Enantioselective construction of 6-substituted-α,β-unsaturated-δ-lactone: total synthesis of anti-bacterial agent (−)-cleistenolide
作者:Ramesh S. Ghogare、Sachin B. Wadavrao、A. Venkat Narsaiah
DOI:10.1016/j.tetlet.2013.07.164
日期:2013.10
An efficient and straightforward stereoselective synthesis of α,β-unsaturated lactone (1) cleistenolide is described. The synthesis was started from commercially available d-tartaric acid and completed within 13 steps with an overall yield of 7.92%. The cis-olefin was generated from Still–Gennari protocol and one of the hydroxyl groups was from dihydroxylation methodology. All the reactions were very