Efficient Synthetic Routes to (±)‐Hippolachnin A, (±)‐Gracilioethers E and F and the Alleged Structure of (±)‐Gracilioether I

Two monocyclic members in the gracilioether family were synthesized in only three steps. The monocyclic products were further elaborated into advanced precursors to hippolachnin A and gracilioether E, respectively. Gracilioether F and the alleged structure for gracilioether I were also synthesized using a late‐stage C(sp3)–H thermo‐oxidation.