manuel Vieira Araujo Soares Da Silva, Teresa Lucia Silva Pereira Nunes, Lyndon Christopher Wright, Pedro Nuno Leal Palma, David Alexander Learmonth
  • Publication number: 20140031561
    Abstract: The present invention relates to crystalline Form A of 1-[(3R)-6,8-difluoro-3,4-dihydro-2H-1-benzopyran-3-yl]-1,3-dihydro-5-[2-[(phenylmethyl)amino]ethyl]-2H-imidazole-2-thione and crystalline Form B of 1-[(3R)-6,8-difluoro-3,4-dihydro-2H-1-benzopyran-3-yl]-1,3-dihydro-5-[2-[(phenylmethyl)amino]ethyl]-2H-imidazole-2-thione, processes for preparing the forms and their uses in medicine. The present invention also relates to the amorphous form of 1-[(3R)-6,8-difluoro-3,4-dihydro-2H-1-benzopyran-3-yl]-1,3-dihydro-5-[2-[(phenylmethyl)amino]ethyl]-2H-imidazole-2-thione processes for preparing it and its uses in medicine.
    Type: Application
    Filed: June 19, 2013
    Publication date: January 30, 2014
    Inventors: Alexander BELIAEV, David Alexander LEARMONTH, Brian BROADBELT, Ekaterina ALBERT, Patricia ANDRES
  • Publication number: 20140024682
    Abstract: This invention relates to novel substituted nitrocatechol derivatives, their use in the treatment of some central and peripheral nervous system disorders and pharmaceutical compositions containing them.
    Type: Application
    Filed: August 30, 2013
    Publication date: January 23, 2014
    Applicant: BIAL - PORTELA & CA, S.A.
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patricio Manuel V. A. Soares da Silva
  • Publication number: 20130345275
    Abstract: Compounds of formula I and a method for their preparation are described: where R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, nitro, amino, alkylcarbonylamino, alkylamino or dialkylamino group; R4 signifies -alkyl-aryl or -alkyl-heteroaryl; X signifies CH2, oxygen atom or sulphur atom; n is 2 or 3; including the individual (R)- and (S)-enantiomers or mixtures of enantiomers thereof; and including pharmaceutically acceptable salts and esters thereof. The compounds have potentially valuable pharmaceutical properties for the treatment of cardiovascular disorders such as hypertension and chronic heart failure.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 26, 2013
    Inventors: Patricio Manuel Vieira Araujo Soares Da Silva, David Alexander Learmonth, Alexander Beliaev
  • Publication number: 20130331416
    Abstract: The invention relates to the use of an oxodiazolyl compound (I) for the preparation of a medicament for the prevention or treatment of central and peripheral nervous system associated disorders, wherein said medicament is administered according to a dosing regimen having a dosing periodicity ranging from about twice a day to about once every other day.
    Type: Application
    Filed: July 25, 2013
    Publication date: December 12, 2013
    Applicant: BIAL - PORTELA & CA, S.A.
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patricio Manuel Vieira Araujo Soares da Silva
  • Publication number: 20130324578
    Abstract: A compound of formula (I) where R1, R2, X, Y, n, m, R3, R4, R5, R6 and R7 are as defined herein, for use in the prophylaxis or treatment of a central and peripheral nervous system disorder, wherein the compound of formula (I) is administered prior to sleep, before bedtime or at bedtime.
    Type: Application
    Filed: August 9, 2013
    Publication date: December 5, 2013
    Applicant: BIAL - PORTELA & CA, S.A.
    Inventors: Patricio Manuel Vieira Araujo SOARES DA SILVA, Teresa Lucia Silva Pereira NUNES, Lyndon Christopher WRIGHT, Pedro Nuno Leal PALMA, David Alexander LEARMONTH
  • Patent number: 8546571
    Abstract: A process for preparing the S or R enantiomer of a compound of formula A, the process comprising subjecting a compound of formula B to asymmetric hydrogenation in the presence of a chiral catalyst and a source of hydrogen, wherein: X is CH2, oxygen or sulphur; R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group; and R4 is alkyl or aryl, wherein: the term alkyl means hydrocarbon chains, straight or branched, containing from one to six carbon atoms, optionally substituted by aryl, alkoxy, halogen, alkoxycarbonyl or hydroxycarbonyl groups; the term aryl means a phenyl or naphthyl group, optionally substituted by alkyloxy, halogen or nitro group; and the term halogen means fluorine, chlorine, bromine or iodine.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: October 1, 2013
    Assignee: BIAL—Portela & C.A., S.A.
    Inventors: David Alexander Learmonth, Antonio Zanotti-Gerosa, Gabriela Alexandra Grasa, Alexander Beliaev
  • Patent number: 8536203
    Abstract: This invention relates to novel substituted nitrocatechol derivatives, their use in the treatment of some central and peripheral nervous system disorders and pharmaceutical compositions containing them.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: September 17, 2013
    Assignee: Bial-Portela & CA, S.A.
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto Dos Santos Ferreira, Patricio Manuel Vieira Araujo Soares da Silva
  • Patent number: 8524746
    Abstract: The invention relates to the use of an oxodiazolyl compound (I) for the preparation of a medicament for the prevention or treatment of central and peripheral nervous system associated disorders, wherein said medicament is administered according to a dosing regimen having a dosing periodicity ranging from about twice a day to about once every other day.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: September 3, 2013
    Assignee: Bial-Portela & Ca., S.A.
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patricio Manuel Vieira Araujo Soares da Silva
  • Patent number: 8481582
    Abstract: Compounds of formula I and a method for their preparation are described: where R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, nitro, amino, alkylcarbonylamino, alkylamino or dialkylamino group; R4 signifies -alkyl-aryl or -alkyl-heteroaryl; X signifies CH2, oxygen atom or sulphur atom; n is 2 or 3; including the individual (R)- and (S)-enantiomers or mixtures of enantiomers thereof; and including pharmaceutically acceptable salts and esters thereof. The compounds have potentially valuable pharmaceutical properties for the treatment of cardiovascular disorders such as hypertension and chronic heart failure.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: July 9, 2013
    Assignee: Bial-Portela & CA, S.A.
    Inventors: Patrício Manuel Vieira Araújo Soares Da Silva, David Alexander Learmonth, Alexander Beliaev
  • Publication number: 20130123493
    Abstract: A process for preparing a substitute urea of Formula (II) or Formula (I), or a pharmaceutically acceptable salt or ester thereof, Formula (II): Formula (I): the process comprising the reaction of a carbamate of Formula (II?): or formula (I?): with a primary or secondary amine of the formula: R1R2NH, wherein ring A, and R1, R2, R5, V, W, X, Y and Z are as defined herein.
    Type: Application
    Filed: July 28, 2011
    Publication date: May 16, 2013
    Applicant: BIAL - PORTELA & CA, S.A.
    Inventors: David Alexander Learmonth, Brian Broadbelt, Jorge Bruno Reis Wahnon
  • Patent number: 8367821
    Abstract: A process for preparing a compound of the formula IA or IB: wherein R is alkyl, aminoalkyl, halogenalkyl, aralkyl, cycloalkyl, cycloalkylalkyl, alkoxy, phenyl or substituted phenyl or pyridyl group; the term alkyl means carbon chain, straight or branched, containing from 1 to 18 carbon atoms; the term halogen represents fluorine, chlorine, bromine or iodine; the term cycloalkyl represents a saturated alicyclic group with 3 to 6 carbon atoms; the term aryl represents unsubstituted phenyl group or phenyl substituted by alkoxy, halogen or nitro group, the process comprising asymmetric hydrogenation of a compound of the formula II: wherein R has the same meanings as above, using a chiral catalyst and a source of hydrogen.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: February 5, 2013
    Assignee: BIAL—Portela & C.A., S.A.
    Inventors: Bing Yu, Wenge Li, David Alexander Learmonth
  • Patent number: 8288532
    Abstract: A process for preparing (S)-(+)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide or (R)-(?)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide, by reduction of oxcarbazepine in the presence of a catalyst and a hydride source is disclosed. The catalyst is prepared from a combination of [RuX2(L)]2 wherein X is chlorine, bromine or iodine, and L is an aryl or aryl-aliphatic ligand, with a ligand of formula (A) or formula (B): wherein R1 is chosen from C1-6 alkoxy and C1-6 alkyl, n is a number from 0 to 5, and when n is a number from 2 to 5, R1 can be the same or different, and R2 is alkyl, substituted alkyl, aryl, substituted aryl, alkaryl or substituted alkaryl. The hydride source is either NR3R4R5 and formic acid, [R3R4R5NH][OOCH] and optionally formic acid, or [M][OOCH]x and formic acid, wherein R3, R4 and R5 are C1-6 alkyl, M is an alkali metal or alkaline earth metal and x is 1 or 2. A pH from 6.5 to 8 is maintained during the process.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: October 16, 2012
    Assignee: Bial-Portela & CA., S.A.
    Inventors: David Alexander Learmonth, Gabriela Alexandra Grasa, Antonio Zanotti-Gerosa
  • Publication number: 20120196904
    Abstract: New compounds of formula I are described. The compounds have potentially valuable pharmaceutical properties in the treatment of some central and peripheral nervous system disorders.
    Type: Application
    Filed: April 9, 2012
    Publication date: August 2, 2012
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto Dos Santos Ferreira, Patricio Manuel Vieira Araújo Soares da Silva
  • Patent number: 8168793
    Abstract: New compounds of formula I are described. The compounds have potentially valuable pharmaceutical properties in the treatment of some central and peripheral nervous system disorders.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: May 1, 2012
    Assignee: Portela & CA., S.A.
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto Dos Santos Ferreira, Patricio Manuel Vieira Araújo Soares da Silva
  • Patent number: 8158666
    Abstract: A process for making (R)-5-(2-aminoethyl)-1-(6,8-difluorochroman-3-yl)-1,3-dihydroimidazole-2-thione and pharmaceutically acceptable salts thereof, and for making intermediates useful in the formation of said compound.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: April 17, 2012
    Assignee: Bial-Portela & C.A., S.A.
    Inventors: Patrício Manuel Vieira Araújo Soares Da Silva, Alexander Beliaev, David Alexander Learmonth
  • Publication number: 20120065191
    Abstract: The invention relates to compounds and compositions for inhibiting the enzyme fatty acid amide hydrolase (FAAH), the use of the compounds in therapy and, in particular, for treating or preventing conditions whose development or symptoms are linked to substrates of the FAAH enzyme, and methods of treatment or prevention using the compounds and compositions.
    Type: Application
    Filed: December 23, 2009
    Publication date: March 15, 2012
    Applicant: BIAL - PORTELA & Cª, S.A.
    Inventors: Laszlo Erno Kiss, David Alexander Learmonth, Carla Patrícia da Costa Pereira Rosa, Rita Gusmão de Noronha, Pedro Nuno Leal Palma, Patrício Manuel Vieira Araújo Soares da Silva, Alexander Beliaev
  • Publication number: 20110301204
    Abstract: The present invention relates to novel dosage regimens for compounds of formula I: where the substituents are as defined in the specification.
    Type: Application
    Filed: July 29, 2009
    Publication date: December 8, 2011
    Applicant: BIAL - PORTELA & CA., S.A.
    Inventors: José Luis de Almeida, David Alexander Learmonth, Patricio Manuel Vieira Araújo Soares da Silva
  • Publication number: 20110237803
    Abstract: A process for preparing the S or R enantiomer of a compound of formula A, the process comprising subjecting a compound of formula B to asymmetric hydrogenation in the presence of a chiral catalyst and a source of hydrogen, wherein X is CH2, oxygen or sulphur; R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group; and R4 is alkyl or aryl, wherein the term alkyl means hydrocarbon chains, straight or branched, containing from one to six carbon atoms, optionally substituted by aryl, alkoxy, halogen, alkoxycarbonyl or hydroxycarbonyl groups; the term aryl means a phenyl or naphthyl group, optionally substituted by alkyloxy, halogen or nitro group; and the term halogen means fluorine, chlorine, bromine or iodine.
    Type: Application
    Filed: May 6, 2009
    Publication date: September 29, 2011
    Applicant: Bial - Portela & CA, S.A.
    Inventors: Alexander Beliaev, David Alexander Learmonth
  • Patent number: 7999100
    Abstract: A method for chiral inversion of optically pure or optically enriched mixtures of (S)-(+)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide (I) and (R)-(?)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide (II).
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: August 16, 2011
    Assignee: Bial-Portela CA & S.A.
    Inventors: David Alexander Learmonth, Günter Weingaertner, Matthias Kraemer