Patents by Inventor Antonio Ugolini

Antonio Ugolini 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).

  • Process for the preparation of propionic acid derivatives
    Patent number: 5081277
    Abstract: Process for the preparation of compounds of the general formula (I) ##STR1## wherein R is hydrogen or (C.sub.1-4)alkyl.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: January 14, 1992
    Assignee: Synthelabo
    Inventors: Guy Rossey, Antonio Ugolini, Isaac Chekroun, Abkar Vartanian, Alexander Wick
  • Method of preparing (+)-(2S,3S)-3-hydroxy-2-(4-methoxyphenyl)2,3-dihydro-5H-1,5-benzothiazep ine-4-one
    Patent number: 5013835
    Abstract: 2-Aminothiophenol is reacted with (-)-(2R,3S)-2,3-epoxy-3-(4-methoxyphenyl) methylpropionate, and the intermediate (2S,3S)-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl) methylpropionate is then cyclized in the presence of methane sulfonic acid, in the same container and without isolating said intermediate product, using chlorobenzene as a solvent.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: May 7, 1991
    Assignee: Synthelabo
    Inventors: Guy Rossey, Isaac Chekroun, Antonio Ugolini, Alexander Wick, Bernard Gerin, Andre Bourbon, Jean-Baptiste Graux
  • Process for the preparation of methyl (+)-(2S,3S)-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)-propio nates
    Patent number: 5008434
    Abstract: A process for the preparation of a methyl (+)-(2S,3S)-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)propionat e of the formula (I): ##STR1## in which X denotes hydrogen or chlorine, which process comprises reacting a 2-aminothiophenol of formula (II): ##STR2## in which X is as defined above, with methyl (-)-(2R,3S)-2,3-epoxy-3-(4-methoxyphenyl)propionate, in a 1,2-dichloroethane solvent.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: April 16, 1991
    Assignee: Synthelabo
    Inventors: Guy Rossey, Antonio Ugolini, Isaac Chekroun, Abkar Vartanian, Alexander Wick