An efficient synthesis of the guaiane sesquiterpene (?)-isoguaiene by domino metathesis

摘要

(?)-Isoguaiene was prepared from (S)-citronellal in only 9–10 steps with good overall yields. Either a trienyne or a dienediyne metathesis and highly diastereoselective organocatalytic Michael additions of aldehydes derived from (S)-citronellal served as the key transformations.