PROCESSES FOR THE PREPARATION OF 4-OXO-OCTAHYDRO-INDOLE-1-CARBOCYCLIC ACID METHYL ESTER AND DERIVATIVES THEREOF

摘要

The present invention relates to a process for the production of (3aR, 4S, 7aR)-4-hydroxy-4-m-tolylethynyl-octahydro-indole-1-carboxylic acid methyl ester (I), of carbamic acid (2-chloroethyl)(3-oxocyclohexyl)-alkyl ester enantiomers (II), and of 1-carbalkoxy-4-ketoperhydroindole enantiomers (III).