Tohru Oishi, Yoko Nagumo, Masahiro Hirama, Tohru Oishi, Yoko Nagumo and Masahiro Hirama
A convergent synthesis of the trans-fused 6-n-6-6 (n = 7–10) tetracyclic ether system was achieved via stereoselective alkylation and ring-closing metathesis reaction.