Patents by Inventor Arlette Tixidre

Arlette Tixidre 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: 5929078
    Abstract: Compounds corresponding to the general formula (I): ##STR1## in which X represents a hydrogen atom, a hydroxyl group, a C.sub.1 -C.sub.3 alkoxy group or a cyclopropylmethoxy group and Y represents a hydrogen atom, a hydroxyl group or a methoxy group and salts and bases thereof. The compounds may exists in the form of a pure enantiomer or as a mixture of enantiomers. Additionally, the compounds of formula (I) are useful for the treatment of diseases associated with serotoninergic receptors, particularly anxiety and/or depression.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: July 27, 1999
    Assignee: Synthelabo
    Inventors: Pascal George, Mireille Sevrin, Philippe Manoury, Michel Peynot, Daniele De Peretti, Jean Fran.cedilla.ois Gibert, Arlette Tixidre, David Machnik
  • Patent number: 5716841
    Abstract: A process for the preparation of ethyl 4,4,4-trifluoro-3(R)-hydroxybutanoate, wherein the ester functional group of the (S) enantiomer of ethyl (.+-.)-4,4,4-trifluoro-3-hydroxybutanoate which comprises (R) and (S) is selectively hydrolysed in aqueous medium, by means of a lipase, and the non-hydrolysed (R) enantiomer is then extracted and used in the preparation of 4,4,4-trifluoro-1,3(R)-butanediol.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: February 10, 1998
    Assignee: Synthelabo
    Inventors: Arlette Tixidre, Lydia Zard, Guy Rossey, Andre Bourbon
  • Patent number: 5677168
    Abstract: Process for the preparation of one or both enantiomers of 1-(4-chlorophenyl)-2-chloroethanol, which comprises an enantioselective enzymatic hydrolysis of (.+-.)-.alpha.-(4-chlorophenyl)chloroethyl acetate by means of an enzyme which is horse liver acetone powder, lipase PS from Pseudomonas fluorescens, lipase AK from Pseudomonas or the lipase from Candida antarctica, to give a mixture of unhydrolysed R-(-)-.alpha.-(4-chlorophenyl)chloroethyl acetate and S-(+)-1-(4-chlorophenyl)-2-chloroethanol, and optional separation of R-(-)-.alpha.-(4-chlorophenyl)chloroethyl acetate and optional hydrolysis of it to give R-(-)-1-(4-chlorophenyl)-2-chloroethanol and use of the enantiomers of 1-(4-chlorophenyl)-2-chlorethanol for the preparation of the enantiomers of eliprodil and of their salts.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: October 14, 1997
    Assignee: Synthelabo
    Inventors: Lydia Zard, Arlette Tixidre
  • Patent number: 5244901
    Abstract: The present invention provides a compound which is a 4-pyrimidinecarboxamide derivative of general formula (I) ##STR1## in which X represents one or more substituents independently chosen from fluorine, chlorine, methoxy and cyclopropyl,R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, andR.sub.2 represents a hydrogen atom or a methyl group, or a pharmaceutically acceptable acid addition salt thereof; their preparation and their application in therapy.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: September 14, 1993
    Assignee: Synthelabo
    Inventors: Pascal George, Jacques Froissant, Arlette Tixidre
  • Patent number: 5169779
    Abstract: A process for the preparation of methyl (-)-(2R,3S)-2,3-epoxy-3-(4-methoxyphenyl)propionate, which comprises subjecting the dextrorotatory (2S,3R) enantiomer, present in a starting mixture containing both the levorotatory (2R,3S and dextrorotatory (2S,3R) enantiomers, to a transesterification reaction, in an anhydrous medium and in the presence of an enzyme which does not affect the levorotatory (2R,3S) enantiomer. The latter is an intermediate for the synthesis of compounds such as Diltiazem.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: December 8, 1992
    Assignee: Synthelabo
    Inventors: Lydia Zard, Arlette Tixidre, Guy Rossey, Alexander Wick
  • Patent number: 4925850
    Abstract: A compound of formula (I): ##STR1## in which: X is hydrogen or a methyl or methoxy group;Y is a halogen or a methyl or methoxy group; andR is a group of formula --Z--R' in which:Z is a --CH.sub.2 -- group, andR' is a phenyl group unsubstituted or substituted by one, two or three substituents selected from halogen atoms and trifluoromethyl, linear or branched (C.sub.1 -C.sub.3) alkyl and linear or branched (C.sub.1 -C.sub.3) alkoxy groups;or a pharmacologically acceptable acid addition salt thereof.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: May 15, 1990
    Assignee: Synthelabo
    Inventors: Pascal George, Mireille Sevrin, Christian Maloizel, Arlette Tixidre, Jacques Froissant