(3R,4S,5S)-4-Amino-5-azido-3-butyl-cyclohex-1-enecarboxylic acid methyl ester

(3R,4S,5S)-4-Acetylamino-5-amino-3-butyl-cyclohex-1-enecarboxylic acid methyl ester

(4aR,8R,8aR)-8-Butyl-2,3-dimethoxy-2,3-dimethyl-2,3,4a,5,8,8a-hexahydro-benzo[1,4]dioxine-6-carboxylic acid methyl ester

(3R,4S,5S)-4-Acetylamino-5-azido-3-butyl-cyclohex-1-enecarboxylic acid methyl ester