A Short Synthetic Pathway to a Fully-Functionalized Southern Hemisphere of the Antitumor Macrolide Bryostatin 1
作者:Karl J. Hale、Mark Frigerio、Soraya Manaviazar
DOI:10.1021/ol016800b
日期:2001.11.1
[reaction--see text] An 18-step asymmetric synthesis of the bryostatin 1 "southern hemisphere" fragment (1) has been developed. Key steps include an aldol reaction between 6 and 7 and a dehydration to establish the (E)-exocyclic alkene in 2 and a stereoselective Luche reduction and protection with TESOTf to access 1.