methyl (2S)-2-[(5R,8R,8aR)-8-acetyloxy-3,8-dimethyl-2-oxo-1,4,5,6,7,8a-hexahydroazulen-5-yl]propanoate 在
palladium on activated charcoal 、
Wilkinson's catalyst 吡啶 、 lithium aluminium tetrahydride 、
氢气 作用下,
生成
Carbonic acid (S)-2-((3S,3aS,5R,8R,8aR)-8-hydroxy-3,8-dimethyl-decahydro-azulen-5-yl)-propyl ester methyl ester