Enantioselective Total Synthesis of (+)-Obtusenyne
作者:Michael T. Crimmins、Mark T. Powell
DOI:10.1021/ja029956v
日期:2003.6.1
(+)-obtusenyne has been completed. The key steps include a Sharpless kinetic resolution and an asymmetric glycolate alkylation to establish the stereogenic centers adjacent to the ether linkage and a ring-closing metathesis reaction to construct the nine-membered ether without the aid of a cyclic conformational constraint. The synthesis was completed in 20 linear steps from commercially available 1,5-hexadiene-3-ol