[EN] PROCESSES FOR THE SYNTHESIS OF (2S, 3AR, 7AS)-OCTAHYDRO-1H-INDOLE CARBOXYLIC ACID AS AN INTERMEDIATE FOR TRANDOLAPRIL [FR] PROCÉDÉS DE SYNTHÈSE D'ACIDE (2S, 3AR, 7AS)-OCTAHYDRO-1H-INDOLE CARBOXYLIQUE COMME INTERMÉDIAIRE POUR LE TRANDOLAPRIL
[EN] PROCESSES FOR THE SYNTHESIS OF (2S, 3AR, 7AS)-OCTAHYDRO-1H-INDOLE CARBOXYLIC ACID AS AN INTERMEDIATE FOR TRANDOLAPRIL [FR] PROCÉDÉS DE SYNTHÈSE D'ACIDE (2S, 3AR, 7AS)-OCTAHYDRO-1H-INDOLE CARBOXYLIQUE COMME INTERMÉDIAIRE POUR LE TRANDOLAPRIL
[EN] A METHOD FOR THE PREPARATION OF (2S, 3AR, 7AS)-OCTAHYDRO-1H-INDOLE-2-CARBOXYLIC ACID AS KEY INTERMEDIATE IN THE PREPARATION OF TRANDOLAPRIL BY REACTING A CYCLOHEXYL AZIRIDINE WITH A DIALKYL MALONATE<br/>[FR] PROCEDE DE PREPARATION DE (2S, 3AR, 7AS)-OCTAHYDRO-1H-INDOLE-2-ACIDE CARBOXYLIQUE EN TANT QU'INTERMEDIAIRE DANS LA PREPARATION DE TRANDOLAPRIL PAR REACTION D'UN CYCLOHEXYL AZIRIDINE AVEC UN DIALKYL MALONATE
申请人:TEXCONTOR ETS
公开号:WO2005054194A1
公开(公告)日:2005-06-16
A method for the synthesis of a compound of formula (I) as a mixture of enantiomers, formula (I) (wherein R1 is H or an acid protective group and H+A- indicates an optional acid with which the compound of formula (I) may form an ammonium salt) said method comprising; A) reacting a cyclohexyl aziridine with a dialkyl malonate, whereby to provide a trans-fused 3-alkylcarbonyl-octahydro-indol-2-one; B) decarbonylation at the 3-position, conversion of the ketone of the resulting trans-octahydro-indol-2-one to an optionally protected carboxylic acid group; and C) optionally removing any N-substitution if necessary.