title: Alkaline condensation of emodin to isohypericin: a simple synthesis of the meso-naphthodianthrone (phenanthro(1,10,9,8-opqra)perylene) system.
mesh_terms: D000928:Antidepressive Agents / Q000138:chemical synthesis*; D001580:Benzopyrenes / Q000138:chemical synthesis*; D002400:Cathartics; D055598:Chemical Phenomena; D002621:Chemistry; D006873:Hydroquinones
chemical_list: D000928:Antidepressive Agents; D001580:Benzopyrenes; D002400:Cathartics; D006873:Hydroquinones