Ligand-Governed Regio- and Enantioselective [2 + 2 + 2] Cycloaddition of 1,7-Enynes: Assembly of the Benzo[<i>c</i>]chromen-1-ol Backbone and Access to Enantioenriched Cannabinol Bioisostere

King Hung Nigel Tang

Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan

Taichi Kishi

Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan

Natsuhiko Sugimura

Materials Characterization Central Laboratory, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan

Yuto Horio

Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan

Takanori Shibata

Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan