VERFAHREN ZUR ASYMMETRISCHEN SYNTHESE VON S- ACYLIERTEN DERIVATEN VON 2-MERCAPTOMETHYL-3- PHENYLPROPIONSÄURE UND DEREN VERWENDUNG ZUR SYNTHESE VON N-MERCAPTOACYL AMINOSÄURE-DERIVATEN

• Main Authors: DANVY, DENIS, LECOMTE, JEANNE-MARIE, DUHAMEL, LUCETTE, MONTEIL, THIERRY, GROS, CLAUDE, SCHWARTZ, JEANARLES, PLAQUEVENT, JEANRISTOPHE, DUHAMEL, PIERRE, NOEL-LEFEBRVRE, NADINE
• Format: Patent
• Language: German
• Published: 15.05.2000
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; BEER; BIOCHEMISTRY; CHEMISTRY; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; GENERAL METHODS OF ORGANIC CHEMISTRY; METALLURGY; MICROBIOLOGY; MUTATION OR GENETIC ENGINEERING; ORGANIC CHEMISTRY; SPIRITS; VINEGAR; WINE

PCT No. PCT/FR97/00218 Sec. 371 Date Nov. 26, 1997 Sec. 102(e) Date Nov. 26, 1997 PCT Filed Feb. 4, 1997 PCT Pub. No. WO97/29086 PCT Pub. Date Aug. 14, 1997Process for the asymmetric synthesis of S-acyl derivatives of 2-mercaptomethyl-3-phenylpropanoic acid of formula (I): characterized in that it comprises the steps consisting in: a) preparing the diol (VI) by reduction of a malonic ester (V) in the presence of a hydride; b) preparing the monoacetates (VII R) or (VII S) respectively; c) subjecting these monoacetates to an oxidation in order to form the acids (IX S) or (IX R); d) saponifying the compounds (IX S) or (IX R) in order to form the hydroxy acids (X S) or (X R); e) thioacylating the hydroxy acids (X S) or (X R) with a mercapto acid R1SH (XI), according to a Mitsunobu-type reaction, in order to lead to the desired acids (I R) (I S) respectively and application to the synthesis of N-(mercaptoacyl)amino acid derivatives (II).