作者:Stephen G. Davies、Ai M. Fletcher、Clément Lebée、Paul M. Roberts、James E. Thomson、Jingda Yin
DOI:10.1016/j.tet.2012.11.080
日期:2013.1
The most efficient and concise asymmetric synthesis of (−)-(1R,7aS)-absouline to date, which was accomplished in eight steps and 20% overall yield from commercially available starting materials, is described. The doubly diastereoselective conjugate addition of lithium (S)-N-benzyl-N-(α-methylbenzyl)-amide to an enantiopure α,β-unsaturatedester derived from l-proline was employed as the key step. Subsequent