title: Synthesis of a benzo(a)fluorenone lactone related to etiojervine.
mesh_terms: D005449:Fluorenes / Q000138:chemical synthesis*; D007192:Indenes / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D009281:Naphthalenes / Q000138:chemical synthesis*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005449:Fluorenes; D007192:Indenes; D009281:Naphthalenes