Patents by Inventor Paolo DeWitt

Paolo DeWitt 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).

  • Patent number: 4593043
    Abstract: A novel class of mercapto acyl-carnitines is disclosed, wherein the mercapto acyl radical is the radical of saturated mercapto acids having from 2 to 10 carbon atoms. These mercapto acyl-carnitines are prepared, e.g., by first preparing the corresponding halogen acyl-carnitine and then substituting therein, by nucleophylic substitution, the --SH group for the halogen atom.These mercapto acyl-carnitines are useful therapeutic agents, e.g., for the treatment of intoxications and burns and as mucolytic agents. Dithio diacyl carnitines and hydrochloride salts thereof, which are intermediates, are also disclosed.
    Type: Grant
    Filed: March 19, 1982
    Date of Patent: June 3, 1986
    Assignee: Sigma-Tau Industrie Farmaceutiche Riunite S.p.A.
    Inventors: Maria O. Tinti, Emma Quaresima, Carlo Bagolini, Paolo DeWitt
  • Patent number: 4567200
    Abstract: A novel class of esters of mercapto acyl-carnitines is disclosed, wherein the mercapto acyl radical is the radical of saturated mercapto acids having from 2 to 10 carbon atoms. These esters of mercapto acyl-carnitines are prepared e.g. by first preparing the corresponding ester of halogen acyl-carnitine and then substituting therein, by nucleophylic substitution, the --SH group for the halogen atom.These esters of mercapto acyl-carnitines are useful therapeutic agents, e.g. for the treatment of intoxications and burns, and as mucolytic agents.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: January 28, 1986
    Assignee: Sigma-Tau Industrie Farmaceutiche Riunite S.p.A.
    Inventors: Maria O. Tinti, Emma Quaresima, Carlo Bagolini, Paolo deWitt
  • Patent number: 4254053
    Abstract: A process for manufacturing the D camphorate of L carnitinamide and the D camphorate of D carnitinamide is disclosed, wherein D,L carnitinamide hydrochloride is converted to D,L carnitinamide free base which directly reacts with D camphoric acid either as an aqueous suspension or in solid form, thus obtaining a solution of D camphorate of D,L carnitinamide. The resolution of the optical isomers is achieved by drying this solution and taking up the residue with isopropanol, whereupon the D camphorate of L carnitinamdide crystallizes out of the isopropanol solution and the D camphorate of D carnitinamide remains in solution.
    Type: Grant
    Filed: July 6, 1979
    Date of Patent: March 3, 1981
    Assignee: Claudio Cavazza
    Inventors: Paolo deWitt, Enrico Diamanti
  • Patent number: 4240984
    Abstract: A process for preparing aromatic aldehydes starting from the corresponding aromatic acid, comprising two steps, the first one consisting of the reaction of said acid with ethyl or isobutyl chlorocarbonate to obtain the corresponding anhydride, and the second one to hydrogenate the thus-obtained anhydride to yield to aldehyde.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: December 23, 1980
    Assignee: Sigma-Tau Industrie Farmaceutiche Riunite S.p.A.
    Inventors: Paolo deWitt, Maria O. Tinti
  • Patent number: 4239702
    Abstract: Process for the production of aromatic alcohol and aldehydes comprising three steps, the first one consisting of reacting an aromatic acid with ethyl or isobutyl chloroformiate to obtain the corresponding mixed anhydride, the second one consisting of the hydrogenation of the mixed anhydride to obtain the corresponding benzyl alcohol, and the third one consisting of the oxidation of the alcohol to the corresponding aldehyde.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: December 16, 1980
    Assignee: Sigma-Tau Industrie Farmaceutiche Riunite S.p.A.
    Inventors: Paolo deWitt, Maria O. Tinti
  • Patent number: 4167572
    Abstract: N-6-chloronicotinoyl-d,l-homocysteine thiolactone of the formula ##STR1## and method for its preparation are described. The compound has antilipolytic activity and is useful in compositions for treatment of conditions of elevated free fatty acid and triglyceride plasma levels.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: September 11, 1979
    Assignee: SIGMA-TAU Industrie Farmaceutiche Riunite S.p.A.
    Inventors: Paolo DeWitt, Maria T. Ramacci