Synthesis of heliannuols A and K, allelochemicals from cultivar sunflowers and the marine metabolite helianane, unusual sesquiterpenes containing a benzoxocane ring system
Keywords: Allelochemical; Heliannuols A and K; Helianane; Benzoxocane ring system; Regioselective cleavage of benzo-fused oxabicyclo(5.1.0)octane;