Structure of (–)-2,9-dihydroxyverrucosane, a novel carbon skeletal diterpenoid from the liverwort Mylia verrucosa

A novel cabon skeletal diterpene diol isolated from the liverwort Mylia verrucosa has been shown to have the structure (1), containing a novel fused 3,6,6,5-tetracyclic ring system, on the basis of chemical and spectral evidence.