Patents Assigned to Dipharma S.p.A.
  • Publication number: 20120253047
    Abstract: The invention relates to a novel process for the preparation of (R)-2-amino-6-n-propylamino-4,5,6,7-tetrahydrobenzothiazole, or a salt thereof.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 4, 2012
    Applicant: Dipharma S.p.A.
    Inventors: Pietro ALLEGRINI, Gabriele Razzetti, Vittorio Lucchini
  • Patent number: 8203002
    Abstract: Intermediates useful for the preparation of pramipexole and the use thereof in such synthesis.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: June 19, 2012
    Assignee: Dipharma S.p.A.
    Inventors: Graziano Castaldi, Alberto Bologna, Pietro Allegrini, Gabriele Razzetti, Vittorio Lucchini
  • Patent number: 7947855
    Abstract: A process for the purification of 1,4-butanediol mononitrate from 1,4-butanediol dinitrate and 1,4-butanediol, by selective extraction with solvents is herein disclosed.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: May 24, 2011
    Assignee: Dipharma S.p.A.
    Inventors: Tiziano Scubla, Nevio Francescutti, Fausto Gorassini, Graziano Castaldi
  • Patent number: 7851649
    Abstract: A process for the preparation of compounds of formula HO-A-ONO2??(I) wherein A is a C2-C6 alkylene chain by nitration of the corresponding alkanediols with “stabilized” nitric acid is herein disclosed. The process is safer to operators and allows to obtain advantageous yields on an industrial scale.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: December 14, 2010
    Assignee: Dipharma S.p.A.
    Inventors: Nevio Francescutti, Tiziano Scubla, Fausto Gorassini, Graziano Castaldi
  • Publication number: 20100222595
    Abstract: Intermediates useful for the preparation of pramipexole and the use thereof in such synthesis.
    Type: Application
    Filed: May 10, 2010
    Publication date: September 2, 2010
    Applicant: DIPHARMA S.p.A.
    Inventors: Graziano CASTALDI, Alberto Bologna, Pietro Allegrini, Gabriele Razzetti, Vittorio Lucchini
  • Publication number: 20100216838
    Abstract: The invention relates to novel crystalline forms of fexofenadine base, a process for the preparation thereof and the use thereof in therapy.
    Type: Application
    Filed: March 23, 2010
    Publication date: August 26, 2010
    Applicant: DIPHARMA S.P.A.
    Inventors: GIANPIERO VENTIMIGLIA, Pietro Allegrini, Graziano Castaldi
  • Patent number: 7741490
    Abstract: Intermediates useful for the preparation of pramipexole and the use thereof in such synthesis.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: June 22, 2010
    Assignee: Dipharma S.p.A.
    Inventors: Graziano Castaldi, Alberto Bologna, Pietro Allegrini, Gabriele Razzetti, Vittorio Lucchini
  • Patent number: 7692027
    Abstract: A process for the preparation of telmisartan (I) and novel intermediates useful for its synthesis.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: April 6, 2010
    Assignee: Dipharma S.p.A.
    Inventors: Pietro Allegrini, Marcello Rasparini, Gabriele Razzetti, Alberto Bologna, Giuseppe Barreca
  • Publication number: 20090111853
    Abstract: The invention provides novel crystalline forms of fexofenadine hydrochloride, a process for the preparation of the novel forms and of the known form A, and their use in therapy.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 30, 2009
    Applicant: DIPHARMA S.P.A.
    Inventors: Graziano CASTALDI, Giuseppe BARRECA, Pietro ALLEGRINI, Gianpiero VENTIMIGLIA
  • Publication number: 20080293961
    Abstract: A process for the purification of 1,4-butanediol mononitrate from 1,4-butanediol dinitrate and 1,4-butanediol, by selective extraction with solvents is herein disclosed.
    Type: Application
    Filed: July 2, 2008
    Publication date: November 27, 2008
    Applicant: DIPHARMA S.P.A.
    Inventors: Tiziano Scubla, Nevio Francescutti, Fausto Gorassini, Graziano Castaldi
  • Patent number: 7439261
    Abstract: A novel process for the preparation of valsartan and novel intermediates useful in the preparation thereof.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: October 21, 2008
    Assignee: Dipharma S.p.A.
    Inventors: Giancarlo Verardo, Paola Geatti, Graziano Castaldi, Nicoletta Toniutti, Pietro Allegrini
  • Patent number: 7420091
    Abstract: A novel process for the preparation of tolterodine, i.e. (R)—N, N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3-phenylpropanamine, in the racemic form, as well as intermediates useful for its preparation.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: September 2, 2008
    Assignee: Dipharma S.p.A.
    Inventors: Gabriele Razzetti, Simone Mantegazza, Roberto Rossi, Pietro Allegrini
  • Publication number: 20080161573
    Abstract: Novel intermediates useful for the preparation of Imiquimod and a process for the preparation of Imiquimod with the intermediates.
    Type: Application
    Filed: October 16, 2007
    Publication date: July 3, 2008
    Applicant: DIPHARMA S.P.A.
    Inventors: Lino COLOMBO, Enrico Mariotti, Pietro Allegrini, Graziano Castaldi
  • Publication number: 20080146830
    Abstract: A process for the preparation of compounds of formula HO-A-ONO2 ??(I) wherein A is a C2-C6 alkylene chain by nitration of the corresponding alkanediols with “stabilised” nitric acid is herein disclosed. The process is safer to operators and allows to obtain advantageous yields on an industrial scale.
    Type: Application
    Filed: February 25, 2008
    Publication date: June 19, 2008
    Applicant: DIPHARMA S.P.A.
    Inventors: Nevio FRANCESCUTTI, Tiziano SCUBLA, Fausto GORASSINI, Graziano CASTALDI
  • Patent number: 7385062
    Abstract: A process for the preparation of phenyltetrazole derivatives of formula (II) wherein R and Y are as defined in the disclosure, by direct ortho-metallation of (tetrazol-5-?l)benzene. The compounds of formula (II) are useful intermediates for the preparation of angiotensin II antagonists.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: June 10, 2008
    Assignee: Dipharma S.p.A.
    Inventors: Graziano Castaldi, Pietro Allegrini, Gabriele Razzetti, Alberto Bologna, Marcello Rasparini, Vittorio Lucchini
  • Publication number: 20080119657
    Abstract: Novel phenyltetrazole compounds useful as intermediates in the preparation of angiotensin II antagonists and the processes for the conversion thereof to biologically active molecules.
    Type: Application
    Filed: January 29, 2008
    Publication date: May 22, 2008
    Applicant: DIPHARMA S. P. A.
    Inventors: Gabriele RAZZETTI, Domenico Magrone, Mauro Ercoli
  • Publication number: 20080097127
    Abstract: A novel process for the preparation of tolterodine, i.e. (R)—N,N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3-phenylpropanamine, in the racemic form, as well as intermediates useful for its preparation.
    Type: Application
    Filed: December 14, 2007
    Publication date: April 24, 2008
    Applicant: DIPHARMA S.P.A.
    Inventors: Gabriele Razzetti, Simone Mantegazza, Roberto Rossi, Pietro Allegrini
  • Publication number: 20080081914
    Abstract: A process for the preparation of benzo[d]isoxazol-3-yl-methanesulfonic acid of formula (I), or a salt thereof, and the intermediates thereof, useful as an intermediate in the preparation of zonisamide.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 3, 2008
    Applicant: DIPHARMA S.P.A.
    Inventors: GABRIELE RAZZETTI, SIMONE MANTEGAZZA, GRAZIANO CASTALDI, PIETRO ALLEGRINI, VITTORIO LUCCHINI, ALBERTO BOLOGNA
  • Patent number: 7345189
    Abstract: A process for the preparation of a compound of formula (I), or a salt thereof wherein R is H, C1-C8 alkyl, aryl or aryl-C1-C8 alkyl; comprising the reaction between a compound of formula (II) wherein R1 and R2 are independently hydrogen, C1-C8 alkyl, aryl, aryl-C1-C8 alkyl, or R1 and R2, taken together, form a —(CH2)m—V—(CH2)n— group, in which V is NR3 or C(R3)2 wherein R3 is hydrogen, C1-C8 alkyl, aryl or aryl-C1-C8 alkyl; and m and n, which can be the same or different, are 1 or 2; with a compound of formula (III) in which R4 and R5 are independently C1-C8 alkyl, aryl or aryl-C1-C8 alkyl; in the presence of a Ni (II) salt, an organic ligand and a basic agent, to obtain a compound of formula (I) wherein R is C1-C8 alkyl, aryl or aryl-C1-C8 alkyl and, if desired, its conversion to a compound of formula (I) wherein R is hydrogen or to a salt thereof.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: March 18, 2008
    Assignees: Dipharma S.p.A., Lundbeck Pharmaceuticals, Italy
    Inventors: Graziano Castaldi, Pietro Allegrini, Gabriele Razzetti, Mauro Ercoli
  • Patent number: 7345072
    Abstract: Novel phenyltetrazole compounds useful as intermediates in the preparation of angiotensin II antagonists and the processes for the conversion thereof to biologically active molecules.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: March 18, 2008
    Assignee: Dipharma S.p.A.
    Inventors: Gabriele Razzetti, Domenico Magrone, Mauro Ercoli