3-((Z)-4-Hydroxy-but-2-enyl)-6-isopropyl-azulene-1-carboxylic acid methyl ester

3-((E)-4-Bromo-but-2-enyl)-6-isopropyl-azulene-1-carboxylic acid methyl ester

3-((E)-4-Benzenesulfonylamino-but-2-enyl)-6-isopropyl-azulene-1-carboxylic acid methyl ester

3-[(Z)-4-(tert-Butyl-dimethyl-silanyloxy)-but-2-enyl]-6-isopropyl-azulene-1-carboxylic acid methyl ester

6-Isopropyl-3-(4-amino)butyl-azulene-1-carboxylic acid methyl ester