title: Denial of the proposed structure of salamander alkaloid, cycloneosamandaridine. Total synthesis of cycloneosamandione and supposed cycloneosamandaridine.
mesh_terms: D000470:Alkaloids / Q000138:chemical synthesis*; D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D014562:Caudata
chemical_list: D000470:Alkaloids