Total Synthesis of ZoanthenolDr. Eri Fukushi, Mr. Kenji Watanabe GCMS and NMR Laboratory, Graduate School of Agriculture, Hokkaido University, and Dr. Yasuhiro Kumaki HighResolution NMR Laboratory, Graduate School of Science, Hokkaido University are acknowledged for their NMR spectroscopy and mass spectrometry measurements. Financial support from the Ministry of Education, Culture, Sports, Science and Technology Japan, a GrantinAid for Scientific Research A No. 12304042, a GrantinAid for Scientific Research on Priority Areas A “Exploitation of MultiElement Cyclic Molecules” No. 13029003, and the Global COE Program Project No. B01: Catalysis as the Basis for Innovation in Materials Science is gratefully acknowledged.