(1aR,2aR,4S,5aS,6aS)-Octahydro-1-oxa-5-aza-cyclopropa[f]indene-4,5-dicarboxylic acid 5-tert-butyl ester 4-methyl ester

(2S,3aS,7aR)-7a-Allyl-octahydro-indole-2-carboxylic acid methyl ester

(2S,3aS,7aS)-octahydroindole-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester

(2S,3aS,7aR,S)-7a-methoxyoctahydroindole-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester

(2S,3aS,7aR)-7a-Allyl-octahydro-indole-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester