Abstract
A stereoselective total synthesis of (–)‐Nardoaristolone B, a nor‐aristolane sesquiterpenoid natural product with an unusual 3/5/6 tricyclic ring system is described. The highlights of the present work includes use of (+)‐(R)‐Pulegone as a chiral‐pool starting material, ring‐closing metathesis, allylic oxidation and stereoselective cyclopropanation. In addition, a new analogue of Nardoaristolone B (minor product from the final step) was isolated in pure form and fully characterized with the help of single‐crystal X‐ray analysis.
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