(−)-Exiguolide (1), isolatedfrom the marine sponge Geodia exigua, has been shown to inhibit the growth of the A549 human lung adenocarcinoma and NCI-H460 human lung large cell carcinoma cells in vitro. In this study, we synthesized structural analogues of 1 to explore its skeletal structure–activity relationships and found that the C18 methyl group and the configuration of the C16–C17 double bond
A highly enantioselective one-pot synthesis of homoallylic alcohols via tandem asymmetric allyl transfer/olefin cross metathesis
作者:Cheng-Hsia Angeline Lee、Teck-Peng Loh
DOI:10.1016/j.tetlet.2005.11.078
日期:2006.1
A highlyenantioselective one-pot synthesis of linear homoallylic alcohols with terminal ester functionality has been achieved. The reactions were controlled by ordered addition of reagents and catalysts, ensuring complete consumption of aldehyde. The synthetic utility of this strategy has been demonstrated in a short synthesis of a low boiling point intermediate for grahamimycin A.