The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1991
Filed:
Apr. 18, 1989
Applicant:
Inventors:
Guy Rossey, Voisins le Bretonneux, FR;
Antonio Ugolini, Le Pecq, FR;
Isaac Chekroun, Pinay, FR;
Abkar Vartanian, Meulan, FR;
Alexander Wick, St Nom la Breteche, FR;
Assignee:
Synthelabo, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560 17 ; 562431 ;
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.