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
描述了一种高效,直接的立体选择性合成α,β-不饱和内酯(1)苦杏仁苷。合成从可商购的d-酒石酸开始,并在13个步骤内完成,总产率为7.92%。的顺式烯烃,从静止Gennari协议生成和羟基中的一个是从二羟基化方法。所有反应都非常干净,并且以非常高的收率获得了产物。